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New Jersey Mining Company Consolidated Statements of Operations - USD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Details    
Revenue-gold sales $ 6,119,512 $ 3,629,837
Cost of sales:    
Cost of sales and other direct production costs 4,800,959 3,988,779
Depreciation and amortization 580,005 367,939
Total cost of sales 5,380,964 4,356,718
Gross profit (loss) 738,548 (726,881)
Other operating expenses (income):    
Pre-development expenses 117,440 195,068
Exploration 214,924 467,296
Gain on sale of mineral property 0 (2,947,862)
Loss on abandonment of mineral property 333,333 0
Management 153,484 155,217
Professional services 151,434 186,304
General and administrative 453,958 392,654
Total other operating expenses (income) 1,424,573 (1,551,323)
Income (loss) from operations (686,025) 824,442
Other (income) expense:    
Timber revenue (13,235) 0
Timber expense 1,963 0
Interest income (33,017) (27,511)
Interest expense 84,771 83,690
Change in fair value of forward gold contracts 0 15,984
Total other (income) expense 40,482 72,163
Net income (loss) (726,507) 752,279
Net income (loss) attributable to non-controlling interest (116,902) (77,735)
Net income (loss) attributable to New Jersey Mining Company $ (609,605) $ 830,014
Net income (loss) per common share-basic and diluted $ 0 $ 0
Weighted average common shares outstanding-basic 123,658,174 120,024,534
Weighted average common shares outstanding-diluted 123,658,174 122,339,225