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Unaudited Condensed Consolidated Statements of Operations - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Revenue        
Coal sales $ 10,522,122 $ 20,374,100
Coal processing 551,380 2,237,674
Total revenue 11,073,502 22,611,774
Costs and expenses        
Cost of coal sales (exclusive of items shown separately below) 9,787,810 19,625,423
Cost of coal processing (exclusive of items shown separately below) 687,151 1,695,450
Other operating costs and expenses 1,396,690 153,690 1,413,990 225,255
Asset retirement obligation accretion 101,276 20,134 202,553 40,269
Depreciation, depletion and amortization 310,889 467,016
Professional fees 272,164 70,009 586,942 3,411,637
Selling, general and administrative 2,227,116 359,497 5,513,701 759,492
Total costs and expenses 14,783,096 603,330 29,505,075 4,436,653
Operating loss (3,709,594) (603,330) (6,893,301) (4,436,653)
Interest and dividend income 100,343 216,772
Other income and expense 121,492 118,235
Interest expense (212) (9,469) (22,820) (10,711)
Net loss $ (3,487,971) $ (612,799) $ (6,581,114) $ (4,447,364)
Unaudited pro forma basic and fully diluted loss per share (in dollars per share) $ (0.09) $ (0.03) $ (0.18) $ (0.20)