CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Assets
Cash and cash equivalents	$ 139,033,696	$ 64,244,983
Other current assets	4,460,334	2,514,602
Total current assets	143,494,030	66,759,585
Property, plant and mine development, net	53,693,669	40,055,354
Other non-current assets	11,624,524	4,561,122
Equity investments in unconsolidated affiliates	64,233,609	58,872,710
Total assets	273,045,832	170,248,771
Liabilities and Stockholders’ Equity
Accounts payable	1,613,013	1,262,744
Accrued expenses	3,990,970	5,425,498
Current portion of long-term debt	504,855	762,189
Other current liabilities	29,906	99,587
Total current liabilities	6,138,744	7,550,018
Long-term debt, net of current portion	349,415	914,147
Total liabilities	6,488,159	8,464,165
Commitments and contingencies (Note 11)
Stockholders’ equity:
Common stock; $0.0001 par value, 100,000,000 shares authorized; 17,964,863, and 15,894,395, shares issued and outstanding at June 30, 2022, and December 31, 2021, respectively	1,796	1,589
Additional paid-in capital	378,789,754	255,131,836
Accumulated deficit	(111,418,935)	(92,683,000)
Accumulated other comprehensive loss	(814,942)	(665,819)
Total stockholders’ equity	266,557,673	161,784,606
Total liabilities and stockholders’ equity	$ 273,045,832	$ 170,248,771