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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths" xlink:label="CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths" xlink:title="CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths"/>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="StatementOfFinancialPositionAbstract" xlink:title="StatementOfFinancialPositionAbstract"/>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestPaidNet" xlink:label="InterestPaidNet" xlink:title="InterestPaidNet"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_InterestPaidNet_lbl" xml:lang="en-US" id="us-gaap_InterestPaidNet_lbl">Interest, net of amount capitalized</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="IncreaseDecreaseInInventories" xlink:title="IncreaseDecreaseInInventories"/>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInInventories" xlink:to="us-gaap_IncreaseDecreaseInInventories_lbl" xlink:title="label: IncreaseDecreaseInInventories to us-gaap_IncreaseDecreaseInInventories_lbl"/>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInInventories" xlink:to="us-gaap_IncreaseDecreaseInInventories_lbl1" xlink:title="label: IncreaseDecreaseInInventories to us-gaap_IncreaseDecreaseInInventories_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInReceivables" xlink:label="IncreaseDecreaseInReceivables" xlink:title="IncreaseDecreaseInReceivables"/>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="IncreaseDecreaseInOperatingCapitalAbstract" xlink:title="IncreaseDecreaseInOperatingCapitalAbstract"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xml:lang="en-US" id="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl">Changes in current assets and liabilities, net of acquisitions:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:title="label: IncreaseDecreaseInOperatingCapitalAbstract to us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl"/>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockSharesIssued" xlink:to="us-gaap_CommonStockSharesIssued_lbl" xlink:title="label: CommonStockSharesIssued to us-gaap_CommonStockSharesIssued_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommonStockValue" xlink:label="CommonStockValue" xlink:title="CommonStockValue"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_CommonStockValue_lbl" xml:lang="en-US" id="us-gaap_CommonStockValue_lbl">Shares issued -- $1.00 par value, 189,332,485 at June 30, 2011, 188,672,532 at June 30, 2010 and 188,901,379 at December 31, 2010</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockValue" xlink:to="us-gaap_CommonStockValue_lbl" xlink:title="label: CommonStockValue to us-gaap_CommonStockValue_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="ComprehensiveIncomeNetOfTax" xlink:title="ComprehensiveIncomeNetOfTax"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_ComprehensiveIncomeNetOfTax_lbl" xml:lang="en-US" id="us-gaap_ComprehensiveIncomeNetOfTax_lbl">Comprehensive income</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComprehensiveIncomeNetOfTax" xlink:to="us-gaap_ComprehensiveIncomeNetOfTax_lbl" xlink:title="label: ComprehensiveIncomeNetOfTax to us-gaap_ComprehensiveIncomeNetOfTax_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ComprehensiveIncomeNetOfTax_lbl1" xml:lang="en-US" id="us-gaap_ComprehensiveIncomeNetOfTax_lbl1">Comprehensive Income (Loss), Net of Tax, Attributable to Parent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComprehensiveIncomeNetOfTax" xlink:to="us-gaap_ComprehensiveIncomeNetOfTax_lbl1" xlink:title="label: ComprehensiveIncomeNetOfTax to us-gaap_ComprehensiveIncomeNetOfTax_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ComprehensiveIncomeNoteTextBlock" xlink:label="ComprehensiveIncomeNoteTextBlock" xlink:title="ComprehensiveIncomeNoteTextBlock"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeNoteTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_ComprehensiveIncomeNoteTextBlock_lbl" xml:lang="en-US" id="us-gaap_ComprehensiveIncomeNoteTextBlock_lbl">Comprehensive income</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComprehensiveIncomeNoteTextBlock" xlink:to="us-gaap_ComprehensiveIncomeNoteTextBlock_lbl" xlink:title="label: ComprehensiveIncomeNoteTextBlock to us-gaap_ComprehensiveIncomeNoteTextBlock_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeNoteTextBlock_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ComprehensiveIncomeNoteTextBlock_lbl1" xml:lang="en-US" id="us-gaap_ComprehensiveIncomeNoteTextBlock_lbl1">Comprehensive Income (Loss) Note [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComprehensiveIncomeNoteTextBlock" xlink:to="us-gaap_ComprehensiveIncomeNoteTextBlock_lbl1" xlink:title="label: ComprehensiveIncomeNoteTextBlock to us-gaap_ComprehensiveIncomeNoteTextBlock_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="LiabilitiesCurrent" xlink:title="LiabilitiesCurrent"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LiabilitiesCurrent_lbl" xml:lang="en-US" id="us-gaap_LiabilitiesCurrent_lbl">Total current liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesCurrent" xlink:to="us-gaap_LiabilitiesCurrent_lbl" xlink:title="label: LiabilitiesCurrent to us-gaap_LiabilitiesCurrent_lbl"/>
    <link:label xlink:type="resource" xlink:label="label_LiabilitiesCurrent" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_LiabilitiesCurrent" xml:lang="en-US" id="label_LiabilitiesCurrent">Total current liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesCurrent" xlink:to="label_LiabilitiesCurrent" xlink:title="label: LiabilitiesCurrent to label_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="LiabilitiesCurrentAbstract" xlink:title="LiabilitiesCurrentAbstract"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LiabilitiesCurrentAbstract_lbl" xml:lang="en-US" id="us-gaap_LiabilitiesCurrentAbstract_lbl">Current liabilities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesCurrentAbstract" xlink:to="us-gaap_LiabilitiesCurrentAbstract_lbl" xlink:title="label: LiabilitiesCurrentAbstract to us-gaap_LiabilitiesCurrentAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent" xlink:label="LongTermDebtAndCapitalLeaseObligationsCurrent" xlink:title="LongTermDebtAndCapitalLeaseObligationsCurrent"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_lbl" xml:lang="en-US" id="us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_lbl">Long-term debt due within one year</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtAndCapitalLeaseObligationsCurrent" xlink:to="us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_lbl" xlink:title="label: LongTermDebtAndCapitalLeaseObligationsCurrent to us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CustomerRelationshipsMember" xlink:label="CustomerRelationshipsMember" xlink:title="CustomerRelationshipsMember"/>
    <link:label xlink:type="resource" xlink:label="label_CustomerRelationshipsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CustomerRelationshipsMember" xml:lang="en-US" id="label_CustomerRelationshipsMember">Customer Relationships [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CustomerRelationshipsMember" xlink:to="label_CustomerRelationshipsMember" xlink:title="label: CustomerRelationshipsMember to label_CustomerRelationshipsMember"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:label="LongTermDebtAndCapitalLeaseObligations" xlink:title="LongTermDebtAndCapitalLeaseObligations"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_LongTermDebtAndCapitalLeaseObligations_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_LongTermDebtAndCapitalLeaseObligations_lbl" xml:lang="en-US" id="us-gaap_LongTermDebtAndCapitalLeaseObligations_lbl">Long-term debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtAndCapitalLeaseObligations" xlink:to="us-gaap_LongTermDebtAndCapitalLeaseObligations_lbl" xlink:title="label: LongTermDebtAndCapitalLeaseObligations to us-gaap_LongTermDebtAndCapitalLeaseObligations_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_LongTermDebtAndCapitalLeaseObligations_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LongTermDebtAndCapitalLeaseObligations_lbl1" xml:lang="en-US" id="us-gaap_LongTermDebtAndCapitalLeaseObligations_lbl1">Long-term Debt and Capital Lease Obligations</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtAndCapitalLeaseObligations" xlink:to="us-gaap_LongTermDebtAndCapitalLeaseObligations_lbl1" xlink:title="label: LongTermDebtAndCapitalLeaseObligations to us-gaap_LongTermDebtAndCapitalLeaseObligations_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DebtInstrumentFairValue" xlink:label="DebtInstrumentFairValue" xlink:title="DebtInstrumentFairValue"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DebtInstrumentFairValue_lbl" xml:lang="en-US" id="us-gaap_DebtInstrumentFairValue_lbl">Long-term debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentFairValue" xlink:to="us-gaap_DebtInstrumentFairValue_lbl" xlink:title="label: DebtInstrumentFairValue to us-gaap_DebtInstrumentFairValue_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="DeferredIncomeTaxExpenseBenefit" xlink:title="DeferredIncomeTaxExpenseBenefit"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DeferredIncomeTaxExpenseBenefit_lbl" xml:lang="en-US" id="us-gaap_DeferredIncomeTaxExpenseBenefit_lbl">Deferred income taxes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredIncomeTaxExpenseBenefit" xlink:to="us-gaap_DeferredIncomeTaxExpenseBenefit_lbl" xlink:title="label: DeferredIncomeTaxExpenseBenefit to us-gaap_DeferredIncomeTaxExpenseBenefit_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DeferredTaxAssetsNetCurrent" xlink:label="DeferredTaxAssetsNetCurrent" xlink:title="DeferredTaxAssetsNetCurrent"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsNetCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_DeferredTaxAssetsNetCurrent_lbl" xml:lang="en-US" id="us-gaap_DeferredTaxAssetsNetCurrent_lbl">Deferred income taxes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredTaxAssetsNetCurrent" xlink:to="us-gaap_DeferredTaxAssetsNetCurrent_lbl" xlink:title="label: DeferredTaxAssetsNetCurrent to us-gaap_DeferredTaxAssetsNetCurrent_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsNetCurrent_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DeferredTaxAssetsNetCurrent_lbl1" xml:lang="en-US" id="us-gaap_DeferredTaxAssetsNetCurrent_lbl1">Deferred Tax Assets, Net, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredTaxAssetsNetCurrent" xlink:to="us-gaap_DeferredTaxAssetsNetCurrent_lbl1" xlink:title="label: DeferredTaxAssetsNetCurrent to us-gaap_DeferredTaxAssetsNetCurrent_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DeferredTaxLiabilitiesNoncurrent" xlink:label="DeferredTaxLiabilitiesNoncurrent" xlink:title="DeferredTaxLiabilitiesNoncurrent"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_DeferredTaxLiabilitiesNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_DeferredTaxLiabilitiesNoncurrent_lbl" xml:lang="en-US" id="us-gaap_DeferredTaxLiabilitiesNoncurrent_lbl">Deferred income taxes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredTaxLiabilitiesNoncurrent" xlink:to="us-gaap_DeferredTaxLiabilitiesNoncurrent_lbl" xlink:title="label: DeferredTaxLiabilitiesNoncurrent to us-gaap_DeferredTaxLiabilitiesNoncurrent_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_DeferredTaxLiabilitiesNoncurrent_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DeferredTaxLiabilitiesNoncurrent_lbl1" xml:lang="en-US" id="us-gaap_DeferredTaxLiabilitiesNoncurrent_lbl1">Deferred Tax Liabilities, Noncurrent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredTaxLiabilitiesNoncurrent" xlink:to="us-gaap_DeferredTaxLiabilitiesNoncurrent_lbl1" xlink:title="label: DeferredTaxLiabilitiesNoncurrent to us-gaap_DeferredTaxLiabilitiesNoncurrent_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlansDomain" xlink:label="DefinedBenefitPlansDomain" xlink:title="DefinedBenefitPlansDomain"/>
    <link:label xlink:type="resource" xlink:label="label_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDomain" xml:lang="en-US" id="label_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDomain">Defined Benefit Plans and Other Postretirement Benefit Plans [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DefinedBenefitPlansDomain" xlink:to="label_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDomain" xlink:title="label: DefinedBenefitPlansDomain to label_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDomain"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset" xlink:label="DerivativeFairValueOfDerivativeAsset" xlink:title="DerivativeFairValueOfDerivativeAsset"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DerivativeFairValueOfDerivativeAsset_lbl" xml:lang="en-US" id="us-gaap_DerivativeFairValueOfDerivativeAsset_lbl">Derivative asset designated as hedging instrument, fair value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DerivativeFairValueOfDerivativeAsset" xlink:to="us-gaap_DerivativeFairValueOfDerivativeAsset_lbl" xlink:title="label: DerivativeFairValueOfDerivativeAsset to us-gaap_DerivativeFairValueOfDerivativeAsset_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability" xlink:label="DerivativeFairValueOfDerivativeLiability" xlink:title="DerivativeFairValueOfDerivativeLiability"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DerivativeFairValueOfDerivativeLiability_lbl" xml:lang="en-US" id="us-gaap_DerivativeFairValueOfDerivativeLiability_lbl">Derivative liability designated as hedging instrument, fair value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DerivativeFairValueOfDerivativeLiability" xlink:to="us-gaap_DerivativeFairValueOfDerivativeLiability_lbl" xlink:title="label: DerivativeFairValueOfDerivativeLiability to us-gaap_DerivativeFairValueOfDerivativeLiability_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DerivativeAssetsCurrent" xlink:label="DerivativeAssetsCurrent" xlink:title="DerivativeAssetsCurrent"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_DerivativeAssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_DerivativeAssetsCurrent_lbl" xml:lang="en-US" id="us-gaap_DerivativeAssetsCurrent_lbl">Commodity derivative instruments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DerivativeAssetsCurrent" xlink:to="us-gaap_DerivativeAssetsCurrent_lbl" xlink:title="label: DerivativeAssetsCurrent to us-gaap_DerivativeAssetsCurrent_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_DerivativeAssetsCurrent_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DerivativeAssetsCurrent_lbl1" xml:lang="en-US" id="us-gaap_DerivativeAssetsCurrent_lbl1">Derivative Assets, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DerivativeAssetsCurrent" xlink:to="us-gaap_DerivativeAssetsCurrent_lbl1" xlink:title="label: DerivativeAssetsCurrent to us-gaap_DerivativeAssetsCurrent_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DerivativeLiabilitiesCurrent" xlink:label="DerivativeLiabilitiesCurrent" xlink:title="DerivativeLiabilitiesCurrent"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_DerivativeLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_DerivativeLiabilitiesCurrent_lbl" xml:lang="en-US" id="us-gaap_DerivativeLiabilitiesCurrent_lbl">Commodity derivative instruments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DerivativeLiabilitiesCurrent" xlink:to="us-gaap_DerivativeLiabilitiesCurrent_lbl" xlink:title="label: DerivativeLiabilitiesCurrent to us-gaap_DerivativeLiabilitiesCurrent_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_DerivativeLiabilitiesCurrent_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DerivativeLiabilitiesCurrent_lbl1" xml:lang="en-US" id="us-gaap_DerivativeLiabilitiesCurrent_lbl1">Derivative Liabilities, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DerivativeLiabilitiesCurrent" xlink:to="us-gaap_DerivativeLiabilitiesCurrent_lbl1" xlink:title="label: DerivativeLiabilitiesCurrent to us-gaap_DerivativeLiabilitiesCurrent_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GuaranteeObligationsMaximumExposure" xlink:label="GuaranteeObligationsMaximumExposure" xlink:title="GuaranteeObligationsMaximumExposure"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_GuaranteeObligationsMaximumExposure_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_GuaranteeObligationsMaximumExposure_lbl" xml:lang="en-US" id="us-gaap_GuaranteeObligationsMaximumExposure_lbl">Guarantor Obligations, Maximum Exposure, Undiscounted</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GuaranteeObligationsMaximumExposure" xlink:to="us-gaap_GuaranteeObligationsMaximumExposure_lbl" xlink:title="label: GuaranteeObligationsMaximumExposure to us-gaap_GuaranteeObligationsMaximumExposure_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GuaranteeObligationsNatureDomain" xlink:label="GuaranteeObligationsNatureDomain" xlink:title="GuaranteeObligationsNatureDomain"/>
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    <link:label xlink:type="resource" xlink:label="label_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FiniteLivedIntangibleAssetsMajorClassNameDomain" xml:lang="en-US" id="label_FiniteLivedIntangibleAssetsMajorClassNameDomain">Finite-Lived Intangible Assets, Major Class Name [Domain]</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_FutureAmortizationExpenseYearTwo_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_FutureAmortizationExpenseYearTwo_lbl1" xml:lang="en-US" id="us-gaap_FutureAmortizationExpenseYearTwo_lbl1">Future Amortization Expense, Year Two</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfGoodwillTable" xlink:label="ScheduleOfGoodwillTable" xlink:title="ScheduleOfGoodwillTable"/>
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfGoodwillTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfGoodwillTable" xml:lang="en-US" id="label_ScheduleOfGoodwillTable">Schedule of Goodwill [Table]</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="IncomeStatementAbstract" xlink:title="IncomeStatementAbstract"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_IncomeStatementAbstract_lbl" xml:lang="en-US" id="us-gaap_IncomeStatementAbstract_lbl">CONSOLIDATED STATEMENTS OF INCOME (Unaudited) [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeStatementAbstract" xlink:to="us-gaap_IncomeStatementAbstract_lbl" xlink:title="label: IncomeStatementAbstract to us-gaap_IncomeStatementAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeLossFromContinuingOperations" xlink:label="IncomeLossFromContinuingOperations" xlink:title="IncomeLossFromContinuingOperations"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_IncomeLossFromContinuingOperations_lbl" xml:lang="en-US" id="us-gaap_IncomeLossFromContinuingOperations_lbl">Income from continuing operations</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeLossFromContinuingOperations" xlink:to="us-gaap_IncomeLossFromContinuingOperations_lbl" xlink:title="label: IncomeLossFromContinuingOperations to us-gaap_IncomeLossFromContinuingOperations_lbl"/>
    <link:label xlink:type="resource" xlink:label="label_IncomeLossFromContinuingOperations" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_IncomeLossFromContinuingOperations" xml:lang="en-US" id="label_IncomeLossFromContinuingOperations">Income from continuing operations</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeLossFromContinuingOperations" xlink:to="label_IncomeLossFromContinuingOperations" xlink:title="label: IncomeLossFromContinuingOperations to label_IncomeLossFromContinuingOperations"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare" xlink:label="IncomeLossFromContinuingOperationsPerDilutedShare" xlink:title="IncomeLossFromContinuingOperationsPerDilutedShare"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_lbl" xml:lang="en-US" id="us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_lbl">Earnings before discontinued operations</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeLossFromContinuingOperationsPerDilutedShare" xlink:to="us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_lbl" xlink:title="label: IncomeLossFromContinuingOperationsPerDilutedShare to us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsPerBasicShare" xlink:label="IncomeLossFromContinuingOperationsPerBasicShare" xlink:title="IncomeLossFromContinuingOperationsPerBasicShare"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_lbl" xml:lang="en-US" id="us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_lbl">Earnings before discontinued operations</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeLossFromContinuingOperationsPerBasicShare" xlink:to="us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_lbl" xlink:title="label: IncomeLossFromContinuingOperationsPerBasicShare to us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_lbl1" xml:lang="en-US" id="us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_lbl1">Income (Loss) from Continuing Operations, Per Basic Share</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeLossFromContinuingOperationsPerBasicShare" xlink:to="us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_lbl1" xlink:title="label: IncomeLossFromContinuingOperationsPerBasicShare to us-gaap_IncomeLossFromContinuingOperationsPerBasicShare_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare" xlink:label="IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare" xlink:title="IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare_lbl" xml:lang="en-US" id="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare_lbl">Discontinued operations, net of tax</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare" xlink:to="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare_lbl" xlink:title="label: IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare to us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare" xlink:label="IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare" xlink:title="IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_lbl" xml:lang="en-US" id="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_lbl">Discontinued operations, net of tax</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare" xlink:to="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_lbl" xlink:title="label: IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare to us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_lbl1" xml:lang="en-US" id="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_lbl1">Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare" xlink:to="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_lbl1" xlink:title="label: IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare to us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeTaxDisclosureTextBlock" xlink:label="IncomeTaxDisclosureTextBlock" xlink:title="IncomeTaxDisclosureTextBlock"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_IncomeTaxDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_IncomeTaxDisclosureTextBlock_lbl" xml:lang="en-US" id="us-gaap_IncomeTaxDisclosureTextBlock_lbl">Income Taxes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxDisclosureTextBlock" xlink:to="us-gaap_IncomeTaxDisclosureTextBlock_lbl" xlink:title="label: IncomeTaxDisclosureTextBlock to us-gaap_IncomeTaxDisclosureTextBlock_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_IncomeTaxDisclosureTextBlock_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_IncomeTaxDisclosureTextBlock_lbl1" xml:lang="en-US" id="us-gaap_IncomeTaxDisclosureTextBlock_lbl1">Income Tax Disclosure [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxDisclosureTextBlock" xlink:to="us-gaap_IncomeTaxDisclosureTextBlock_lbl1" xlink:title="label: IncomeTaxDisclosureTextBlock to us-gaap_IncomeTaxDisclosureTextBlock_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeTaxesPaidNet" xlink:label="IncomeTaxesPaidNet" xlink:title="IncomeTaxesPaidNet"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_IncomeTaxesPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_IncomeTaxesPaidNet_lbl" xml:lang="en-US" id="us-gaap_IncomeTaxesPaidNet_lbl">Income taxes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxesPaidNet" xlink:to="us-gaap_IncomeTaxesPaidNet_lbl" xlink:title="label: IncomeTaxesPaidNet to us-gaap_IncomeTaxesPaidNet_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="IntangibleAssetsNetExcludingGoodwill" xlink:title="IntangibleAssetsNetExcludingGoodwill"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_IntangibleAssetsNetExcludingGoodwill_lbl" xml:lang="en-US" id="us-gaap_IntangibleAssetsNetExcludingGoodwill_lbl">Other intangible assets, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IntangibleAssetsNetExcludingGoodwill" xlink:to="us-gaap_IntangibleAssetsNetExcludingGoodwill_lbl" xlink:title="label: IntangibleAssetsNetExcludingGoodwill to us-gaap_IntangibleAssetsNetExcludingGoodwill_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_IntangibleAssetsNetExcludingGoodwill_lbl1" xml:lang="en-US" id="us-gaap_IntangibleAssetsNetExcludingGoodwill_lbl1">Other amortizable intangible assets, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IntangibleAssetsNetExcludingGoodwill" xlink:to="us-gaap_IntangibleAssetsNetExcludingGoodwill_lbl1" xlink:title="label: IntangibleAssetsNetExcludingGoodwill to us-gaap_IntangibleAssetsNetExcludingGoodwill_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="FiniteLivedIntangibleAssetsGross" xlink:title="FiniteLivedIntangibleAssetsGross"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_FiniteLivedIntangibleAssetsGross_lbl" xml:lang="en-US" id="us-gaap_FiniteLivedIntangibleAssetsGross_lbl">Other amortizable intangible assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsGross" xlink:to="us-gaap_FiniteLivedIntangibleAssetsGross_lbl" xlink:title="label: FiniteLivedIntangibleAssetsGross to us-gaap_FiniteLivedIntangibleAssetsGross_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNetAbstract" xlink:label="FiniteLivedIntangibleAssetsNetAbstract" xlink:title="FiniteLivedIntangibleAssetsNetAbstract"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNetAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_FiniteLivedIntangibleAssetsNetAbstract_lbl" xml:lang="en-US" id="us-gaap_FiniteLivedIntangibleAssetsNetAbstract_lbl">Other amortizable intangible assets [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FiniteLivedIntangibleAssetsNetAbstract" xlink:to="us-gaap_FiniteLivedIntangibleAssetsNetAbstract_lbl" xlink:title="label: FiniteLivedIntangibleAssetsNetAbstract to us-gaap_FiniteLivedIntangibleAssetsNetAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Goodwill" xlink:label="Goodwill" xlink:title="Goodwill"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_Goodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_Goodwill_lbl" xml:lang="en-US" id="us-gaap_Goodwill_lbl">Goodwill</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Goodwill" xlink:to="us-gaap_Goodwill_lbl" xlink:title="label: Goodwill to us-gaap_Goodwill_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_Goodwill_lbl1" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:title="us-gaap_Goodwill_lbl1" xml:lang="en-US" id="us-gaap_Goodwill_lbl1">Balance as of beginning of period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Goodwill" xlink:to="us-gaap_Goodwill_lbl1" xlink:title="label: Goodwill to us-gaap_Goodwill_lbl1"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_Goodwill_lbl2" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:title="us-gaap_Goodwill_lbl2" xml:lang="en-US" id="us-gaap_Goodwill_lbl2">Balance as of end of period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Goodwill" xlink:to="us-gaap_Goodwill_lbl2" xlink:title="label: Goodwill to us-gaap_Goodwill_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InterestExpense" xlink:label="InterestExpense" xlink:title="InterestExpense"/>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InterestExpense" xlink:to="us-gaap_InterestExpense_lbl" xlink:title="label: InterestExpense to us-gaap_InterestExpense_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EnergyRelatedInventoryNaturalGasInStorage" xlink:label="EnergyRelatedInventoryNaturalGasInStorage" xlink:title="EnergyRelatedInventoryNaturalGasInStorage"/>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EnergyRelatedInventoryNaturalGasInStorage" xlink:to="us-gaap_EnergyRelatedInventoryNaturalGasInStorage_lbl" xlink:title="label: EnergyRelatedInventoryNaturalGasInStorage to us-gaap_EnergyRelatedInventoryNaturalGasInStorage_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_InventoryNet" xlink:label="InventoryNet" xlink:title="InventoryNet"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_InventoryNet_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_InventoryNet_lbl" xml:lang="en-US" id="us-gaap_InventoryNet_lbl">Inventories</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryNet" xlink:to="us-gaap_InventoryNet_lbl" xlink:title="label: InventoryNet to us-gaap_InventoryNet_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_InventoryNet_lbl1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_InventoryNet_lbl1" xml:lang="en-US" id="us-gaap_InventoryNet_lbl1">Total</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_InventoryNet_lbl2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_InventoryNet_lbl2" xml:lang="en-US" id="us-gaap_InventoryNet_lbl2">Inventory, Net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryNet" xlink:to="us-gaap_InventoryNet_lbl2" xlink:title="label: InventoryNet to us-gaap_InventoryNet_lbl2"/>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="LiabilitiesAndStockholdersEquity" xlink:title="LiabilitiesAndStockholdersEquity"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xml:lang="en-US" id="us-gaap_LiabilitiesAndStockholdersEquity_lbl">Total liabilities and stockholders' equity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:title="label: LiabilitiesAndStockholdersEquity to us-gaap_LiabilitiesAndStockholdersEquity_lbl"/>
    <link:label xlink:type="resource" xlink:label="label_LiabilitiesAndStockholdersEquity" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_LiabilitiesAndStockholdersEquity" xml:lang="en-US" id="label_LiabilitiesAndStockholdersEquity">Total liabilities and stockholders' equity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesAndStockholdersEquity" xlink:to="label_LiabilitiesAndStockholdersEquity" xlink:title="label: LiabilitiesAndStockholdersEquity to label_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="LiabilitiesAndStockholdersEquityAbstract" xlink:title="LiabilitiesAndStockholdersEquityAbstract"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xml:lang="en-US" id="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl">LIABILITIES AND STOCKHOLDERS' EQUITY</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:title="label: LiabilitiesAndStockholdersEquityAbstract to us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis" xlink:label="LossContingenciesByNatureOfContingencyAxis" xlink:title="LossContingenciesByNatureOfContingencyAxis"/>
    <link:label xlink:type="resource" xlink:label="label_LossContingenciesByNatureOfContingencyAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LossContingenciesByNatureOfContingencyAxis" xml:lang="en-US" id="label_LossContingenciesByNatureOfContingencyAxis">Loss Contingencies by Nature of Contingency [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LossContingenciesByNatureOfContingencyAxis" xlink:to="label_LossContingenciesByNatureOfContingencyAxis" xlink:title="label: LossContingenciesByNatureOfContingencyAxis to label_LossContingenciesByNatureOfContingencyAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="LossContingenciesLineItems" xlink:title="LossContingenciesLineItems"/>
    <link:label xlink:type="resource" xlink:label="lab_LossContingenciesLineItems_label_en-US" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="lab_LossContingenciesLineItems_label_en-US" xml:lang="en-US" id="lab_LossContingenciesLineItems_label_en-US">Loss Contingencies [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LossContingenciesLineItems" xlink:to="lab_LossContingenciesLineItems_label_en-US" xlink:title="label: LossContingenciesLineItems to lab_LossContingenciesLineItems_label_en-US"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="LossContingenciesTable" xlink:title="LossContingenciesTable"/>
    <link:label xlink:type="resource" xlink:label="label_LossContingenciesTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LossContingenciesTable" xml:lang="en-US" id="label_LossContingenciesTable">Loss Contingencies [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LossContingenciesTable" xlink:to="label_LossContingenciesTable" xlink:title="label: LossContingenciesTable to label_LossContingenciesTable"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LossContingencyNatureDomain" xlink:label="LossContingencyNatureDomain" xlink:title="LossContingencyNatureDomain"/>
    <link:label xlink:type="resource" xlink:label="label_LossContingencyNatureDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LossContingencyNatureDomain" xml:lang="en-US" id="label_LossContingencyNatureDomain">Loss Contingency, Nature [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LossContingencyNatureDomain" xlink:to="label_LossContingencyNatureDomain" xlink:title="label: LossContingencyNatureDomain to label_LossContingencyNatureDomain"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LossContingencyRangeOfPossibleLossMaximum" xlink:label="LossContingencyRangeOfPossibleLossMaximum" xlink:title="LossContingencyRangeOfPossibleLossMaximum"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_LossContingencyRangeOfPossibleLossMaximum_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LossContingencyRangeOfPossibleLossMaximum_lbl" xml:lang="en-US" id="us-gaap_LossContingencyRangeOfPossibleLossMaximum_lbl">Estimated damages in pending litigation regarding pavement work under a subcontract, high estimate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LossContingencyRangeOfPossibleLossMaximum" xlink:to="us-gaap_LossContingencyRangeOfPossibleLossMaximum_lbl" xlink:title="label: LossContingencyRangeOfPossibleLossMaximum to us-gaap_LossContingencyRangeOfPossibleLossMaximum_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LossContingencyRangeOfPossibleLossMinimum" xlink:label="LossContingencyRangeOfPossibleLossMinimum" xlink:title="LossContingencyRangeOfPossibleLossMinimum"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_LossContingencyRangeOfPossibleLossMinimum_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LossContingencyRangeOfPossibleLossMinimum_lbl" xml:lang="en-US" id="us-gaap_LossContingencyRangeOfPossibleLossMinimum_lbl">Estimated damages in pending litigation regarding pavement work under a subcontract, low estimate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LossContingencyRangeOfPossibleLossMinimum" xlink:to="us-gaap_LossContingencyRangeOfPossibleLossMinimum_lbl" xlink:title="label: LossContingencyRangeOfPossibleLossMinimum to us-gaap_LossContingencyRangeOfPossibleLossMinimum_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_MaximumLengthOfTimeHedgedInCashFlowHedge" xlink:label="MaximumLengthOfTimeHedgedInCashFlowHedge" xlink:title="MaximumLengthOfTimeHedgedInCashFlowHedge"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_MaximumLengthOfTimeHedgedInCashFlowHedge_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_MaximumLengthOfTimeHedgedInCashFlowHedge_lbl" xml:lang="en-US" id="us-gaap_MaximumLengthOfTimeHedgedInCashFlowHedge_lbl">Maximum Length of Time Hedged in swap and collar cash flow hedge agreements</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MaximumLengthOfTimeHedgedInCashFlowHedge" xlink:to="us-gaap_MaximumLengthOfTimeHedgedInCashFlowHedge_lbl" xlink:title="label: MaximumLengthOfTimeHedgedInCashFlowHedge to us-gaap_MaximumLengthOfTimeHedgedInCashFlowHedge_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_lab_MaximumLengthOfTimeHedgedInCashFlowHedge2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xml:lang="en-US" id="lab_us-gaap_MaximumLengthOfTimeHedgedInCashFlowHedge_label_en-US2">Maximum Length of Time Hedged in swap, collar and/or put cash flow hedge agreements in months</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MaximumLengthOfTimeHedgedInCashFlowHedge" xlink:to="us-gaap_lab_MaximumLengthOfTimeHedgedInCashFlowHedge2" order="1.0"/>
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    <link:label xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_lbl" xml:lang="en-US" id="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_lbl">Net cash provided by continuing operations</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_lbl" xlink:title="label: NetCashProvidedByUsedInOperatingActivitiesContinuingOperations to us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_lbl"/>
    <link:label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xml:lang="en-US" id="label_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations">Net cash provided by continuing operations</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="label_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:title="label: NetCashProvidedByUsedInOperatingActivitiesContinuingOperations to label_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="NetCashProvidedByUsedInFinancingActivities" xlink:title="NetCashProvidedByUsedInFinancingActivities"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xml:lang="en-US" id="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl">Net cash provided by (used in) financing activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:title="label: NetCashProvidedByUsedInFinancingActivities to us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl"/>
    <link:label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_NetCashProvidedByUsedInFinancingActivities" xml:lang="en-US" id="label_NetCashProvidedByUsedInFinancingActivities">Net cash provided by (used in) financing activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInFinancingActivities" xlink:to="label_NetCashProvidedByUsedInFinancingActivities" xlink:title="label: NetCashProvidedByUsedInFinancingActivities to label_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:title="NetCashProvidedByUsedInFinancingActivitiesAbstract"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xml:lang="en-US" id="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl">Financing activities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:title="label: NetCashProvidedByUsedInFinancingActivitiesAbstract to us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="NetCashProvidedByUsedInInvestingActivities" xlink:title="NetCashProvidedByUsedInInvestingActivities"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xml:lang="en-US" id="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl">Net cash used in investing activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:title="label: NetCashProvidedByUsedInInvestingActivities to us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl"/>
    <link:label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_NetCashProvidedByUsedInInvestingActivities" xml:lang="en-US" id="label_NetCashProvidedByUsedInInvestingActivities">Net cash used in investing activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInInvestingActivities" xlink:to="label_NetCashProvidedByUsedInInvestingActivities" xlink:title="label: NetCashProvidedByUsedInInvestingActivities to label_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:title="NetCashProvidedByUsedInInvestingActivitiesAbstract"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xml:lang="en-US" id="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl">Investing activities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:title="label: NetCashProvidedByUsedInInvestingActivitiesAbstract to us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="NetCashProvidedByUsedInOperatingActivities" xlink:title="NetCashProvidedByUsedInOperatingActivities"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xml:lang="en-US" id="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl">Net cash provided by operating activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:title="label: NetCashProvidedByUsedInOperatingActivities to us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl"/>
    <link:label xlink:type="resource" xlink:label="label_NetCashProvidedByUsedInOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_NetCashProvidedByUsedInOperatingActivities" xml:lang="en-US" id="label_NetCashProvidedByUsedInOperatingActivities">Net cash provided by operating activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInOperatingActivities" xlink:to="label_NetCashProvidedByUsedInOperatingActivities" xlink:title="label: NetCashProvidedByUsedInOperatingActivities to label_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:title="NetCashProvidedByUsedInOperatingActivitiesAbstract"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" id="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl">Operating activities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:title="label: NetCashProvidedByUsedInOperatingActivitiesAbstract to us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="NetIncomeLoss" xlink:title="NetIncomeLoss"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US" id="us-gaap_NetIncomeLoss_lbl">Net income</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLoss" xlink:to="us-gaap_NetIncomeLoss_lbl" xlink:title="label: NetIncomeLoss to us-gaap_NetIncomeLoss_lbl"/>
    <link:label xlink:type="resource" xlink:label="label_NetIncomeLoss" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_NetIncomeLoss" xml:lang="en-US" id="label_NetIncomeLoss">Net income</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLoss" xlink:to="label_NetIncomeLoss" xlink:title="label: NetIncomeLoss to label_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:title="CashAndCashEquivalentsPeriodIncreaseDecrease"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_lbl" xml:lang="en-US" id="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_lbl">Decrease in cash and cash equivalents</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_lbl" xlink:title="label: CashAndCashEquivalentsPeriodIncreaseDecrease to us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_lbl"/>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="OtherNonoperatingIncomeExpense" xlink:title="OtherNonoperatingIncomeExpense"/>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherNonoperatingIncomeExpense" xlink:to="us-gaap_OtherNonoperatingIncomeExpense_lbl" xlink:title="label: OtherNonoperatingIncomeExpense to us-gaap_OtherNonoperatingIncomeExpense_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:title="OtherPostretirementBenefitPlansDefinedBenefitMember"/>
    <link:label xlink:type="resource" xlink:label="label_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OtherPostretirementBenefitPlansDefinedBenefitMember" xml:lang="en-US" id="label_OtherPostretirementBenefitPlansDefinedBenefitMember">Other Postretirement Benefit Plans, Defined Benefit [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:to="label_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:title="label: OtherPostretirementBenefitPlansDefinedBenefitMember to label_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsOfDividends" xlink:label="PaymentsOfDividends" xlink:title="PaymentsOfDividends"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_PaymentsOfDividends_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PaymentsOfDividends_lbl" xml:lang="en-US" id="us-gaap_PaymentsOfDividends_lbl">Dividends paid</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PendingOrThreatenedLitigationMember" xlink:label="PendingOrThreatenedLitigationMember" xlink:title="PendingOrThreatenedLitigationMember"/>
    <link:label xlink:type="resource" xlink:label="label_PendingOrThreatenedLitigationMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PendingOrThreatenedLitigationMember" xml:lang="en-US" id="label_PendingOrThreatenedLitigationMember">Pending or Threatened Litigation [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PendingOrThreatenedLitigationMember" xlink:to="label_PendingOrThreatenedLitigationMember" xlink:title="label: PendingOrThreatenedLitigationMember to label_PendingOrThreatenedLitigationMember"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock" xlink:label="PensionAndOtherPostretirementBenefitsDisclosureTextBlock" xlink:title="PensionAndOtherPostretirementBenefitsDisclosureTextBlock"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_lbl" xml:lang="en-US" id="us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_lbl">Employee benefit plans</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PensionAndOtherPostretirementBenefitsDisclosureTextBlock" xlink:to="us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_lbl" xlink:title="label: PensionAndOtherPostretirementBenefitsDisclosureTextBlock to us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_lbl1" xml:lang="en-US" id="us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_lbl1">Pension and Other Postretirement Benefits Disclosure [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PensionAndOtherPostretirementBenefitsDisclosureTextBlock" xlink:to="us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_lbl1" xlink:title="label: PensionAndOtherPostretirementBenefitsDisclosureTextBlock to us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_lbl1"/>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PerformanceGuaranteeMember" xlink:label="PerformanceGuaranteeMember" xlink:title="PerformanceGuaranteeMember"/>
    <link:label xlink:type="resource" xlink:label="label_PerformanceGuaranteeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PerformanceGuaranteeMember" xml:lang="en-US" id="label_PerformanceGuaranteeMember">Performance Guarantee [Member]</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_lbl" xml:lang="en-US" id="us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_lbl">Components of net periodic benefit cost:</link:label>
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    <link:label xlink:type="resource" xlink:label="label_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_DefinedBenefitPlanNetPeriodicBenefitCost" xml:lang="en-US" id="label_DefinedBenefitPlanNetPeriodicBenefitCost">Net periodic benefit cost</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:label="DefinedBenefitPlanServiceCost" xlink:title="DefinedBenefitPlanServiceCost"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_DefinedBenefitPlanServiceCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DefinedBenefitPlanServiceCost_lbl" xml:lang="en-US" id="us-gaap_DefinedBenefitPlanServiceCost_lbl">Service cost</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DefinedBenefitPlanServiceCost" xlink:to="us-gaap_DefinedBenefitPlanServiceCost_lbl" xlink:title="label: DefinedBenefitPlanServiceCost to us-gaap_DefinedBenefitPlanServiceCost_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis" xlink:label="DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis" xlink:title="DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis"/>
    <link:label xlink:type="resource" xlink:label="label_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresAxis" xml:lang="en-US" id="label_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresAxis">Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis" xlink:to="label_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresAxis" xlink:title="label: DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis to label_DefinedBenefitPlansAndOtherPostretirementBenefitPlansDisclosuresAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="DefinedBenefitPlanDisclosureLineItems" xlink:title="DefinedBenefitPlanDisclosureLineItems"/>
    <link:label xlink:type="resource" xlink:label="lab_DefinedBenefitPlanDisclosureLineItems_label_en-US" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="lab_DefinedBenefitPlanDisclosureLineItems_label_en-US" xml:lang="en-US" id="lab_DefinedBenefitPlanDisclosureLineItems_label_en-US">Defined Benefit Plan Disclosure [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DefinedBenefitPlanDisclosureLineItems" xlink:to="lab_DefinedBenefitPlanDisclosureLineItems_label_en-US" xlink:title="label: DefinedBenefitPlanDisclosureLineItems to lab_DefinedBenefitPlanDisclosureLineItems_label_en-US"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:title="ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfDefinedBenefitPlansDisclosuresTable" xml:lang="en-US" id="label_ScheduleOfDefinedBenefitPlansDisclosuresTable">Schedule of Defined Benefit Plans Disclosures [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="label_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:title="label: ScheduleOfDefinedBenefitPlansDisclosuresTable to label_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="ProceedsFromIssuanceOfCommonStock" xlink:title="ProceedsFromIssuanceOfCommonStock"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xml:lang="en-US" id="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl">Proceeds from issuance of common stock</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromIssuanceOfCommonStock" xlink:to="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xlink:title="label: ProceedsFromIssuanceOfCommonStock to us-gaap_ProceedsFromIssuanceOfCommonStock_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:label="ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:title="ProceedsFromSaleOfPropertyPlantAndEquipment"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl" xml:lang="en-US" id="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl">Net proceeds from sale or disposition of property</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:to="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl" xlink:title="label: ProceedsFromSaleOfPropertyPlantAndEquipment to us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="PropertyPlantAndEquipmentGross" xlink:title="PropertyPlantAndEquipmentGross"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PropertyPlantAndEquipmentGross_lbl" xml:lang="en-US" id="us-gaap_PropertyPlantAndEquipmentGross_lbl">Property, plant and equipment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentGross" xlink:to="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:title="label: PropertyPlantAndEquipmentGross to us-gaap_PropertyPlantAndEquipmentGross_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="PropertyPlantAndEquipmentNet" xlink:title="PropertyPlantAndEquipmentNet"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PropertyPlantAndEquipmentNet_lbl" xml:lang="en-US" id="us-gaap_PropertyPlantAndEquipmentNet_lbl">Net property, plant and equipment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentNet" xlink:to="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:title="label: PropertyPlantAndEquipmentNet to us-gaap_PropertyPlantAndEquipmentNet_lbl"/>
    <link:label xlink:type="resource" xlink:label="label_PropertyPlantAndEquipmentNet" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_PropertyPlantAndEquipmentNet" xml:lang="en-US" id="label_PropertyPlantAndEquipmentNet">Net property, plant and equipment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentNet" xlink:to="label_PropertyPlantAndEquipmentNet" xlink:title="label: PropertyPlantAndEquipmentNet to label_PropertyPlantAndEquipmentNet"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PublicUtilitiesDisclosureTextBlock" xlink:label="PublicUtilitiesDisclosureTextBlock" xlink:title="PublicUtilitiesDisclosureTextBlock"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_PublicUtilitiesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_PublicUtilitiesDisclosureTextBlock_lbl" xml:lang="en-US" id="us-gaap_PublicUtilitiesDisclosureTextBlock_lbl">Public Utilities Disclosure</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PublicUtilitiesDisclosureTextBlock" xlink:to="us-gaap_PublicUtilitiesDisclosureTextBlock_lbl" xlink:title="label: PublicUtilitiesDisclosureTextBlock to us-gaap_PublicUtilitiesDisclosureTextBlock_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_PublicUtilitiesDisclosureTextBlock_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PublicUtilitiesDisclosureTextBlock_lbl1" xml:lang="en-US" id="us-gaap_PublicUtilitiesDisclosureTextBlock_lbl1">Public Utilities Disclosure [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PublicUtilitiesDisclosureTextBlock" xlink:to="us-gaap_PublicUtilitiesDisclosureTextBlock_lbl1" xlink:title="label: PublicUtilitiesDisclosureTextBlock to us-gaap_PublicUtilitiesDisclosureTextBlock_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentsForProceedsFromInvestments" xlink:label="PaymentsForProceedsFromInvestments" xlink:title="PaymentsForProceedsFromInvestments"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_PaymentsForProceedsFromInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_PaymentsForProceedsFromInvestments_lbl" xml:lang="en-US" id="us-gaap_PaymentsForProceedsFromInvestments_lbl">Investments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsForProceedsFromInvestments" xlink:to="us-gaap_PaymentsForProceedsFromInvestments_lbl" xlink:title="label: PaymentsForProceedsFromInvestments to us-gaap_PaymentsForProceedsFromInvestments_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_PaymentsForProceedsFromInvestments_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PaymentsForProceedsFromInvestments_lbl1" xml:lang="en-US" id="us-gaap_PaymentsForProceedsFromInvestments_lbl1">Payments for (Proceeds from) Investments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsForProceedsFromInvestments" xlink:to="us-gaap_PaymentsForProceedsFromInvestments_lbl1" xlink:title="label: PaymentsForProceedsFromInvestments to us-gaap_PaymentsForProceedsFromInvestments_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ReceivablesNetCurrent" xlink:label="ReceivablesNetCurrent" xlink:title="ReceivablesNetCurrent"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_ReceivablesNetCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ReceivablesNetCurrent_lbl" xml:lang="en-US" id="us-gaap_ReceivablesNetCurrent_lbl">Receivables, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ReceivablesNetCurrent" xlink:to="us-gaap_ReceivablesNetCurrent_lbl" xlink:title="label: ReceivablesNetCurrent to us-gaap_ReceivablesNetCurrent_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RegulatedOperationMember" xlink:label="RegulatedOperationMember" xlink:title="RegulatedOperationMember"/>
    <link:label xlink:type="resource" xlink:label="label_RegulatedOperationMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RegulatedOperationMember" xml:lang="en-US" id="label_RegulatedOperationMember">Regulated Operation [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RegulatedOperationMember" xlink:to="label_RegulatedOperationMember" xlink:title="label: RegulatedOperationMember to label_RegulatedOperationMember"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RegulatedAndUnregulatedOperationDomain" xlink:label="RegulatedAndUnregulatedOperationDomain" xlink:title="RegulatedAndUnregulatedOperationDomain"/>
    <link:label xlink:type="resource" xlink:label="label_RegulatedAndUnregulatedOperationDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RegulatedAndUnregulatedOperationDomain" xml:lang="en-US" id="label_RegulatedAndUnregulatedOperationDomain">Regulated and Unregulated Operation [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RegulatedAndUnregulatedOperationDomain" xlink:to="label_RegulatedAndUnregulatedOperationDomain" xlink:title="label: RegulatedAndUnregulatedOperationDomain to label_RegulatedAndUnregulatedOperationDomain"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:label="RepaymentsOfLongTermDebt" xlink:title="RepaymentsOfLongTermDebt"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_RepaymentsOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_RepaymentsOfLongTermDebt_lbl" xml:lang="en-US" id="us-gaap_RepaymentsOfLongTermDebt_lbl">Repayment of long-term debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RepaymentsOfLongTermDebt" xlink:to="us-gaap_RepaymentsOfLongTermDebt_lbl" xlink:title="label: RepaymentsOfLongTermDebt to us-gaap_RepaymentsOfLongTermDebt_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="RetainedEarningsAccumulatedDeficit" xlink:title="RetainedEarningsAccumulatedDeficit"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xml:lang="en-US" id="us-gaap_RetainedEarningsAccumulatedDeficit_lbl">Retained earnings</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RetainedEarningsAccumulatedDeficit" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:title="label: RetainedEarningsAccumulatedDeficit to us-gaap_RetainedEarningsAccumulatedDeficit_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTextBlock" xlink:label="ScheduleOfDefinedBenefitPlansDisclosuresTextBlock" xlink:title="ScheduleOfDefinedBenefitPlansDisclosuresTextBlock"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTextBlock_lbl" xml:lang="en-US" id="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTextBlock_lbl">Employee benefit plans Table</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfDefinedBenefitPlansDisclosuresTextBlock" xlink:to="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTextBlock_lbl" xlink:title="label: ScheduleOfDefinedBenefitPlansDisclosuresTextBlock to us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTextBlock_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock" xlink:label="ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock" xlink:title="ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock_lbl" xml:lang="en-US" id="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock_lbl">Other Amortizable Intangible Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock" xlink:to="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock_lbl" xlink:title="label: ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock to us-gaap_ScheduleOfFiniteLivedIntangibleAssetsByMajorClassTextBlock_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfGoodwillTextBlock" xlink:label="ScheduleOfGoodwillTextBlock" xlink:title="ScheduleOfGoodwillTextBlock"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_ScheduleOfGoodwillTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ScheduleOfGoodwillTextBlock_lbl" xml:lang="en-US" id="us-gaap_ScheduleOfGoodwillTextBlock_lbl">Changes in the Carrying Amount of Goodwill</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfGoodwillTextBlock" xlink:to="us-gaap_ScheduleOfGoodwillTextBlock_lbl" xlink:title="label: ScheduleOfGoodwillTextBlock to us-gaap_ScheduleOfGoodwillTextBlock_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SegmentReportingDisclosureTextBlock" xlink:label="SegmentReportingDisclosureTextBlock" xlink:title="SegmentReportingDisclosureTextBlock"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_SegmentReportingDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_SegmentReportingDisclosureTextBlock_lbl" xml:lang="en-US" id="us-gaap_SegmentReportingDisclosureTextBlock_lbl">Business segment data</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SegmentReportingDisclosureTextBlock" xlink:to="us-gaap_SegmentReportingDisclosureTextBlock_lbl" xlink:title="label: SegmentReportingDisclosureTextBlock to us-gaap_SegmentReportingDisclosureTextBlock_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_SegmentReportingDisclosureTextBlock_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_SegmentReportingDisclosureTextBlock_lbl1" xml:lang="en-US" id="us-gaap_SegmentReportingDisclosureTextBlock_lbl1">Segment Reporting Disclosure [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SegmentReportingDisclosureTextBlock" xlink:to="us-gaap_SegmentReportingDisclosureTextBlock_lbl1" xlink:title="label: SegmentReportingDisclosureTextBlock to us-gaap_SegmentReportingDisclosureTextBlock_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:label="ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:title="ScheduleOfSegmentReportingInformationBySegmentTextBlock"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" xml:lang="en-US" id="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl">Information on the Company's businesses</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:to="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" xlink:title="label: ScheduleOfSegmentReportingInformationBySegmentTextBlock to us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="SegmentReportingInformationLineItems" xlink:title="SegmentReportingInformationLineItems"/>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SegmentReportingInformationLineItems" xlink:to="lab_SegmentReportingInformationLineItems_label_en-US" xlink:title="label: SegmentReportingInformationLineItems to lab_SegmentReportingInformationLineItems_label_en-US"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="ScheduleOfSegmentReportingInformationBySegmentTable" xlink:title="ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfSegmentReportingInformationBySegmentTable" xml:lang="en-US" id="label_ScheduleOfSegmentReportingInformationBySegmentTable">Schedule of Segment Reporting Information, by Segment [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfSegmentReportingInformationBySegmentTable" xlink:to="label_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:title="label: ScheduleOfSegmentReportingInformationBySegmentTable to label_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ShortTermBorrowings" xlink:label="ShortTermBorrowings" xlink:title="ShortTermBorrowings"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_ShortTermBorrowings_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ShortTermBorrowings_lbl" xml:lang="en-US" id="us-gaap_ShortTermBorrowings_lbl">Short-term borrowings</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShortTermBorrowings" xlink:to="us-gaap_ShortTermBorrowings_lbl" xlink:title="label: ShortTermBorrowings to us-gaap_ShortTermBorrowings_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SiteContingencyLossExposureNotAccruedBestEstimate" xlink:label="SiteContingencyLossExposureNotAccruedBestEstimate" xlink:title="SiteContingencyLossExposureNotAccruedBestEstimate"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_SiteContingencyLossExposureNotAccruedBestEstimate_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_SiteContingencyLossExposureNotAccruedBestEstimate_lbl" xml:lang="en-US" id="us-gaap_SiteContingencyLossExposureNotAccruedBestEstimate_lbl">Site Contingency, Loss Exposure Not Accrued, Best Estimate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SiteContingencyLossExposureNotAccruedBestEstimate" xlink:to="us-gaap_SiteContingencyLossExposureNotAccruedBestEstimate_lbl" xlink:title="label: SiteContingencyLossExposureNotAccruedBestEstimate to us-gaap_SiteContingencyLossExposureNotAccruedBestEstimate_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SiteContingencyNatureOfContingencyDomain" xlink:label="SiteContingencyNatureOfContingencyDomain" xlink:title="SiteContingencyNatureOfContingencyDomain"/>
    <link:label xlink:type="resource" xlink:label="label_SiteContingencyNatureOfContingencyDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SiteContingencyNatureOfContingencyDomain" xml:lang="en-US" id="label_SiteContingencyNatureOfContingencyDomain">Site Contingency, Nature of Contingency [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SiteContingencyNatureOfContingencyDomain" xlink:to="label_SiteContingencyNatureOfContingencyDomain" xlink:title="label: SiteContingencyNatureOfContingencyDomain to label_SiteContingencyNatureOfContingencyDomain"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SiteContingencyByNatureAxis" xlink:label="SiteContingencyByNatureAxis" xlink:title="SiteContingencyByNatureAxis"/>
    <link:label xlink:type="resource" xlink:label="label_SiteContingencyByNatureAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SiteContingencyByNatureAxis" xml:lang="en-US" id="label_SiteContingencyByNatureAxis">Site Contingency by Nature [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SiteContingencyByNatureAxis" xlink:to="label_SiteContingencyByNatureAxis" xlink:title="label: SiteContingencyByNatureAxis to label_SiteContingencyByNatureAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SiteContingencyLineItems" xlink:label="SiteContingencyLineItems" xlink:title="SiteContingencyLineItems"/>
    <link:label xlink:type="resource" xlink:label="lab_SiteContingencyLineItems_label_en-US" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="lab_SiteContingencyLineItems_label_en-US" xml:lang="en-US" id="lab_SiteContingencyLineItems_label_en-US">Site Contingency [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SiteContingencyLineItems" xlink:to="lab_SiteContingencyLineItems_label_en-US" xlink:title="label: SiteContingencyLineItems to lab_SiteContingencyLineItems_label_en-US"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SiteContingencyTable" xlink:label="SiteContingencyTable" xlink:title="SiteContingencyTable"/>
    <link:label xlink:type="resource" xlink:label="label_SiteContingencyTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SiteContingencyTable" xml:lang="en-US" id="label_SiteContingencyTable">Site Contingency [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SiteContingencyTable" xlink:to="label_SiteContingencyTable" xlink:title="label: SiteContingencyTable to label_SiteContingencyTable"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="StatementOfCashFlowsAbstract" xlink:title="StatementOfCashFlowsAbstract"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_StatementOfCashFlowsAbstract_lbl" xml:lang="en-US" id="us-gaap_StatementOfCashFlowsAbstract_lbl">CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementOfCashFlowsAbstract" xlink:to="us-gaap_StatementOfCashFlowsAbstract_lbl" xlink:title="label: StatementOfCashFlowsAbstract to us-gaap_StatementOfCashFlowsAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="StockholdersEquityAbstract" xlink:title="StockholdersEquityAbstract"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_StockholdersEquityAbstract_lbl" xml:lang="en-US" id="us-gaap_StockholdersEquityAbstract_lbl">Stockholders' equity :</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquityAbstract" xlink:to="us-gaap_StockholdersEquityAbstract_lbl" xlink:title="label: StockholdersEquityAbstract to us-gaap_StockholdersEquityAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock" xlink:label="GoodwillAndIntangibleAssetsDisclosureTextBlock" xlink:title="GoodwillAndIntangibleAssetsDisclosureTextBlock"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_lbl" xml:lang="en-US" id="us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_lbl">Goodwill and other intangible assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillAndIntangibleAssetsDisclosureTextBlock" xlink:to="us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_lbl" xlink:title="label: GoodwillAndIntangibleAssetsDisclosureTextBlock to us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_lbl1" xml:lang="en-US" id="us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_lbl1">Goodwill and Intangible Assets Disclosure [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillAndIntangibleAssetsDisclosureTextBlock" xlink:to="us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_lbl1" xlink:title="label: GoodwillAndIntangibleAssetsDisclosureTextBlock to us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="SupplementalCashFlowInformationAbstract" xlink:title="SupplementalCashFlowInformationAbstract"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xml:lang="en-US" id="us-gaap_SupplementalCashFlowInformationAbstract_lbl">Cash expenditures for interest and income taxes [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SupplementalCashFlowInformationAbstract" xlink:to="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:title="label: SupplementalCashFlowInformationAbstract to us-gaap_SupplementalCashFlowInformationAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities" xlink:label="ExcessTaxBenefitFromShareBasedCompensationFinancingActivities" xlink:title="ExcessTaxBenefitFromShareBasedCompensationFinancingActivities"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_lbl" xml:lang="en-US" id="us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_lbl">Excess tax benefit on stock-based compensation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ExcessTaxBenefitFromShareBasedCompensationFinancingActivities" xlink:to="us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_lbl" xlink:title="label: ExcessTaxBenefitFromShareBasedCompensationFinancingActivities to us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="AssetsCurrent" xlink:title="AssetsCurrent"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_AssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_AssetsCurrent_lbl" xml:lang="en-US" id="us-gaap_AssetsCurrent_lbl">Total current assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsCurrent" xlink:to="us-gaap_AssetsCurrent_lbl" xlink:title="label: AssetsCurrent to us-gaap_AssetsCurrent_lbl"/>
    <link:label xlink:type="resource" xlink:label="label_AssetsCurrent" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_AssetsCurrent" xml:lang="en-US" id="label_AssetsCurrent">Total current assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsCurrent" xlink:to="label_AssetsCurrent" xlink:title="label: AssetsCurrent to label_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="AssetsCurrentAbstract" xlink:title="AssetsCurrentAbstract"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_AssetsCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_AssetsCurrentAbstract_lbl" xml:lang="en-US" id="us-gaap_AssetsCurrentAbstract_lbl">Current assets:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsCurrentAbstract" xlink:to="us-gaap_AssetsCurrentAbstract_lbl" xlink:title="label: AssetsCurrentAbstract to us-gaap_AssetsCurrentAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets" xlink:label="EquityMethodInvestmentSummarizedFinancialInformationAssets" xlink:title="EquityMethodInvestmentSummarizedFinancialInformationAssets"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets_lbl" xml:lang="en-US" id="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets_lbl">Total assets of equity method investments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityMethodInvestmentSummarizedFinancialInformationAssets" xlink:to="us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets_lbl" xlink:title="label: EquityMethodInvestmentSummarizedFinancialInformationAssets to us-gaap_EquityMethodInvestmentSummarizedFinancialInformationAssets_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities" xlink:label="UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities" xlink:title="UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities"/>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities" xlink:to="us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities_lbl" xlink:title="label: UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities to us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_UnregulatedOperationMember" xlink:label="UnregulatedOperationMember" xlink:title="UnregulatedOperationMember"/>
    <link:label xlink:type="resource" xlink:label="label_UnregulatedOperationMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_UnregulatedOperationMember" xml:lang="en-US" id="label_UnregulatedOperationMember">Unregulated Operation [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UnregulatedOperationMember" xlink:to="label_UnregulatedOperationMember" xlink:title="label: UnregulatedOperationMember to label_UnregulatedOperationMember"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="WeightedAverageNumberOfDilutedSharesOutstanding" xlink:title="WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xml:lang="en-US" id="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl">Weighted average common shares outstanding -- diluted</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:title="label: WeightedAverageNumberOfDilutedSharesOutstanding to us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="WeightedAverageNumberOfSharesOutstandingBasic" xlink:title="WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xml:lang="en-US" id="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl">Weighted average common shares outstanding -- basic</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberOfSharesOutstandingBasic" xlink:to="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:title="label: WeightedAverageNumberOfSharesOutstandingBasic to us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAbstract" xlink:label="AvailableForSaleSecuritiesAbstract" xlink:title="AvailableForSaleSecuritiesAbstract"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_AvailableForSaleSecuritiesAbstract_lbl" xml:lang="en-US" id="us-gaap_AvailableForSaleSecuritiesAbstract_lbl">Available-for-sale securities [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AvailableForSaleSecuritiesAbstract" xlink:to="us-gaap_AvailableForSaleSecuritiesAbstract_lbl" xlink:title="label: AvailableForSaleSecuritiesAbstract to us-gaap_AvailableForSaleSecuritiesAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_Assets" xlink:label="Assets" xlink:title="Assets"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_Assets_lbl" xml:lang="en-US" id="us-gaap_Assets_lbl">Total assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Assets" xlink:to="us-gaap_Assets_lbl" xlink:title="label: Assets to us-gaap_Assets_lbl"/>
    <link:label xlink:type="resource" xlink:label="label_Assets" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_Assets" xml:lang="en-US" id="label_Assets">Total assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Assets" xlink:to="label_Assets" xlink:title="label: Assets to label_Assets"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="OtherLiabilitiesNoncurrent" xlink:title="OtherLiabilitiesNoncurrent"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_OtherLiabilitiesNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_OtherLiabilitiesNoncurrent_lbl" xml:lang="en-US" id="us-gaap_OtherLiabilitiesNoncurrent_lbl">Other liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherLiabilitiesNoncurrent" xlink:to="us-gaap_OtherLiabilitiesNoncurrent_lbl" xlink:title="label: OtherLiabilitiesNoncurrent to us-gaap_OtherLiabilitiesNoncurrent_lbl"/>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations" xlink:label="CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations" xlink:title="CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations_lbl" xml:lang="en-US" id="us-gaap_CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations_lbl">Net cash provided by discontinued operations</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations" xlink:to="us-gaap_CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations_lbl" xlink:title="label: CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations to us-gaap_CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TreasuryStockValue" xlink:label="TreasuryStockValue" xlink:title="TreasuryStockValue"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_TreasuryStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_TreasuryStockValue_lbl" xml:lang="en-US" id="us-gaap_TreasuryStockValue_lbl">Treasury stock at cost - 538,921 shares</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TreasuryStockValue" xlink:to="us-gaap_TreasuryStockValue_lbl" xlink:title="label: TreasuryStockValue to us-gaap_TreasuryStockValue_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CashFlowSupplementalDisclosuresTextBlock" xlink:label="CashFlowSupplementalDisclosuresTextBlock" xlink:title="CashFlowSupplementalDisclosuresTextBlock"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_CashFlowSupplementalDisclosuresTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_CashFlowSupplementalDisclosuresTextBlock_lbl" xml:lang="en-US" id="us-gaap_CashFlowSupplementalDisclosuresTextBlock_lbl">Cash flow information</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashFlowSupplementalDisclosuresTextBlock" xlink:to="us-gaap_CashFlowSupplementalDisclosuresTextBlock_lbl" xlink:title="label: CashFlowSupplementalDisclosuresTextBlock to us-gaap_CashFlowSupplementalDisclosuresTextBlock_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_CashFlowSupplementalDisclosuresTextBlock_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_CashFlowSupplementalDisclosuresTextBlock_lbl1" xml:lang="en-US" id="us-gaap_CashFlowSupplementalDisclosuresTextBlock_lbl1">Cash Flow, Supplemental Disclosures [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashFlowSupplementalDisclosuresTextBlock" xlink:to="us-gaap_CashFlowSupplementalDisclosuresTextBlock_lbl1" xlink:title="label: CashFlowSupplementalDisclosuresTextBlock to us-gaap_CashFlowSupplementalDisclosuresTextBlock_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="OtherAssetsNoncurrent" xlink:title="OtherAssetsNoncurrent"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_OtherAssetsNoncurrent_lbl" xml:lang="en-US" id="us-gaap_OtherAssetsNoncurrent_lbl">Other</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherAssetsNoncurrent" xlink:to="us-gaap_OtherAssetsNoncurrent_lbl" xlink:title="label: OtherAssetsNoncurrent to us-gaap_OtherAssetsNoncurrent_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_OtherAssetsNoncurrent_lbl1" xml:lang="en-US" id="us-gaap_OtherAssetsNoncurrent_lbl1">Other Assets, Noncurrent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherAssetsNoncurrent" xlink:to="us-gaap_OtherAssetsNoncurrent_lbl1" xlink:title="label: OtherAssetsNoncurrent to us-gaap_OtherAssetsNoncurrent_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GoodwillRollForward" xlink:label="GoodwillRollForward" xlink:title="GoodwillRollForward"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_GoodwillRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_GoodwillRollForward_lbl" xml:lang="en-US" id="us-gaap_GoodwillRollForward_lbl">Goodwill [Roll Forward]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillRollForward" xlink:to="us-gaap_GoodwillRollForward_lbl" xlink:title="label: GoodwillRollForward to us-gaap_GoodwillRollForward_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="OperatingExpensesAbstract" xlink:title="OperatingExpensesAbstract"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_OperatingExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_OperatingExpensesAbstract_lbl" xml:lang="en-US" id="us-gaap_OperatingExpensesAbstract_lbl">Operating expenses:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingExpensesAbstract" xlink:to="us-gaap_OperatingExpensesAbstract_lbl" xlink:title="label: OperatingExpensesAbstract to us-gaap_OperatingExpensesAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="OperatingExpenses" xlink:title="OperatingExpenses"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_OperatingExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_OperatingExpenses_lbl" xml:lang="en-US" id="us-gaap_OperatingExpenses_lbl">Total operating expenses</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingExpenses" xlink:to="us-gaap_OperatingExpenses_lbl" xlink:title="label: OperatingExpenses to us-gaap_OperatingExpenses_lbl"/>
    <link:label xlink:type="resource" xlink:label="label_OperatingExpenses" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_OperatingExpenses" xml:lang="en-US" id="label_OperatingExpenses">Total operating expenses</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingExpenses" xlink:to="label_OperatingExpenses" xlink:title="label: OperatingExpenses to label_OperatingExpenses"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EarningsPerShareBasicAbstract" xlink:label="EarningsPerShareBasicAbstract" xlink:title="EarningsPerShareBasicAbstract"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasicAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_EarningsPerShareBasicAbstract_lbl" xml:lang="en-US" id="us-gaap_EarningsPerShareBasicAbstract_lbl">Earnings per common share - basic:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsPerShareBasicAbstract" xlink:to="us-gaap_EarningsPerShareBasicAbstract_lbl" xlink:title="label: EarningsPerShareBasicAbstract to us-gaap_EarningsPerShareBasicAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EarningsPerShareDilutedAbstract" xlink:label="EarningsPerShareDilutedAbstract" xlink:title="EarningsPerShareDilutedAbstract"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDilutedAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_EarningsPerShareDilutedAbstract_lbl" xml:lang="en-US" id="us-gaap_EarningsPerShareDilutedAbstract_lbl">Earnings per common share - diluted:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsPerShareDilutedAbstract" xlink:to="us-gaap_EarningsPerShareDilutedAbstract_lbl" xlink:title="label: EarningsPerShareDilutedAbstract to us-gaap_EarningsPerShareDilutedAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:title="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xml:lang="en-US" id="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl">Shares excluded from the calculation of diluted earnings per share (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:to="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xlink:title="label: AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount to us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="EarningsPerShareAbstract" xlink:title="EarningsPerShareAbstract"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_EarningsPerShareAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_EarningsPerShareAbstract_lbl" xml:lang="en-US" id="us-gaap_EarningsPerShareAbstract_lbl">Earnings per common share [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsPerShareAbstract" xlink:to="us-gaap_EarningsPerShareAbstract_lbl" xlink:title="label: EarningsPerShareAbstract to us-gaap_EarningsPerShareAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GoodwillAcquiredDuringPeriod" xlink:label="GoodwillAcquiredDuringPeriod" xlink:title="GoodwillAcquiredDuringPeriod"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_GoodwillAcquiredDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_GoodwillAcquiredDuringPeriod_lbl" xml:lang="en-US" id="us-gaap_GoodwillAcquiredDuringPeriod_lbl">Goodwill aquired during the year</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillAcquiredDuringPeriod" xlink:to="us-gaap_GoodwillAcquiredDuringPeriod_lbl" xlink:title="label: GoodwillAcquiredDuringPeriod to us-gaap_GoodwillAcquiredDuringPeriod_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:label="ScheduleOfEquityMethodInvestmentsTable" xlink:title="ScheduleOfEquityMethodInvestmentsTable"/>
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfEquityMethodInvestmentsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfEquityMethodInvestmentsTable" xml:lang="en-US" id="label_ScheduleOfEquityMethodInvestmentsTable">Schedule of Equity Method Investments [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfEquityMethodInvestmentsTable" xlink:to="label_ScheduleOfEquityMethodInvestmentsTable" xlink:title="label: ScheduleOfEquityMethodInvestmentsTable to label_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:label="ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:title="ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:label xlink:type="resource" xlink:label="label_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xml:lang="en-US" id="label_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis">Schedule of Equity Method Investment, Equity Method Investee, Name [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:to="label_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:title="label: ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis to label_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="ScheduleOfEquityMethodInvestmentsLineItems" xlink:title="ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:label xlink:type="resource" xlink:label="lab_ScheduleOfEquityMethodInvestmentsLineItems_label_en-US" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="lab_ScheduleOfEquityMethodInvestmentsLineItems_label_en-US" xml:lang="en-US" id="lab_ScheduleOfEquityMethodInvestmentsLineItems_label_en-US">Schedule of Equity Method Investments [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="lab_ScheduleOfEquityMethodInvestmentsLineItems_label_en-US" xlink:title="label: ScheduleOfEquityMethodInvestmentsLineItems to lab_ScheduleOfEquityMethodInvestmentsLineItems_label_en-US"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="CommonStockParOrStatedValuePerShare" xlink:title="CommonStockParOrStatedValuePerShare"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xml:lang="en-US" id="us-gaap_CommonStockParOrStatedValuePerShare_lbl">Common Stock par value (in dollars per share)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockParOrStatedValuePerShare" xlink:to="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xlink:title="label: CommonStockParOrStatedValuePerShare to us-gaap_CommonStockParOrStatedValuePerShare_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TreasuryStockShares" xlink:label="TreasuryStockShares" xlink:title="TreasuryStockShares"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_TreasuryStockShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_TreasuryStockShares_lbl" xml:lang="en-US" id="us-gaap_TreasuryStockShares_lbl">Treasury stock (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TreasuryStockShares" xlink:to="us-gaap_TreasuryStockShares_lbl" xlink:title="label: TreasuryStockShares to us-gaap_TreasuryStockShares_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTax" xlink:label="OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTax" xlink:title="OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTax"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTax_lbl" xml:lang="en-US" id="us-gaap_OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTax_lbl">Foreign currency translation adjustment, tax</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTax" xlink:to="us-gaap_OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTax_lbl" xlink:title="label: OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTax to us-gaap_OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTax_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="StockholdersEquity" xlink:title="StockholdersEquity"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_StockholdersEquity_lbl" xml:lang="en-US" id="us-gaap_StockholdersEquity_lbl">Total stockholders' equity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_lbl" xlink:title="label: StockholdersEquity to us-gaap_StockholdersEquity_lbl"/>
    <link:label xlink:type="resource" xlink:label="label_StockholdersEquity" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_StockholdersEquity" xml:lang="en-US" id="label_StockholdersEquity">Total stockholders' equity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquity" xlink:to="label_StockholdersEquity" xlink:title="label: StockholdersEquity to label_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="IncomeTaxExpenseBenefit" xlink:title="IncomeTaxExpenseBenefit"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_IncomeTaxExpenseBenefit_lbl" xml:lang="en-US" id="us-gaap_IncomeTaxExpenseBenefit_lbl">Income taxes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:title="label: IncomeTaxExpenseBenefit to us-gaap_IncomeTaxExpenseBenefit_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_IncomeTaxExpenseBenefit_lbl1" xml:lang="en-US" id="us-gaap_IncomeTaxExpenseBenefit_lbl1">Income Tax Expense (Benefit)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxExpenseBenefit_lbl1" xlink:title="label: IncomeTaxExpenseBenefit to us-gaap_IncomeTaxExpenseBenefit_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PublicUtilityRegulatedOrUnregulatedStatusAxis" xlink:label="PublicUtilityRegulatedOrUnregulatedStatusAxis" xlink:title="PublicUtilityRegulatedOrUnregulatedStatusAxis"/>
    <link:label xlink:type="resource" xlink:label="label_PublicUtilityRegulatedOrUnregulatedStatusAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PublicUtilityRegulatedOrUnregulatedStatusAxis" xml:lang="en-US" id="label_PublicUtilityRegulatedOrUnregulatedStatusAxis">Public Utility Regulated or Unregulated Status [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PublicUtilityRegulatedOrUnregulatedStatusAxis" xlink:to="label_PublicUtilityRegulatedOrUnregulatedStatusAxis" xlink:title="label: PublicUtilityRegulatedOrUnregulatedStatusAxis to label_PublicUtilityRegulatedOrUnregulatedStatusAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="PreferredStockValue" xlink:title="PreferredStockValue"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_PreferredStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PreferredStockValue_lbl" xml:lang="en-US" id="us-gaap_PreferredStockValue_lbl">Preferred stocks</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PreferredStockValue" xlink:to="us-gaap_PreferredStockValue_lbl" xlink:title="label: PreferredStockValue to us-gaap_PreferredStockValue_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure" xlink:label="MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure" xlink:title="MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure_lbl" xml:lang="en-US" id="us-gaap_MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure_lbl">Mortgage-backed securities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure" xlink:to="us-gaap_MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure_lbl" xlink:title="label: MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure to us-gaap_MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_PaymentGuaranteeMember" xlink:label="PaymentGuaranteeMember" xlink:title="PaymentGuaranteeMember"/>
    <link:label xlink:type="resource" xlink:label="label_PaymentGuaranteeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_PaymentGuaranteeMember" xml:lang="en-US" id="label_PaymentGuaranteeMember">Payment Guarantee [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentGuaranteeMember" xlink:to="label_PaymentGuaranteeMember" xlink:title="label: PaymentGuaranteeMember to label_PaymentGuaranteeMember"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherInventoryNetOfReserves" xlink:label="OtherInventoryNetOfReserves" xlink:title="OtherInventoryNetOfReserves"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_OtherInventoryNetOfReserves_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_OtherInventoryNetOfReserves_lbl" xml:lang="en-US" id="us-gaap_OtherInventoryNetOfReserves_lbl">Other</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherInventoryNetOfReserves" xlink:to="us-gaap_OtherInventoryNetOfReserves_lbl" xlink:title="label: OtherInventoryNetOfReserves to us-gaap_OtherInventoryNetOfReserves_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="StatementBusinessSegmentsAxis" xlink:title="StatementBusinessSegmentsAxis"/>
    <link:label xlink:type="resource" xlink:label="label_StatementBusinessSegmentsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_StatementBusinessSegmentsAxis" xml:lang="en-US" id="label_StatementBusinessSegmentsAxis">Statement, Business Segments [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementBusinessSegmentsAxis" xlink:to="label_StatementBusinessSegmentsAxis" xlink:title="label: StatementBusinessSegmentsAxis to label_StatementBusinessSegmentsAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DividendsPreferredStock" xlink:label="DividendsPreferredStock" xlink:title="DividendsPreferredStock"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_DividendsPreferredStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DividendsPreferredStock_lbl" xml:lang="en-US" id="us-gaap_DividendsPreferredStock_lbl">Dividends on preferred stocks</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DividendsPreferredStock" xlink:to="us-gaap_DividendsPreferredStock_lbl" xlink:title="label: DividendsPreferredStock to us-gaap_DividendsPreferredStock_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EarningsPerShareTextBlock" xlink:label="EarningsPerShareTextBlock" xlink:title="EarningsPerShareTextBlock"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_EarningsPerShareTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_EarningsPerShareTextBlock_lbl" xml:lang="en-US" id="us-gaap_EarningsPerShareTextBlock_lbl">Earnings per common share</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsPerShareTextBlock" xlink:to="us-gaap_EarningsPerShareTextBlock_lbl" xlink:title="label: EarningsPerShareTextBlock to us-gaap_EarningsPerShareTextBlock_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_EarningsPerShareTextBlock_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_EarningsPerShareTextBlock_lbl1" xml:lang="en-US" id="us-gaap_EarningsPerShareTextBlock_lbl1">Earnings Per Share [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsPerShareTextBlock" xlink:to="us-gaap_EarningsPerShareTextBlock_lbl1" xlink:title="label: EarningsPerShareTextBlock to us-gaap_EarningsPerShareTextBlock_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TaxesExcludingIncomeAndExciseTaxes" xlink:label="TaxesExcludingIncomeAndExciseTaxes" xlink:title="TaxesExcludingIncomeAndExciseTaxes"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_TaxesExcludingIncomeAndExciseTaxes_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_TaxesExcludingIncomeAndExciseTaxes_lbl" xml:lang="en-US" id="us-gaap_TaxesExcludingIncomeAndExciseTaxes_lbl">Taxes, other than income</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TaxesExcludingIncomeAndExciseTaxes" xlink:to="us-gaap_TaxesExcludingIncomeAndExciseTaxes_lbl" xlink:title="label: TaxesExcludingIncomeAndExciseTaxes to us-gaap_TaxesExcludingIncomeAndExciseTaxes_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity" xlink:label="IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity" xlink:title="IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_lbl" xml:lang="en-US" id="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_lbl">Income (loss) from discontinued operations, net of tax (Note 9)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity" xlink:to="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_lbl" xlink:title="label: IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity to us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_lbl1" xml:lang="en-US" id="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_lbl1">Income from discontinued operations, net of tax</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity" xlink:to="us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_lbl1" xlink:title="label: IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity to us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity_lbl1"/>
    <link:label xlink:type="resource" xlink:label="label_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity" xml:lang="en-US" id="label_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity">Income (loss) on discontinued operations</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity" xlink:to="label_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity" xlink:title="label: IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity to label_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="DepreciationDepletionAndAmortization" xlink:title="DepreciationDepletionAndAmortization"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_DepreciationDepletionAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DepreciationDepletionAndAmortization_lbl" xml:lang="en-US" id="us-gaap_DepreciationDepletionAndAmortization_lbl">Depreciation, depletion and amortization</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DepreciationDepletionAndAmortization" xlink:to="us-gaap_DepreciationDepletionAndAmortization_lbl" xlink:title="label: DepreciationDepletionAndAmortization to us-gaap_DepreciationDepletionAndAmortization_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="CommitmentsAndContingencies" xlink:title="CommitmentsAndContingencies"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_CommitmentsAndContingencies_lbl" xml:lang="en-US" id="us-gaap_CommitmentsAndContingencies_lbl">Commitments and contingencies</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommitmentsAndContingencies" xlink:to="us-gaap_CommitmentsAndContingencies_lbl" xlink:title="label: CommitmentsAndContingencies to us-gaap_CommitmentsAndContingencies_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:title="AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" id="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl">Adjustments to reconcile net income to net cash provided by operating activities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:title="label: AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract to us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NatureOfOperations" xlink:label="NatureOfOperations" xlink:title="NatureOfOperations"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_NatureOfOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_NatureOfOperations_lbl" xml:lang="en-US" id="us-gaap_NatureOfOperations_lbl">Seasonality of operations</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NatureOfOperations" xlink:to="us-gaap_NatureOfOperations_lbl" xlink:title="label: NatureOfOperations to us-gaap_NatureOfOperations_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_NatureOfOperations_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_NatureOfOperations_lbl1" xml:lang="en-US" id="us-gaap_NatureOfOperations_lbl1">Nature of Operations [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NatureOfOperations" xlink:to="us-gaap_NatureOfOperations_lbl1" xlink:title="label: NatureOfOperations to us-gaap_NatureOfOperations_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccountsPayableCurrentAndNoncurrent" xlink:label="AccountsPayableCurrentAndNoncurrent" xlink:title="AccountsPayableCurrentAndNoncurrent"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_AccountsPayableCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_AccountsPayableCurrentAndNoncurrent_lbl" xml:lang="en-US" id="us-gaap_AccountsPayableCurrentAndNoncurrent_lbl">Accounts payable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccountsPayableCurrentAndNoncurrent" xlink:to="us-gaap_AccountsPayableCurrentAndNoncurrent_lbl" xlink:title="label: AccountsPayableCurrentAndNoncurrent to us-gaap_AccountsPayableCurrentAndNoncurrent_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_AccountsPayableCurrentAndNoncurrent_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_AccountsPayableCurrentAndNoncurrent_lbl1" xml:lang="en-US" id="us-gaap_AccountsPayableCurrentAndNoncurrent_lbl1">Accounts Payable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccountsPayableCurrentAndNoncurrent" xlink:to="us-gaap_AccountsPayableCurrentAndNoncurrent_lbl1" xlink:title="label: AccountsPayableCurrentAndNoncurrent to us-gaap_AccountsPayableCurrentAndNoncurrent_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AccruedSalariesCurrentAndNoncurrent" xlink:label="AccruedSalariesCurrentAndNoncurrent" xlink:title="AccruedSalariesCurrentAndNoncurrent"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_AccruedSalariesCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_AccruedSalariesCurrentAndNoncurrent_lbl" xml:lang="en-US" id="us-gaap_AccruedSalariesCurrentAndNoncurrent_lbl">Accrued compensation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccruedSalariesCurrentAndNoncurrent" xlink:to="us-gaap_AccruedSalariesCurrentAndNoncurrent_lbl" xlink:title="label: AccruedSalariesCurrentAndNoncurrent to us-gaap_AccruedSalariesCurrentAndNoncurrent_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DividendsPayableCurrentAndNoncurrent" xlink:label="DividendsPayableCurrentAndNoncurrent" xlink:title="DividendsPayableCurrentAndNoncurrent"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_DividendsPayableCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DividendsPayableCurrentAndNoncurrent_lbl" xml:lang="en-US" id="us-gaap_DividendsPayableCurrentAndNoncurrent_lbl">Dividends payable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DividendsPayableCurrentAndNoncurrent" xlink:to="us-gaap_DividendsPayableCurrentAndNoncurrent_lbl" xlink:title="label: DividendsPayableCurrentAndNoncurrent to us-gaap_DividendsPayableCurrentAndNoncurrent_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OtherAccruedLiabilitiesCurrentAndNoncurrent" xlink:label="OtherAccruedLiabilitiesCurrentAndNoncurrent" xlink:title="OtherAccruedLiabilitiesCurrentAndNoncurrent"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_OtherAccruedLiabilitiesCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_OtherAccruedLiabilitiesCurrentAndNoncurrent_lbl" xml:lang="en-US" id="us-gaap_OtherAccruedLiabilitiesCurrentAndNoncurrent_lbl">Other accrued liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherAccruedLiabilitiesCurrentAndNoncurrent" xlink:to="us-gaap_OtherAccruedLiabilitiesCurrentAndNoncurrent_lbl" xlink:title="label: OtherAccruedLiabilitiesCurrentAndNoncurrent to us-gaap_OtherAccruedLiabilitiesCurrentAndNoncurrent_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_TaxesPayableCurrentAndNoncurrent" xlink:label="TaxesPayableCurrentAndNoncurrent" xlink:title="TaxesPayableCurrentAndNoncurrent"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_TaxesPayableCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_TaxesPayableCurrentAndNoncurrent_lbl" xml:lang="en-US" id="us-gaap_TaxesPayableCurrentAndNoncurrent_lbl">Taxes payable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TaxesPayableCurrentAndNoncurrent" xlink:to="us-gaap_TaxesPayableCurrentAndNoncurrent_lbl" xlink:title="label: TaxesPayableCurrentAndNoncurrent to us-gaap_TaxesPayableCurrentAndNoncurrent_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AssetsFairValueDisclosure" xlink:label="AssetsFairValueDisclosure" xlink:title="AssetsFairValueDisclosure"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_AssetsFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_AssetsFairValueDisclosure_lbl" xml:lang="en-US" id="us-gaap_AssetsFairValueDisclosure_lbl">Total assets measured at fair value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsFairValueDisclosure" xlink:to="us-gaap_AssetsFairValueDisclosure_lbl" xlink:title="label: AssetsFairValueDisclosure to us-gaap_AssetsFairValueDisclosure_lbl"/>
    <link:label xlink:type="resource" xlink:label="label_AssetsFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_AssetsFairValueDisclosure" xml:lang="en-US" id="label_AssetsFairValueDisclosure">Total assets measured at fair value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsFairValueDisclosure" xlink:to="label_AssetsFairValueDisclosure" xlink:title="label: AssetsFairValueDisclosure to label_AssetsFairValueDisclosure"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesFairValueDisclosure" xlink:label="LiabilitiesFairValueDisclosure" xlink:title="LiabilitiesFairValueDisclosure"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_LiabilitiesFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LiabilitiesFairValueDisclosure_lbl" xml:lang="en-US" id="us-gaap_LiabilitiesFairValueDisclosure_lbl">Total liabilities measured at fair value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesFairValueDisclosure" xlink:to="us-gaap_LiabilitiesFairValueDisclosure_lbl" xlink:title="label: LiabilitiesFairValueDisclosure to us-gaap_LiabilitiesFairValueDisclosure_lbl"/>
    <link:label xlink:type="resource" xlink:label="label_LiabilitiesFairValueDisclosure" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_LiabilitiesFairValueDisclosure" xml:lang="en-US" id="label_LiabilitiesFairValueDisclosure">Total liabilities measured at fair value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesFairValueDisclosure" xlink:to="label_LiabilitiesFairValueDisclosure" xlink:title="label: LiabilitiesFairValueDisclosure to label_LiabilitiesFairValueDisclosure"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity" xlink:label="RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity" xlink:title="RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity_lbl" xml:lang="en-US" id="us-gaap_RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity_lbl">Inter-segment operating revenues</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity" xlink:to="us-gaap_RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity_lbl" xlink:title="label: RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity to us-gaap_RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AllOtherSegmentsMember" xlink:label="AllOtherSegmentsMember" xlink:title="AllOtherSegmentsMember"/>
    <link:label xlink:type="resource" xlink:label="label_AllOtherSegmentsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AllOtherSegmentsMember" xml:lang="en-US" id="label_AllOtherSegmentsMember">All Other Segments [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AllOtherSegmentsMember" xlink:to="label_AllOtherSegmentsMember" xlink:title="label: AllOtherSegmentsMember to label_AllOtherSegmentsMember"/>
    <link:label xlink:type="resource" xlink:label="label_AllOtherSegmentsMember1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="label_AllOtherSegmentsMember1" xml:lang="en-US" id="label_AllOtherSegmentsMember1">Other [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AllOtherSegmentsMember" xlink:to="label_AllOtherSegmentsMember1" xlink:title="label: AllOtherSegmentsMember to label_AllOtherSegmentsMember1"/>
    <link:label xlink:type="resource" xlink:label="label_AllOtherSegmentsMember2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AllOtherSegmentsMember2" xml:lang="en-US" id="label_AllOtherSegmentsMember2">Other [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AllOtherSegmentsMember" xlink:to="label_AllOtherSegmentsMember2" xlink:title="label: AllOtherSegmentsMember to label_AllOtherSegmentsMember2"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SegmentDomain" xlink:label="SegmentDomain" xlink:title="SegmentDomain"/>
    <link:label xlink:type="resource" xlink:label="label_SegmentDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SegmentDomain" xml:lang="en-US" id="label_SegmentDomain">Segment [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SegmentDomain" xlink:to="label_SegmentDomain" xlink:title="label: SegmentDomain to label_SegmentDomain"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IntersegmentEliminationMember" xlink:label="IntersegmentEliminationMember" xlink:title="IntersegmentEliminationMember"/>
    <link:label xlink:type="resource" xlink:label="label_IntersegmentEliminationMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IntersegmentEliminationMember" xml:lang="en-US" id="label_IntersegmentEliminationMember">Intersegment Elimination [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IntersegmentEliminationMember" xlink:to="label_IntersegmentEliminationMember" xlink:title="label: IntersegmentEliminationMember to label_IntersegmentEliminationMember"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FutureAmortizationExpenseAfterYearFive" xlink:label="FutureAmortizationExpenseAfterYearFive" xlink:title="FutureAmortizationExpenseAfterYearFive"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_FutureAmortizationExpenseAfterYearFive_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_FutureAmortizationExpenseAfterYearFive_lbl" xml:lang="en-US" id="us-gaap_FutureAmortizationExpenseAfterYearFive_lbl">Thereafter</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FutureAmortizationExpenseAfterYearFive" xlink:to="us-gaap_FutureAmortizationExpenseAfterYearFive_lbl" xlink:title="label: FutureAmortizationExpenseAfterYearFive to us-gaap_FutureAmortizationExpenseAfterYearFive_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="FairValueMeasurementFrequencyDomain" xlink:title="FairValueMeasurementFrequencyDomain"/>
    <link:label xlink:type="resource" xlink:label="label_FairValueMeasurementFrequencyDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueMeasurementFrequencyDomain" xml:lang="en-US" id="label_FairValueMeasurementFrequencyDomain">Fair Value, Measurement Frequency [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueMeasurementFrequencyDomain" xlink:to="label_FairValueMeasurementFrequencyDomain" xlink:title="label: FairValueMeasurementFrequencyDomain to label_FairValueMeasurementFrequencyDomain"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="FairValueMeasurementsFairValueHierarchyDomain" xlink:title="FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:label xlink:type="resource" xlink:label="label_FairValueMeasurementsFairValueHierarchyDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueMeasurementsFairValueHierarchyDomain" xml:lang="en-US" id="label_FairValueMeasurementsFairValueHierarchyDomain">Fair Value, Measurements, Fair Value Hierarchy [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueMeasurementsFairValueHierarchyDomain" xlink:to="label_FairValueMeasurementsFairValueHierarchyDomain" xlink:title="label: FairValueMeasurementsFairValueHierarchyDomain to label_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember" xlink:label="FairValueMeasurementsRecurringMember" xlink:title="FairValueMeasurementsRecurringMember"/>
    <link:label xlink:type="resource" xlink:label="label_FairValueMeasurementsRecurringMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueMeasurementsRecurringMember" xml:lang="en-US" id="label_FairValueMeasurementsRecurringMember">Fair Value, Measurements, Recurring [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueMeasurementsRecurringMember" xlink:to="label_FairValueMeasurementsRecurringMember" xlink:title="label: FairValueMeasurementsRecurringMember to label_FairValueMeasurementsRecurringMember"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommonStockholdersEquity" xlink:label="CommonStockholdersEquity" xlink:title="CommonStockholdersEquity"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_CommonStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_CommonStockholdersEquity_lbl" xml:lang="en-US" id="us-gaap_CommonStockholdersEquity_lbl">Total common stockholders' equity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockholdersEquity" xlink:to="us-gaap_CommonStockholdersEquity_lbl" xlink:title="label: CommonStockholdersEquity to us-gaap_CommonStockholdersEquity_lbl"/>
    <link:label xlink:type="resource" xlink:label="label_CommonStockholdersEquity" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_CommonStockholdersEquity" xml:lang="en-US" id="label_CommonStockholdersEquity">Total common stockholders' equity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockholdersEquity" xlink:to="label_CommonStockholdersEquity" xlink:title="label: CommonStockholdersEquity to label_CommonStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GoodwillImpairedAccumulatedImpairmentLoss" xlink:label="GoodwillImpairedAccumulatedImpairmentLoss" xlink:title="GoodwillImpairedAccumulatedImpairmentLoss"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_lbl" xml:lang="en-US" id="us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_lbl">Accumulated impairment which occurred in prior periods</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillImpairedAccumulatedImpairmentLoss" xlink:to="us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_lbl" xlink:title="label: GoodwillImpairedAccumulatedImpairmentLoss to us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:title="OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl" xml:lang="en-US" id="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl">Basis of presentation [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl" xlink:title="label: OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract to us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ReceivablesAbstract" xlink:label="ReceivablesAbstract" xlink:title="ReceivablesAbstract"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_ReceivablesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ReceivablesAbstract_lbl" xml:lang="en-US" id="us-gaap_ReceivablesAbstract_lbl">Accounts receivable and allowance for doubtful accounts [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ReceivablesAbstract" xlink:to="us-gaap_ReceivablesAbstract_lbl" xlink:title="label: ReceivablesAbstract to us-gaap_ReceivablesAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="FairValueByFairValueHierarchyLevelAxis" xlink:title="FairValueByFairValueHierarchyLevelAxis"/>
    <link:label xlink:type="resource" xlink:label="label_FairValueHierarchyAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueHierarchyAxis" xml:lang="en-US" id="label_FairValueHierarchyAxis">Fair Value, Hierarchy [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueByFairValueHierarchyLevelAxis" xlink:to="label_FairValueHierarchyAxis" xlink:title="label: FairValueByFairValueHierarchyLevelAxis to label_FairValueHierarchyAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="FairValueByMeasurementFrequencyAxis" xlink:title="FairValueByMeasurementFrequencyAxis"/>
    <link:label xlink:type="resource" xlink:label="label_FairValueByMeasurementFrequencyAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueByMeasurementFrequencyAxis" xml:lang="en-US" id="label_FairValueByMeasurementFrequencyAxis">Fair Value by Measurement Frequency [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueByMeasurementFrequencyAxis" xlink:to="label_FairValueByMeasurementFrequencyAxis" xlink:title="label: FairValueByMeasurementFrequencyAxis to label_FairValueByMeasurementFrequencyAxis"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" xlink:label="ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" xlink:title="ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_lbl" xml:lang="en-US" id="us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_lbl">Assets and liabilities measured at fair value on a recurring basis</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" xlink:to="us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_lbl" xlink:title="label: ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock to us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfInventoryCurrentTableTextBlock" xlink:label="ScheduleOfInventoryCurrentTableTextBlock" xlink:title="ScheduleOfInventoryCurrentTableTextBlock"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_ScheduleOfInventoryCurrentTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ScheduleOfInventoryCurrentTableTextBlock_lbl" xml:lang="en-US" id="us-gaap_ScheduleOfInventoryCurrentTableTextBlock_lbl">Inventories</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfInventoryCurrentTableTextBlock" xlink:to="us-gaap_ScheduleOfInventoryCurrentTableTextBlock_lbl" xlink:title="label: ScheduleOfInventoryCurrentTableTextBlock to us-gaap_ScheduleOfInventoryCurrentTableTextBlock_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="CommitmentsAndContingenciesDisclosureAbstract" xlink:title="CommitmentsAndContingenciesDisclosureAbstract"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" xml:lang="en-US" id="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl">Contingencies [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommitmentsAndContingenciesDisclosureAbstract" xlink:to="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" xlink:title="label: CommitmentsAndContingenciesDisclosureAbstract to us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl1" xml:lang="en-US" id="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl1">Contingencies (Details) [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommitmentsAndContingenciesDisclosureAbstract" xlink:to="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl1" xlink:title="label: CommitmentsAndContingenciesDisclosureAbstract to us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:label="IncomeTaxDisclosureAbstract" xlink:title="IncomeTaxDisclosureAbstract"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_IncomeTaxDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_IncomeTaxDisclosureAbstract_lbl" xml:lang="en-US" id="us-gaap_IncomeTaxDisclosureAbstract_lbl">Income Taxes [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxDisclosureAbstract" xlink:to="us-gaap_IncomeTaxDisclosureAbstract_lbl" xlink:title="label: IncomeTaxDisclosureAbstract to us-gaap_IncomeTaxDisclosureAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:label="GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:title="GoodwillAndIntangibleAssetsDisclosureAbstract"/>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:to="us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_lbl" xlink:title="label: GoodwillAndIntangibleAssetsDisclosureAbstract to us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_lbl"/>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueDisclosuresAbstract" xlink:to="us-gaap_FairValueDisclosuresAbstract_lbl" xlink:title="label: FairValueDisclosuresAbstract to us-gaap_FairValueDisclosuresAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock" xlink:label="ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock" xlink:title="ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock_lbl" xml:lang="en-US" id="us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock_lbl">Cash expenditures for interest and income taxes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock" xlink:to="us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock_lbl" xlink:title="label: ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock to us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock_lbl"/>
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    <link:label xlink:type="resource" xlink:label="us-gaap_AssetsFairValueDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_AssetsFairValueDisclosureAbstract_lbl" xml:lang="en-US" id="us-gaap_AssetsFairValueDisclosureAbstract_lbl">Assets [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsFairValueDisclosureAbstract" xlink:to="us-gaap_AssetsFairValueDisclosureAbstract_lbl" xlink:title="label: AssetsFairValueDisclosureAbstract to us-gaap_AssetsFairValueDisclosureAbstract_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_AssetsFairValueDisclosureAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_AssetsFairValueDisclosureAbstract_lbl1" xml:lang="en-US" id="us-gaap_AssetsFairValueDisclosureAbstract_lbl1">Assets, Fair Value Disclosure [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsFairValueDisclosureAbstract" xlink:to="us-gaap_AssetsFairValueDisclosureAbstract_lbl1" xlink:title="label: AssetsFairValueDisclosureAbstract to us-gaap_AssetsFairValueDisclosureAbstract_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:label="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:title="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:label xlink:type="resource" xlink:label="label_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xml:lang="en-US" id="label_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable">Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:to="label_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:title="label: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable to label_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:title="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="lab_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_label_en-US" xlink:title="label: FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems to lab_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_label_en-US"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_LiabilitiesFairValueDisclosureAbstract" xlink:label="LiabilitiesFairValueDisclosureAbstract" xlink:title="LiabilitiesFairValueDisclosureAbstract"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_LiabilitiesFairValueDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_LiabilitiesFairValueDisclosureAbstract_lbl" xml:lang="en-US" id="us-gaap_LiabilitiesFairValueDisclosureAbstract_lbl">Liabilities [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesFairValueDisclosureAbstract" xlink:to="us-gaap_LiabilitiesFairValueDisclosureAbstract_lbl" xlink:title="label: LiabilitiesFairValueDisclosureAbstract to us-gaap_LiabilitiesFairValueDisclosureAbstract_lbl"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_LiabilitiesFairValueDisclosureAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LiabilitiesFairValueDisclosureAbstract_lbl1" xml:lang="en-US" id="us-gaap_LiabilitiesFairValueDisclosureAbstract_lbl1">Liabilities, Fair Value Disclosure [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesFairValueDisclosureAbstract" xlink:to="us-gaap_LiabilitiesFairValueDisclosureAbstract_lbl1" xlink:title="label: LiabilitiesFairValueDisclosureAbstract to us-gaap_LiabilitiesFairValueDisclosureAbstract_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract" xlink:label="EquityMethodInvestmentsAndJointVenturesAbstract" xlink:title="EquityMethodInvestmentsAndJointVenturesAbstract"/>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityMethodInvestmentsAndJointVenturesAbstract" xlink:to="us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_lbl" xlink:title="label: EquityMethodInvestmentsAndJointVenturesAbstract to us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_lbl"/>
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    <link:label xlink:type="resource" xlink:label="us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract_lbl" xml:lang="en-US" id="us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract_lbl">Discontinued operations [Abstract]</link:label>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SegmentReportingAbstract" xlink:to="us-gaap_SegmentReportingAbstract_lbl" xlink:title="label: SegmentReportingAbstract to us-gaap_SegmentReportingAbstract_lbl"/>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RegulatedOperationsAbstract" xlink:to="us-gaap_RegulatedOperationsAbstract_lbl" xlink:title="label: RegulatedOperationsAbstract to us-gaap_RegulatedOperationsAbstract_lbl"/>
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    <link:label xlink:type="resource" xlink:label="label_OtherIntangibleAssetsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OtherIntangibleAssetsMember" xml:lang="en-US" id="label_OtherIntangibleAssetsMember">Other Intangible Assets [Member]</link:label>
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    <link:label xlink:type="resource" xlink:label="label_OtherIntangibleAssetsMember1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_OtherIntangibleAssetsMember1" xml:lang="en-US" id="label_OtherIntangibleAssetsMember1">Other [Member}</link:label>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherAssetsMember" xlink:to="label_OtherAssetsMember" xlink:title="label: OtherAssetsMember to label_OtherAssetsMember"/>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DerivativesFairValueLineItems" xlink:label="DerivativesFairValueLineItems" xlink:title="DerivativesFairValueLineItems"/>
    <link:label xlink:type="resource" xlink:label="lab_DerivativesFairValueLineItems_label_en-US" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="lab_DerivativesFairValueLineItems_label_en-US" xml:lang="en-US" id="lab_DerivativesFairValueLineItems_label_en-US">Derivatives, Fair Value [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DerivativesFairValueLineItems" xlink:to="lab_DerivativesFairValueLineItems_label_en-US" xlink:title="label: DerivativesFairValueLineItems to lab_DerivativesFairValueLineItems_label_en-US"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_CommodityContractMember" xlink:label="CommodityContractMember" xlink:title="CommodityContractMember"/>
    <link:label xlink:type="resource" xlink:label="label_CommodityContractMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CommodityContractMember" xml:lang="en-US" id="label_CommodityContractMember">Commodity Contract [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommodityContractMember" xlink:to="label_CommodityContractMember" xlink:title="label: CommodityContractMember to label_CommodityContractMember"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_NondesignatedMember" xlink:label="NondesignatedMember" xlink:title="NondesignatedMember"/>
    <link:label xlink:type="resource" xlink:label="label_NotDesignatedAsHedgingInstrumentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NotDesignatedAsHedgingInstrumentMember" xml:lang="en-US" id="label_NotDesignatedAsHedgingInstrumentMember">Not Designated as Hedging Instrument [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NondesignatedMember" xlink:to="label_NotDesignatedAsHedgingInstrumentMember" xlink:title="label: NondesignatedMember to label_NotDesignatedAsHedgingInstrumentMember"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DerivativeNetLiabilityPositionAggregateFairValue" xlink:label="DerivativeNetLiabilityPositionAggregateFairValue" xlink:title="DerivativeNetLiabilityPositionAggregateFairValue"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_DerivativeNetLiabilityPositionAggregateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DerivativeNetLiabilityPositionAggregateFairValue_lbl" xml:lang="en-US" id="us-gaap_DerivativeNetLiabilityPositionAggregateFairValue_lbl">Derivative instruments with credit-risk-related contingent features, net liability position, aggregate fair value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DerivativeNetLiabilityPositionAggregateFairValue" xlink:to="us-gaap_DerivativeNetLiabilityPositionAggregateFairValue_lbl" xlink:title="label: DerivativeNetLiabilityPositionAggregateFairValue to us-gaap_DerivativeNetLiabilityPositionAggregateFairValue_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_AssetsNeededForImmediateSettlementAggregateFairValue" xlink:label="AssetsNeededForImmediateSettlementAggregateFairValue" xlink:title="AssetsNeededForImmediateSettlementAggregateFairValue"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_AssetsNeededForImmediateSettlementAggregateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_AssetsNeededForImmediateSettlementAggregateFairValue_lbl" xml:lang="en-US" id="us-gaap_AssetsNeededForImmediateSettlementAggregateFairValue_lbl">Aggregate Fair Value for Cascade and/or Intermountain of Assets Needed for Immediate Settlement if credit-risk-related contingent features were triggered</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsNeededForImmediateSettlementAggregateFairValue" xlink:to="us-gaap_AssetsNeededForImmediateSettlementAggregateFairValue_lbl" xlink:title="label: AssetsNeededForImmediateSettlementAggregateFairValue to us-gaap_AssetsNeededForImmediateSettlementAggregateFairValue_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DerivativeInstrumentsLossRecognizedInIncome" xlink:label="DerivativeInstrumentsLossRecognizedInIncome" xlink:title="DerivativeInstrumentsLossRecognizedInIncome"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsLossRecognizedInIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DerivativeInstrumentsLossRecognizedInIncome_lbl" xml:lang="en-US" id="us-gaap_DerivativeInstrumentsLossRecognizedInIncome_lbl">Loss on the derivative instrument that did not qualify for hedge accounting reported in operating revenues</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DerivativeInstrumentsLossRecognizedInIncome" xlink:to="us-gaap_DerivativeInstrumentsLossRecognizedInIncome_lbl" xlink:title="label: DerivativeInstrumentsLossRecognizedInIncome to us-gaap_DerivativeInstrumentsLossRecognizedInIncome_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="DerivativeContractTypeDomain" xlink:title="DerivativeContractTypeDomain"/>
    <link:label xlink:type="resource" xlink:label="label_DerivativeContractTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DerivativeContractTypeDomain" xml:lang="en-US" id="label_DerivativeContractTypeDomain">Derivative Contract Type [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DerivativeContractTypeDomain" xlink:to="label_DerivativeContractTypeDomain" xlink:title="label: DerivativeContractTypeDomain to label_DerivativeContractTypeDomain"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock" xlink:label="ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock" xlink:title="ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_lbl" xml:lang="en-US" id="us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_lbl">Schedule of Derivative Instruments by Balance Sheet Location and Fair Value Table</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock" xlink:to="us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_lbl" xlink:title="label: ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock to us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:label="FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:title="FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
    <link:label xlink:type="resource" xlink:label="label_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeTable" xml:lang="en-US" id="label_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeTable">Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:to="label_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeTable" xlink:title="label: FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable to label_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeTable"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DesignatedAsHedgingInstrumentMember" xlink:label="DesignatedAsHedgingInstrumentMember" xlink:title="DesignatedAsHedgingInstrumentMember"/>
    <link:label xlink:type="resource" xlink:label="label_DesignatedAsHedgingInstrumentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DesignatedAsHedgingInstrumentMember" xml:lang="en-US" id="label_DesignatedAsHedgingInstrumentMember">Designated as Hedging Instrument [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DesignatedAsHedgingInstrumentMember" xlink:to="label_DesignatedAsHedgingInstrumentMember" xlink:title="label: DesignatedAsHedgingInstrumentMember to label_DesignatedAsHedgingInstrumentMember"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_AmendmentFlag" xlink:label="AmendmentFlag" xlink:title="AmendmentFlag"/>
    <link:label xlink:type="resource" xlink:label="dei_AmendmentFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_AmendmentFlag_lbl" xml:lang="en-US" id="dei_AmendmentFlag_lbl">Amendment Flag</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmendmentFlag" xlink:to="dei_AmendmentFlag_lbl" xlink:title="label: AmendmentFlag to dei_AmendmentFlag_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="CurrentFiscalYearEndDate" xlink:title="CurrentFiscalYearEndDate"/>
    <link:label xlink:type="resource" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_CurrentFiscalYearEndDate_lbl" xml:lang="en-US" id="dei_CurrentFiscalYearEndDate_lbl">Current Fiscal Year End Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CurrentFiscalYearEndDate" xlink:to="dei_CurrentFiscalYearEndDate_lbl" xlink:title="label: CurrentFiscalYearEndDate to dei_CurrentFiscalYearEndDate_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_DocumentPeriodEndDate" xlink:label="DocumentPeriodEndDate" xlink:title="DocumentPeriodEndDate"/>
    <link:label xlink:type="resource" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_DocumentPeriodEndDate_lbl" xml:lang="en-US" id="dei_DocumentPeriodEndDate_lbl">Document Period End Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentPeriodEndDate" xlink:to="dei_DocumentPeriodEndDate_lbl" xlink:title="label: DocumentPeriodEndDate to dei_DocumentPeriodEndDate_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityTextBlock" xlink:label="EntityTextBlock" xlink:title="EntityTextBlock"/>
    <link:label xlink:type="resource" xlink:label="dei_EntityTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_EntityTextBlock_lbl" xml:lang="en-US" id="dei_EntityTextBlock_lbl">Entity [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityTextBlock" xlink:to="dei_EntityTextBlock_lbl" xlink:title="label: EntityTextBlock to dei_EntityTextBlock_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityWellKnownSeasonedIssuer" xlink:label="EntityWellKnownSeasonedIssuer" xlink:title="EntityWellKnownSeasonedIssuer"/>
    <link:label xlink:type="resource" xlink:label="dei_EntityWellKnownSeasonedIssuer_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_EntityWellKnownSeasonedIssuer_lbl" xml:lang="en-US" id="dei_EntityWellKnownSeasonedIssuer_lbl">Entity Well-known Seasoned Issuer</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityWellKnownSeasonedIssuer" xlink:to="dei_EntityWellKnownSeasonedIssuer_lbl" xlink:title="label: EntityWellKnownSeasonedIssuer to dei_EntityWellKnownSeasonedIssuer_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityVoluntaryFilers" xlink:label="EntityVoluntaryFilers" xlink:title="EntityVoluntaryFilers"/>
    <link:label xlink:type="resource" xlink:label="dei_EntityVoluntaryFilers_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_EntityVoluntaryFilers_lbl" xml:lang="en-US" id="dei_EntityVoluntaryFilers_lbl">Entity Voluntary Filers</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityVoluntaryFilers" xlink:to="dei_EntityVoluntaryFilers_lbl" xlink:title="label: EntityVoluntaryFilers to dei_EntityVoluntaryFilers_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityCurrentReportingStatus" xlink:label="EntityCurrentReportingStatus" xlink:title="EntityCurrentReportingStatus"/>
    <link:label xlink:type="resource" xlink:label="dei_EntityCurrentReportingStatus_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_EntityCurrentReportingStatus_lbl" xml:lang="en-US" id="dei_EntityCurrentReportingStatus_lbl">Entity Current Reporting Status</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityCurrentReportingStatus" xlink:to="dei_EntityCurrentReportingStatus_lbl" xlink:title="label: EntityCurrentReportingStatus to dei_EntityCurrentReportingStatus_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityFilerCategory" xlink:label="EntityFilerCategory" xlink:title="EntityFilerCategory"/>
    <link:label xlink:type="resource" xlink:label="dei_EntityFilerCategory_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_EntityFilerCategory_lbl" xml:lang="en-US" id="dei_EntityFilerCategory_lbl">Entity Filer Category</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityFilerCategory" xlink:to="dei_EntityFilerCategory_lbl" xlink:title="label: EntityFilerCategory to dei_EntityFilerCategory_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityPublicFloat" xlink:label="EntityPublicFloat" xlink:title="EntityPublicFloat"/>
    <link:label xlink:type="resource" xlink:label="dei_EntityPublicFloat_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_EntityPublicFloat_lbl" xml:lang="en-US" id="dei_EntityPublicFloat_lbl">Entity Public Float</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityPublicFloat" xlink:to="dei_EntityPublicFloat_lbl" xlink:title="label: EntityPublicFloat to dei_EntityPublicFloat_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityRegistrantName" xlink:label="EntityRegistrantName" xlink:title="EntityRegistrantName"/>
    <link:label xlink:type="resource" xlink:label="dei_EntityRegistrantName_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_EntityRegistrantName_lbl" xml:lang="en-US" id="dei_EntityRegistrantName_lbl">Entity Registrant Name</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityRegistrantName" xlink:to="dei_EntityRegistrantName_lbl" xlink:title="label: EntityRegistrantName to dei_EntityRegistrantName_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityCentralIndexKey" xlink:label="EntityCentralIndexKey" xlink:title="EntityCentralIndexKey"/>
    <link:label xlink:type="resource" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_EntityCentralIndexKey_lbl" xml:lang="en-US" id="dei_EntityCentralIndexKey_lbl">Entity Central Index Key</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityCentralIndexKey" xlink:to="dei_EntityCentralIndexKey_lbl" xlink:title="label: EntityCentralIndexKey to dei_EntityCentralIndexKey_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="EntityCommonStockSharesOutstanding" xlink:title="EntityCommonStockSharesOutstanding"/>
    <link:label xlink:type="resource" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_EntityCommonStockSharesOutstanding_lbl" xml:lang="en-US" id="dei_EntityCommonStockSharesOutstanding_lbl">Entity Common Stock, Shares Outstanding</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EntityCommonStockSharesOutstanding" xlink:to="dei_EntityCommonStockSharesOutstanding_lbl" xlink:title="label: EntityCommonStockSharesOutstanding to dei_EntityCommonStockSharesOutstanding_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:label="DocumentFiscalYearFocus" xlink:title="DocumentFiscalYearFocus"/>
    <link:label xlink:type="resource" xlink:label="dei_DocumentFiscalYearFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_DocumentFiscalYearFocus_lbl" xml:lang="en-US" id="dei_DocumentFiscalYearFocus_lbl">Document Fiscal Year Focus</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentFiscalYearFocus" xlink:to="dei_DocumentFiscalYearFocus_lbl" xlink:title="label: DocumentFiscalYearFocus to dei_DocumentFiscalYearFocus_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="DocumentFiscalPeriodFocus" xlink:title="DocumentFiscalPeriodFocus"/>
    <link:label xlink:type="resource" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_DocumentFiscalPeriodFocus_lbl" xml:lang="en-US" id="dei_DocumentFiscalPeriodFocus_lbl">Document Fiscal Period Focus</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentFiscalPeriodFocus" xlink:to="dei_DocumentFiscalPeriodFocus_lbl" xlink:title="label: DocumentFiscalPeriodFocus to dei_DocumentFiscalPeriodFocus_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd#dei_DocumentType" xlink:label="DocumentType" xlink:title="DocumentType"/>
    <link:label xlink:type="resource" xlink:label="dei_DocumentType_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_DocumentType_lbl" xml:lang="en-US" id="dei_DocumentType_lbl">Document Type</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentType" xlink:to="dei_DocumentType_lbl" xlink:title="label: DocumentType to dei_DocumentType_lbl"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/invest/2011/invest-2011-01-31.xsd#invest_DerivativeNonmonetaryNotionalAmount" xlink:label="DerivativeNonmonetaryNotionalAmount" xlink:title="DerivativeNonmonetaryNotionalAmount"/>
    <link:label xlink:type="resource" xlink:label="invest_DerivativeNonmonetaryNotionalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="invest_DerivativeNonmonetaryNotionalAmount_lbl" xml:lang="en-US" id="invest_DerivativeNonmonetaryNotionalAmount_lbl">Oil call option agreement with total forward notional volumes (in Bbl)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DerivativeNonmonetaryNotionalAmount" xlink:to="invest_DerivativeNonmonetaryNotionalAmount_lbl" xlink:title="label: DerivativeNonmonetaryNotionalAmount to invest_DerivativeNonmonetaryNotionalAmount_lbl"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_ElectricNaturalGasDistributionAndPipelineAndEnergyServicesRevenues" xlink:label="ElectricNaturalGasDistributionAndPipelineAndEnergyServicesRevenues" xlink:title="ElectricNaturalGasDistributionAndPipelineAndEnergyServicesRevenues"/>
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    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_OperationAndMaintenanceAbstract" xlink:label="OperationAndMaintenanceAbstract" xlink:title="OperationAndMaintenanceAbstract"/>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsLossPerCommonShareBasic" xlink:to="mdu_EarningsLossPerCommonShareBasic_lbl2" xlink:title="label: EarningsLossPerCommonShareBasic to mdu_EarningsLossPerCommonShareBasic_lbl2"/>
    <link:label xlink:type="resource" xlink:label="label_EarningsLossPerCommonShareBasic" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_EarningsLossPerCommonShareBasic" xml:lang="en-US" id="label_EarningsLossPerCommonShareBasic">Earnings per common share -- basic</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsLossPerCommonShareBasic" xlink:to="label_EarningsLossPerCommonShareBasic" xlink:title="label: EarningsLossPerCommonShareBasic to label_EarningsLossPerCommonShareBasic"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_EarningsLossPerCommonShareDiluted" xlink:label="EarningsLossPerCommonShareDiluted" xlink:title="EarningsLossPerCommonShareDiluted"/>
    <link:label xlink:type="resource" xlink:label="mdu_EarningsLossPerCommonShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_EarningsLossPerCommonShareDiluted_lbl" xml:lang="en-US" id="mdu_EarningsLossPerCommonShareDiluted_lbl">Earnings Loss Per Common Share Diluted</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsLossPerCommonShareDiluted" xlink:to="mdu_EarningsLossPerCommonShareDiluted_lbl" xlink:title="label: EarningsLossPerCommonShareDiluted to mdu_EarningsLossPerCommonShareDiluted_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_EarningsLossPerCommonShareDiluted_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_EarningsLossPerCommonShareDiluted_lbl1" xml:lang="en-US" id="mdu_EarningsLossPerCommonShareDiluted_lbl1">The amount of earnings or loss for the period per each share of common stock and dilutive common stock equivalents outstanding during the reporting period.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsLossPerCommonShareDiluted" xlink:to="mdu_EarningsLossPerCommonShareDiluted_lbl1" xlink:title="label: EarningsLossPerCommonShareDiluted to mdu_EarningsLossPerCommonShareDiluted_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_EarningsLossPerCommonShareDiluted_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_EarningsLossPerCommonShareDiluted_lbl2" xml:lang="en-US" id="mdu_EarningsLossPerCommonShareDiluted_lbl2">Earnings per common share -- diluted</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsLossPerCommonShareDiluted" xlink:to="mdu_EarningsLossPerCommonShareDiluted_lbl2" xlink:title="label: EarningsLossPerCommonShareDiluted to mdu_EarningsLossPerCommonShareDiluted_lbl2"/>
    <link:label xlink:type="resource" xlink:label="label_EarningsLossPerCommonShareDiluted" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_EarningsLossPerCommonShareDiluted" xml:lang="en-US" id="label_EarningsLossPerCommonShareDiluted">Earnings per common share -- diluted</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EarningsLossPerCommonShareDiluted" xlink:to="label_EarningsLossPerCommonShareDiluted" xlink:title="label: EarningsLossPerCommonShareDiluted to label_EarningsLossPerCommonShareDiluted"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_PrepaymentsAndOtherCurrentAssets" xlink:label="PrepaymentsAndOtherCurrentAssets" xlink:title="PrepaymentsAndOtherCurrentAssets"/>
    <link:label xlink:type="resource" xlink:label="mdu_PrepaymentsAndOtherCurrentAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_PrepaymentsAndOtherCurrentAssets_lbl" xml:lang="en-US" id="mdu_PrepaymentsAndOtherCurrentAssets_lbl">Prepayments And Other Current Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PrepaymentsAndOtherCurrentAssets" xlink:to="mdu_PrepaymentsAndOtherCurrentAssets_lbl" xlink:title="label: PrepaymentsAndOtherCurrentAssets to mdu_PrepaymentsAndOtherCurrentAssets_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_PrepaymentsAndOtherCurrentAssets_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_PrepaymentsAndOtherCurrentAssets_lbl1" xml:lang="en-US" id="mdu_PrepaymentsAndOtherCurrentAssets_lbl1">Sum of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer. And the aggregate carrying amount, as of the balance sheet date, of current assets not separately disclosed in the balance sheet due to materiality considerations. Current assets are expected to be realized or consumed within one year (or the normal operating cycle, if longer).</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PrepaymentsAndOtherCurrentAssets" xlink:to="mdu_PrepaymentsAndOtherCurrentAssets_lbl1" xlink:title="label: PrepaymentsAndOtherCurrentAssets to mdu_PrepaymentsAndOtherCurrentAssets_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_PrepaymentsAndOtherCurrentAssets_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_PrepaymentsAndOtherCurrentAssets_lbl2" xml:lang="en-US" id="mdu_PrepaymentsAndOtherCurrentAssets_lbl2">Prepayments and other current assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PrepaymentsAndOtherCurrentAssets" xlink:to="mdu_PrepaymentsAndOtherCurrentAssets_lbl2" xlink:title="label: PrepaymentsAndOtherCurrentAssets to mdu_PrepaymentsAndOtherCurrentAssets_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_InvestmentsNoncurrent" xlink:label="InvestmentsNoncurrent" xlink:title="InvestmentsNoncurrent"/>
    <link:label xlink:type="resource" xlink:label="mdu_InvestmentsNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_InvestmentsNoncurrent_lbl" xml:lang="en-US" id="mdu_InvestmentsNoncurrent_lbl">Investments Noncurrent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvestmentsNoncurrent" xlink:to="mdu_InvestmentsNoncurrent_lbl" xlink:title="label: InvestmentsNoncurrent to mdu_InvestmentsNoncurrent_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_InvestmentsNoncurrent_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_InvestmentsNoncurrent_lbl1" xml:lang="en-US" id="mdu_InvestmentsNoncurrent_lbl1">Noncurrent Investments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvestmentsNoncurrent" xlink:to="mdu_InvestmentsNoncurrent_lbl1" xlink:title="label: InvestmentsNoncurrent to mdu_InvestmentsNoncurrent_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_InvestmentsNoncurrent_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_InvestmentsNoncurrent_lbl2" xml:lang="en-US" id="mdu_InvestmentsNoncurrent_lbl2">Investments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvestmentsNoncurrent" xlink:to="mdu_InvestmentsNoncurrent_lbl2" xlink:title="label: InvestmentsNoncurrent to mdu_InvestmentsNoncurrent_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_DeferredChargesAndOtherAssets" xlink:label="DeferredChargesAndOtherAssets" xlink:title="DeferredChargesAndOtherAssets"/>
    <link:label xlink:type="resource" xlink:label="mdu_DeferredChargesAndOtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_DeferredChargesAndOtherAssets_lbl" xml:lang="en-US" id="mdu_DeferredChargesAndOtherAssets_lbl">Deferred Charges And Other Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredChargesAndOtherAssets" xlink:to="mdu_DeferredChargesAndOtherAssets_lbl" xlink:title="label: DeferredChargesAndOtherAssets to mdu_DeferredChargesAndOtherAssets_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_DeferredChargesAndOtherAssets_lbl1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_DeferredChargesAndOtherAssets_lbl1" xml:lang="en-US" id="mdu_DeferredChargesAndOtherAssets_lbl1">Deferred charges and other assets:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DeferredChargesAndOtherAssets" xlink:to="mdu_DeferredChargesAndOtherAssets_lbl1" xlink:title="label: DeferredChargesAndOtherAssets to mdu_DeferredChargesAndOtherAssets_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_CommonStockholdersEquityAbstract" xlink:label="CommonStockholdersEquityAbstract" xlink:title="CommonStockholdersEquityAbstract"/>
    <link:label xlink:type="resource" xlink:label="mdu_CommonStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_CommonStockholdersEquityAbstract_lbl" xml:lang="en-US" id="mdu_CommonStockholdersEquityAbstract_lbl">Common Stockholders Equity [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockholdersEquityAbstract" xlink:to="mdu_CommonStockholdersEquityAbstract_lbl" xlink:title="label: CommonStockholdersEquityAbstract to mdu_CommonStockholdersEquityAbstract_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_CommonStockholdersEquityAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_CommonStockholdersEquityAbstract_lbl1" xml:lang="en-US" id="mdu_CommonStockholdersEquityAbstract_lbl1">Common stockholders' equity:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommonStockholdersEquityAbstract" xlink:to="mdu_CommonStockholdersEquityAbstract_lbl1" xlink:title="label: CommonStockholdersEquityAbstract to mdu_CommonStockholdersEquityAbstract_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_OtherNoncurrentChanges" xlink:label="OtherNoncurrentChanges" xlink:title="OtherNoncurrentChanges"/>
    <link:label xlink:type="resource" xlink:label="mdu_OtherNoncurrentChanges_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_OtherNoncurrentChanges_lbl" xml:lang="en-US" id="mdu_OtherNoncurrentChanges_lbl">Other Noncurrent Changes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherNoncurrentChanges" xlink:to="mdu_OtherNoncurrentChanges_lbl" xlink:title="label: OtherNoncurrentChanges to mdu_OtherNoncurrentChanges_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_OtherNoncurrentChanges_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_OtherNoncurrentChanges_lbl1" xml:lang="en-US" id="mdu_OtherNoncurrentChanges_lbl1">The net change during the reporting period in other noncurrent assets and other noncurrent liabilities.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherNoncurrentChanges" xlink:to="mdu_OtherNoncurrentChanges_lbl1" xlink:title="label: OtherNoncurrentChanges to mdu_OtherNoncurrentChanges_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_OtherNoncurrentChanges_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_OtherNoncurrentChanges_lbl2" xml:lang="en-US" id="mdu_OtherNoncurrentChanges_lbl2">Other noncurrent changes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherNoncurrentChanges" xlink:to="mdu_OtherNoncurrentChanges_lbl2" xlink:title="label: OtherNoncurrentChanges to mdu_OtherNoncurrentChanges_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_CapitalExpenditures" xlink:label="CapitalExpenditures" xlink:title="CapitalExpenditures"/>
    <link:label xlink:type="resource" xlink:label="mdu_CapitalExpenditures_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_CapitalExpenditures_lbl" xml:lang="en-US" id="mdu_CapitalExpenditures_lbl">Capital Expenditures</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CapitalExpenditures" xlink:to="mdu_CapitalExpenditures_lbl" xlink:title="label: CapitalExpenditures to mdu_CapitalExpenditures_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_CapitalExpenditures_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_CapitalExpenditures_lbl1" xml:lang="en-US" id="mdu_CapitalExpenditures_lbl1">The cash outflow for capital expenditures.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CapitalExpenditures" xlink:to="mdu_CapitalExpenditures_lbl1" xlink:title="label: CapitalExpenditures to mdu_CapitalExpenditures_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_CapitalExpenditures_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_CapitalExpenditures_lbl2" xml:lang="en-US" id="mdu_CapitalExpenditures_lbl2">Capital expenditures</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CapitalExpenditures" xlink:to="mdu_CapitalExpenditures_lbl2" xlink:title="label: CapitalExpenditures to mdu_CapitalExpenditures_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_AcquisitionsNetOfCashAcquired" xlink:label="AcquisitionsNetOfCashAcquired" xlink:title="AcquisitionsNetOfCashAcquired"/>
    <link:label xlink:type="resource" xlink:label="mdu_AcquisitionsNetOfCashAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_AcquisitionsNetOfCashAcquired_lbl" xml:lang="en-US" id="mdu_AcquisitionsNetOfCashAcquired_lbl">Acquisitions Net Of Cash Acquired</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AcquisitionsNetOfCashAcquired" xlink:to="mdu_AcquisitionsNetOfCashAcquired_lbl" xlink:title="label: AcquisitionsNetOfCashAcquired to mdu_AcquisitionsNetOfCashAcquired_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_AcquisitionsNetOfCashAcquired_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_AcquisitionsNetOfCashAcquired_lbl1" xml:lang="en-US" id="mdu_AcquisitionsNetOfCashAcquired_lbl1">The cash outflow associated with acquisitions, net of the cash acquired.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AcquisitionsNetOfCashAcquired" xlink:to="mdu_AcquisitionsNetOfCashAcquired_lbl1" xlink:title="label: AcquisitionsNetOfCashAcquired to mdu_AcquisitionsNetOfCashAcquired_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_AcquisitionsNetOfCashAcquired_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_AcquisitionsNetOfCashAcquired_lbl2" xml:lang="en-US" id="mdu_AcquisitionsNetOfCashAcquired_lbl2">Acquisitions, net of cash acquired</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AcquisitionsNetOfCashAcquired" xlink:to="mdu_AcquisitionsNetOfCashAcquired_lbl2" xlink:title="label: AcquisitionsNetOfCashAcquired to mdu_AcquisitionsNetOfCashAcquired_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_RepaymentOfShortTermBorrowings" xlink:label="RepaymentOfShortTermBorrowings" xlink:title="RepaymentOfShortTermBorrowings"/>
    <link:label xlink:type="resource" xlink:label="mdu_RepaymentOfShortTermBorrowings_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_RepaymentOfShortTermBorrowings_lbl" xml:lang="en-US" id="mdu_RepaymentOfShortTermBorrowings_lbl">Repayment Of Short Term Borrowings</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RepaymentOfShortTermBorrowings" xlink:to="mdu_RepaymentOfShortTermBorrowings_lbl" xlink:title="label: RepaymentOfShortTermBorrowings to mdu_RepaymentOfShortTermBorrowings_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_RepaymentOfShortTermBorrowings_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_RepaymentOfShortTermBorrowings_lbl1" xml:lang="en-US" id="mdu_RepaymentOfShortTermBorrowings_lbl1">The cash outflow to pay off an obligation from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings have a short-term maturity.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RepaymentOfShortTermBorrowings" xlink:to="mdu_RepaymentOfShortTermBorrowings_lbl1" xlink:title="label: RepaymentOfShortTermBorrowings to mdu_RepaymentOfShortTermBorrowings_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_RepaymentOfShortTermBorrowings_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_RepaymentOfShortTermBorrowings_lbl2" xml:lang="en-US" id="mdu_RepaymentOfShortTermBorrowings_lbl2">Repayment of short-term borrowings</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RepaymentOfShortTermBorrowings" xlink:to="mdu_RepaymentOfShortTermBorrowings_lbl2" xlink:title="label: RepaymentOfShortTermBorrowings to mdu_RepaymentOfShortTermBorrowings_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_TotalDeferredChargesAndOtherAssets" xlink:label="TotalDeferredChargesAndOtherAssets" xlink:title="TotalDeferredChargesAndOtherAssets"/>
    <link:label xlink:type="resource" xlink:label="mdu_TotalDeferredChargesAndOtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_TotalDeferredChargesAndOtherAssets_lbl" xml:lang="en-US" id="mdu_TotalDeferredChargesAndOtherAssets_lbl">Total Deferred Charges And Other Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TotalDeferredChargesAndOtherAssets" xlink:to="mdu_TotalDeferredChargesAndOtherAssets_lbl" xlink:title="label: TotalDeferredChargesAndOtherAssets to mdu_TotalDeferredChargesAndOtherAssets_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_TotalDeferredChargesAndOtherAssets_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_TotalDeferredChargesAndOtherAssets_lbl1" xml:lang="en-US" id="mdu_TotalDeferredChargesAndOtherAssets_lbl1">Sum of the carrying amounts as of the balance sheet date of total deferred charges and other assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TotalDeferredChargesAndOtherAssets" xlink:to="mdu_TotalDeferredChargesAndOtherAssets_lbl1" xlink:title="label: TotalDeferredChargesAndOtherAssets to mdu_TotalDeferredChargesAndOtherAssets_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_TotalDeferredChargesAndOtherAssets_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_TotalDeferredChargesAndOtherAssets_lbl2" xml:lang="en-US" id="mdu_TotalDeferredChargesAndOtherAssets_lbl2">Total deferred charges and other assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TotalDeferredChargesAndOtherAssets" xlink:to="mdu_TotalDeferredChargesAndOtherAssets_lbl2" xlink:title="label: TotalDeferredChargesAndOtherAssets to mdu_TotalDeferredChargesAndOtherAssets_lbl2"/>
    <link:label xlink:type="resource" xlink:label="label_TotalDeferredChargesAndOtherAssets" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="label_TotalDeferredChargesAndOtherAssets" xml:lang="en-US" id="label_TotalDeferredChargesAndOtherAssets">Total deferred charges and other assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TotalDeferredChargesAndOtherAssets" xlink:to="label_TotalDeferredChargesAndOtherAssets" xlink:title="label: TotalDeferredChargesAndOtherAssets to label_TotalDeferredChargesAndOtherAssets"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_SeasonalityOfOperationsAbstract" xlink:label="SeasonalityOfOperationsAbstract" xlink:title="SeasonalityOfOperationsAbstract"/>
    <link:label xlink:type="resource" xlink:label="mdu_SeasonalityOfOperationsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_SeasonalityOfOperationsAbstract_lbl" xml:lang="en-US" id="mdu_SeasonalityOfOperationsAbstract_lbl">Seasonality of operations [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SeasonalityOfOperationsAbstract" xlink:to="mdu_SeasonalityOfOperationsAbstract_lbl" xlink:title="label: SeasonalityOfOperationsAbstract to mdu_SeasonalityOfOperationsAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_Accountsreceivableallowancefordoubtfulaccounts" xlink:label="Accountsreceivableallowancefordoubtfulaccounts" xlink:title="Accountsreceivableallowancefordoubtfulaccounts"/>
    <link:label xlink:type="resource" xlink:label="mdu_Accountsreceivableallowancefordoubtfulaccounts_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_Accountsreceivableallowancefordoubtfulaccounts_lbl" xml:lang="en-US" id="mdu_Accountsreceivableallowancefordoubtfulaccounts_lbl">AccountsReceivableAllowanceForDoubtfulAccounts</link:label>
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    <link:label xlink:type="resource" xlink:label="mdu_Accountsreceivableallowancefordoubtfulaccounts_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_Accountsreceivableallowancefordoubtfulaccounts_lbl1" xml:lang="en-US" id="mdu_Accountsreceivableallowancefordoubtfulaccounts_lbl1">An element designated to encapsulate the entire schedule of any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. Also, presents disclosure of balances of receivables past due 90 days or more.</link:label>
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    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_InventoriesAndNaturalGasInStorageTextBlock" xlink:label="InventoriesAndNaturalGasInStorageTextBlock" xlink:title="InventoriesAndNaturalGasInStorageTextBlock"/>
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    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_DerivativeInstrumentsAndHedgingActivitiesDisclosure" xlink:label="DerivativeInstrumentsAndHedgingActivitiesDisclosure" xlink:title="DerivativeInstrumentsAndHedgingActivitiesDisclosure"/>
    <link:label xlink:type="resource" xlink:label="mdu_DerivativeInstrumentsAndHedgingActivitiesDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_DerivativeInstrumentsAndHedgingActivitiesDisclosure_lbl" xml:lang="en-US" id="mdu_DerivativeInstrumentsAndHedgingActivitiesDisclosure_lbl">Derivative Instruments And Hedging Activities Disclosure</link:label>
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    <link:label xlink:type="resource" xlink:label="mdu_DerivativeInstrumentsAndHedgingActivitiesDisclosure_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_DerivativeInstrumentsAndHedgingActivitiesDisclosure_lbl1" xml:lang="en-US" id="mdu_DerivativeInstrumentsAndHedgingActivitiesDisclosure_lbl1">This element can be used to disclose the entity's entire derivative instruments and hedging activities disclosure as a single block of text. Describes an entity's risk management strategies, derivatives in hedging activities and non-hedging derivative instruments, the assets, obligations, liabilities, revenues and expenses arising there from, and the amounts of and methodologies and assumptions used in determining the amounts of such items.</link:label>
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    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_EquityMethodInvestmentSummarizedFinancialInformationLongTermDebt" xlink:label="EquityMethodInvestmentSummarizedFinancialInformationLongTermDebt" xlink:title="EquityMethodInvestmentSummarizedFinancialInformationLongTermDebt"/>
    <link:label xlink:type="resource" xlink:label="mdu_EquityMethodInvestmentSummarizedFinancialInformationLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_EquityMethodInvestmentSummarizedFinancialInformationLongTermDebt_lbl" xml:lang="en-US" id="mdu_EquityMethodInvestmentSummarizedFinancialInformationLongTermDebt_lbl">Equity Method Investment Summarized Financial Information Long Term Debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityMethodInvestmentSummarizedFinancialInformationLongTermDebt" xlink:to="mdu_EquityMethodInvestmentSummarizedFinancialInformationLongTermDebt_lbl" xlink:title="label: EquityMethodInvestmentSummarizedFinancialInformationLongTermDebt to mdu_EquityMethodInvestmentSummarizedFinancialInformationLongTermDebt_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_EquityMethodInvestmentSummarizedFinancialInformationLongTermDebt_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_EquityMethodInvestmentSummarizedFinancialInformationLongTermDebt_lbl1" xml:lang="en-US" id="mdu_EquityMethodInvestmentSummarizedFinancialInformationLongTermDebt_lbl1">The amount of long-term debt reported by an equity method investment of the entity.</link:label>
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    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsChangeInFairValue" xlink:label="DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsChangeInFairValue" xlink:title="DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsChangeInFairValue"/>
    <link:label xlink:type="resource" xlink:label="mdu_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsChangeInFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsChangeInFairValue_lbl" xml:lang="en-US" id="mdu_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsChangeInFairValue_lbl">Derivative Instruments Not Designated As Hedging Instruments Change In Fair Value</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsChangeInFairValue" xlink:to="mdu_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsChangeInFairValue_lbl" xlink:title="label: DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsChangeInFairValue to mdu_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsChangeInFairValue_lbl"/>
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    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_NotionalForwardAmountOfCashFlowHedgeInstrumentsNaturalGasBasisSwaps" xlink:label="NotionalForwardAmountOfCashFlowHedgeInstrumentsNaturalGasBasisSwaps" xlink:title="NotionalForwardAmountOfCashFlowHedgeInstrumentsNaturalGasBasisSwaps"/>
    <link:label xlink:type="resource" xlink:label="mdu_NotionalForwardAmountOfCashFlowHedgeInstrumentsNaturalGasBasisSwaps_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_NotionalForwardAmountOfCashFlowHedgeInstrumentsNaturalGasBasisSwaps_lbl" xml:lang="en-US" id="mdu_NotionalForwardAmountOfCashFlowHedgeInstrumentsNaturalGasBasisSwaps_lbl">Notional Forward Amount Of Cash Flow Hedge Instruments Natural Gas Basis Swaps</link:label>
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    <link:label xlink:type="resource" xlink:label="mdu_NotionalForwardAmountOfCashFlowHedgeInstrumentsNaturalGasBasisSwaps_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_NotionalForwardAmountOfCashFlowHedgeInstrumentsNaturalGasBasisSwaps_lbl1" xml:lang="en-US" id="mdu_NotionalForwardAmountOfCashFlowHedgeInstrumentsNaturalGasBasisSwaps_lbl1">Nonmonetary Notional forward Amount of natural gas basis swap agreements in MMBtu, Derivative Instruments Designated as cash flow hedging Instruments</link:label>
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    <link:label xlink:type="resource" xlink:label="mdu_NotionalForwardAmountOfCashFlowHedgeInstrumentsNaturalGasBasisSwaps_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_NotionalForwardAmountOfCashFlowHedgeInstrumentsNaturalGasBasisSwaps_lbl2" xml:lang="en-US" id="mdu_NotionalForwardAmountOfCashFlowHedgeInstrumentsNaturalGasBasisSwaps_lbl2">Nonmonetary Notional forward Amount of natural gas basis swap agreements in million MMBtu, Derivative Instruments Designated as cash flow hedging Instruments</link:label>
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    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_NotionalForwardAmountOfCashFlowHedgeInstrumentsOilSwapsAndCollars" xlink:label="NotionalForwardAmountOfCashFlowHedgeInstrumentsOilSwapsAndCollars" xlink:title="NotionalForwardAmountOfCashFlowHedgeInstrumentsOilSwapsAndCollars"/>
    <link:label xlink:type="resource" xlink:label="mdu_NotionalForwardAmountOfCashFlowHedgeInstrumentsOilSwapsAndCollars_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_NotionalForwardAmountOfCashFlowHedgeInstrumentsOilSwapsAndCollars_lbl" xml:lang="en-US" id="mdu_NotionalForwardAmountOfCashFlowHedgeInstrumentsOilSwapsAndCollars_lbl">Notional Forward Amount Of Cash Flow Hedge Instruments Oil Swaps And Collars</link:label>
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    <link:label xlink:type="resource" xlink:label="mdu_NotionalForwardAmountOfCashFlowHedgeInstrumentsOilSwapsAndCollars_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_NotionalForwardAmountOfCashFlowHedgeInstrumentsOilSwapsAndCollars_lbl1" xml:lang="en-US" id="mdu_NotionalForwardAmountOfCashFlowHedgeInstrumentsOilSwapsAndCollars_lbl1">Nonmonetary Notional forward Amount of oil swap, collar and/or put agreements in Bbl, Derivative Instruments Designated as cash flow hedging Instruments</link:label>
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    <link:label xlink:type="resource" xlink:label="mdu_NotionalForwardAmountOfCashFlowHedgeInstrumentsOilSwapsAndCollars_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_NotionalForwardAmountOfCashFlowHedgeInstrumentsOilSwapsAndCollars_lbl2" xml:lang="en-US" id="mdu_NotionalForwardAmountOfCashFlowHedgeInstrumentsOilSwapsAndCollars_lbl2">Nonmonetary Notional forward Amount of oil swap, collar and/or put agreements in Bbl, Derivative Instruments Designated as cash flow hedging Instruments</link:label>
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    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_DerivativeNetLiabilityPositionAggregateFairValueForCashFlowHedgingInstruments" xlink:label="DerivativeNetLiabilityPositionAggregateFairValueForCashFlowHedgingInstruments" xlink:title="DerivativeNetLiabilityPositionAggregateFairValueForCashFlowHedgingInstruments"/>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DerivativeNetLiabilityPositionAggregateFairValueForCashFlowHedgingInstruments" xlink:to="mdu_DerivativeNetLiabilityPositionAggregateFairValueForCashFlowHedgingInstruments_lbl" xlink:title="label: DerivativeNetLiabilityPositionAggregateFairValueForCashFlowHedgingInstruments to mdu_DerivativeNetLiabilityPositionAggregateFairValueForCashFlowHedgingInstruments_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_DerivativeNetLiabilityPositionAggregateFairValueForCashFlowHedgingInstruments_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_DerivativeNetLiabilityPositionAggregateFairValueForCashFlowHedgingInstruments_lbl1" xml:lang="en-US" id="mdu_DerivativeNetLiabilityPositionAggregateFairValueForCashFlowHedgingInstruments_lbl1">The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as cash flow hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain or loss on that instrument.</link:label>
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    <link:label xlink:type="resource" xlink:label="mdu_PeriodDefinedBenefitPaymentsMadeSubsequentToRetirementOrDeath_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_PeriodDefinedBenefitPaymentsMadeSubsequentToRetirementOrDeath_lbl1" xml:lang="en-US" id="mdu_PeriodDefinedBenefitPaymentsMadeSubsequentToRetirementOrDeath_lbl1">The period during which the defined benefit payments for the unfunded, nonqualified benefit plan for executive officers and certain key management employees are made following the employee's retirement or to their beneficiaries upon death.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PeriodDefinedBenefitPaymentsMadeSubsequentToRetirementOrDeath" xlink:to="mdu_PeriodDefinedBenefitPaymentsMadeSubsequentToRetirementOrDeath_lbl1" xlink:title="label: PeriodDefinedBenefitPaymentsMadeSubsequentToRetirementOrDeath to mdu_PeriodDefinedBenefitPaymentsMadeSubsequentToRetirementOrDeath_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_PeriodDefinedBenefitPaymentsMadeSubsequentToRetirementOrDeath_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_PeriodDefinedBenefitPaymentsMadeSubsequentToRetirementOrDeath_lbl2" xml:lang="en-US" id="mdu_PeriodDefinedBenefitPaymentsMadeSubsequentToRetirementOrDeath_lbl2">Period in which defined benefit payments for unfunded, nonqualified plan are made subsequent to retirement or death</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PeriodDefinedBenefitPaymentsMadeSubsequentToRetirementOrDeath" xlink:to="mdu_PeriodDefinedBenefitPaymentsMadeSubsequentToRetirementOrDeath_lbl2" xlink:title="label: PeriodDefinedBenefitPaymentsMadeSubsequentToRetirementOrDeath to mdu_PeriodDefinedBenefitPaymentsMadeSubsequentToRetirementOrDeath_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_NetPeriodicBenefitCostForUnfundedNonqualifiedBenefitPlan" xlink:label="NetPeriodicBenefitCostForUnfundedNonqualifiedBenefitPlan" xlink:title="NetPeriodicBenefitCostForUnfundedNonqualifiedBenefitPlan"/>
    <link:label xlink:type="resource" xlink:label="mdu_NetPeriodicBenefitCostForUnfundedNonqualifiedBenefitPlan_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_NetPeriodicBenefitCostForUnfundedNonqualifiedBenefitPlan_lbl" xml:lang="en-US" id="mdu_NetPeriodicBenefitCostForUnfundedNonqualifiedBenefitPlan_lbl">Net Periodic Benefit Cost For Unfunded Nonqualified Benefit Plan</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetPeriodicBenefitCostForUnfundedNonqualifiedBenefitPlan" xlink:to="mdu_NetPeriodicBenefitCostForUnfundedNonqualifiedBenefitPlan_lbl" xlink:title="label: NetPeriodicBenefitCostForUnfundedNonqualifiedBenefitPlan to mdu_NetPeriodicBenefitCostForUnfundedNonqualifiedBenefitPlan_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_NetPeriodicBenefitCostForUnfundedNonqualifiedBenefitPlan_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_NetPeriodicBenefitCostForUnfundedNonqualifiedBenefitPlan_lbl1" xml:lang="en-US" id="mdu_NetPeriodicBenefitCostForUnfundedNonqualifiedBenefitPlan_lbl1">The total amount of net periodic benefit cost for an unfunded, nonqualified benefit plans for executive officers and certain key management employees for the period. Periodic benefit costs include the following components: service cost, interest cost, gain or loss, prior service cost or credit, transition asset or obligation, and gain or loss due to settlements or curtailments).</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetPeriodicBenefitCostForUnfundedNonqualifiedBenefitPlan" xlink:to="mdu_NetPeriodicBenefitCostForUnfundedNonqualifiedBenefitPlan_lbl1" xlink:title="label: NetPeriodicBenefitCostForUnfundedNonqualifiedBenefitPlan to mdu_NetPeriodicBenefitCostForUnfundedNonqualifiedBenefitPlan_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_NetPeriodicBenefitCostForUnfundedNonqualifiedBenefitPlan_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_NetPeriodicBenefitCostForUnfundedNonqualifiedBenefitPlan_lbl2" xml:lang="en-US" id="mdu_NetPeriodicBenefitCostForUnfundedNonqualifiedBenefitPlan_lbl2">Net periodic benefit cost for unfunded, nonqualified benefit plan</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetPeriodicBenefitCostForUnfundedNonqualifiedBenefitPlan" xlink:to="mdu_NetPeriodicBenefitCostForUnfundedNonqualifiedBenefitPlan_lbl2" xlink:title="label: NetPeriodicBenefitCostForUnfundedNonqualifiedBenefitPlan to mdu_NetPeriodicBenefitCostForUnfundedNonqualifiedBenefitPlan_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_RetireeMedicalBenefitsAbstract" xlink:label="RetireeMedicalBenefitsAbstract" xlink:title="RetireeMedicalBenefitsAbstract"/>
    <link:label xlink:type="resource" xlink:label="mdu_RetireeMedicalBenefitsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_RetireeMedicalBenefitsAbstract_lbl" xml:lang="en-US" id="mdu_RetireeMedicalBenefitsAbstract_lbl">Retiree Medical Benefits [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RetireeMedicalBenefitsAbstract" xlink:to="mdu_RetireeMedicalBenefitsAbstract_lbl" xlink:title="label: RetireeMedicalBenefitsAbstract to mdu_RetireeMedicalBenefitsAbstract_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_RetireeMedicalBenefitsAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_RetireeMedicalBenefitsAbstract_lbl1" xml:lang="en-US" id="mdu_RetireeMedicalBenefitsAbstract_lbl1">Retired medical benefits</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RetireeMedicalBenefitsAbstract" xlink:to="mdu_RetireeMedicalBenefitsAbstract_lbl1" xlink:title="label: RetireeMedicalBenefitsAbstract to mdu_RetireeMedicalBenefitsAbstract_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_UnfundedNonqualifiedBenefitPlanAbstract" xlink:label="UnfundedNonqualifiedBenefitPlanAbstract" xlink:title="UnfundedNonqualifiedBenefitPlanAbstract"/>
    <link:label xlink:type="resource" xlink:label="mdu_UnfundedNonqualifiedBenefitPlanAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_UnfundedNonqualifiedBenefitPlanAbstract_lbl" xml:lang="en-US" id="mdu_UnfundedNonqualifiedBenefitPlanAbstract_lbl">Unfunded Nonqualified Benefit Plan [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UnfundedNonqualifiedBenefitPlanAbstract" xlink:to="mdu_UnfundedNonqualifiedBenefitPlanAbstract_lbl" xlink:title="label: UnfundedNonqualifiedBenefitPlanAbstract to mdu_UnfundedNonqualifiedBenefitPlanAbstract_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_UnfundedNonqualifiedBenefitPlanAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_UnfundedNonqualifiedBenefitPlanAbstract_lbl1" xml:lang="en-US" id="mdu_UnfundedNonqualifiedBenefitPlanAbstract_lbl1">Unfunded, nonqualified benefit plan</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UnfundedNonqualifiedBenefitPlanAbstract" xlink:to="mdu_UnfundedNonqualifiedBenefitPlanAbstract_lbl1" xlink:title="label: UnfundedNonqualifiedBenefitPlanAbstract to mdu_UnfundedNonqualifiedBenefitPlanAbstract_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_AmountOfSuretyBondsOutstanding" xlink:label="AmountOfSuretyBondsOutstanding" xlink:title="AmountOfSuretyBondsOutstanding"/>
    <link:label xlink:type="resource" xlink:label="mdu_AmountOfSuretyBondsOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_AmountOfSuretyBondsOutstanding_lbl" xml:lang="en-US" id="mdu_AmountOfSuretyBondsOutstanding_lbl">Amount Of Surety Bonds Outstanding</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmountOfSuretyBondsOutstanding" xlink:to="mdu_AmountOfSuretyBondsOutstanding_lbl" xlink:title="label: AmountOfSuretyBondsOutstanding to mdu_AmountOfSuretyBondsOutstanding_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_AmountOfSuretyBondsOutstanding_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_AmountOfSuretyBondsOutstanding_lbl1" xml:lang="en-US" id="mdu_AmountOfSuretyBondsOutstanding_lbl1">Amount of surety bonds outstanding related to construction contracts and reclamation obligations.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmountOfSuretyBondsOutstanding" xlink:to="mdu_AmountOfSuretyBondsOutstanding_lbl1" xlink:title="label: AmountOfSuretyBondsOutstanding to mdu_AmountOfSuretyBondsOutstanding_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_AmountOfSuretyBondsOutstanding_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_AmountOfSuretyBondsOutstanding_lbl2" xml:lang="en-US" id="mdu_AmountOfSuretyBondsOutstanding_lbl2">Amount of surety bonds outstanding</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmountOfSuretyBondsOutstanding" xlink:to="mdu_AmountOfSuretyBondsOutstanding_lbl2" xlink:title="label: AmountOfSuretyBondsOutstanding to mdu_AmountOfSuretyBondsOutstanding_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_FixedMaximumAmountOfGuarantee" xlink:label="FixedMaximumAmountOfGuarantee" xlink:title="FixedMaximumAmountOfGuarantee"/>
    <link:label xlink:type="resource" xlink:label="mdu_FixedMaximumAmountOfGuarantee_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_FixedMaximumAmountOfGuarantee_lbl" xml:lang="en-US" id="mdu_FixedMaximumAmountOfGuarantee_lbl">Fixed Maximum Amount Of Guarantee</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FixedMaximumAmountOfGuarantee" xlink:to="mdu_FixedMaximumAmountOfGuarantee_lbl" xlink:title="label: FixedMaximumAmountOfGuarantee to mdu_FixedMaximumAmountOfGuarantee_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_FixedMaximumAmountOfGuarantee_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_FixedMaximumAmountOfGuarantee_lbl1" xml:lang="en-US" id="mdu_FixedMaximumAmountOfGuarantee_lbl1">Natural gas transportation and storage agreement fixed maximum amount of performance guarantee.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FixedMaximumAmountOfGuarantee" xlink:to="mdu_FixedMaximumAmountOfGuarantee_lbl1" xlink:title="label: FixedMaximumAmountOfGuarantee to mdu_FixedMaximumAmountOfGuarantee_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_FixedMaximumAmountOfGuarantee_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_FixedMaximumAmountOfGuarantee_lbl2" xml:lang="en-US" id="mdu_FixedMaximumAmountOfGuarantee_lbl2">Natural gas transportation and storage agreement fixed maximum amount of performance guarantee of a related party</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FixedMaximumAmountOfGuarantee" xlink:to="mdu_FixedMaximumAmountOfGuarantee_lbl2" xlink:title="label: FixedMaximumAmountOfGuarantee to mdu_FixedMaximumAmountOfGuarantee_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_LetterOfCreditGuarantee" xlink:label="LetterOfCreditGuarantee" xlink:title="LetterOfCreditGuarantee"/>
    <link:label xlink:type="resource" xlink:label="mdu_LetterOfCreditGuarantee_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_LetterOfCreditGuarantee_lbl" xml:lang="en-US" id="mdu_LetterOfCreditGuarantee_lbl">Letter Of Credit Guarantee</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LetterOfCreditGuarantee" xlink:to="mdu_LetterOfCreditGuarantee_lbl" xlink:title="label: LetterOfCreditGuarantee to mdu_LetterOfCreditGuarantee_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_LetterOfCreditGuarantee_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_LetterOfCreditGuarantee_lbl1" xml:lang="en-US" id="mdu_LetterOfCreditGuarantee_lbl1">Bank letter of credit guaranteeing obligation's under contract.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LetterOfCreditGuarantee" xlink:to="mdu_LetterOfCreditGuarantee_lbl1" xlink:title="label: LetterOfCreditGuarantee to mdu_LetterOfCreditGuarantee_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_LetterOfCreditGuarantee_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_LetterOfCreditGuarantee_lbl2" xml:lang="en-US" id="mdu_LetterOfCreditGuarantee_lbl2">Bicent's bank letter of credit guaranteeing CEM's obligation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LetterOfCreditGuarantee" xlink:to="mdu_LetterOfCreditGuarantee_lbl2" xlink:title="label: LetterOfCreditGuarantee to mdu_LetterOfCreditGuarantee_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_AmountOfCompensatoryDamagesInDemandNotice" xlink:label="AmountOfCompensatoryDamagesInDemandNotice" xlink:title="AmountOfCompensatoryDamagesInDemandNotice"/>
    <link:label xlink:type="resource" xlink:label="mdu_AmountOfCompensatoryDamagesInDemandNotice_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_AmountOfCompensatoryDamagesInDemandNotice_lbl" xml:lang="en-US" id="mdu_AmountOfCompensatoryDamagesInDemandNotice_lbl">Amount Of Compensatory Damages In Demand Notice</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmountOfCompensatoryDamagesInDemandNotice" xlink:to="mdu_AmountOfCompensatoryDamagesInDemandNotice_lbl" xlink:title="label: AmountOfCompensatoryDamagesInDemandNotice to mdu_AmountOfCompensatoryDamagesInDemandNotice_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_AmountOfCompensatoryDamagesInDemandNotice_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_AmountOfCompensatoryDamagesInDemandNotice_lbl1" xml:lang="en-US" id="mdu_AmountOfCompensatoryDamagesInDemandNotice_lbl1">Amount of compensatory damages in notice of demand related to the construction contract litigation.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmountOfCompensatoryDamagesInDemandNotice" xlink:to="mdu_AmountOfCompensatoryDamagesInDemandNotice_lbl1" xlink:title="label: AmountOfCompensatoryDamagesInDemandNotice to mdu_AmountOfCompensatoryDamagesInDemandNotice_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_AmountOfCompensatoryDamagesInDemandNotice_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_AmountOfCompensatoryDamagesInDemandNotice_lbl2" xml:lang="en-US" id="mdu_AmountOfCompensatoryDamagesInDemandNotice_lbl2">Amount of compensatory damages in LPP's notice of demand</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmountOfCompensatoryDamagesInDemandNotice" xlink:to="mdu_AmountOfCompensatoryDamagesInDemandNotice_lbl2" xlink:title="label: AmountOfCompensatoryDamagesInDemandNotice to mdu_AmountOfCompensatoryDamagesInDemandNotice_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_ContractDisputeChargeToOperationAndMaintenanceExpenseAfterTax" xlink:label="ContractDisputeChargeToOperationAndMaintenanceExpenseAfterTax" xlink:title="ContractDisputeChargeToOperationAndMaintenanceExpenseAfterTax"/>
    <link:label xlink:type="resource" xlink:label="mdu_ContractDisputeChargeToOperationAndMaintenanceExpenseAfterTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_ContractDisputeChargeToOperationAndMaintenanceExpenseAfterTax_lbl" xml:lang="en-US" id="mdu_ContractDisputeChargeToOperationAndMaintenanceExpenseAfterTax_lbl">Contract Dispute Charge To Operation And Maintenance Expense After Tax</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ContractDisputeChargeToOperationAndMaintenanceExpenseAfterTax" xlink:to="mdu_ContractDisputeChargeToOperationAndMaintenanceExpenseAfterTax_lbl" xlink:title="label: ContractDisputeChargeToOperationAndMaintenanceExpenseAfterTax to mdu_ContractDisputeChargeToOperationAndMaintenanceExpenseAfterTax_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_ContractDisputeChargeToOperationAndMaintenanceExpenseAfterTax_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_ContractDisputeChargeToOperationAndMaintenanceExpenseAfterTax_lbl1" xml:lang="en-US" id="mdu_ContractDisputeChargeToOperationAndMaintenanceExpenseAfterTax_lbl1">Natural gas gathering contract dispute charges after tax recorded to operation and maintenance expense.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ContractDisputeChargeToOperationAndMaintenanceExpenseAfterTax" xlink:to="mdu_ContractDisputeChargeToOperationAndMaintenanceExpenseAfterTax_lbl1" xlink:title="label: ContractDisputeChargeToOperationAndMaintenanceExpenseAfterTax to mdu_ContractDisputeChargeToOperationAndMaintenanceExpenseAfterTax_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_ContractDisputeChargeToOperationAndMaintenanceExpenseAfterTax_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_ContractDisputeChargeToOperationAndMaintenanceExpenseAfterTax_lbl2" xml:lang="en-US" id="mdu_ContractDisputeChargeToOperationAndMaintenanceExpenseAfterTax_lbl2">Amount of natural gas gathering contract dispute charged to operation and maintenance expense, after tax</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ContractDisputeChargeToOperationAndMaintenanceExpenseAfterTax" xlink:to="mdu_ContractDisputeChargeToOperationAndMaintenanceExpenseAfterTax_lbl2" xlink:title="label: ContractDisputeChargeToOperationAndMaintenanceExpenseAfterTax to mdu_ContractDisputeChargeToOperationAndMaintenanceExpenseAfterTax_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_EnvironmentalMattersInvestigativeCosts" xlink:label="EnvironmentalMattersInvestigativeCosts" xlink:title="EnvironmentalMattersInvestigativeCosts"/>
    <link:label xlink:type="resource" xlink:label="mdu_EnvironmentalMattersInvestigativeCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_EnvironmentalMattersInvestigativeCosts_lbl" xml:lang="en-US" id="mdu_EnvironmentalMattersInvestigativeCosts_lbl">Environmental Matters Investigative Costs</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EnvironmentalMattersInvestigativeCosts" xlink:to="mdu_EnvironmentalMattersInvestigativeCosts_lbl" xlink:title="label: EnvironmentalMattersInvestigativeCosts to mdu_EnvironmentalMattersInvestigativeCosts_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_EnvironmentalMattersInvestigativeCosts_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_EnvironmentalMattersInvestigativeCosts_lbl1" xml:lang="en-US" id="mdu_EnvironmentalMattersInvestigativeCosts_lbl1">Estimated investigative costs (in excess of )</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EnvironmentalMattersInvestigativeCosts" xlink:to="mdu_EnvironmentalMattersInvestigativeCosts_lbl1" xlink:title="label: EnvironmentalMattersInvestigativeCosts to mdu_EnvironmentalMattersInvestigativeCosts_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_EnvironmentalMattersInvestigativeCosts_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_EnvironmentalMattersInvestigativeCosts_lbl2" xml:lang="en-US" id="mdu_EnvironmentalMattersInvestigativeCosts_lbl2">Estimated investigative costs (in excess of)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EnvironmentalMattersInvestigativeCosts" xlink:to="mdu_EnvironmentalMattersInvestigativeCosts_lbl2" xlink:title="label: EnvironmentalMattersInvestigativeCosts to mdu_EnvironmentalMattersInvestigativeCosts_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_NumberOfPurchaseAndSaleAgreementsIndemnifiedByCompany" xlink:label="NumberOfPurchaseAndSaleAgreementsIndemnifiedByCompany" xlink:title="NumberOfPurchaseAndSaleAgreementsIndemnifiedByCompany"/>
    <link:label xlink:type="resource" xlink:label="mdu_NumberOfPurchaseAndSaleAgreementsIndemnifiedByCompany_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_NumberOfPurchaseAndSaleAgreementsIndemnifiedByCompany_lbl" xml:lang="en-US" id="mdu_NumberOfPurchaseAndSaleAgreementsIndemnifiedByCompany_lbl">Number Of Purchase And Sale Agreements Indemnified By Company</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfPurchaseAndSaleAgreementsIndemnifiedByCompany" xlink:to="mdu_NumberOfPurchaseAndSaleAgreementsIndemnifiedByCompany_lbl" xlink:title="label: NumberOfPurchaseAndSaleAgreementsIndemnifiedByCompany to mdu_NumberOfPurchaseAndSaleAgreementsIndemnifiedByCompany_lbl"/>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ReceivablesPastDue90DaysOrMore" xlink:to="mdu_ReceivablesPastDue90DaysOrMore_lbl" xlink:title="label: ReceivablesPastDue90DaysOrMore to mdu_ReceivablesPastDue90DaysOrMore_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_ReceivablesPastDue90DaysOrMore_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_ReceivablesPastDue90DaysOrMore_lbl1" xml:lang="en-US" id="mdu_ReceivablesPastDue90DaysOrMore_lbl1">Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, which are past due 90 days or more.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ReceivablesPastDue90DaysOrMore" xlink:to="mdu_ReceivablesPastDue90DaysOrMore_lbl1" xlink:title="label: ReceivablesPastDue90DaysOrMore to mdu_ReceivablesPastDue90DaysOrMore_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_ReceivablesPastDue90DaysOrMore_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_ReceivablesPastDue90DaysOrMore_lbl2" xml:lang="en-US" id="mdu_ReceivablesPastDue90DaysOrMore_lbl2">Total balance of receivables past due 90 days or more</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ReceivablesPastDue90DaysOrMore" xlink:to="mdu_ReceivablesPastDue90DaysOrMore_lbl2" xlink:title="label: ReceivablesPastDue90DaysOrMore to mdu_ReceivablesPastDue90DaysOrMore_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_MaterialsAndSupplies" xlink:label="MaterialsAndSupplies" xlink:title="MaterialsAndSupplies"/>
    <link:label xlink:type="resource" xlink:label="mdu_MaterialsAndSupplies_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_MaterialsAndSupplies_lbl" xml:lang="en-US" id="mdu_MaterialsAndSupplies_lbl">Materials and supplies</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MaterialsAndSupplies" xlink:to="mdu_MaterialsAndSupplies_lbl" xlink:title="label: MaterialsAndSupplies to mdu_MaterialsAndSupplies_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_MaterialsAndSupplies_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_MaterialsAndSupplies_lbl1" xml:lang="en-US" id="mdu_MaterialsAndSupplies_lbl1">Aggregated amount of materials and supplies that will be consumed. This amount is net of valuation reserves and adjustments.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MaterialsAndSupplies" xlink:to="mdu_MaterialsAndSupplies_lbl1" xlink:title="label: MaterialsAndSupplies to mdu_MaterialsAndSupplies_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_AsphaltOilInventory" xlink:label="AsphaltOilInventory" xlink:title="AsphaltOilInventory"/>
    <link:label xlink:type="resource" xlink:label="mdu_AsphaltOilInventory_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_AsphaltOilInventory_lbl" xml:lang="en-US" id="mdu_AsphaltOilInventory_lbl">Asphalt oil inventory</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AsphaltOilInventory" xlink:to="mdu_AsphaltOilInventory_lbl" xlink:title="label: AsphaltOilInventory to mdu_AsphaltOilInventory_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_AsphaltOilInventory_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_AsphaltOilInventory_lbl1" xml:lang="en-US" id="mdu_AsphaltOilInventory_lbl1">Aggregated amount of asphalt oil inventory that will be consumed. This amount is net of valuation reserves and adjustments.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AsphaltOilInventory" xlink:to="mdu_AsphaltOilInventory_lbl1" xlink:title="label: AsphaltOilInventory to mdu_AsphaltOilInventory_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_AsphaltOilInventory_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_AsphaltOilInventory_lbl2" xml:lang="en-US" id="mdu_AsphaltOilInventory_lbl2">Asphalt oil</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AsphaltOilInventory" xlink:to="mdu_AsphaltOilInventory_lbl2" xlink:title="label: AsphaltOilInventory to mdu_AsphaltOilInventory_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_MerchandiseForResale" xlink:label="MerchandiseForResale" xlink:title="MerchandiseForResale"/>
    <link:label xlink:type="resource" xlink:label="mdu_MerchandiseForResale_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_MerchandiseForResale_lbl" xml:lang="en-US" id="mdu_MerchandiseForResale_lbl">Merchandise for resale</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MerchandiseForResale" xlink:to="mdu_MerchandiseForResale_lbl" xlink:title="label: MerchandiseForResale to mdu_MerchandiseForResale_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_MerchandiseForResale_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_MerchandiseForResale_lbl1" xml:lang="en-US" id="mdu_MerchandiseForResale_lbl1">Aggregated amount of merchandise for resale. This amount is net of valuation reserves and adjustments.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MerchandiseForResale" xlink:to="mdu_MerchandiseForResale_lbl1" xlink:title="label: MerchandiseForResale to mdu_MerchandiseForResale_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_DescriptionOfNewAccountingPronouncementsTextBlock" xlink:label="DescriptionOfNewAccountingPronouncementsTextBlock" xlink:title="DescriptionOfNewAccountingPronouncementsTextBlock"/>
    <link:label xlink:type="resource" xlink:label="mdu_DescriptionOfNewAccountingPronouncementsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_DescriptionOfNewAccountingPronouncementsTextBlock_lbl" xml:lang="en-US" id="mdu_DescriptionOfNewAccountingPronouncementsTextBlock_lbl">Description Of New Accounting Pronouncements [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DescriptionOfNewAccountingPronouncementsTextBlock" xlink:to="mdu_DescriptionOfNewAccountingPronouncementsTextBlock_lbl" xlink:title="label: DescriptionOfNewAccountingPronouncementsTextBlock to mdu_DescriptionOfNewAccountingPronouncementsTextBlock_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_DescriptionOfNewAccountingPronouncementsTextBlock_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_DescriptionOfNewAccountingPronouncementsTextBlock_lbl1" xml:lang="en-US" id="mdu_DescriptionOfNewAccountingPronouncementsTextBlock_lbl1">The entire disclosure for new accounting pronouncements that have been issued and adopted or not yet adopted by the entity.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DescriptionOfNewAccountingPronouncementsTextBlock" xlink:to="mdu_DescriptionOfNewAccountingPronouncementsTextBlock_lbl1" xlink:title="label: DescriptionOfNewAccountingPronouncementsTextBlock to mdu_DescriptionOfNewAccountingPronouncementsTextBlock_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_DescriptionOfNewAccountingPronouncementsTextBlock_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_DescriptionOfNewAccountingPronouncementsTextBlock_lbl2" xml:lang="en-US" id="mdu_DescriptionOfNewAccountingPronouncementsTextBlock_lbl2">New accounting standards</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DescriptionOfNewAccountingPronouncementsTextBlock" xlink:to="mdu_DescriptionOfNewAccountingPronouncementsTextBlock_lbl2" xlink:title="label: DescriptionOfNewAccountingPronouncementsTextBlock to mdu_DescriptionOfNewAccountingPronouncementsTextBlock_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_ComprehensiveIncomeAbstract" xlink:label="ComprehensiveIncomeAbstract" xlink:title="ComprehensiveIncomeAbstract"/>
    <link:label xlink:type="resource" xlink:label="mdu_ComprehensiveIncomeAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_ComprehensiveIncomeAbstract_lbl" xml:lang="en-US" id="mdu_ComprehensiveIncomeAbstract_lbl">Comprehensive income [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComprehensiveIncomeAbstract" xlink:to="mdu_ComprehensiveIncomeAbstract_lbl" xlink:title="label: ComprehensiveIncomeAbstract to mdu_ComprehensiveIncomeAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_ComprehensiveIncomeAndComponentsOfOtherComprehensiveIncomeLossAbstract" xlink:label="ComprehensiveIncomeAndComponentsOfOtherComprehensiveIncomeLossAbstract" xlink:title="ComprehensiveIncomeAndComponentsOfOtherComprehensiveIncomeLossAbstract"/>
    <link:label xlink:type="resource" xlink:label="mdu_ComprehensiveIncomeAndComponentsOfOtherComprehensiveIncomeLossAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_ComprehensiveIncomeAndComponentsOfOtherComprehensiveIncomeLossAbstract_lbl" xml:lang="en-US" id="mdu_ComprehensiveIncomeAndComponentsOfOtherComprehensiveIncomeLossAbstract_lbl">Comprehensive income and components of other comprehensive income (loss) [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ComprehensiveIncomeAndComponentsOfOtherComprehensiveIncomeLossAbstract" xlink:to="mdu_ComprehensiveIncomeAndComponentsOfOtherComprehensiveIncomeLossAbstract_lbl" xlink:title="label: ComprehensiveIncomeAndComponentsOfOtherComprehensiveIncomeLossAbstract to mdu_ComprehensiveIncomeAndComponentsOfOtherComprehensiveIncomeLossAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_EquityMethodInvestmentRealizedGainLossOnDisposalAfterTax" xlink:label="EquityMethodInvestmentRealizedGainLossOnDisposalAfterTax" xlink:title="EquityMethodInvestmentRealizedGainLossOnDisposalAfterTax"/>
    <link:label xlink:type="resource" xlink:label="mdu_EquityMethodInvestmentRealizedGainLossOnDisposalAfterTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_EquityMethodInvestmentRealizedGainLossOnDisposalAfterTax_lbl" xml:lang="en-US" id="mdu_EquityMethodInvestmentRealizedGainLossOnDisposalAfterTax_lbl">Equity Method Investment Realized Gain Loss On Disposal After Tax</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityMethodInvestmentRealizedGainLossOnDisposalAfterTax" xlink:to="mdu_EquityMethodInvestmentRealizedGainLossOnDisposalAfterTax_lbl" xlink:title="label: EquityMethodInvestmentRealizedGainLossOnDisposalAfterTax to mdu_EquityMethodInvestmentRealizedGainLossOnDisposalAfterTax_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_EquityMethodInvestmentRealizedGainLossOnDisposalAfterTax_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_EquityMethodInvestmentRealizedGainLossOnDisposalAfterTax_lbl1" xml:lang="en-US" id="mdu_EquityMethodInvestmentRealizedGainLossOnDisposalAfterTax_lbl1">This item represents the amount of the after-tax gain (loss) arising from the disposal of an equity method investment.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityMethodInvestmentRealizedGainLossOnDisposalAfterTax" xlink:to="mdu_EquityMethodInvestmentRealizedGainLossOnDisposalAfterTax_lbl1" xlink:title="label: EquityMethodInvestmentRealizedGainLossOnDisposalAfterTax to mdu_EquityMethodInvestmentRealizedGainLossOnDisposalAfterTax_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_EquityMethodInvestmentRealizedGainLossOnDisposalAfterTax_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_EquityMethodInvestmentRealizedGainLossOnDisposalAfterTax_lbl2" xml:lang="en-US" id="mdu_EquityMethodInvestmentRealizedGainLossOnDisposalAfterTax_lbl2">Recognized gain on sale after tax</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityMethodInvestmentRealizedGainLossOnDisposalAfterTax" xlink:to="mdu_EquityMethodInvestmentRealizedGainLossOnDisposalAfterTax_lbl2" xlink:title="label: EquityMethodInvestmentRealizedGainLossOnDisposalAfterTax to mdu_EquityMethodInvestmentRealizedGainLossOnDisposalAfterTax_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_PercentageOwnershipInterestInEquityMethodInvestmentSold" xlink:label="PercentageOwnershipInterestInEquityMethodInvestmentSold" xlink:title="PercentageOwnershipInterestInEquityMethodInvestmentSold"/>
    <link:label xlink:type="resource" xlink:label="mdu_PercentageOwnershipInterestInEquityMethodInvestmentSold_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_PercentageOwnershipInterestInEquityMethodInvestmentSold_lbl" xml:lang="en-US" id="mdu_PercentageOwnershipInterestInEquityMethodInvestmentSold_lbl">Percentage Ownership Interest in Equity Method Investment Sold</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOwnershipInterestInEquityMethodInvestmentSold" xlink:to="mdu_PercentageOwnershipInterestInEquityMethodInvestmentSold_lbl" xlink:title="label: PercentageOwnershipInterestInEquityMethodInvestmentSold to mdu_PercentageOwnershipInterestInEquityMethodInvestmentSold_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_PercentageOwnershipInterestInEquityMethodInvestmentSold_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_PercentageOwnershipInterestInEquityMethodInvestmentSold_lbl1" xml:lang="en-US" id="mdu_PercentageOwnershipInterestInEquityMethodInvestmentSold_lbl1">Percentage of company's ownership interest in ECTE sold.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOwnershipInterestInEquityMethodInvestmentSold" xlink:to="mdu_PercentageOwnershipInterestInEquityMethodInvestmentSold_lbl1" xlink:title="label: PercentageOwnershipInterestInEquityMethodInvestmentSold to mdu_PercentageOwnershipInterestInEquityMethodInvestmentSold_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_PercentageOwnershipInterestInEquityMethodInvestmentSold_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_PercentageOwnershipInterestInEquityMethodInvestmentSold_lbl2" xml:lang="en-US" id="mdu_PercentageOwnershipInterestInEquityMethodInvestmentSold_lbl2">Ownership interest in ECTE sold (in hundredths)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOwnershipInterestInEquityMethodInvestmentSold" xlink:to="mdu_PercentageOwnershipInterestInEquityMethodInvestmentSold_lbl2" xlink:title="label: PercentageOwnershipInterestInEquityMethodInvestmentSold to mdu_PercentageOwnershipInterestInEquityMethodInvestmentSold_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_NumberOfYearsOverWhichRemainingOwnershipInterestInEquityMethodInvestmentWillBeSold" xlink:label="NumberOfYearsOverWhichRemainingOwnershipInterestInEquityMethodInvestmentWillBeSold" xlink:title="NumberOfYearsOverWhichRemainingOwnershipInterestInEquityMethodInvestmentWillBeSold"/>
    <link:label xlink:type="resource" xlink:label="mdu_NumberOfYearsOverWhichRemainingOwnershipInterestInEquityMethodInvestmentWillBeSold_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_NumberOfYearsOverWhichRemainingOwnershipInterestInEquityMethodInvestmentWillBeSold_lbl" xml:lang="en-US" id="mdu_NumberOfYearsOverWhichRemainingOwnershipInterestInEquityMethodInvestmentWillBeSold_lbl">Number of years over which remaining ownership interest in equity method investment will be sold</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfYearsOverWhichRemainingOwnershipInterestInEquityMethodInvestmentWillBeSold" xlink:to="mdu_NumberOfYearsOverWhichRemainingOwnershipInterestInEquityMethodInvestmentWillBeSold_lbl" xlink:title="label: NumberOfYearsOverWhichRemainingOwnershipInterestInEquityMethodInvestmentWillBeSold to mdu_NumberOfYearsOverWhichRemainingOwnershipInterestInEquityMethodInvestmentWillBeSold_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_NumberOfYearsOverWhichRemainingOwnershipInterestInEquityMethodInvestmentWillBeSold_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_NumberOfYearsOverWhichRemainingOwnershipInterestInEquityMethodInvestmentWillBeSold_lbl1" xml:lang="en-US" id="mdu_NumberOfYearsOverWhichRemainingOwnershipInterestInEquityMethodInvestmentWillBeSold_lbl1">The number of years over which the company's remaining ownership interest in ECTE will be sold.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfYearsOverWhichRemainingOwnershipInterestInEquityMethodInvestmentWillBeSold" xlink:to="mdu_NumberOfYearsOverWhichRemainingOwnershipInterestInEquityMethodInvestmentWillBeSold_lbl1" xlink:title="label: NumberOfYearsOverWhichRemainingOwnershipInterestInEquityMethodInvestmentWillBeSold to mdu_NumberOfYearsOverWhichRemainingOwnershipInterestInEquityMethodInvestmentWillBeSold_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_NumberOfYearsOverWhichRemainingOwnershipInterestInEquityMethodInvestmentWillBeSold_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_NumberOfYearsOverWhichRemainingOwnershipInterestInEquityMethodInvestmentWillBeSold_lbl2" xml:lang="en-US" id="mdu_NumberOfYearsOverWhichRemainingOwnershipInterestInEquityMethodInvestmentWillBeSold_lbl2">Number of years over which remaining ownership interest in ECTE will be sold (in years)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfYearsOverWhichRemainingOwnershipInterestInEquityMethodInvestmentWillBeSold" xlink:to="mdu_NumberOfYearsOverWhichRemainingOwnershipInterestInEquityMethodInvestmentWillBeSold_lbl2" xlink:title="label: NumberOfYearsOverWhichRemainingOwnershipInterestInEquityMethodInvestmentWillBeSold to mdu_NumberOfYearsOverWhichRemainingOwnershipInterestInEquityMethodInvestmentWillBeSold_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_NumberOfSeparatePartiesWithWhichCompanyEnteredIntoAgreementsToSellEquityOwnershipInterests" xlink:label="NumberOfSeparatePartiesWithWhichCompanyEnteredIntoAgreementsToSellEquityOwnershipInterests" xlink:title="NumberOfSeparatePartiesWithWhichCompanyEnteredIntoAgreementsToSellEquityOwnershipInterests"/>
    <link:label xlink:type="resource" xlink:label="mdu_NumberOfSeparatePartiesWithWhichCompanyEnteredIntoAgreementsToSellEquityOwnershipInterests_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_NumberOfSeparatePartiesWithWhichCompanyEnteredIntoAgreementsToSellEquityOwnershipInterests_lbl" xml:lang="en-US" id="mdu_NumberOfSeparatePartiesWithWhichCompanyEnteredIntoAgreementsToSellEquityOwnershipInterests_lbl">Number of separate parties with which company entered into agreements to sell equity ownership interests</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfSeparatePartiesWithWhichCompanyEnteredIntoAgreementsToSellEquityOwnershipInterests" xlink:to="mdu_NumberOfSeparatePartiesWithWhichCompanyEnteredIntoAgreementsToSellEquityOwnershipInterests_lbl" xlink:title="label: NumberOfSeparatePartiesWithWhichCompanyEnteredIntoAgreementsToSellEquityOwnershipInterests to mdu_NumberOfSeparatePartiesWithWhichCompanyEnteredIntoAgreementsToSellEquityOwnershipInterests_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_NumberOfSeparatePartiesWithWhichCompanyEnteredIntoAgreementsToSellEquityOwnershipInterests_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_NumberOfSeparatePartiesWithWhichCompanyEnteredIntoAgreementsToSellEquityOwnershipInterests_lbl1" xml:lang="en-US" id="mdu_NumberOfSeparatePartiesWithWhichCompanyEnteredIntoAgreementsToSellEquityOwnershipInterests_lbl1">The number of separate parties with which the company entered into agreements to sell equity ownership interests.</link:label>
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    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_MoneyMarketFundsFairValueDisclosure" xlink:label="MoneyMarketFundsFairValueDisclosure" xlink:title="MoneyMarketFundsFairValueDisclosure"/>
    <link:label xlink:type="resource" xlink:label="mdu_MoneyMarketFundsFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_MoneyMarketFundsFairValueDisclosure_lbl" xml:lang="en-US" id="mdu_MoneyMarketFundsFairValueDisclosure_lbl">Money market funds fair value disclosure</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MoneyMarketFundsFairValueDisclosure" xlink:to="mdu_MoneyMarketFundsFairValueDisclosure_lbl" xlink:title="label: MoneyMarketFundsFairValueDisclosure to mdu_MoneyMarketFundsFairValueDisclosure_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_MoneyMarketFundsFairValueDisclosure_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_MoneyMarketFundsFairValueDisclosure_lbl1" xml:lang="en-US" id="mdu_MoneyMarketFundsFairValueDisclosure_lbl1">Represents the portion of the balance sheet assertion valued at fair value by the entity in connection with the fair value disclosures required in the footnotes to the financial statements. This item represents investments in short-term money-market instruments which are highly liquid and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates.</link:label>
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    <link:label xlink:type="resource" xlink:label="mdu_FixedIncomeSecuritiesFairValueDisclosure_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_FixedIncomeSecuritiesFairValueDisclosure_lbl1" xml:lang="en-US" id="mdu_FixedIncomeSecuritiesFairValueDisclosure_lbl1">Represents the portion of the balance sheet assertion valued at fair value by the entity in connection with the fair value disclosures required in the footnotes to the financial statements. This item represents available-for-sale debt securities that provide a return in the form of fixed periodic payments and eventual return of principal at maturity.</link:label>
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    <link:label xlink:type="resource" xlink:label="mdu_EquitySecuritiesFairValueDisclosure_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_EquitySecuritiesFairValueDisclosure_lbl1" xml:lang="en-US" id="mdu_EquitySecuritiesFairValueDisclosure_lbl1">Represents the portion of the balance sheet assertion valued at fair value by the entity in connection with the fair value disclosures required in the footnotes to the financial statements. This item represents available-for-sale equity securities. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt.</link:label>
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    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_InsuranceInvestmentContractFairValueDisclosure" xlink:label="InsuranceInvestmentContractFairValueDisclosure" xlink:title="InsuranceInvestmentContractFairValueDisclosure"/>
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    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_PercentageInvestmentInCommonStockOfMidCapCompanies" xlink:label="PercentageInvestmentInCommonStockOfMidCapCompanies" xlink:title="PercentageInvestmentInCommonStockOfMidCapCompanies"/>
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    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_InsuranceInvestmentContractInvestmentPercentagesAbstract" xlink:label="InsuranceInvestmentContractInvestmentPercentagesAbstract" xlink:title="InsuranceInvestmentContractInvestmentPercentagesAbstract"/>
    <link:label xlink:type="resource" xlink:label="mdu_InsuranceInvestmentContractInvestmentPercentagesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_InsuranceInvestmentContractInvestmentPercentagesAbstract_lbl" xml:lang="en-US" id="mdu_InsuranceInvestmentContractInvestmentPercentagesAbstract_lbl">Insurance investment contract investment percentages [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InsuranceInvestmentContractInvestmentPercentagesAbstract" xlink:to="mdu_InsuranceInvestmentContractInvestmentPercentagesAbstract_lbl" xlink:title="label: InsuranceInvestmentContractInvestmentPercentagesAbstract to mdu_InsuranceInvestmentContractInvestmentPercentagesAbstract_lbl"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_MaximumNumberOfYearsFromDateOfSaleAgreementThatPaymentIsGuaranteed" xlink:label="MaximumNumberOfYearsFromDateOfSaleAgreementThatPaymentIsGuaranteed" xlink:title="MaximumNumberOfYearsFromDateOfSaleAgreementThatPaymentIsGuaranteed"/>
    <link:label xlink:type="resource" xlink:label="mdu_MaximumNumberOfYearsFromDateOfSaleAgreementThatPaymentIsGuaranteed_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_MaximumNumberOfYearsFromDateOfSaleAgreementThatPaymentIsGuaranteed_lbl" xml:lang="en-US" id="mdu_MaximumNumberOfYearsFromDateOfSaleAgreementThatPaymentIsGuaranteed_lbl">Maximum number of years from the date of sale agreement that payment is guaranteed</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MaximumNumberOfYearsFromDateOfSaleAgreementThatPaymentIsGuaranteed" xlink:to="mdu_MaximumNumberOfYearsFromDateOfSaleAgreementThatPaymentIsGuaranteed_lbl" xlink:title="label: MaximumNumberOfYearsFromDateOfSaleAgreementThatPaymentIsGuaranteed to mdu_MaximumNumberOfYearsFromDateOfSaleAgreementThatPaymentIsGuaranteed_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_MaximumNumberOfYearsFromDateOfSaleAgreementThatPaymentIsGuaranteed_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_MaximumNumberOfYearsFromDateOfSaleAgreementThatPaymentIsGuaranteed_lbl1" xml:lang="en-US" id="mdu_MaximumNumberOfYearsFromDateOfSaleAgreementThatPaymentIsGuaranteed_lbl1">Maximum number of years from the date of sale agreement that payment in is guaranteed (in years)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MaximumNumberOfYearsFromDateOfSaleAgreementThatPaymentIsGuaranteed" xlink:to="mdu_MaximumNumberOfYearsFromDateOfSaleAgreementThatPaymentIsGuaranteed_lbl1" xlink:title="label: MaximumNumberOfYearsFromDateOfSaleAgreementThatPaymentIsGuaranteed to mdu_MaximumNumberOfYearsFromDateOfSaleAgreementThatPaymentIsGuaranteed_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_MaximumNumberOfYearsFromDateOfSaleAgreementThatPaymentIsGuaranteed_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_MaximumNumberOfYearsFromDateOfSaleAgreementThatPaymentIsGuaranteed_lbl2" xml:lang="en-US" id="mdu_MaximumNumberOfYearsFromDateOfSaleAgreementThatPaymentIsGuaranteed_lbl2">Maximum number of years from the date of sale agreement that payment is guaranteed (in years)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MaximumNumberOfYearsFromDateOfSaleAgreementThatPaymentIsGuaranteed" xlink:to="mdu_MaximumNumberOfYearsFromDateOfSaleAgreementThatPaymentIsGuaranteed_lbl2" xlink:title="label: MaximumNumberOfYearsFromDateOfSaleAgreementThatPaymentIsGuaranteed to mdu_MaximumNumberOfYearsFromDateOfSaleAgreementThatPaymentIsGuaranteed_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_TotalElectricRateIncreaseRequested" xlink:label="TotalElectricRateIncreaseRequested" xlink:title="TotalElectricRateIncreaseRequested"/>
    <link:label xlink:type="resource" xlink:label="mdu_TotalElectricRateIncreaseRequested_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_TotalElectricRateIncreaseRequested_lbl" xml:lang="en-US" id="mdu_TotalElectricRateIncreaseRequested_lbl">Total electric rate increase requested</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TotalElectricRateIncreaseRequested" xlink:to="mdu_TotalElectricRateIncreaseRequested_lbl" xlink:title="label: TotalElectricRateIncreaseRequested to mdu_TotalElectricRateIncreaseRequested_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_TotalElectricRateIncreaseRequested_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_TotalElectricRateIncreaseRequested_lbl1" xml:lang="en-US" id="mdu_TotalElectricRateIncreaseRequested_lbl1">The total amount of the annual increase in electric rate requested by Montana-Dakota.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TotalElectricRateIncreaseRequested" xlink:to="mdu_TotalElectricRateIncreaseRequested_lbl1" xlink:title="label: TotalElectricRateIncreaseRequested to mdu_TotalElectricRateIncreaseRequested_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_PercentAboveCurrentRatesRequested" xlink:label="PercentAboveCurrentRatesRequested" xlink:title="PercentAboveCurrentRatesRequested"/>
    <link:label xlink:type="resource" xlink:label="mdu_PercentAboveCurrentRatesRequested_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_PercentAboveCurrentRatesRequested_lbl" xml:lang="en-US" id="mdu_PercentAboveCurrentRatesRequested_lbl">Percent above current rates requested</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentAboveCurrentRatesRequested" xlink:to="mdu_PercentAboveCurrentRatesRequested_lbl" xlink:title="label: PercentAboveCurrentRatesRequested to mdu_PercentAboveCurrentRatesRequested_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_PercentAboveCurrentRatesRequested_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_PercentAboveCurrentRatesRequested_lbl1" xml:lang="en-US" id="mdu_PercentAboveCurrentRatesRequested_lbl1">The percentage of the annual increase in electric rate over current rates requested by Montana-Dakota.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentAboveCurrentRatesRequested" xlink:to="mdu_PercentAboveCurrentRatesRequested_lbl1" xlink:title="label: PercentAboveCurrentRatesRequested to mdu_PercentAboveCurrentRatesRequested_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_PercentAboveCurrentRatesRequested_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_PercentAboveCurrentRatesRequested_lbl2" xml:lang="en-US" id="mdu_PercentAboveCurrentRatesRequested_lbl2">Percent above current rates requested (in hundredths)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentAboveCurrentRatesRequested" xlink:to="mdu_PercentAboveCurrentRatesRequested_lbl2" xlink:title="label: PercentAboveCurrentRatesRequested to mdu_PercentAboveCurrentRatesRequested_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_AmountOfApprovedInterimIncreaseInAnnualElectricRates" xlink:label="AmountOfApprovedInterimIncreaseInAnnualElectricRates" xlink:title="AmountOfApprovedInterimIncreaseInAnnualElectricRates"/>
    <link:label xlink:type="resource" xlink:label="mdu_AmountOfApprovedInterimIncreaseInAnnualElectricRates_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_AmountOfApprovedInterimIncreaseInAnnualElectricRates_lbl" xml:lang="en-US" id="mdu_AmountOfApprovedInterimIncreaseInAnnualElectricRates_lbl">Amount of approved interim increase in annual electric rates</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmountOfApprovedInterimIncreaseInAnnualElectricRates" xlink:to="mdu_AmountOfApprovedInterimIncreaseInAnnualElectricRates_lbl" xlink:title="label: AmountOfApprovedInterimIncreaseInAnnualElectricRates to mdu_AmountOfApprovedInterimIncreaseInAnnualElectricRates_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_AmountOfApprovedInterimIncreaseInAnnualElectricRates_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_AmountOfApprovedInterimIncreaseInAnnualElectricRates_lbl1" xml:lang="en-US" id="mdu_AmountOfApprovedInterimIncreaseInAnnualElectricRates_lbl1">The amount of the approved interim increase in annual electric rates</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmountOfApprovedInterimIncreaseInAnnualElectricRates" xlink:to="mdu_AmountOfApprovedInterimIncreaseInAnnualElectricRates_lbl1" xlink:title="label: AmountOfApprovedInterimIncreaseInAnnualElectricRates to mdu_AmountOfApprovedInterimIncreaseInAnnualElectricRates_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_RevisedTotalAnnualElectricRateIncreaseRequested" xlink:label="RevisedTotalAnnualElectricRateIncreaseRequested" xlink:title="RevisedTotalAnnualElectricRateIncreaseRequested"/>
    <link:label xlink:type="resource" xlink:label="mdu_RevisedTotalAnnualElectricRateIncreaseRequested_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_RevisedTotalAnnualElectricRateIncreaseRequested_lbl" xml:lang="en-US" id="mdu_RevisedTotalAnnualElectricRateIncreaseRequested_lbl">Revised total annual electric rate increase requested</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevisedTotalAnnualElectricRateIncreaseRequested" xlink:to="mdu_RevisedTotalAnnualElectricRateIncreaseRequested_lbl" xlink:title="label: RevisedTotalAnnualElectricRateIncreaseRequested to mdu_RevisedTotalAnnualElectricRateIncreaseRequested_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_RevisedTotalAnnualElectricRateIncreaseRequested_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_RevisedTotalAnnualElectricRateIncreaseRequested_lbl1" xml:lang="en-US" id="mdu_RevisedTotalAnnualElectricRateIncreaseRequested_lbl1">The total amount of the revised annual increase in electric rate requested by Montana-Dakota.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevisedTotalAnnualElectricRateIncreaseRequested" xlink:to="mdu_RevisedTotalAnnualElectricRateIncreaseRequested_lbl1" xlink:title="label: RevisedTotalAnnualElectricRateIncreaseRequested to mdu_RevisedTotalAnnualElectricRateIncreaseRequested_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_ApprovedPercentageOfInterimIncrease" xlink:label="RevisedPercentageIncreaseRequested" xlink:title="RevisedPercentageIncreaseRequested"/>
    <link:label xlink:type="resource" xlink:label="mdu_RevisedPercentageIncreaseRequested_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_RevisedPercentageIncreaseRequested_lbl" xml:lang="en-US" id="mdu_RevisedPercentageIncreaseRequested_lbl">Approved percentage of interim increase</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevisedPercentageIncreaseRequested" xlink:to="mdu_RevisedPercentageIncreaseRequested_lbl" xlink:title="label: RevisedPercentageIncreaseRequested to mdu_RevisedPercentageIncreaseRequested_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_RevisedPercentageIncreaseRequested_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_RevisedPercentageIncreaseRequested_lbl1" xml:lang="en-US" id="mdu_RevisedPercentageIncreaseRequested_lbl1">Approved percentage of rate increase over current rates to cover costs</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevisedPercentageIncreaseRequested" xlink:to="mdu_RevisedPercentageIncreaseRequested_lbl1" xlink:title="label: RevisedPercentageIncreaseRequested to mdu_RevisedPercentageIncreaseRequested_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_RevisedPercentageIncreaseRequested_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_RevisedPercentageIncreaseRequested_lbl2" xml:lang="en-US" id="mdu_RevisedPercentageIncreaseRequested_lbl2">Revised percentage of increase requested (in hundredths)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevisedPercentageIncreaseRequested" xlink:to="mdu_RevisedPercentageIncreaseRequested_lbl2" xlink:title="label: RevisedPercentageIncreaseRequested to mdu_RevisedPercentageIncreaseRequested_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_ReductionsInRateIncreaseSoughtByRegulatoryAgency" xlink:label="ReductionsInRateIncreaseSoughtByRegulatoryAgency" xlink:title="ReductionsInRateIncreaseSoughtByRegulatoryAgency"/>
    <link:label xlink:type="resource" xlink:label="mdu_ReductionsInRateIncreaseSoughtByRegulatoryAgency_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_ReductionsInRateIncreaseSoughtByRegulatoryAgency_lbl" xml:lang="en-US" id="mdu_ReductionsInRateIncreaseSoughtByRegulatoryAgency_lbl">Reductions in rate increase sought by regulatory agency</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ReductionsInRateIncreaseSoughtByRegulatoryAgency" xlink:to="mdu_ReductionsInRateIncreaseSoughtByRegulatoryAgency_lbl" xlink:title="label: ReductionsInRateIncreaseSoughtByRegulatoryAgency to mdu_ReductionsInRateIncreaseSoughtByRegulatoryAgency_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_ReductionsInRateIncreaseSoughtByRegulatoryAgency_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_ReductionsInRateIncreaseSoughtByRegulatoryAgency_lbl1" xml:lang="en-US" id="mdu_ReductionsInRateIncreaseSoughtByRegulatoryAgency_lbl1">The reductions in the amount of the rate increase sought by NDPSC Advocacy Staff.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ReductionsInRateIncreaseSoughtByRegulatoryAgency" xlink:to="mdu_ReductionsInRateIncreaseSoughtByRegulatoryAgency_lbl1" xlink:title="label: ReductionsInRateIncreaseSoughtByRegulatoryAgency to mdu_ReductionsInRateIncreaseSoughtByRegulatoryAgency_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_AmountOfTotalRateIncreaseIncludedInSettlementAgreement" xlink:label="AmountOfTotalRateIncreaseIncludedInSettlementAgreement" xlink:title="AmountOfTotalRateIncreaseIncludedInSettlementAgreement"/>
    <link:label xlink:type="resource" xlink:label="mdu_AmountOfTotalRateIncreaseIncludedInSettlementAgreement_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_AmountOfTotalRateIncreaseIncludedInSettlementAgreement_lbl" xml:lang="en-US" id="mdu_AmountOfTotalRateIncreaseIncludedInSettlementAgreement_lbl">Amount of total rate increase included in settlement agreement</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmountOfTotalRateIncreaseIncludedInSettlementAgreement" xlink:to="mdu_AmountOfTotalRateIncreaseIncludedInSettlementAgreement_lbl" xlink:title="label: AmountOfTotalRateIncreaseIncludedInSettlementAgreement to mdu_AmountOfTotalRateIncreaseIncludedInSettlementAgreement_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_AmountOfTotalRateIncreaseIncludedInSettlementAgreement_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_AmountOfTotalRateIncreaseIncludedInSettlementAgreement_lbl1" xml:lang="en-US" id="mdu_AmountOfTotalRateIncreaseIncludedInSettlementAgreement_lbl1">The amount of the total rate increase included in the settlement agreement filed by the NDPSC Advocacy Staff and the Missouri Valley Resource Council on March 14, 2011.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmountOfTotalRateIncreaseIncludedInSettlementAgreement" xlink:to="mdu_AmountOfTotalRateIncreaseIncludedInSettlementAgreement_lbl1" xlink:title="label: AmountOfTotalRateIncreaseIncludedInSettlementAgreement to mdu_AmountOfTotalRateIncreaseIncludedInSettlementAgreement_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_TotalAmountOfRequestedInterimElectricRateIncrease" xlink:label="TotalAmountOfRequestedInterimElectricRateIncrease" xlink:title="TotalAmountOfRequestedInterimElectricRateIncrease"/>
    <link:label xlink:type="resource" xlink:label="mdu_TotalAmountOfRequestedInterimElectricRateIncrease_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_TotalAmountOfRequestedInterimElectricRateIncrease_lbl" xml:lang="en-US" id="mdu_TotalAmountOfRequestedInterimElectricRateIncrease_lbl">Total amount of requested interim electric rate increase</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TotalAmountOfRequestedInterimElectricRateIncrease" xlink:to="mdu_TotalAmountOfRequestedInterimElectricRateIncrease_lbl" xlink:title="label: TotalAmountOfRequestedInterimElectricRateIncrease to mdu_TotalAmountOfRequestedInterimElectricRateIncrease_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_TotalAmountOfRequestedInterimElectricRateIncrease_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_TotalAmountOfRequestedInterimElectricRateIncrease_lbl1" xml:lang="en-US" id="mdu_TotalAmountOfRequestedInterimElectricRateIncrease_lbl1">The total amount of the requested interim electric rate increase.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TotalAmountOfRequestedInterimElectricRateIncrease" xlink:to="mdu_TotalAmountOfRequestedInterimElectricRateIncrease_lbl1" xlink:title="label: TotalAmountOfRequestedInterimElectricRateIncrease to mdu_TotalAmountOfRequestedInterimElectricRateIncrease_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_PercentageOfInterimElectricRateIncreaseRequested" xlink:label="PercentageOfInterimElectricRateIncreaseRequested" xlink:title="PercentageOfInterimElectricRateIncreaseRequested"/>
    <link:label xlink:type="resource" xlink:label="mdu_PercentageOfInterimElectricRateIncreaseRequested_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_PercentageOfInterimElectricRateIncreaseRequested_lbl" xml:lang="en-US" id="mdu_PercentageOfInterimElectricRateIncreaseRequested_lbl">Percentage of interim electric rate increase requested</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOfInterimElectricRateIncreaseRequested" xlink:to="mdu_PercentageOfInterimElectricRateIncreaseRequested_lbl" xlink:title="label: PercentageOfInterimElectricRateIncreaseRequested to mdu_PercentageOfInterimElectricRateIncreaseRequested_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_PercentageOfInterimElectricRateIncreaseRequested_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_PercentageOfInterimElectricRateIncreaseRequested_lbl1" xml:lang="en-US" id="mdu_PercentageOfInterimElectricRateIncreaseRequested_lbl1">The percentage of requested increase in interim electric rates over the current rates.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOfInterimElectricRateIncreaseRequested" xlink:to="mdu_PercentageOfInterimElectricRateIncreaseRequested_lbl1" xlink:title="label: PercentageOfInterimElectricRateIncreaseRequested to mdu_PercentageOfInterimElectricRateIncreaseRequested_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_PercentageOfInterimElectricRateIncreaseRequested_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_PercentageOfInterimElectricRateIncreaseRequested_lbl2" xml:lang="en-US" id="mdu_PercentageOfInterimElectricRateIncreaseRequested_lbl2">Percentage of interim electric rate increase requested (in hundredths)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PercentageOfInterimElectricRateIncreaseRequested" xlink:to="mdu_PercentageOfInterimElectricRateIncreaseRequested_lbl2" xlink:title="label: PercentageOfInterimElectricRateIncreaseRequested to mdu_PercentageOfInterimElectricRateIncreaseRequested_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_ApprovedPercentageOfInterimElectricRateIncrease" xlink:label="ApprovedPercentageOfInterimElectricRateIncrease" xlink:title="ApprovedPercentageOfInterimElectricRateIncrease"/>
    <link:label xlink:type="resource" xlink:label="mdu_ApprovedPercentageOfInterimElectricRateIncrease_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_ApprovedPercentageOfInterimElectricRateIncrease_lbl" xml:lang="en-US" id="mdu_ApprovedPercentageOfInterimElectricRateIncrease_lbl">Approved percentage of interim electric rate increase</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ApprovedPercentageOfInterimElectricRateIncrease" xlink:to="mdu_ApprovedPercentageOfInterimElectricRateIncrease_lbl" xlink:title="label: ApprovedPercentageOfInterimElectricRateIncrease to mdu_ApprovedPercentageOfInterimElectricRateIncrease_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_ApprovedPercentageOfInterimElectricRateIncrease_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_ApprovedPercentageOfInterimElectricRateIncrease_lbl1" xml:lang="en-US" id="mdu_ApprovedPercentageOfInterimElectricRateIncrease_lbl1">The approved percentage of interim electric rate increase.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ApprovedPercentageOfInterimElectricRateIncrease" xlink:to="mdu_ApprovedPercentageOfInterimElectricRateIncrease_lbl1" xlink:title="label: ApprovedPercentageOfInterimElectricRateIncrease to mdu_ApprovedPercentageOfInterimElectricRateIncrease_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_ApprovedPercentageOfInterimElectricRateIncrease_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="mdu_ApprovedPercentageOfInterimElectricRateIncrease_lbl2" xml:lang="en-US" id="mdu_ApprovedPercentageOfInterimElectricRateIncrease_lbl2">Approved percentage of interim electric rate increase (in hundredths)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ApprovedPercentageOfInterimElectricRateIncrease" xlink:to="mdu_ApprovedPercentageOfInterimElectricRateIncrease_lbl2" xlink:title="label: ApprovedPercentageOfInterimElectricRateIncrease to mdu_ApprovedPercentageOfInterimElectricRateIncrease_lbl2"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_AmountOfIndemnifiableLossesSoughtUnderIndemnificationAgreement" xlink:label="AmountOfCompensatoryDamagesSoughtUnderIndemnificationAgreement" xlink:title="AmountOfCompensatoryDamagesSoughtUnderIndemnificationAgreement"/>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmountOfCompensatoryDamagesSoughtUnderIndemnificationAgreement" xlink:to="mdu_lab_AmountOfIndemnifiableLossesSoughtUnderIndemnificationAgreement2" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_NumberOfAllegedPipelineSafetyRegulationViolations" xlink:label="NumberOfAllegedPipelineSafetyRegulationViolations" xlink:title="NumberOfAllegedPipelineSafetyRegulationViolations"/>
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    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_AmountOfAdditionalGuaranteesOutstandingReflectedOnBalanceSheetOfRelatedParty" xlink:label="AmountOfAdditionalGuaranteesOutstandingReflectedOnBalanceSheetOfRelatedParty" xlink:title="AmountOfAdditionalGuaranteesOutstandingReflectedOnBalanceSheetOfRelatedParty"/>
    <link:label xlink:type="resource" xlink:label="mdu_AmountOfAdditionalGuaranteesOutstandingReflectedOnBalanceSheetOfRelatedParty_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_AmountOfAdditionalGuaranteesOutstandingReflectedOnBalanceSheetOfRelatedParty_lbl" xml:lang="en-US" id="mdu_AmountOfAdditionalGuaranteesOutstandingReflectedOnBalanceSheetOfRelatedParty_lbl">Amount Of Additional Guarantees Outstanding Reflected On Balance Sheet Of Related Party</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmountOfAdditionalGuaranteesOutstandingReflectedOnBalanceSheetOfRelatedParty" xlink:to="mdu_AmountOfAdditionalGuaranteesOutstandingReflectedOnBalanceSheetOfRelatedParty_lbl" xlink:title="label: AmountOfAdditionalGuaranteesOutstandingReflectedOnBalanceSheetOfRelatedParty to mdu_AmountOfAdditionalGuaranteesOutstandingReflectedOnBalanceSheetOfRelatedParty_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_AmountOfAdditionalGuaranteesOutstandingReflectedOnBalanceSheetOfRelatedParty_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_AmountOfAdditionalGuaranteesOutstandingReflectedOnBalanceSheetOfRelatedParty_lbl1" xml:lang="en-US" id="mdu_AmountOfAdditionalGuaranteesOutstandingReflectedOnBalanceSheetOfRelatedParty_lbl1">The amount of hedging obligations outstanding reflected on the balance sheet of Fidelity and guaranteed by WBI Holdings.</link:label>
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    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_LettersOfCreditSetToExpireIn2011" xlink:label="LettersOfCreditSetToExpireIn2011" xlink:title="LettersOfCreditSetToExpireIn2011"/>
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    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_LettersOfCreditSetToExpireIn2012" xlink:label="LettersOfCreditSetToExpireIn2012" xlink:title="LettersOfCreditSetToExpireIn2012"/>
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    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_NaturalGasInStorageNoncurrent" xlink:label="NaturalGasInStorageNoncurrent" xlink:title="NaturalGasInStorageNoncurrent"/>
    <link:label xlink:type="resource" xlink:label="mdu_NaturalGasInStorageNoncurrent_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_NaturalGasInStorageNoncurrent_lbl1" xml:lang="en-US" id="mdu_NaturalGasInStorageNoncurrent_lbl1">Natural Gas In Storage Noncurrent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NaturalGasInStorageNoncurrent" xlink:to="mdu_NaturalGasInStorageNoncurrent_lbl1" xlink:title="label: NaturalGasInStorageNoncurrent to mdu_NaturalGasInStorageNoncurrent_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_NaturalGasInStorageNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_NaturalGasInStorageNoncurrent_lbl" xml:lang="en-US" id="mdu_NaturalGasInStorageNoncurrent_lbl">Carrying amount as of the balance sheet date of natural gas in storage, which largely represents the cost of gas required to maintain pressure levels for normal operating purposes, and deemed to be noncurrent asset.</link:label>
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    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_UndistributedEarningsOfEquityMethodInvestments" xlink:label="UndistributedEarningsOfEquityMethodInvestments" xlink:title="UndistributedEarningsOfEquityMethodInvestments"/>
    <link:label xlink:type="resource" xlink:label="mdu_UndistributedEarningsOfEquityMethodInvestments_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_UndistributedEarningsOfEquityMethodInvestments_lbl1" xml:lang="en-US" id="mdu_UndistributedEarningsOfEquityMethodInvestments_lbl1">Undistributed earnings of equity method investments</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UndistributedEarningsOfEquityMethodInvestments" xlink:to="mdu_UndistributedEarningsOfEquityMethodInvestments_lbl1" xlink:title="label: UndistributedEarningsOfEquityMethodInvestments to mdu_UndistributedEarningsOfEquityMethodInvestments_lbl1"/>
    <link:label xlink:type="resource" xlink:label="mdu_UndistributedEarningsOfEquityMethodInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_UndistributedEarningsOfEquityMethodInvestments_lbl" xml:lang="en-US" id="mdu_UndistributedEarningsOfEquityMethodInvestments_lbl">General comment: What about entire interest in ENTE and ERTE being sold? Let discuss.</link:label>
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    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_IncomeTaxBenefitFromContinuingOperations" xlink:label="IncomeTaxBenefitFromContinuingOperations" xlink:title="IncomeTaxBenefitFromContinuingOperations"/>
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    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_InterestRelatedToReversalOfUnrecognizedTaxBenefitsPreviouslyEstablishedFor2004Through2006TaxYears" xlink:label="InterestRelatedToReversalOfUnrecognizedTaxBenefitsPreviouslyEstablishedFor2004Through2006TaxYears" xlink:title="InterestRelatedToReversalOfUnrecognizedTaxBenefitsPreviouslyEstablishedFor2004Through2006TaxYears"/>
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    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_PotentialLiabilitiesRelatedToLitigationAndEnvironmentalMatters" xlink:label="PotentialLiabilitiesRelatedToLitigationAndEnvironmentalMatters" xlink:title="PotentialLiabilitiesRelatedToLitigationAndEnvironmentalMatters"/>
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    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_SiteContingencyLossExposureNotAccruedAndLowEstimate" xlink:label="SiteContingencyLossExposureNotAccruedAndLowEstimate" xlink:title="SiteContingencyLossExposureNotAccruedAndLowEstimate"/>
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    <link:label xlink:type="resource" xlink:label="mdu_CommodityDerivativeLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_CommodityDerivativeLiabilitiesCurrent_lbl" xml:lang="en-US" id="mdu_CommodityDerivativeLiabilitiesCurrent_lbl">Fair values as of the balance sheet date for all assets resulting from commodity contracts that meet the criteria of being accounted for as derivative instruments and which are expected to be converted into cash or otherwise disposed of within a year or the normal operating cycle, if longer.</link:label>
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    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_BrazilianTransmissionLinesMember" xlink:label="BrazilianTransmissionLinesMember" xlink:title="BrazilianTransmissionLinesMember"/>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BrazilianTransmissionLinesMember" xlink:to="mdu_BrazilianTransmissionLinesMember_lbl" xlink:title="label: BrazilianTransmissionLinesMember to mdu_BrazilianTransmissionLinesMember_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_BrazilianTransmissionLinesMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_BrazilianTransmissionLinesMember_lbl1" xml:lang="en-US" id="mdu_BrazilianTransmissionLinesMember_lbl1">Equity method investment with electric transmission lines located primarily in northeastern and southern Brazil.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BrazilianTransmissionLinesMember" xlink:to="mdu_BrazilianTransmissionLinesMember_lbl1" xlink:title="label: BrazilianTransmissionLinesMember to mdu_BrazilianTransmissionLinesMember_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_EcteMember" xlink:label="EcteMember" xlink:title="EcteMember"/>
    <link:label xlink:type="resource" xlink:label="mdu_EcteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_EcteMember_lbl" xml:lang="en-US" id="mdu_EcteMember_lbl">ECTE [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EcteMember" xlink:to="mdu_EcteMember_lbl" xlink:title="label: EcteMember to mdu_EcteMember_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_EcteMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_EcteMember_lbl1" xml:lang="en-US" id="mdu_EcteMember_lbl1">Empresa Catarinense de Transmissao de Energia S.A.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EcteMember" xlink:to="mdu_EcteMember_lbl1" xlink:title="label: EcteMember to mdu_EcteMember_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_NaturalGasDistributionMember" xlink:label="NaturalGasDistributionMember" xlink:title="NaturalGasDistributionMember"/>
    <link:label xlink:type="resource" xlink:label="mdu_NaturalGasDistributionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_NaturalGasDistributionMember_lbl" xml:lang="en-US" id="mdu_NaturalGasDistributionMember_lbl">Natural gas distribution [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NaturalGasDistributionMember" xlink:to="mdu_NaturalGasDistributionMember_lbl" xlink:title="label: NaturalGasDistributionMember to mdu_NaturalGasDistributionMember_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_NaturalGasDistributionMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_NaturalGasDistributionMember_lbl1" xml:lang="en-US" id="mdu_NaturalGasDistributionMember_lbl1">This segment distributes natural gas in Montana, North Dakota, South Dakota, Wyoming, Idaho, Minnesota, Oregon and Washington. These operations also supply related value-added services.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NaturalGasDistributionMember" xlink:to="mdu_NaturalGasDistributionMember_lbl1" xlink:title="label: NaturalGasDistributionMember to mdu_NaturalGasDistributionMember_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_ElectricMember" xlink:label="ElectricMember" xlink:title="ElectricMember"/>
    <link:label xlink:type="resource" xlink:label="mdu_ElectricMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_ElectricMember_lbl" xml:lang="en-US" id="mdu_ElectricMember_lbl">Electric [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ElectricMember" xlink:to="mdu_ElectricMember_lbl" xlink:title="label: ElectricMember to mdu_ElectricMember_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_ElectricMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_ElectricMember_lbl1" xml:lang="en-US" id="mdu_ElectricMember_lbl1">This segment generates, transmits and distributes electricity in Montana, North Dakota, South Dakota and Wyoming. These opeartions also supply related value-added services.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ElectricMember" xlink:to="mdu_ElectricMember_lbl1" xlink:title="label: ElectricMember to mdu_ElectricMember_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_PipelineAndEnergyServicesMember" xlink:label="PipelineAndEnergyServicesMember" xlink:title="PipelineAndEnergyServicesMember"/>
    <link:label xlink:type="resource" xlink:label="mdu_PipelineAndEnergyServicesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_PipelineAndEnergyServicesMember_lbl" xml:lang="en-US" id="mdu_PipelineAndEnergyServicesMember_lbl">Pipeline and energy services [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PipelineAndEnergyServicesMember" xlink:to="mdu_PipelineAndEnergyServicesMember_lbl" xlink:title="label: PipelineAndEnergyServicesMember to mdu_PipelineAndEnergyServicesMember_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_PipelineAndEnergyServicesMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_PipelineAndEnergyServicesMember_lbl1" xml:lang="en-US" id="mdu_PipelineAndEnergyServicesMember_lbl1">This segment provides natural gas transportation, underground storage and gathering services through regulated and nonregulated pipeline systems primarily in the Rocky Mountain and northern Great Plains regions of the United States. This segment also provides cathodic protection and other energy-related services.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PipelineAndEnergyServicesMember" xlink:to="mdu_PipelineAndEnergyServicesMember_lbl1" xlink:title="label: PipelineAndEnergyServicesMember to mdu_PipelineAndEnergyServicesMember_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_ConstructionServicesMember" xlink:label="ConstructionServicesMember" xlink:title="ConstructionServicesMember"/>
    <link:label xlink:type="resource" xlink:label="mdu_ConstructionServicesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_ConstructionServicesMember_lbl" xml:lang="en-US" id="mdu_ConstructionServicesMember_lbl">Construction services [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConstructionServicesMember" xlink:to="mdu_ConstructionServicesMember_lbl" xlink:title="label: ConstructionServicesMember to mdu_ConstructionServicesMember_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_ConstructionServicesMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_ConstructionServicesMember_lbl1" xml:lang="en-US" id="mdu_ConstructionServicesMember_lbl1">This segment specializes in constructing and maintaining electric and communication lines, gas pipelines, fire suppression systems, and external lighting and traffic signalization equipment. This segment also provides utility excavation services and inside electrical wiring, cabling and mechanical services, sells and distributes electrical materials, and manufactures and distributes specialty equipment.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConstructionServicesMember" xlink:to="mdu_ConstructionServicesMember_lbl1" xlink:title="label: ConstructionServicesMember to mdu_ConstructionServicesMember_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_ConstructionMaterialsAndContractingMember" xlink:label="ConstructionMaterialsAndContractingMember" xlink:title="ConstructionMaterialsAndContractingMember"/>
    <link:label xlink:type="resource" xlink:label="mdu_ConstructionMaterialsAndContractingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_ConstructionMaterialsAndContractingMember_lbl" xml:lang="en-US" id="mdu_ConstructionMaterialsAndContractingMember_lbl">Construction materials and contracting [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConstructionMaterialsAndContractingMember" xlink:to="mdu_ConstructionMaterialsAndContractingMember_lbl" xlink:title="label: ConstructionMaterialsAndContractingMember to mdu_ConstructionMaterialsAndContractingMember_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_ConstructionMaterialsAndContractingMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_ConstructionMaterialsAndContractingMember_lbl1" xml:lang="en-US" id="mdu_ConstructionMaterialsAndContractingMember_lbl1">This segment mines aggregates and markets crushed stone, sand, gravel and related construction materials, including ready-mixed concrete, cement, asphalt, liquid asphalt and other value-added products. It also performs integrated contracting services. This segment operates in the central, southern and western United States and Alaska and Hawaii.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConstructionMaterialsAndContractingMember" xlink:to="mdu_ConstructionMaterialsAndContractingMember_lbl1" xlink:title="label: ConstructionMaterialsAndContractingMember to mdu_ConstructionMaterialsAndContractingMember_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_NaturalGasAndOilProductionMember" xlink:label="NaturalGasAndOilProductionMember" xlink:title="NaturalGasAndOilProductionMember"/>
    <link:label xlink:type="resource" xlink:label="mdu_NaturalGasAndOilProductionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_NaturalGasAndOilProductionMember_lbl" xml:lang="en-US" id="mdu_NaturalGasAndOilProductionMember_lbl">Natural gas and oil production [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NaturalGasAndOilProductionMember" xlink:to="mdu_NaturalGasAndOilProductionMember_lbl" xlink:title="label: NaturalGasAndOilProductionMember to mdu_NaturalGasAndOilProductionMember_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_NaturalGasAndOilProductionMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_NaturalGasAndOilProductionMember_lbl1" xml:lang="en-US" id="mdu_NaturalGasAndOilProductionMember_lbl1">This segment is engaged in natural gas and oil acquisition, exploration, development and production activities in the Rocky Mountain and Mid-Continent regions of the United States and in and around the Gulf of Mexico.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NaturalGasAndOilProductionMember" xlink:to="mdu_NaturalGasAndOilProductionMember_lbl1" xlink:title="label: NaturalGasAndOilProductionMember to mdu_NaturalGasAndOilProductionMember_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_CommodityDerivativeInstrumentsMember" xlink:label="CommodityDerivativeInstrumentsMember" xlink:title="CommodityDerivativeInstrumentsMember"/>
    <link:label xlink:type="resource" xlink:label="mdu_CommodityDerivativeInstrumentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_CommodityDerivativeInstrumentsMember_lbl" xml:lang="en-US" id="mdu_CommodityDerivativeInstrumentsMember_lbl">Commodity derivative instruments [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommodityDerivativeInstrumentsMember" xlink:to="mdu_CommodityDerivativeInstrumentsMember_lbl" xlink:title="label: CommodityDerivativeInstrumentsMember to mdu_CommodityDerivativeInstrumentsMember_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_CommodityDerivativeInstrumentsMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_CommodityDerivativeInstrumentsMember_lbl1" xml:lang="en-US" id="mdu_CommodityDerivativeInstrumentsMember_lbl1">Information recorded in commodity derivative instruments.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CommodityDerivativeInstrumentsMember" xlink:to="mdu_CommodityDerivativeInstrumentsMember_lbl1" xlink:title="label: CommodityDerivativeInstrumentsMember to mdu_CommodityDerivativeInstrumentsMember_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_NdpscMember" xlink:label="NdpscMember" xlink:title="NdpscMember"/>
    <link:label xlink:type="resource" xlink:label="mdu_NdpscMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_NdpscMember_lbl" xml:lang="en-US" id="mdu_NdpscMember_lbl">NDPSC [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NdpscMember" xlink:to="mdu_NdpscMember_lbl" xlink:title="label: NdpscMember to mdu_NdpscMember_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_NdpscMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_NdpscMember_lbl1" xml:lang="en-US" id="mdu_NdpscMember_lbl1">North Dakota Public Service Commission</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NdpscMember" xlink:to="mdu_NdpscMember_lbl1" xlink:title="label: NdpscMember to mdu_NdpscMember_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_MtpscMember" xlink:label="MtpscMember" xlink:title="MtpscMember"/>
    <link:label xlink:type="resource" xlink:label="mdu_MtpscMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_MtpscMember_lbl" xml:lang="en-US" id="mdu_MtpscMember_lbl">MTPSC [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MtpscMember" xlink:to="mdu_MtpscMember_lbl" xlink:title="label: MtpscMember to mdu_MtpscMember_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_MtpscMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_MtpscMember_lbl1" xml:lang="en-US" id="mdu_MtpscMember_lbl1">Montana Public Service Commission</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MtpscMember" xlink:to="mdu_MtpscMember_lbl1" xlink:title="label: MtpscMember to mdu_MtpscMember_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_RegulatedOperationsScheduleOfRegulatoryMattersTable" xlink:label="RegulatedOperationsScheduleOfRegulatoryMattersTable" xlink:title="RegulatedOperationsScheduleOfRegulatoryMattersTable"/>
    <link:label xlink:type="resource" xlink:label="mdu_RegulatedOperationsScheduleOfRegulatoryMattersTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_RegulatedOperationsScheduleOfRegulatoryMattersTable_lbl" xml:lang="en-US" id="mdu_RegulatedOperationsScheduleOfRegulatoryMattersTable_lbl">Regulated Operations, Schedule of Regulatory Matters [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RegulatedOperationsScheduleOfRegulatoryMattersTable" xlink:to="mdu_RegulatedOperationsScheduleOfRegulatoryMattersTable_lbl" xlink:title="label: RegulatedOperationsScheduleOfRegulatoryMattersTable to mdu_RegulatedOperationsScheduleOfRegulatoryMattersTable_lbl"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_RegulatedOperationsRegulatoryMatterByRegulatoryAgencyAxis" xlink:label="RegulatedOperationsRegulatoryMatterByRegulatoryAgencyAxis" xlink:title="RegulatedOperationsRegulatoryMatterByRegulatoryAgencyAxis"/>
    <link:label xlink:type="resource" xlink:label="mdu_RegulatedOperationsRegulatoryMatterByRegulatoryAgencyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_RegulatedOperationsRegulatoryMatterByRegulatoryAgencyAxis_lbl" xml:lang="en-US" id="mdu_RegulatedOperationsRegulatoryMatterByRegulatoryAgencyAxis_lbl">Regulated Operations, Regulatory Matter, by Regulatory Agency [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RegulatedOperationsRegulatoryMatterByRegulatoryAgencyAxis" xlink:to="mdu_RegulatedOperationsRegulatoryMatterByRegulatoryAgencyAxis_lbl" xlink:title="label: RegulatedOperationsRegulatoryMatterByRegulatoryAgencyAxis to mdu_RegulatedOperationsRegulatoryMatterByRegulatoryAgencyAxis_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_RegulatedOperationsRegulatoryMatterByRegulatoryAgencyAxis_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_RegulatedOperationsRegulatoryMatterByRegulatoryAgencyAxis_lbl1" xml:lang="en-US" id="mdu_RegulatedOperationsRegulatoryMatterByRegulatoryAgencyAxis_lbl1">Rate increase information by the regulatory body that oversees these requests.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RegulatedOperationsRegulatoryMatterByRegulatoryAgencyAxis" xlink:to="mdu_RegulatedOperationsRegulatoryMatterByRegulatoryAgencyAxis_lbl1" xlink:title="label: RegulatedOperationsRegulatoryMatterByRegulatoryAgencyAxis to mdu_RegulatedOperationsRegulatoryMatterByRegulatoryAgencyAxis_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_RegulatoryAgencyDomain" xlink:label="RegulatoryAgencyDomain" xlink:title="RegulatoryAgencyDomain"/>
    <link:label xlink:type="resource" xlink:label="mdu_RegulatoryAgencyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_RegulatoryAgencyDomain_lbl" xml:lang="en-US" id="mdu_RegulatoryAgencyDomain_lbl">Regulatory Agency [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RegulatoryAgencyDomain" xlink:to="mdu_RegulatoryAgencyDomain_lbl" xlink:title="label: RegulatoryAgencyDomain to mdu_RegulatoryAgencyDomain_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_RegulatoryAgencyDomain_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_RegulatoryAgencyDomain_lbl1" xml:lang="en-US" id="mdu_RegulatoryAgencyDomain_lbl1">The regulatory agency that oversees the regulatory matter.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RegulatoryAgencyDomain" xlink:to="mdu_RegulatoryAgencyDomain_lbl1" xlink:title="label: RegulatoryAgencyDomain to mdu_RegulatoryAgencyDomain_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_RegulatedOperationsScheduleOfRegulatoryMattersLineItems" xlink:label="RegulatedOperationsScheduleOfRegulatoryMattersLineItems" xlink:title="RegulatedOperationsScheduleOfRegulatoryMattersLineItems"/>
    <link:label xlink:type="resource" xlink:label="mdu_RegulatedOperationsScheduleOfRegulatoryMattersLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_RegulatedOperationsScheduleOfRegulatoryMattersLineItems_lbl" xml:lang="en-US" id="mdu_RegulatedOperationsScheduleOfRegulatoryMattersLineItems_lbl">Regulated Operations, Schedule of Regulatory Matters [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RegulatedOperationsScheduleOfRegulatoryMattersLineItems" xlink:to="mdu_RegulatedOperationsScheduleOfRegulatoryMattersLineItems_lbl" xlink:title="label: RegulatedOperationsScheduleOfRegulatoryMattersLineItems to mdu_RegulatedOperationsScheduleOfRegulatoryMattersLineItems_lbl"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_NaturalGasGatheringOperationsMember" xlink:label="NaturalGasGatheringOperationsMember" xlink:title="NaturalGasGatheringOperationsMember"/>
    <link:label xlink:type="resource" xlink:label="mdu_NaturalGasGatheringOperationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_NaturalGasGatheringOperationsMember_lbl" xml:lang="en-US" id="mdu_NaturalGasGatheringOperationsMember_lbl">Natural gas gathering operations [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NaturalGasGatheringOperationsMember" xlink:to="mdu_NaturalGasGatheringOperationsMember_lbl" xlink:title="label: NaturalGasGatheringOperationsMember to mdu_NaturalGasGatheringOperationsMember_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_NaturalGasGatheringOperationsMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_NaturalGasGatheringOperationsMember_lbl1" xml:lang="en-US" id="mdu_NaturalGasGatheringOperationsMember_lbl1">Natural gas gathering operations obligations</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NaturalGasGatheringOperationsMember" xlink:to="mdu_NaturalGasGatheringOperationsMember_lbl1" xlink:title="label: NaturalGasGatheringOperationsMember to mdu_NaturalGasGatheringOperationsMember_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_GuaranteeObligationUnderConstructionContractMember" xlink:label="GuaranteeObligationUnderConstructionContractMember" xlink:title="GuaranteeObligationUnderConstructionContractMember"/>
    <link:label xlink:type="resource" xlink:label="mdu_GuaranteeObligationUnderConstructionContractMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_GuaranteeObligationUnderConstructionContractMember_lbl" xml:lang="en-US" id="mdu_GuaranteeObligationUnderConstructionContractMember_lbl">Guarantee obligation under construction contract [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GuaranteeObligationUnderConstructionContractMember" xlink:to="mdu_GuaranteeObligationUnderConstructionContractMember_lbl" xlink:title="label: GuaranteeObligationUnderConstructionContractMember to mdu_GuaranteeObligationUnderConstructionContractMember_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_GuaranteeObligationUnderConstructionContractMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_GuaranteeObligationUnderConstructionContractMember_lbl1" xml:lang="en-US" id="mdu_GuaranteeObligationUnderConstructionContractMember_lbl1">Guarantee obligation under a construction contract.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="GuaranteeObligationUnderConstructionContractMember" xlink:to="mdu_GuaranteeObligationUnderConstructionContractMember_lbl1" xlink:title="label: GuaranteeObligationUnderConstructionContractMember to mdu_GuaranteeObligationUnderConstructionContractMember_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_LitigationRelatedToConstructionMaterialsMember" xlink:label="LitigationRelatedToConstructionMaterialsMember" xlink:title="LitigationRelatedToConstructionMaterialsMember"/>
    <link:label xlink:type="resource" xlink:label="mdu_LitigationRelatedToConstructionMaterialsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_LitigationRelatedToConstructionMaterialsMember_lbl" xml:lang="en-US" id="mdu_LitigationRelatedToConstructionMaterialsMember_lbl">Litigation related to construction materials [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LitigationRelatedToConstructionMaterialsMember" xlink:to="mdu_LitigationRelatedToConstructionMaterialsMember_lbl" xlink:title="label: LitigationRelatedToConstructionMaterialsMember to mdu_LitigationRelatedToConstructionMaterialsMember_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_LitigationRelatedToConstructionMaterialsMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_LitigationRelatedToConstructionMaterialsMember_lbl1" xml:lang="en-US" id="mdu_LitigationRelatedToConstructionMaterialsMember_lbl1">Litigation related to natural gas distribution</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LitigationRelatedToConstructionMaterialsMember" xlink:to="mdu_LitigationRelatedToConstructionMaterialsMember_lbl1" xlink:title="label: LitigationRelatedToConstructionMaterialsMember to mdu_LitigationRelatedToConstructionMaterialsMember_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_NaturalGasDistrbutionMember" xlink:label="NaturalGasDistrbutionIssuesMember" xlink:title="NaturalGasDistrbutionIssuesMember"/>
    <link:label xlink:type="resource" xlink:label="mdu_NaturalGasDistrbutionIssuesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="mdu_NaturalGasDistrbutionIssuesMember_lbl" xml:lang="en-US" id="mdu_NaturalGasDistrbutionIssuesMember_lbl">Natural gas distribution [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NaturalGasDistrbutionIssuesMember" xlink:to="mdu_NaturalGasDistrbutionIssuesMember_lbl" xlink:title="label: NaturalGasDistrbutionIssuesMember to mdu_NaturalGasDistrbutionIssuesMember_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_NaturalGasDistrbutionIssuesMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_NaturalGasDistrbutionIssuesMember_lbl1" xml:lang="en-US" id="mdu_NaturalGasDistrbutionIssuesMember_lbl1">Litigation related to natural gas distribution operations.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NaturalGasDistrbutionIssuesMember" xlink:to="mdu_NaturalGasDistrbutionIssuesMember_lbl1" xlink:title="label: NaturalGasDistrbutionIssuesMember to mdu_NaturalGasDistrbutionIssuesMember_lbl1"/>
    <link:label xlink:type="resource" xlink:label="label_NaturalGasDistrbutionMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NaturalGasDistrbutionMember" xml:lang="en-US" id="label_NaturalGasDistrbutionMember">Natural Gas Distrbution [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NaturalGasDistrbutionIssuesMember" xlink:to="label_NaturalGasDistrbutionMember" xlink:title="label: NaturalGasDistrbutionMember to label_NaturalGasDistrbutionMember"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_LossContingenciesByIndividualLitigationAxis" xlink:label="LossContingenciesByIndividualLitigationAxis" xlink:title="LossContingenciesByIndividualLitigationAxis"/>
    <link:label xlink:type="resource" xlink:label="mdu_LossContingenciesByIndividualLitigationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_LossContingenciesByIndividualLitigationAxis_lbl" xml:lang="en-US" id="mdu_LossContingenciesByIndividualLitigationAxis_lbl">Loss Contingencies by Individual Litigation [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LossContingenciesByIndividualLitigationAxis" xlink:to="mdu_LossContingenciesByIndividualLitigationAxis_lbl" xlink:title="label: LossContingenciesByIndividualLitigationAxis to mdu_LossContingenciesByIndividualLitigationAxis_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_LossContingenciesByIndividualLitigationAxis_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_LossContingenciesByIndividualLitigationAxis_lbl1" xml:lang="en-US" id="mdu_LossContingenciesByIndividualLitigationAxis_lbl1">Loss contingencies by the case.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LossContingenciesByIndividualLitigationAxis" xlink:to="mdu_LossContingenciesByIndividualLitigationAxis_lbl1" xlink:title="label: LossContingenciesByIndividualLitigationAxis to mdu_LossContingenciesByIndividualLitigationAxis_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_LitigationDomain" xlink:label="LitigationDomain" xlink:title="LitigationDomain"/>
    <link:label xlink:type="resource" xlink:label="mdu_LitigationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_LitigationDomain_lbl" xml:lang="en-US" id="mdu_LitigationDomain_lbl">Litigation [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LitigationDomain" xlink:to="mdu_LitigationDomain_lbl" xlink:title="label: LitigationDomain to mdu_LitigationDomain_lbl"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_EnvironmentalLitigationNumber1Member" xlink:label="EnvironmentalLitigationNumber1Member" xlink:title="EnvironmentalLitigationNumber1Member"/>
    <link:label xlink:type="resource" xlink:label="mdu_EnvironmentalLitigationNumber1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_EnvironmentalLitigationNumber1Member_lbl" xml:lang="en-US" id="mdu_EnvironmentalLitigationNumber1Member_lbl">Environmental Litigation Number 1 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EnvironmentalLitigationNumber1Member" xlink:to="mdu_EnvironmentalLitigationNumber1Member_lbl" xlink:title="label: EnvironmentalLitigationNumber1Member to mdu_EnvironmentalLitigationNumber1Member_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_EnvironmentalLitigationNumber1Member_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_EnvironmentalLitigationNumber1Member_lbl1" xml:lang="en-US" id="mdu_EnvironmentalLitigationNumber1Member_lbl1">Claim #1 - Soil and groundwater contamination at a manufactured gas plant site in Oregon received in 1995.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EnvironmentalLitigationNumber1Member" xlink:to="mdu_EnvironmentalLitigationNumber1Member_lbl1" xlink:title="label: EnvironmentalLitigationNumber1Member to mdu_EnvironmentalLitigationNumber1Member_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_EnvironmentalLitigationNumber2Member" xlink:label="EnvironmentalLitigationNumber2Member" xlink:title="EnvironmentalLitigationNumber2Member"/>
    <link:label xlink:type="resource" xlink:label="mdu_EnvironmentalLitigationNumber2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_EnvironmentalLitigationNumber2Member_lbl" xml:lang="en-US" id="mdu_EnvironmentalLitigationNumber2Member_lbl">Environmental Litigation Number 2 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EnvironmentalLitigationNumber2Member" xlink:to="mdu_EnvironmentalLitigationNumber2Member_lbl" xlink:title="label: EnvironmentalLitigationNumber2Member to mdu_EnvironmentalLitigationNumber2Member_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_EnvironmentalLitigationNumber2Member_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_EnvironmentalLitigationNumber2Member_lbl1" xml:lang="en-US" id="mdu_EnvironmentalLitigationNumber2Member_lbl1">Claim #2 - Contamination at a manufactured gas plant site in Washington received in 1997.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EnvironmentalLitigationNumber2Member" xlink:to="mdu_EnvironmentalLitigationNumber2Member_lbl1" xlink:title="label: EnvironmentalLitigationNumber2Member to mdu_EnvironmentalLitigationNumber2Member_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_EnvironmentalLitigationNumber3Member" xlink:label="EnvironmentalLitigationNumber3Member" xlink:title="EnvironmentalLitigationNumber3Member"/>
    <link:label xlink:type="resource" xlink:label="mdu_EnvironmentalLitigationNumber3Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_EnvironmentalLitigationNumber3Member_lbl" xml:lang="en-US" id="mdu_EnvironmentalLitigationNumber3Member_lbl">Environmental Litigation Number 3 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EnvironmentalLitigationNumber3Member" xlink:to="mdu_EnvironmentalLitigationNumber3Member_lbl" xlink:title="label: EnvironmentalLitigationNumber3Member to mdu_EnvironmentalLitigationNumber3Member_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_EnvironmentalLitigationNumber3Member_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_EnvironmentalLitigationNumber3Member_lbl1" xml:lang="en-US" id="mdu_EnvironmentalLitigationNumber3Member_lbl1">Claim #3 - Contamination at a manufactured gas plant site in Washington owned from 1946-1962 and received in 2008.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EnvironmentalLitigationNumber3Member" xlink:to="mdu_EnvironmentalLitigationNumber3Member_lbl1" xlink:title="label: EnvironmentalLitigationNumber3Member to mdu_EnvironmentalLitigationNumber3Member_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_PortlandHarborSiteMember" xlink:label="PortlandHarborSiteIssuesMember" xlink:title="PortlandHarborSiteIssuesMember"/>
    <link:label xlink:type="resource" xlink:label="mdu_PortlandHarborSiteIssuesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="mdu_PortlandHarborSiteIssuesMember_lbl" xml:lang="en-US" id="mdu_PortlandHarborSiteIssuesMember_lbl">Portland Harbor Site [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PortlandHarborSiteIssuesMember" xlink:to="mdu_PortlandHarborSiteIssuesMember_lbl" xlink:title="label: PortlandHarborSiteIssuesMember to mdu_PortlandHarborSiteIssuesMember_lbl"/>
    <link:label xlink:type="resource" xlink:label="mdu_PortlandHarborSiteIssuesMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="mdu_PortlandHarborSiteIssuesMember_lbl1" xml:lang="en-US" id="mdu_PortlandHarborSiteIssuesMember_lbl1">Information related to the Portland Harbor site clean-up.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PortlandHarborSiteIssuesMember" xlink:to="mdu_PortlandHarborSiteIssuesMember_lbl1" xlink:title="label: PortlandHarborSiteIssuesMember to mdu_PortlandHarborSiteIssuesMember_lbl1"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DerivativeInstrumentsGainRecognizedInIncome" xlink:label="DerivativeInstrumentsGainRecognizedInIncome" xlink:title="DerivativeInstrumentsGainRecognizedInIncome"/>
    <link:label xlink:type="resource" xlink:label="label_DerivativeInstrumentsGainRecognizedInIncome" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DerivativeInstrumentsGainRecognizedInIncome" xml:lang="en-US" id="label_DerivativeInstrumentsGainRecognizedInIncome">Derivative Instruments Gain Recognized In Income</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DerivativeInstrumentsGainRecognizedInIncome" xlink:to="label_DerivativeInstrumentsGainRecognizedInIncome" xlink:title="label: DerivativeInstrumentsGainRecognizedInIncome to label_DerivativeInstrumentsGainRecognizedInIncome"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_lab_DerivativeInstrumentsGainRecognizedInIncome2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xml:lang="en-US" id="lab_us-gaap_DerivativeInstrumentsGainRecognizedInIncome_label_en-US2">Gain on the derivative instrument that did not qualify for hedge accounting reported in operating revenues</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DerivativeInstrumentsGainRecognizedInIncome" xlink:to="us-gaap_lab_DerivativeInstrumentsGainRecognizedInIncome2" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_UnrecognizedTaxBenefits" xlink:label="UnrecognizedTaxBenefits" xlink:title="UnrecognizedTaxBenefits"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_lab_UnrecognizedTaxBenefits2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xml:lang="en-US" id="lab_us-gaap_UnrecognizedTaxBenefits_label_en-US2">Unrecognized tax positions largely due to tax positions under examination relating to the 2007 through 2009 tax years.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UnrecognizedTaxBenefits" xlink:to="us-gaap_lab_UnrecognizedTaxBenefits2" order="1.0"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_lab_UnrecognizedTaxBenefits3" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US" id="lab_us-gaap_UnrecognizedTaxBenefits_label_en-US3">Unrecognized tax positions largely due to tax positions under examination relating to the 2007 through 2009 tax years</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UnrecognizedTaxBenefits" xlink:to="us-gaap_lab_UnrecognizedTaxBenefits3" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease" xlink:label="UnrecognizedTaxBenefitsPeriodIncreaseDecrease" xlink:title="UnrecognizedTaxBenefitsPeriodIncreaseDecrease"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_lab_UnrecognizedTaxBenefitsPeriodIncreaseDecrease2" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US" id="lab_us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease_label_en-US2">Unrecognized Tax Positions, Increase (Decrease)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UnrecognizedTaxBenefitsPeriodIncreaseDecrease" xlink:to="us-gaap_lab_UnrecognizedTaxBenefitsPeriodIncreaseDecrease2" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments" xlink:label="DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments" xlink:title="DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_lab_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments2" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US" id="lab_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments_label_en-US2">Curtailment Loss</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments" xlink:to="us-gaap_lab_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments2" order="1.0"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_lab_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments3" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xml:lang="en-US" id="lab_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments_label_en-US3">Curtailment Loss</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments" xlink:to="us-gaap_lab_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments3" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_FixedMaximumAmountsGuaranteedByYear2015" xlink:label="FixedMaximumAmountsGuaranteedByYear2015" xlink:title="FixedMaximumAmountsGuaranteedByYear2015"/>
    <link:label xlink:type="resource" xlink:label="label_FixedMaximumAmountsGuaranteedByYear2015" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FixedMaximumAmountsGuaranteedByYear2015" xml:lang="en-US" id="label_FixedMaximumAmountsGuaranteedByYear2015">Fixed Maximum Amounts Guaranteed By Year 2015</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FixedMaximumAmountsGuaranteedByYear2015" xlink:to="label_FixedMaximumAmountsGuaranteedByYear2015" xlink:title="label: FixedMaximumAmountsGuaranteedByYear2015 to label_FixedMaximumAmountsGuaranteedByYear2015"/>
    <link:label xlink:type="resource" xlink:label="label_FixedMaximumAmountsGuaranteedByYear2015_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_FixedMaximumAmountsGuaranteedByYear2015" xml:lang="en-US" id="label_FixedMaximumAmountsGuaranteedByYear2015_2">Fixed maximum amounts guaranteed for 2015.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FixedMaximumAmountsGuaranteedByYear2015" xlink:to="label_FixedMaximumAmountsGuaranteedByYear2015_2" xlink:title="label: FixedMaximumAmountsGuaranteedByYear2015 to label_FixedMaximumAmountsGuaranteedByYear2015"/>
    <link:label xlink:type="resource" xlink:label="label_FixedMaximumAmountsGuaranteedByYear2015_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FixedMaximumAmountsGuaranteedByYear2015" xml:lang="en-US" id="label_FixedMaximumAmountsGuaranteedByYear2015_3">2015</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FixedMaximumAmountsGuaranteedByYear2015" xlink:to="label_FixedMaximumAmountsGuaranteedByYear2015_3" xlink:title="label: FixedMaximumAmountsGuaranteedByYear2015 to label_FixedMaximumAmountsGuaranteedByYear2015"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_FixedMaximumAmountsGuaranteedByYear2016" xlink:label="FixedMaximumAmountsGuaranteedByYear2016" xlink:title="FixedMaximumAmountsGuaranteedByYear2016"/>
    <link:label xlink:type="resource" xlink:label="label_FixedMaximumAmountsGuaranteedByYear2016" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_FixedMaximumAmountsGuaranteedByYear2016" xml:lang="en-US" id="label_FixedMaximumAmountsGuaranteedByYear2016">Fixed Maximum Amounts Guaranteed By Year 2016</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FixedMaximumAmountsGuaranteedByYear2016" xlink:to="label_FixedMaximumAmountsGuaranteedByYear2016" xlink:title="label: FixedMaximumAmountsGuaranteedByYear2016 to label_FixedMaximumAmountsGuaranteedByYear2016"/>
    <link:label xlink:type="resource" xlink:label="label_FixedMaximumAmountsGuaranteedByYear2016_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_FixedMaximumAmountsGuaranteedByYear2016" xml:lang="en-US" id="label_FixedMaximumAmountsGuaranteedByYear2016_2">Fixed maximum amounts guaranteed for 2016.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FixedMaximumAmountsGuaranteedByYear2016" xlink:to="label_FixedMaximumAmountsGuaranteedByYear2016_2" xlink:title="label: FixedMaximumAmountsGuaranteedByYear2016 to label_FixedMaximumAmountsGuaranteedByYear2016"/>
    <link:label xlink:type="resource" xlink:label="label_FixedMaximumAmountsGuaranteedByYear2016_3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_FixedMaximumAmountsGuaranteedByYear2016" xml:lang="en-US" id="label_FixedMaximumAmountsGuaranteedByYear2016_3">2016</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FixedMaximumAmountsGuaranteedByYear2016" xlink:to="label_FixedMaximumAmountsGuaranteedByYear2016_3" xlink:title="label: FixedMaximumAmountsGuaranteedByYear2016 to label_FixedMaximumAmountsGuaranteedByYear2016"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_NumberOfMegaWattsOfCombinedCycleElectricGeneratingFacility" xlink:label="NumberOfMegaWattsOfCombinedCycleElectricGeneratingFacility" xlink:title="NumberOfMegaWattsOfCombinedCycleElectricGeneratingFacility"/>
    <link:label xlink:type="resource" xlink:label="label_NumberOfMegaWattsOfCombinedCycleElectricGeneratingFacility" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NumberOfMegaWattsOfCombinedCycleElectricGeneratingFacility" xml:lang="en-US" id="label_NumberOfMegaWattsOfCombinedCycleElectricGeneratingFacility">Number Of Mega Watts Of Combined Cycle Electric Generating Facility</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfMegaWattsOfCombinedCycleElectricGeneratingFacility" xlink:to="label_NumberOfMegaWattsOfCombinedCycleElectricGeneratingFacility" xlink:title="label: NumberOfMegaWattsOfCombinedCycleElectricGeneratingFacility to label_NumberOfMegaWattsOfCombinedCycleElectricGeneratingFacility"/>
    <link:label xlink:type="resource" xlink:label="label_NumberOfMegaWattsOfCombinedCycleElectricGeneratingFacility_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NumberOfMegaWattsOfCombinedCycleElectricGeneratingFacility" xml:lang="en-US" id="label_NumberOfMegaWattsOfCombinedCycleElectricGeneratingFacility_2">number of Mega-watts of combined-cycle electric generating facility near Hobbs, New Mexico (in number of mega-watts)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfMegaWattsOfCombinedCycleElectricGeneratingFacility" xlink:to="label_NumberOfMegaWattsOfCombinedCycleElectricGeneratingFacility_2" xlink:title="label: NumberOfMegaWattsOfCombinedCycleElectricGeneratingFacility to label_NumberOfMegaWattsOfCombinedCycleElectricGeneratingFacility"/>
    <link:label xlink:type="resource" xlink:label="label_NumberOfMegaWattsOfCombinedCycleElectricGeneratingFacility_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_NumberOfMegaWattsOfCombinedCycleElectricGeneratingFacility" xml:lang="en-US" id="label_NumberOfMegaWattsOfCombinedCycleElectricGeneratingFacility_3">The number of mega-watts of a combined cycle electric generating facility near Hobbs, New Mexico</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfMegaWattsOfCombinedCycleElectricGeneratingFacility" xlink:to="label_NumberOfMegaWattsOfCombinedCycleElectricGeneratingFacility_3" xlink:title="label: NumberOfMegaWattsOfCombinedCycleElectricGeneratingFacility to label_NumberOfMegaWattsOfCombinedCycleElectricGeneratingFacility"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_AmountOutstandingUnderGuaranteesThatIsReflectedOnBalanceSheet" xlink:label="AmountOutstandingUnderGuaranteesThatisReflectedOnBalanceSheet" xlink:title="AmountOutstandingUnderGuaranteesThatisReflectedOnBalanceSheet"/>
    <link:label xlink:type="resource" xlink:label="label_AmountOutstandingUnderGuaranteesThatisReflectedOnBalanceSheet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AmountOutstandingUnderGuaranteesThatisReflectedOnBalanceSheet" xml:lang="en-US" id="label_AmountOutstandingUnderGuaranteesThatisReflectedOnBalanceSheet">Amount Outstanding Under Guarantees That Is Reflected On Balance Sheet</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmountOutstandingUnderGuaranteesThatisReflectedOnBalanceSheet" xlink:to="label_AmountOutstandingUnderGuaranteesThatisReflectedOnBalanceSheet" xlink:title="label: AmountOutstandingUnderGuaranteesThatisReflectedOnBalanceSheet to label_AmountOutstandingUnderGuaranteesThatisReflectedOnBalanceSheet"/>
    <link:label xlink:type="resource" xlink:label="label_AmountOutstandingUnderGuaranteesThatIsReflectedOnBalanceSheet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AmountOutstandingUnderGuaranteesThatIsReflectedOnBalanceSheet" xml:lang="en-US" id="label_AmountOutstandingUnderGuaranteesThatIsReflectedOnBalanceSheet">Amount outstanding under gurantees that is reflected on the balance sheet</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmountOutstandingUnderGuaranteesThatisReflectedOnBalanceSheet" xlink:to="label_AmountOutstandingUnderGuaranteesThatIsReflectedOnBalanceSheet" xlink:title="label: AmountOutstandingUnderGuaranteesThatIsReflectedOnBalanceSheet to label_AmountOutstandingUnderGuaranteesThatIsReflectedOnBalanceSheet"/>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmountOutstandingUnderGuaranteesThatisReflectedOnBalanceSheet" xlink:to="label_AmountOutstandingUnderGuaranteesThatIsReflectedOnBalanceSheet_2" xlink:title="label: AmountOutstandingUnderGuaranteesThatIsReflectedOnBalanceSheet to label_AmountOutstandingUnderGuaranteesThatIsReflectedOnBalanceSheet"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SiteContingencyLossExposureNotAccruedLowEstimate" xlink:label="SiteContingencyLossExposureNotAccruedLowEstimate" xlink:title="SiteContingencyLossExposureNotAccruedLowEstimate"/>
    <link:label xlink:type="resource" xlink:label="label_SiteContingencyLossExposureNotAccruedLowEstimate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SiteContingencyLossExposureNotAccruedLowEstimate" xml:lang="en-US" id="label_SiteContingencyLossExposureNotAccruedLowEstimate">Site Contingency, Loss Exposure Not Accrued, Low Estimate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SiteContingencyLossExposureNotAccruedLowEstimate" xlink:to="label_SiteContingencyLossExposureNotAccruedLowEstimate" xlink:title="label: SiteContingencyLossExposureNotAccruedLowEstimate to label_SiteContingencyLossExposureNotAccruedLowEstimate"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_SiteContingencyLossExposureNotAccruedHighEstimate" xlink:label="SiteContingencyLossExposureNotAccruedHighEstimate" xlink:title="SiteContingencyLossExposureNotAccruedHighEstimate"/>
    <link:label xlink:type="resource" xlink:label="label_SiteContingencyLossExposureNotAccruedHighEstimate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SiteContingencyLossExposureNotAccruedHighEstimate" xml:lang="en-US" id="label_SiteContingencyLossExposureNotAccruedHighEstimate">Site Contingency, Loss Exposure Not Accrued, High Estimate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SiteContingencyLossExposureNotAccruedHighEstimate" xlink:to="label_SiteContingencyLossExposureNotAccruedHighEstimate" xlink:title="label: SiteContingencyLossExposureNotAccruedHighEstimate to label_SiteContingencyLossExposureNotAccruedHighEstimate"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_SiteContingencyLossExposureLowEstimate" xlink:label="SiteContingencyLossExposureLowEstimate" xlink:title="SiteContingencyLossExposureLowEstimate"/>
    <link:label xlink:type="resource" xlink:label="label_SiteContingencyLossExposureLowEstimate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SiteContingencyLossExposureLowEstimate" xml:lang="en-US" id="label_SiteContingencyLossExposureLowEstimate">Site Contingency, Loss Exposure, Low Estimate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SiteContingencyLossExposureLowEstimate" xlink:to="label_SiteContingencyLossExposureLowEstimate" xlink:title="label: SiteContingencyLossExposureLowEstimate to label_SiteContingencyLossExposureLowEstimate"/>
    <link:label xlink:type="resource" xlink:label="label_SiteContingencyLossExposureLowEstimate_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_SiteContingencyLossExposureLowEstimate" xml:lang="en-US" id="label_SiteContingencyLossExposureLowEstimate_2">Low-end of the range estimate of the loss exposure for reasonably possible environmental contingencies at an individual site.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SiteContingencyLossExposureLowEstimate" xlink:to="label_SiteContingencyLossExposureLowEstimate_2" xlink:title="label: SiteContingencyLossExposureLowEstimate to label_SiteContingencyLossExposureLowEstimate"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_SiteContingencyLossExposureHighEstimate" xlink:label="SiteContingencyLossExposureHighEstimate" xlink:title="SiteContingencyLossExposureHighEstimate"/>
    <link:label xlink:type="resource" xlink:label="label_SiteContingencyLossExposureHighEstimate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SiteContingencyLossExposureHighEstimate" xml:lang="en-US" id="label_SiteContingencyLossExposureHighEstimate">Site Contingency, Loss Exposure, High Estimate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SiteContingencyLossExposureHighEstimate" xlink:to="label_SiteContingencyLossExposureHighEstimate" xlink:title="label: SiteContingencyLossExposureHighEstimate to label_SiteContingencyLossExposureHighEstimate"/>
    <link:label xlink:type="resource" xlink:label="label_SiteContingencyLossExposureHighEstimate_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_SiteContingencyLossExposureHighEstimate" xml:lang="en-US" id="label_SiteContingencyLossExposureHighEstimate_2">High-end of the range estimate of the loss exposure for reasonably possible environmental contingencies at an individual site.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SiteContingencyLossExposureHighEstimate" xlink:to="label_SiteContingencyLossExposureHighEstimate_2" xlink:title="label: SiteContingencyLossExposureHighEstimate to label_SiteContingencyLossExposureHighEstimate"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_NumberOfMwOfSimpleCycleNaturalGasTurbine" xlink:label="NumberOfMwOfSimpleCycleNaturalGasTurbine" xlink:title="NumberOfMwOfSimpleCycleNaturalGasTurbine"/>
    <link:label xlink:type="resource" xlink:label="label_NumberOfMwOfSimpleCycleNaturalGasTurbine" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_NumberOfMwOfSimpleCycleNaturalGasTurbine" xml:lang="en-US" id="label_NumberOfMwOfSimpleCycleNaturalGasTurbine">The number of MW of a simple cycle natural gas turbine</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfMwOfSimpleCycleNaturalGasTurbine" xlink:to="label_NumberOfMwOfSimpleCycleNaturalGasTurbine" xlink:title="label: NumberOfMwOfSimpleCycleNaturalGasTurbine to label_NumberOfMwOfSimpleCycleNaturalGasTurbine"/>
    <link:label xlink:type="resource" xlink:label="label_NumberOfMwOfSimpleCycleNaturalGasTurbine_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_NumberOfMwOfSimpleCycleNaturalGasTurbine" xml:lang="en-US" id="label_NumberOfMwOfSimpleCycleNaturalGasTurbine_2">Number of MW of simple cycle natural gas turbine for which an advance determination of prudence was filed.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfMwOfSimpleCycleNaturalGasTurbine" xlink:to="label_NumberOfMwOfSimpleCycleNaturalGasTurbine_2" xlink:title="label: NumberOfMwOfSimpleCycleNaturalGasTurbine to label_NumberOfMwOfSimpleCycleNaturalGasTurbine"/>
    <link:label xlink:type="resource" xlink:label="label_NumberOfMwOfSimpleCycleNaturalGasTurbine_3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NumberOfMwOfSimpleCycleNaturalGasTurbine" xml:lang="en-US" id="label_NumberOfMwOfSimpleCycleNaturalGasTurbine_3">Number Of Mw Of Simple Cycle Natural Gas Turbine</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfMwOfSimpleCycleNaturalGasTurbine" xlink:to="label_NumberOfMwOfSimpleCycleNaturalGasTurbine_3" xlink:title="label: NumberOfMwOfSimpleCycleNaturalGasTurbine to label_NumberOfMwOfSimpleCycleNaturalGasTurbine"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_EstimatedProjectCostOfNaturalGasTurbineAndAssociatedFacilities" xlink:label="EstimatedProjectCostOfNaturalGasTurbineAndAssociatedFacilities" xlink:title="EstimatedProjectCostOfNaturalGasTurbineAndAssociatedFacilities"/>
    <link:label xlink:type="resource" xlink:label="label_EstimatedProjectCostOfNaturalGasTurbineAndAssociatedFacilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EstimatedProjectCostOfNaturalGasTurbineAndAssociatedFacilities" xml:lang="en-US" id="label_EstimatedProjectCostOfNaturalGasTurbineAndAssociatedFacilities">Estimated project cost of the natural gas turbine and associated facilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EstimatedProjectCostOfNaturalGasTurbineAndAssociatedFacilities" xlink:to="label_EstimatedProjectCostOfNaturalGasTurbineAndAssociatedFacilities" xlink:title="label: EstimatedProjectCostOfNaturalGasTurbineAndAssociatedFacilities to label_EstimatedProjectCostOfNaturalGasTurbineAndAssociatedFacilities"/>
    <link:label xlink:type="resource" xlink:label="label_EstimatedProjectCostOfNaturalGasTurbineAndAssociatedFacilities_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_EstimatedProjectCostOfNaturalGasTurbineAndAssociatedFacilities" xml:lang="en-US" id="label_EstimatedProjectCostOfNaturalGasTurbineAndAssociatedFacilities_2">Estimated project cost of the natural gas turbine and associated facilities.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EstimatedProjectCostOfNaturalGasTurbineAndAssociatedFacilities" xlink:to="label_EstimatedProjectCostOfNaturalGasTurbineAndAssociatedFacilities_2" xlink:title="label: EstimatedProjectCostOfNaturalGasTurbineAndAssociatedFacilities to label_EstimatedProjectCostOfNaturalGasTurbineAndAssociatedFacilities"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntityAbstract" xlink:label="IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntityAbstract" xlink:title="IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntityAbstract"/>
    <link:label xlink:type="resource" xlink:label="label_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntityAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntityAbstract" xml:lang="en-US" id="label_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntityAbstract">Income (loss) on discontinued operations</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntityAbstract" xlink:to="label_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntityAbstract" xlink:title="label: IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntityAbstract to label_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntityAbstract"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:label="ProceedsFromIssuanceOfLongTermDebt" xlink:title="ProceedsFromIssuanceOfLongTermDebt"/>
    <link:label xlink:type="resource" xlink:label="us-gaap_lab_ProceedsFromIssuanceOfLongTermDebt2" xlink:role="http://www.xbrl.org/2003/role/label" xml:lang="en-US" id="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_label_en-US2">Issuance of long-term debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromIssuanceOfLongTermDebt" xlink:to="us-gaap_lab_ProceedsFromIssuanceOfLongTermDebt2" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_AmountOfNaturalGasGatheringContractDisputeChargedToOperationsAndMaintenanceBeforeTax" xlink:label="AmountOfNaturalGasGatheringContractDisputeChargedToOperationsAndMaintenanceBeforeTax" xlink:title="AmountOfNaturalGasGatheringContractDisputeChargedToOperationsAndMaintenanceBeforeTax"/>
    <link:label xlink:type="resource" xlink:label="label_AmountOfNaturalGasGatheringContractDisputeChargedToOperationsAndMaintenanceBeforeTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_AmountOfNaturalGasGatheringContractDisputeChargedToOperationsAndMaintenanceBeforeTax" xml:lang="en-US" id="label_AmountOfNaturalGasGatheringContractDisputeChargedToOperationsAndMaintenanceBeforeTax">Amount of natural gas gathering contract dispute charged to operations and maintenance, before tax</link:label>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmountOfNaturalGasGatheringContractDisputeChargedToOperationsAndMaintenanceBeforeTax" xlink:to="label_AmountOfNaturalGasGatheringContractDisputeChargedToOperationsAndMaintenanceBeforeTax_2" xlink:title="label: AmountOfNaturalGasGatheringContractDisputeChargedToOperationsAndMaintenanceBeforeTax to label_AmountOfNaturalGasGatheringContractDisputeChargedToOperationsAndMaintenanceBeforeTax"/>
    <link:label xlink:type="resource" xlink:label="mdu_lab_AmountOfNaturalGasGatheringContractDisputeChargedToOperationsAndMaintenanceBeforeTax3" xlink:role="http://www.xbrl.org/2003/role/documentation" xml:lang="en-US" id="lab_mdu_AmountOfNaturalGasGatheringContractDisputeChargedToOperationsAndMaintenanceBeforeTax_label_en-US3">Amount of natural gas gathering contract dispute charged to operations and maintenance, before tax</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmountOfNaturalGasGatheringContractDisputeChargedToOperationsAndMaintenanceBeforeTax" xlink:to="mdu_lab_AmountOfNaturalGasGatheringContractDisputeChargedToOperationsAndMaintenanceBeforeTax3" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_LegalFeesAndExpensesAwardedInLitigation" xlink:label="LegalFeesAndExpensesAwardedInLitigation" xlink:title="LegalFeesAndExpensesAwardedInLitigation"/>
    <link:label xlink:type="resource" xlink:label="label_LegalFeesAndExpensesAwardedInLitigation" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LegalFeesAndExpensesAwardedInLitigation" xml:lang="en-US" id="label_LegalFeesAndExpensesAwardedInLitigation">Legal Fees And Expenses Awarded In Litigation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LegalFeesAndExpensesAwardedInLitigation" xlink:to="label_LegalFeesAndExpensesAwardedInLitigation" xlink:title="label: LegalFeesAndExpensesAwardedInLitigation to label_LegalFeesAndExpensesAwardedInLitigation"/>
    <link:label xlink:type="resource" xlink:label="label_LegalFeesAndExpensesAwardedInLitigation_2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="label_LegalFeesAndExpensesAwardedInLitigation" xml:lang="en-US" id="label_LegalFeesAndExpensesAwardedInLitigation_2">Legal fees and expenses awarded in litigation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LegalFeesAndExpensesAwardedInLitigation" xlink:to="label_LegalFeesAndExpensesAwardedInLitigation_2" xlink:title="label: LegalFeesAndExpensesAwardedInLitigation to label_LegalFeesAndExpensesAwardedInLitigation"/>
    <link:label xlink:type="resource" xlink:label="mdu_lab_LegalFeesAndExpensesAwardedInLitigation3" xlink:role="http://www.xbrl.org/2003/role/documentation" xml:lang="en-US" id="lab_mdu_LegalFeesAndExpensesAwardedInLitigation_label_en-US3">Legal Fees And Expenses Awarded In Litigation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LegalFeesAndExpensesAwardedInLitigation" xlink:to="mdu_lab_LegalFeesAndExpensesAwardedInLitigation3" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_CashPaymentToBeMadePursuantToSettlementAgreement" xlink:label="CashPaymentToBeMadePursuantToSettlementAgreement" xlink:title="CashPaymentToBeMadePursuantToSettlementAgreement"/>
    <link:label xlink:type="resource" xlink:label="label_CashPaymentToBeMadePursuantToSettlementAgreement" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CashPaymentToBeMadePursuantToSettlementAgreement" xml:lang="en-US" id="label_CashPaymentToBeMadePursuantToSettlementAgreement">Cash Payment To Be Made Pursuant To Settlement Agreement</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashPaymentToBeMadePursuantToSettlementAgreement" xlink:to="label_CashPaymentToBeMadePursuantToSettlementAgreement" xlink:title="label: CashPaymentToBeMadePursuantToSettlementAgreement to label_CashPaymentToBeMadePursuantToSettlementAgreement"/>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashPaymentToBeMadePursuantToSettlementAgreement" xlink:to="label_CashPaymentToBeMadePursuantToSettlementAgreement_2" xlink:title="label: CashPaymentToBeMadePursuantToSettlementAgreement to label_CashPaymentToBeMadePursuantToSettlementAgreement"/>
    <link:label xlink:type="resource" xlink:label="mdu_lab_CashPaymentToBeMadePursuantToSettlementAgreement3" xlink:role="http://www.xbrl.org/2003/role/documentation" xml:lang="en-US" id="lab_mdu_CashPaymentToBeMadePursuantToSettlementAgreement_label_en-US3">Cash payment to be made pursuant to settlement agreement</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashPaymentToBeMadePursuantToSettlementAgreement" xlink:to="mdu_lab_CashPaymentToBeMadePursuantToSettlementAgreement3" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="mdu-20110630.xsd#mdu_SuspendedPenaltiesRequiredIfNoncompliant" xlink:label="SuspendedPenaltiesRequiredIfNoncompliant" xlink:title="SuspendedPenaltiesRequiredIfNoncompliant"/>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SuspendedPenaltiesRequiredIfNoncompliant" xlink:to="label_SuspendedPenaltiesRequiredIfNoncompliant" xlink:title="label: SuspendedPenaltiesRequiredIfNoncompliant to label_SuspendedPenaltiesRequiredIfNoncompliant"/>
    <link:label xlink:type="resource" xlink:label="mdu_lab_SuspendedPenaltiesRequiredIfNoncompliant2" xlink:role="http://www.xbrl.org/2003/role/documentation" xml:lang="en-US" id="lab_mdu_SuspendedPenaltiesRequiredIfNoncompliant_label_en-US2">Suspended Penalties Required If Noncompliant (up to)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SuspendedPenaltiesRequiredIfNoncompliant" xlink:to="mdu_lab_SuspendedPenaltiesRequiredIfNoncompliant2" order="1.0"/>
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