Back to the resource library Udall Bill Revenue Estimate February 26, 2003 Author(s): Udall Bill Revenue Estimate Download How the Abandoned Hardrock Mines Reclamation Act would fund clean up of abandoned mines on a state by state basis. See All Related Resources 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 Remining for the Energy Transition