Consolidated Balance Sheets - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 45,762	$ 56,650
Certificates of deposit	253,552	252,954
Accounts receivable, net	417,005	438,391
Inventories	723,688	755,261
Note receivable - sale of land	0	400,000
Total current assets	1,440,007	1,903,256
Properties, plants and equipment, net	15,254,204	15,227,172
Restricted cash for reclamation bonds	57,247	57,247
IVA receivable and other assets	367,769	369,448
Total assets	17,119,227	17,557,123
Current liabilities:
Checks issued and payable	113,028	46,482
Accounts payable	2,071,572	1,926,320
Due to factor	13,804	16,524
Accrued payroll, taxes and interest	241,882	159,037
Other accrued liabilities	389,693	353,911
Payables to related party	356,902	93,567
Deferred revenue	32,400	32,400
Notes payable to bank	199,998	183,917
Long-term debt, current portion, net of discount	761,663	705,460
Total current liabilities	4,180,942	3,517,618
Long-term debt, net of discount and current portion	918,435	1,027,730
Hillgrove advances payable	1,134,221	1,134,221
Stock payable to directors for services	62,500	175,000
Asset retirement obligations and accrued reclamation costs	280,794	277,720
Total liabilities	6,576,892	6,132,289
Commitments and contingencies (Note 7)
Stockholders' equity:
Common stock, $0.01 par value, 90,000,000 shares authorized; 68,757,354 and 68,227,171 shares issued and outstanding, respectively	687,573	682,271
Additional paid-in capital	36,712,572	36,406,874
Accumulated deficit	(26,884,598)	(25,691,099)
Total stockholders' equity	10,542,335	11,424,834
Total liabilities and stockholders' equity	17,119,227	17,557,123
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