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Equity (Tables)
12 Months Ended
Dec. 31, 2020
Equity [Abstract]  
Schedule of Stock by Class
Gross proceeds from and cash fees related to the issuance of shares of the Company's common stock pursuant to registered equity issuance and exempt private placement agreements, and conversion of preferred shares are presented below for the years ended December 31, 2020 and 2019:

20202019
Number of shares sold5,747,608 10,015,443 
Gross proceeds$4,197,621 $5,186,463 
Cash fees130,070 270,751 
Net proceeds$4,067,551 $4,915,712 
Average gross proceeds per share$0.73 $0.52 
Schedule of Reconciliation of Stock Based Transactions
Following is a reconciliation of stock-based transactions for the years ended December 31, 2020 and 2019:

20202019
Shares outstanding as of beginning of year27,236,489 15,067,655 
Shares issued for:
Equity issuance agreements5,747,608 5,941,670 
Issuance of common stock for convertible preferred— 2,240,441 
Private placement agreements— 1,833,332 
Reverse split fractional shares— 9,114 
Common stock issuance costs173,611 498,008 
Share contributions for mineral rights343,058 746,269 
Investment in Mercury Clean Up, LLC625,000 900,000 
Director compensation315,000 — 
Director restricted stock grants540,000 — 
                 Total shares issued7,744,277 12,168,834 
 Shares outstanding as of end of year34,980,766 27,236,489