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    <link:label id="lab_us-gaap_MaximumMember_3EA4B75F03C30B3DA392FDAACD6F6059_terseLabel_en-US" xlink:label="lab_us-gaap_MaximumMember_3EA4B75F03C30B3DA392FDAACD6F6059" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maximum [Member]</link:label>
    <link:label id="lab_us-gaap_MaximumMember_3EA4B75F03C30B3DA392FDAACD6F6059_label_en-US" xlink:label="lab_us-gaap_MaximumMember_3EA4B75F03C30B3DA392FDAACD6F6059" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Maximum [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember_3EA4B75F03C30B3DA392FDAACD6F6059" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_LineOfCreditFacilityLineItems" xlink:label="loc_us-gaap_LineOfCreditFacilityLineItems_6F866F0D014C007C2CAAFDAACD6F7F5A" xlink:type="locator" />
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    <link:label id="lab_bcc_Thresholdofavailabilityasapercentageofaggregatelendingcommitmentsbelowwhich11fixedchargecoverageratiomustbemet_1FC062BAAAA7415184B3FDAACD6FB8B2_label_en-US" xlink:label="lab_bcc_Thresholdofavailabilityasapercentageofaggregatelendingcommitmentsbelowwhich11fixedchargecoverageratiomustbemet_1FC062BAAAA7415184B3FDAACD6FB8B2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Threshold of availability as a percentage of aggregate lending commitments, below which 1:1 fixed charge coverage ratio must be met</link:label>
    <link:label id="lab_bcc_Thresholdofavailabilityasapercentageofaggregatelendingcommitmentsbelowwhich11fixedchargecoverageratiomustbemet_1FC062BAAAA7415184B3FDAACD6FB8B2_documentation_en-US" xlink:label="lab_bcc_Thresholdofavailabilityasapercentageofaggregatelendingcommitmentsbelowwhich11fixedchargecoverageratiomustbemet_1FC062BAAAA7415184B3FDAACD6FB8B2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Threshold of availability as a percentage of aggregate lending commitments, below which a minimum 1:1 fixed charge ratio is required.</link:label>
    <link:loc xlink:href="bcc-20170630.xsd#bcc_Thresholdofavailabilityasapercentageofaggregatelendingcommitmentsbelowwhich11fixedchargecoverageratiomustbemet" xlink:label="loc_bcc_Thresholdofavailabilityasapercentageofaggregatelendingcommitmentsbelowwhich11fixedchargecoverageratiomustbemet_1FC062BAAAA7415184B3FDAACD6FB8B2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_bcc_Thresholdofavailabilityasapercentageofaggregatelendingcommitmentsbelowwhich11fixedchargecoverageratiomustbemet_1FC062BAAAA7415184B3FDAACD6FB8B2" xlink:to="lab_bcc_Thresholdofavailabilityasapercentageofaggregatelendingcommitmentsbelowwhich11fixedchargecoverageratiomustbemet_1FC062BAAAA7415184B3FDAACD6FB8B2" xlink:type="arc" />
    <link:label id="lab_bcc_Thresholdofavailabilitybelowwhich11fixedchargecoverageratiomustbemet_E1676A56C41D66B33054FDAACD6F354F_terseLabel_en-US" xlink:label="lab_bcc_Thresholdofavailabilitybelowwhich11fixedchargecoverageratiomustbemet_E1676A56C41D66B33054FDAACD6F354F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Threshold of availability, below which 1:1 fixed charge coverage ratio must be met</link:label>
    <link:label id="lab_bcc_Thresholdofavailabilitybelowwhich11fixedchargecoverageratiomustbemet_E1676A56C41D66B33054FDAACD6F354F_label_en-US" xlink:label="lab_bcc_Thresholdofavailabilitybelowwhich11fixedchargecoverageratiomustbemet_E1676A56C41D66B33054FDAACD6F354F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Threshold of availability, below which 1:1 fixed charge coverage ratio must be met</link:label>
    <link:label id="lab_bcc_Thresholdofavailabilitybelowwhich11fixedchargecoverageratiomustbemet_E1676A56C41D66B33054FDAACD6F354F_documentation_en-US" xlink:label="lab_bcc_Thresholdofavailabilitybelowwhich11fixedchargecoverageratiomustbemet_E1676A56C41D66B33054FDAACD6F354F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The amount of the threshold of availability, representing 10% of aggregate lending commitments, below which a minimum 1:1 fixed charge ratio is required.</link:label>
    <link:loc xlink:href="bcc-20170630.xsd#bcc_Thresholdofavailabilitybelowwhich11fixedchargecoverageratiomustbemet" xlink:label="loc_bcc_Thresholdofavailabilitybelowwhich11fixedchargecoverageratiomustbemet_E1676A56C41D66B33054FDAACD6F354F" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_D03CBE37491345E503C4FDAACD6F7C17_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_D03CBE37491345E503C4FDAACD6F7C17" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current availability</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_D03CBE37491345E503C4FDAACD6F7C17" xlink:type="locator" />
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    <link:label id="lab_bcc_DividendrestrictionsinglethresholdpercentageofaggregateRevolverCommitments_6CBB630D96B21F68E2C8FDAACD6F3846_terseLabel_en-US" xlink:label="lab_bcc_DividendrestrictionsinglethresholdpercentageofaggregateRevolverCommitments_6CBB630D96B21F68E2C8FDAACD6F3846" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Dividend restriction, single threshold, percentage of aggregate Revolver Commitments</link:label>
    <link:label id="lab_bcc_DividendrestrictionsinglethresholdpercentageofaggregateRevolverCommitments_6CBB630D96B21F68E2C8FDAACD6F3846_label_en-US" xlink:label="lab_bcc_DividendrestrictionsinglethresholdpercentageofaggregateRevolverCommitments_6CBB630D96B21F68E2C8FDAACD6F3846" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dividend restriction, single threshold, percentage of aggregate Revolver Commitments</link:label>
    <link:label id="lab_bcc_DividendrestrictionsinglethresholdpercentageofaggregateRevolverCommitments_6CBB630D96B21F68E2C8FDAACD6F3846_documentation_en-US" xlink:label="lab_bcc_DividendrestrictionsinglethresholdpercentageofaggregateRevolverCommitments_6CBB630D96B21F68E2C8FDAACD6F3846" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The single threshold of pro forma excess availability as a percentage of aggregate revolver commitments, below which dividends cannot be paid, unless the alternative combination thresholds are met.</link:label>
    <link:loc xlink:href="bcc-20170630.xsd#bcc_DividendrestrictionsinglethresholdpercentageofaggregateRevolverCommitments" xlink:label="loc_bcc_DividendrestrictionsinglethresholdpercentageofaggregateRevolverCommitments_6CBB630D96B21F68E2C8FDAACD6F3846" xlink:type="locator" />
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    <link:label id="lab_bcc_DividendrestrictioncombinationthresholdspercentageofaggregateRevolverCommitments_C0140214A53B613E3956FDAACD6F1E4F_label_en-US" xlink:label="lab_bcc_DividendrestrictioncombinationthresholdspercentageofaggregateRevolverCommitments_C0140214A53B613E3956FDAACD6F1E4F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dividend restriction, combination thresholds, percentage of aggregate Revolver Commitments</link:label>
    <link:label id="lab_bcc_DividendrestrictioncombinationthresholdspercentageofaggregateRevolverCommitments_C0140214A53B613E3956FDAACD6F1E4F_documentation_en-US" xlink:label="lab_bcc_DividendrestrictioncombinationthresholdspercentageofaggregateRevolverCommitments_C0140214A53B613E3956FDAACD6F1E4F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Under the combination thresholds, minimum pro forma excess availability as a percentage of aggregate revolver commitments. If that percentage is met and the 1:1 pro forma fixed charge coverage ratio is also met, there is no restriction upon the payment of dividends.</link:label>
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    <link:label id="lab_bcc_Dividendrestrictioncombinationthresholdsfixedchargecoverageratioasapercent_B223B1753F91A5DC5B8BFDAACD6FEBEF_documentation_en-US" xlink:label="lab_bcc_Dividendrestrictioncombinationthresholdsfixedchargecoverageratioasapercent_B223B1753F91A5DC5B8BFDAACD6FEBEF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Under the combination thresholds, minimum pro forma fixed charge coverage ratio. If that percentage is met and the 15% pro forma excess availability as a percentage of aggregate revolver commitments is also met, there is no restriction upon the payment of dividends.</link:label>
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_4F1A2D0685F21FACCD387B4B92968921_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_4F1A2D0685F21FACCD387B4B92968921" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash provided by (used for) investment</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_4F1A2D0685F21FACCD387B4B92968921_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_4F1A2D0685F21FACCD387B4B92968921" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_4F1A2D0685F21FACCD387B4B92968921" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_4F1A2D0685F21FACCD387B4B92968921" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_4F1A2D0685F21FACCD387B4B92968921" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_AE179C1AA029C8A58A667B4B92965777_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_AE179C1AA029C8A58A667B4B92965777" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Expenditures for property and equipment</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_AE179C1AA029C8A58A667B4B92965777_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_AE179C1AA029C8A58A667B4B92965777" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Property, Plant, and Equipment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_AE179C1AA029C8A58A667B4B92965777" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_AE179C1AA029C8A58A667B4B92965777" xlink:to="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_AE179C1AA029C8A58A667B4B92965777" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_F1FAA654FDE115A67A297B4B92963173_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_F1FAA654FDE115A67A297B4B92963173" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Acquisition of businesses and facilities</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_F1FAA654FDE115A67A297B4B92963173_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_F1FAA654FDE115A67A297B4B92963173" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Businesses, Net of Cash Acquired</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_F1FAA654FDE115A67A297B4B92963173" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_A125F2DD55E7BC96CB147B4B92969431_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_A125F2DD55E7BC96CB147B4B92969431" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from sales of assets and other</link:label>
    <link:label id="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_A125F2DD55E7BC96CB147B4B92969431_label_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_A125F2DD55E7BC96CB147B4B92969431" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Sale of Property, Plant, and Equipment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_A125F2DD55E7BC96CB147B4B92969431" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_A125F2DD55E7BC96CB147B4B92969431" xlink:to="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_A125F2DD55E7BC96CB147B4B92969431" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_52DAD28D9471309315DF7B4B9296AF89_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_52DAD28D9471309315DF7B4B9296AF89" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash used for investment</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_52DAD28D9471309315DF7B4B9296AF89_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_52DAD28D9471309315DF7B4B9296AF89" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities, Continuing Operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_52DAD28D9471309315DF7B4B9296AF89" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_52DAD28D9471309315DF7B4B9296AF89" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_52DAD28D9471309315DF7B4B9296AF89" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_03E1D71114C95B316F227B4B9296993D_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_03E1D71114C95B316F227B4B9296993D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash provided by (used for) financing</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_03E1D71114C95B316F227B4B9296993D_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_03E1D71114C95B316F227B4B9296993D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Financing Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_03E1D71114C95B316F227B4B9296993D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_03E1D71114C95B316F227B4B9296993D" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_03E1D71114C95B316F227B4B9296993D" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_CDFB1F69410CF2B54C5C7B4B92967F90_verboseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_CDFB1F69410CF2B54C5C7B4B92967F90" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Borrowings of long-term debt, including revolving credit facility</link:label>
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_CDFB1F69410CF2B54C5C7B4B92967F90_label_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfLongTermDebt_CDFB1F69410CF2B54C5C7B4B92967F90" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Issuance of Long-term Debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_CDFB1F69410CF2B54C5C7B4B92967F90" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RepaymentsOfLongTermDebt_C64CCB28E3091E3A9FBF7B4B92967A81_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebt_C64CCB28E3091E3A9FBF7B4B92967A81" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Payments on long-term debt, including revolving credit facility</link:label>
    <link:label id="lab_us-gaap_RepaymentsOfLongTermDebt_C64CCB28E3091E3A9FBF7B4B92967A81_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermDebt_C64CCB28E3091E3A9FBF7B4B92967A81" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Repayments of Long-term Debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_C64CCB28E3091E3A9FBF7B4B92967A81" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_C469E32B3248683B660C7B4B929672DA_label_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_C469E32B3248683B660C7B4B929672DA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for Repurchase of Common Stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_C469E32B3248683B660C7B4B929672DA" xlink:type="locator" />
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    <link:label id="lab_us-gaap_PaymentsOfDebtIssuanceCosts_72ED032C35ABABC52D037B4B92971CB4_label_en-US" xlink:label="lab_us-gaap_PaymentsOfDebtIssuanceCosts_72ED032C35ABABC52D037B4B92971CB4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments of Debt Issuance Costs</link:label>
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    <link:label id="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_9AF305AA16C90C3DEAB57B4B92975B4A_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_9AF305AA16C90C3DEAB57B4B92975B4A" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Tax withholding payments on stock-based awards</link:label>
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    <link:label id="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_E2C33E6FD456FA0DB6747B4B92975CDA_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_E2C33E6FD456FA0DB6747B4B92975CDA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
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    <link:label id="lab_us-gaap_PerformanceSharesMember_E1A26854A4B3E2F4B3357FDB1B7574B0_label_en-US" xlink:label="lab_us-gaap_PerformanceSharesMember_E1A26854A4B3E2F4B3357FDB1B7574B0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Performance Shares [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="loc_us-gaap_PerformanceSharesMember_E1A26854A4B3E2F4B3357FDB1B7574B0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PerformanceSharesMember_E1A26854A4B3E2F4B3357FDB1B7574B0" xlink:to="lab_us-gaap_PerformanceSharesMember_E1A26854A4B3E2F4B3357FDB1B7574B0" xlink:type="arc" />
    <link:label id="lab_us-gaap_RestrictedStockUnitsRSUMember_CF146671602AEF30249B7FDB1B75C128_terseLabel_en-US" xlink:label="lab_us-gaap_RestrictedStockUnitsRSUMember_CF146671602AEF30249B7FDB1B75C128" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted Stock Units (RSUs) [Member]</link:label>
    <link:label id="lab_us-gaap_RestrictedStockUnitsRSUMember_CF146671602AEF30249B7FDB1B75C128_label_en-US" xlink:label="lab_us-gaap_RestrictedStockUnitsRSUMember_CF146671602AEF30249B7FDB1B75C128" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted Stock Units (RSUs) [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_CF146671602AEF30249B7FDB1B75C128" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestrictedStockUnitsRSUMember_CF146671602AEF30249B7FDB1B75C128" xlink:to="lab_us-gaap_RestrictedStockUnitsRSUMember_CF146671602AEF30249B7FDB1B75C128" xlink:type="arc" />
    <link:label id="lab_us-gaap_EmployeeStockOptionMember_0B818A57BE05E06F6D017FDB1B75468C_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeStockOptionMember_0B818A57BE05E06F6D017FDB1B75468C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Employee Stock Options [Member]</link:label>
    <link:label id="lab_us-gaap_EmployeeStockOptionMember_0B818A57BE05E06F6D017FDB1B75468C_label_en-US" xlink:label="lab_us-gaap_EmployeeStockOptionMember_0B818A57BE05E06F6D017FDB1B75468C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Employee Stock Option [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="loc_us-gaap_EmployeeStockOptionMember_0B818A57BE05E06F6D017FDB1B75468C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EmployeeStockOptionMember_0B818A57BE05E06F6D017FDB1B75468C" xlink:to="lab_us-gaap_EmployeeStockOptionMember_0B818A57BE05E06F6D017FDB1B75468C" xlink:type="arc" />
    <link:label id="lab_us-gaap_OfficerMember_E345832E9DDBF4E08C687FDB1B756F07_terseLabel_en-US" xlink:label="lab_us-gaap_OfficerMember_E345832E9DDBF4E08C687FDB1B756F07" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Officer [Member]</link:label>
    <link:label id="lab_us-gaap_OfficerMember_E345832E9DDBF4E08C687FDB1B756F07_label_en-US" xlink:label="lab_us-gaap_OfficerMember_E345832E9DDBF4E08C687FDB1B756F07" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Officer [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_OfficerMember" xlink:label="loc_us-gaap_OfficerMember_E345832E9DDBF4E08C687FDB1B756F07" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OfficerMember_E345832E9DDBF4E08C687FDB1B756F07" xlink:to="lab_us-gaap_OfficerMember_E345832E9DDBF4E08C687FDB1B756F07" xlink:type="arc" />
    <link:label id="lab_bcc_OtheremployeesMember_81108027CC6FA30D60677FDB1B7575B7_terseLabel_en-US" xlink:label="lab_bcc_OtheremployeesMember_81108027CC6FA30D60677FDB1B7575B7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other employees [Member]</link:label>
    <link:label id="lab_bcc_OtheremployeesMember_81108027CC6FA30D60677FDB1B7575B7_label_en-US" xlink:label="lab_bcc_OtheremployeesMember_81108027CC6FA30D60677FDB1B7575B7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other employees [Member]</link:label>
    <link:label id="lab_bcc_OtheremployeesMember_81108027CC6FA30D60677FDB1B7575B7_documentation_en-US" xlink:label="lab_bcc_OtheremployeesMember_81108027CC6FA30D60677FDB1B7575B7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">All employees, except officers</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_bcc_OtheremployeesMember_81108027CC6FA30D60677FDB1B7575B7" xlink:to="lab_bcc_OtheremployeesMember_81108027CC6FA30D60677FDB1B7575B7" xlink:type="arc" />
    <link:label id="lab_bcc_OfficersandotheremployeesMember_8F422D887960C30443437FDB1B75E691_terseLabel_en-US" xlink:label="lab_bcc_OfficersandotheremployeesMember_8F422D887960C30443437FDB1B75E691" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Officers and other employees [Member]</link:label>
    <link:label id="lab_bcc_OfficersandotheremployeesMember_8F422D887960C30443437FDB1B75E691_label_en-US" xlink:label="lab_bcc_OfficersandotheremployeesMember_8F422D887960C30443437FDB1B75E691" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Officers and other employees [Member]</link:label>
    <link:label id="lab_bcc_OfficersandotheremployeesMember_8F422D887960C30443437FDB1B75E691_documentation_en-US" xlink:label="lab_bcc_OfficersandotheremployeesMember_8F422D887960C30443437FDB1B75E691" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Officers and other employees, except retirement-eligible employees.</link:label>
    <link:loc xlink:href="bcc-20170630.xsd#bcc_OfficersandotheremployeesMember" xlink:label="loc_bcc_OfficersandotheremployeesMember_8F422D887960C30443437FDB1B75E691" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_bcc_OfficersandotheremployeesMember_8F422D887960C30443437FDB1B75E691" xlink:to="lab_bcc_OfficersandotheremployeesMember_8F422D887960C30443437FDB1B75E691" xlink:type="arc" />
    <link:label id="lab_bcc_NonemployeeDirectorsMember_DABE9204AA68E8A29D5E7FDB1B75BB22_terseLabel_en-US" xlink:label="lab_bcc_NonemployeeDirectorsMember_DABE9204AA68E8A29D5E7FDB1B75BB22" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Nonemployee Directors [Member]</link:label>
    <link:label id="lab_bcc_NonemployeeDirectorsMember_DABE9204AA68E8A29D5E7FDB1B75BB22_label_en-US" xlink:label="lab_bcc_NonemployeeDirectorsMember_DABE9204AA68E8A29D5E7FDB1B75BB22" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Nonemployee Directors [Member]</link:label>
    <link:label id="lab_bcc_NonemployeeDirectorsMember_DABE9204AA68E8A29D5E7FDB1B75BB22_documentation_en-US" xlink:label="lab_bcc_NonemployeeDirectorsMember_DABE9204AA68E8A29D5E7FDB1B75BB22" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Nonemployee directors of the entity.</link:label>
    <link:loc xlink:href="bcc-20170630.xsd#bcc_NonemployeeDirectorsMember" xlink:label="loc_bcc_NonemployeeDirectorsMember_DABE9204AA68E8A29D5E7FDB1B75BB22" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_bcc_NonemployeeDirectorsMember_DABE9204AA68E8A29D5E7FDB1B75BB22" xlink:to="lab_bcc_NonemployeeDirectorsMember_DABE9204AA68E8A29D5E7FDB1B75BB22" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_4B196BA40F5B005A05517FDB1B754C81_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_4B196BA40F5B005A05517FDB1B754C81" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock-Based Compensation [Abstract]</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_4B196BA40F5B005A05517FDB1B754C81" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_4B196BA40F5B005A05517FDB1B754C81" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_4B196BA40F5B005A05517FDB1B754C81" xlink:type="arc" />
    <link:label id="lab_bcc_Numberoftypesofstockbasedawardsgrantedintypes_2AA646BA2FB1742BF3807FDB1B75DBB0_terseLabel_en-US" xlink:label="lab_bcc_Numberoftypesofstockbasedawardsgrantedintypes_2AA646BA2FB1742BF3807FDB1B75DBB0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of types of stock-based awards granted (in types)</link:label>
    <link:label id="lab_bcc_Numberoftypesofstockbasedawardsgrantedintypes_2AA646BA2FB1742BF3807FDB1B75DBB0_label_en-US" xlink:label="lab_bcc_Numberoftypesofstockbasedawardsgrantedintypes_2AA646BA2FB1742BF3807FDB1B75DBB0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of types of stock-based awards granted (in types)</link:label>
    <link:label id="lab_bcc_Numberoftypesofstockbasedawardsgrantedintypes_2AA646BA2FB1742BF3807FDB1B75DBB0_documentation_en-US" xlink:label="lab_bcc_Numberoftypesofstockbasedawardsgrantedintypes_2AA646BA2FB1742BF3807FDB1B75DBB0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The number of types of stock-based awards granted during the period.</link:label>
    <link:loc xlink:href="bcc-20170630.xsd#bcc_Numberoftypesofstockbasedawardsgrantedintypes" xlink:label="loc_bcc_Numberoftypesofstockbasedawardsgrantedintypes_2AA646BA2FB1742BF3807FDB1B75DBB0" xlink:type="locator" />
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    <link:label id="lab_bcc_PerformanceSharesTargetPercentageEarnedasapercentageofROICtargetamount_E618E90067508DE194827FDB1B758910_terseLabel_en-US" xlink:label="lab_bcc_PerformanceSharesTargetPercentageEarnedasapercentageofROICtargetamount_E618E90067508DE194827FDB1B758910" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Performance Shares Target Percentage Earned, Officers</link:label>
    <link:label id="lab_bcc_PerformanceSharesTargetPercentageEarnedasapercentageofROICtargetamount_E618E90067508DE194827FDB1B758910_label_en-US" xlink:label="lab_bcc_PerformanceSharesTargetPercentageEarnedasapercentageofROICtargetamount_E618E90067508DE194827FDB1B758910" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Performance Shares Target Percentage Earned, as a percentage of ROIC target amount</link:label>
    <link:label id="lab_bcc_PerformanceSharesTargetPercentageEarnedasapercentageofROICtargetamount_E618E90067508DE194827FDB1B758910_documentation_en-US" xlink:label="lab_bcc_PerformanceSharesTargetPercentageEarnedasapercentageofROICtargetamount_E618E90067508DE194827FDB1B758910" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The percentage of the target amount of performance shares percentage awarded, based on the entity's return on invested capital (ROIC), determined in accordance with the grant agreement.</link:label>
    <link:loc xlink:href="bcc-20170630.xsd#bcc_PerformanceSharesTargetPercentageEarnedasapercentageofROICtargetamount" xlink:label="loc_bcc_PerformanceSharesTargetPercentageEarnedasapercentageofROICtargetamount_E618E90067508DE194827FDB1B758910" xlink:type="locator" />
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    <link:label id="lab_bcc_PerformanceSharesTargetPercentageEarned_29387BC09E8CF0E774327FDB1B759FC7_terseLabel_en-US" xlink:label="lab_bcc_PerformanceSharesTargetPercentageEarned_29387BC09E8CF0E774327FDB1B759FC7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Performance Shares Target Percentage Earned, Other Employees</link:label>
    <link:label id="lab_bcc_PerformanceSharesTargetPercentageEarned_29387BC09E8CF0E774327FDB1B759FC7_label_en-US" xlink:label="lab_bcc_PerformanceSharesTargetPercentageEarned_29387BC09E8CF0E774327FDB1B759FC7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Performance Shares Target Percentage Earned</link:label>
    <link:label id="lab_bcc_PerformanceSharesTargetPercentageEarned_29387BC09E8CF0E774327FDB1B759FC7_documentation_en-US" xlink:label="lab_bcc_PerformanceSharesTargetPercentageEarned_29387BC09E8CF0E774327FDB1B759FC7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The performance shares awarded to participants during the period as a percentage of the target based on the entity's EBITDA, determined in accordance with the grant agreement.</link:label>
    <link:loc xlink:href="bcc-20170630.xsd#bcc_PerformanceSharesTargetPercentageEarned" xlink:label="loc_bcc_PerformanceSharesTargetPercentageEarned_29387BC09E8CF0E774327FDB1B759FC7" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_391D7B479FD86CCDE9957FDB1B75EE94_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_391D7B479FD86CCDE9957FDB1B75EE94" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair market value of awards</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_391D7B479FD86CCDE9957FDB1B75EE94_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_391D7B479FD86CCDE9957FDB1B75EE94" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_391D7B479FD86CCDE9957FDB1B75EE94" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_391D7B479FD86CCDE9957FDB1B75EE94" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_391D7B479FD86CCDE9957FDB1B75EE94" xlink:type="arc" />
    <link:label id="lab_us-gaap_AllocatedShareBasedCompensationExpense_C5C7BBDB87EB8CCD114F7FDB1B75E482_terseLabel_en-US" xlink:label="lab_us-gaap_AllocatedShareBasedCompensationExpense_C5C7BBDB87EB8CCD114F7FDB1B75E482" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock-based compensation expense</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2016/elts/us-gaap-2016-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_C5C7BBDB87EB8CCD114F7FDB1B75E482" xlink:type="locator" />
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    <link:label id="lab_bcc_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsPerformanceTrueup_444211A656F86081EE6C7FDB1B754D4B_label_en-US" xlink:label="lab_bcc_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsPerformanceTrueup_444211A656F86081EE6C7FDB1B754D4B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Performance True-up</link:label>
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