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Consolidated Balance Sheets - USD ($)
Dec. 31, 2017
Dec. 31, 2016
Current assets:    
Cash and cash equivalents $ 27,987 $ 10,057
Certificates of deposit 252,298 251,641
Accounts receivable, net of allowance 362,579 552,119
Inventories 914,709 855,637
Other current assets 4,697 23,101
Total current assets 1,562,270 1,692,555
Properties, plants and equipment, net 15,132,897 15,695,966
Restricted cash for reclamation bonds 63,345 63,274
IVA receivable and other assets 372,742 314,203
Total assets 17,131,254 17,765,998
Current liabilities:    
Checks issued and payable 28,248 35,682
Accounts payable 2,276,357 1,797,251
Due to factor 10,880 150,399
Accrued payroll, taxes and interest 185,283 213,695
Other accrued liabilities 168,578 122,968
Payables to related parties 22,668 14,525
Deferred revenue 60,049 78,730
Notes payable to bank 192,565 167,317
Income taxes payable (Note 13) 443,110 410,510
Long-term debt, current portion, net of discount 546,988 391,046
Total current liabilities 3,934,726 3,382,123
Long-term debt, net of discount and current portion 1,239,126 1,472,869
Hillgrove advances payable (Note 10) 1,134,221 1,134,221
Stock payable to directors for services 175,000 168,750
Asset retirement obligation and accrued reclamation costs 271,572 265,782
Total liabilities 6,754,645 6,423,745
Commitments and contingencies (Note 4, 10 and 15)
Stockholders' equity:    
Preferred stock $0.01 par value, 10,000,000 shares authorized: Series A: -0- shares issued and outstanding 0 0
Series B: 750,000 shares issued and outstanding (liquidation preference $922,500 and $915,000 respectively) 7,500 7,500
Series C: 177,904 shares issued and outstanding (liquidation preference $97,847 both years) 1,779 1,779
Series D: 1,751,005 shares issued and outstanding (liquidation preference $4,961,324 and $4,920,178 respectively) 17,509 17,509
Common stock, $0.01 par value, 90,000,000 shares authorized; 67,488,153 and 67,066,278 shares issued and outstanding, respectively 674,881 670,662
Additional paid-in capital 36,239,264 36,074,733
Accumulated deficit (26,564,324) (25,429,930)
Total stockholders' equity 10,376,609 11,342,253
Total liabilities and stockholders' equity $ 17,131,254 $ 17,765,998