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5. Property, Plant and Equipment: Property, Plant and Equipment (Details) (USD $) | Dec. 31, 2014 | Dec. 31, 2013
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Details |  |
Mill land | $ 225,289 njmc_MillLand | $ 225,289 njmc_MillLand
Mill building | 536,193 njmc_MillBuilding | 522,786 njmc_MillBuilding
Milling equipment | 4,001,771 njmc_MillingEquipment | 3,716,011 njmc_MillingEquipment
Mill buildings and improvements, accumulated depreciation | (152,151)njmc_MillBuildingsAndImprovementsAccumulatedDepreciation | (144,236)njmc_MillBuildingsAndImprovementsAccumulatedDepreciation
Mill Buildings and Improvements, Net | 4,611,102 njmc_MillBuildingsAndImprovementsNet | 4,319,850 njmc_MillBuildingsAndImprovementsNet
Buildings and Improvements, Gross | 252,348 us-gaap_BuildingsAndImprovementsGross | 495,037 us-gaap_BuildingsAndImprovementsGross
Buildings and improvements, accumulated depreciation | (216,926)njmc_BuildingsAndImprovementsAccumulatedDepreciation | (348,021)njmc_BuildingsAndImprovementsAccumulatedDepreciation
Buildings and improvements net | 35,442 njmc_BuildingsAndImprovementsNet | 147,016 njmc_BuildingsAndImprovementsNet
Land | 1,007,675 us-gaap_Land | 441,858 us-gaap_Land
Property, plant and equipment, net of accumulated depreciation | $ 5,654,199 us-gaap_PropertyPlantAndEquipmentNet | $ 4,908,724 us-gaap_PropertyPlantAndEquipmentNet

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- Definition Mill equipment + References No definition available. + Details
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- Definition Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 4 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6812-107765 + Details
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- Definition Amount before accumulated depletion of real estate held for productive use, excluding land held for sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 4 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6812-107765 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 + Details
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