CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023
Revenue:
Sale of metals (Note 15)			$ 4,217
Total revenue			4,217
Costs and expenses:
Cost of metals sold (exclusive of depreciation shown below) (Note 15)			(4,046)
Exploration expense		$ (467)	(1,339)
El Quevar project expense		(139)	(151)
Administrative expense		(1,046)	(1,331)
Stock-based compensation		(73)	(189)
Other operating income, net		11	13
Depreciation and amortization		(23)	(4)
Total costs and expenses		(1,737)	(7,047)
Loss from operations		(1,737)	(2,830)
Other income (expense):
Interest and other income, net		15	2
(Loss) gain on foreign currency transactions		(25)	18
Total other (expense) income		(10)	20
Loss from operations before income taxes and discontinued operations		(1,747)	(2,810)
Loss from continuing operations		(1,747)	(2,810)
Loss from discontinued operations, net of taxes		(2,818)	(456)
Net loss		$ (4,565)	$ (3,266)
Net loss per common share - basic
Continuing operations		$ (0.12)	$ (0.40)
Discontinued operations	[1]	(0.20)	(0.07)
Net loss per common share - basic (in dollars per share)	[2]	$ (0.32)	$ (0.47)
Weighted-average shares outstanding - basic (in shares)	[3]	14,186,223	6,889,610

[1] (1) Reflects the one-for-25 reverse stock split that became effective June 9, 2023. Refer to Note 1, Basis of Preparation of Financial Statements and Nature of Operations.

[2] Reflects the one-for-25 reverse stock split that became effective June 9, 2023. Refer to Note 1, Basis of Preparation of Financial Statements and Nature of Operations.

[3] Potentially dilutive shares have not been included for loss periods because to do so would be anti-dilutive. Potentially dilutive shares at March 31, 2024, consist of 440,409 equivalent shares related to stock compensation and 10,819,742 equivalent shares related to warrants outstanding. Potentially dilutive shares at March 31, 2023, consist of 420,409 equivalent shares related to stock compensation and 392,155 equivalent shares related to warrants outstanding. See Note 14 for a discussion of stock-based compensation and warrants.