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Consolidated Balance Sheets - USD ($)
Jun. 30, 2020
Dec. 31, 2019
Current assets:    
Cash and cash equivalents $ 123,415 $ 115,506
Certificates of deposit 254,212 253,552
Accounts receivable, net 233,636 284,453
Inventories 586,354 626,244
Total current assets 1,197,617 1,279,755
Properties, plants and equipment, net 11,937,366 12,186,848
Restricted cash for reclamation bonds 57,261 57,261
IVA receivable and other assets 214,063 170,111
Total assets 13,406,307 13,693,975
Current liabilities:    
Checks issued and payable 160,163 17,633
Accounts payable 2,072,609 2,328,977
Due to factor 11,492 10,880
Accrued payroll, taxes and interest 189,777 260,800
Other accrued liabilities 381,563 334,208
Payables to related party 272,054 359,309
Deferred revenue 32,400 32,400
Notes payable to bank 165,931 197,066
Hillgrove advances payable (Note 10) 378,074 378,074
Long-term debt, current portion 55,875 56,334
Total current liabilities 3,719,938 3,975,681
Long-term debt, net of current portion 55,983 76,762
Hillgrove advances payable 756,147 756,147
Note payable-SBA (Note 15) 443,400 0
Stock payable to directors for services 65,625 134,375
Asset retirement obligations and accrued reclamation costs 288,254 283,868
Total liabilities 5,329,347 5,226,833
Commitments and contingencies (Note 4 and 10)
Stockholders' equity:    
Common stock, $0.01 par value, 90,000,000 shares authorized; 70,206,899 and 69,661,436 shares issued and outstanding, respectively 702,068 696,614
Additional paid-in capital 37,295,259 37,107,730
Accumulated deficit (29,947,155) (29,363,990)
Total stockholders' equity 8,076,960 8,467,142
Total liabilities and stockholders' equity 13,406,307 13,693,975
Series A    
Stockholders' equity:    
Preferred stock $0.01 par value, 10,000,000 shares authorized 0 0
Series B    
Stockholders' equity:    
Preferred stock $0.01 par value, 10,000,000 shares authorized 7,500 7,500
Series C    
Stockholders' equity:    
Preferred stock $0.01 par value, 10,000,000 shares authorized 1,779 1,779
Series D    
Stockholders' equity:    
Preferred stock $0.01 par value, 10,000,000 shares authorized $ 17,509 $ 17,509