Note 13 - Segment Reporting - Reconciliation of Revenue (Details) - USD ($)		3 Months Ended
		Mar. 31, 2026	Mar. 31, 2025
Revenues		$ 313,456	$ 785,815
Mining and Real Estate [Member]
Revenues		38,250	37,050
Recycling [Member]
Revenues		40,887
Decommissioning Services [Member]
Revenues		228,383	743,912
Off-take [Member]
Revenues		5,936	4,853
Metals Segment [Member]
Revenues		275,206	748,765
Metals Segment [Member] | Mining and Real Estate [Member]
Revenues		0	0
Metals Segment [Member] | Recycling [Member]
Revenues		40,887
Metals Segment [Member] | Decommissioning Services [Member]
Revenues		228,383	743,912
Metals Segment [Member] | Off-take [Member]
Revenues		5,936	4,853
Mining Segment [Member]
Revenues	[1]	33,750	32,250
Mining Segment [Member] | Mining and Real Estate [Member]
Revenues		33,750	32,250
Mining Segment [Member] | Recycling [Member]
Revenues		0
Mining Segment [Member] | Decommissioning Services [Member]
Revenues		0	0
Mining Segment [Member] | Off-take [Member]
Revenues		0	0
Strategic Investments Segment [Member]
Revenues		0	0
Strategic Investments Segment [Member] | Mining and Real Estate [Member]
Revenues		0	0
Strategic Investments Segment [Member] | Recycling [Member]
Revenues		0
Strategic Investments Segment [Member] | Decommissioning Services [Member]
Revenues		0	0
Strategic Investments Segment [Member] | Off-take [Member]
Revenues		0	0
Corporate Segment and Other Operating Segment [Member]
Revenues		4,500	4,800
Corporate Segment and Other Operating Segment [Member] | Mining and Real Estate [Member]
Revenues		4,500	4,800
Corporate Segment and Other Operating Segment [Member] | Recycling [Member]
Revenues		0
Corporate Segment and Other Operating Segment [Member] | Decommissioning Services [Member]
Revenues		0	0
Corporate Segment and Other Operating Segment [Member] | Off-take [Member]
Revenues		0	0
Bioleum Segment [Member]
Revenues		0	0
Bioleum Segment [Member] | Mining and Real Estate [Member]
Revenues		0	0
Bioleum Segment [Member] | Recycling [Member]
Revenues		0
Bioleum Segment [Member] | Decommissioning Services [Member]
Revenues		0	0
Bioleum Segment [Member] | Off-take [Member]
Revenues		$ 0	$ 0

[1] Mining segment - asset held for sale (see Note 6)