Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities
Net income (loss)	$ (234)	$ (15)
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation, depletion and amortization	70	46
Other current and non-current assets	362	(124)
Accounts payable and other liabilities	(158)	(7)
Net cash provided by (used) in operating activities	40	(100)
Cash flows from investing activities
Fixed asset additions		(69)
Investment in mineral rights		(7)
Net cash provided by (used in) investing activities		(7)
Cash flows from financing activities
Payment on notes payable	(23)	(24)
Net cash provided by (used in) financing activities	(23)	(24)
Net increase (decrease) in cash and cash equivalents	17	(186)
Cash and cash equivalents at beginning of year	22	361
Cash and cash equivalents at end of period	39	175
Supplemental disclosures of cash flow information
Cash paid for principal on notes payable	$ 15	$ 15