Consolidated Balance Sheets - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 82,942	$ 133,543
Certificates of deposit	251,641	250,414
Accounts receivable, net of $4,031 allowance for doubtful accounts	671,851	422,673
Inventories	905,702	1,094,238
Other current assets	264,835	235,458
Total current assets	2,176,971	2,136,326
Properties, plants and equipment, net	15,949,236	16,030,333
Restricted cash for reclamation bonds	76,012	76,012
Other assets	32,520	17,530
Total assets	18,234,739	18,260,201
Current liabilities:
Accounts payable	1,730,610	1,629,972
Due to factor	107,964	13,782
Accrued payroll, taxes and interest	288,670	221,446
Other accrued liabilities	215,673	141,545
Payables to related parties	43,949	32,396
Deferred revenue	78,730	78,730
Note payable to bank	126,505	130,672
Income tax payable	12,000	0
Long-term debt, current portion, net of discount	332,211	181,287
Total current liabilities	2,936,312	2,429,830
Long-term debt, net of discount and current portion	1,530,225	1,717,745
Hillgrove advances payable	1,177,971	1,254,846
Common stock payable to directors for services	75,000	137,500
Asset retirement obligations and accrued reclamation costs	263,054	260,327
Total liabilities	5,982,562	5,800,248
Commitments and contingencies (Note 6)
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 $909,375 and $907,500, 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 $5,014,692 and $4,879,029, respectively)	17,509	17,509
Common stock, $0.01 par value, 90,000,000 shares authorized; 66,866,278 and 66,316,278 shares issued and outstanding, respectively	668,662	663,162
Additional paid-in capital	36,022,733	35,890,733
Accumulated deficit	(24,466,006)	(24,120,730)
Total stockholders' equity	12,252,177	12,459,953
Total liabilities and stockholders' equity	$ 18,234,739	$ 18,260,201