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v2.4.1.9

5. Property, Plant and Equipment (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013
Details |  |
Interest expense, mill | $ 25,021 njmc_InterestExpenseMill |
Vehicle cost basis | 5,930 njmc_VehicleCostBasis |
Drill cost basis | 265,316 njmc_DrillCostBasis |
Drill disposal price | 66,826 njmc_DrillDisposalPrice |
Net loss (gain) on sale of equipment | 34,878 us-gaap_GainLossOnSaleOfPropertyPlantEquipment | (108,208)us-gaap_GainLossOnSaleOfPropertyPlantEquipment
Ball mill cost basis | 9,850 njmc_BallMillCostBasis |
Gain loss on sale of other equipment | 850 njmc_GainLossOnSaleOfOtherEquipment |
Vehicle cost basis | 240,055 njmc_OtherDisposedEquipmentCostBasis |
Other disposed equipment disposal price | 112,000 njmc_OtherDisposedEquipmentDisposalPrice |
Gain (Loss) on Disposition of Assets for Financial Service Operations | 112,000 us-gaap_GainsLossesOnSalesOfAssets |
Cash received for land interest | 10,000 njmc_CashReceivedLandInterest | 24,000 njmc_CashReceivedLandInterest
Accumulated Amortization of Other Deferred Costs | 91,625 us-gaap_AccumulatedAmortizationOfOtherDeferredCosts | 65,258 us-gaap_AccumulatedAmortizationOfOtherDeferredCosts
Purchase and sale agreement, property | 425,000 njmc_PurchaseSaleAgreementOriginalPrice |
Purchase and sale agreement, down payment | 125,000 njmc_PurchaseSaleAgreementDownPayment |
Purchase and sale agreement, scheduled payment | $ 125,000 njmc_PurchaseSaleAgreementScheduledPayment |

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- Definition Cost basis of ball mill disposed. + References No definition available. + Details
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- Definition Cost basis of drill disposed. + References No definition available. + Details
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Period Type: | duration

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- Definition Cash received for drill disposed. + References No definition available. + Details
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- Definition Amount of gain (loss) on sale or disposal of equipment assets. + References No definition available. + Details
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Namespace Prefix: | njmc_
Data Type: | xbrli:monetaryItemType
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Period Type: | duration

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- Definition Interest expense, mill + References No definition available. + Details
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Balance Type: | debit
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- Definition Cost basis of other equipment disposed. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Purchase and sale agreement, down payment on property + References No definition available. + Details
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Namespace Prefix: | njmc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Purchase and sale agreement, original price of property + References No definition available. + Details
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Namespace Prefix: | njmc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Purchase and sale agreement, scheduled payment on property + References No definition available. + Details
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Balance Type: | debit
Period Type: | duration

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- Definition Cost basis of vehicle disposed. + References No definition available. + Details
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Balance Type: | debit
Period Type: | duration

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- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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