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The Mining Regulatory Clarity Act would change how mining companies can use federal lands for activities supporting mining operations. Currently, a 2022 court decision requires mining companies to prove that land contains valuable minerals before using it for waste disposal or other support activities. This bill would reverse that requirement, allowing mining operators to use federal lands for ancillary activities like waste rock disposal regardless of whether those lands contain economically valuable minerals. The bill creates a new category of mill sites with a five-acre limit per site, though operators could claim multiple sites as needed.
The bill also establishes the Abandoned Hardrock Mine Fund, which would be funded through fees from mining claims and used to clean up abandoned mining sites. Supporters argue the bill provides regulatory certainty for mining companies and strengthens domestic mineral supply chains needed for national security and the energy transition. The bill passed the House in December 2025 with bipartisan support and is now being considered by the Senate.
Opponents raise concerns that the bill could allow mining companies to expand operations on public lands, including near national parks, without adequate environmental protections. They argue the 1872 Mining Law already gives mining companies extensive access to public lands and that this bill would further reduce oversight. Environmental groups worry that clarifying mining rights could lead to increased mining activity on sensitive public lands.
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Read twice. Placed on Senate Legislative Calendar under General Orders. Calendar No. 357.
Mar 17, 2026
Read twice. Placed on Senate Legislative Calendar under General Orders. Calendar No. 357.
Mar 17, 2026