Back to the resource library Millsite Opinion – Leshy November 7, 1997 Author(s): Millsite Opinion – Leshy Download Limitations on Patenting Millsites under the Mining Law of 1872 See All Related Resources Minimizing Mining Impacts on the Road to Zero Emissions Transport CERTIFIED GASLIGHTING: Fact Sheet CERTIFIED GASLIGHTING: How gas certification has gained a policy foothold, even as it fails to prove it can accurately detect emissions Earthworks 2024 Campaign Plan