Consolidated Balance Sheets - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 22,364,607	$ 665,102
Certificates of deposit	44,028	254,212
Accounts receivable	601,315	238,634
Inventories	566,711	650,213
Total current assets	23,576,661	1,808,161
Properties, plants and equipment, net	10,898,313	11,225,594
Restricted cash for reclamation bonds	57,275	57,275
IVA receivable and other assets	223,874	208,472
Total assets	34,756,123	13,299,502
Current liabilities:
Checks issued and payable	0	86,685
Accounts payable	1,357,304	1,876,874
Accrued liabilities	542,699	635,626
Payables to related party	16,994	227,432
Notes payable to bank	0	100,000
Export tax assessment payable	0	1,120,730
Hillgrove advances payable (Note 12)	0	378,074
Long-term debt, current portion	25,300	52,122
Total current liabilities	1,942,297	4,477,543
Long-term debt, net of current portion	33,200	34,304
Hillgrove advances payable	0	756,147
CARES Act note payable	0	443,400
Stock payable to directors for services	166,250	110,000
Asset retirement obligations and accrued reclamation costs	293,451	291,719
Total liabilities	2,435,198	6,113,113
Stockholders' equity:
Common stock, $0.01 par value, 150,000,000 shares authorized; 106,005,234 and 75,949,757 shares issued and outstanding, respectively	1,060,051	759,496
Additional paid-in capital	63,883,227	39,050,899
Accumulated deficit	(32,649,141)	(32,650,794)
Total stockholders' equity	32,320,925	7,186,389
Total liabilities and stockholders' equity	34,756,123	13,299,502
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