Interim inventory and assessment of abandoned mineral lands in the National Park system

Abandoned mines and mercury in California : oversight field hearing before the Subcommittee on Energy and Mineral Resources of the Committee on Natural Resources, U.S. House of Representatives, One Hundred Eleventh Congress, first session, November 23, 2009, in Sacramento, California

Cleanup at inactive and abandoned mines : issues in "Good Samaritan" legislation in the 114th Congress

Abandoned mined lands : innovative solutions for restoring the environment, improving safety, and creating jobs : oversight hearing before the Subcommittee on Energy and Mineral Resources of the Committee on Natural Resources, U.S. House of Representatives, One Hundred Twelfth Congress, first session, Thursday, July 14, 2011

Bonding for reclaiming federal lands

Mining law reform hearing before the Committee on Energy and Natural Resources, United States Senate, One Hundred Eleventh Congress, first session, to receive testimony on S. 796, Hardrock Mining and Reclamation Act of 2009 and S. 140, Abandoned Mine Reclamation Act of 2009, July 14, 2009

Surface coal mining financial assurances for, and long-term oversight of, mines with valley fills in four appalachian states : report to congressional requesters

Seeking innovative solutions for the future of hardrock mining : oversight hearing before the Subcommittee on Energy and Mineral Resources of the Committee on Natural Resources, U.S. House of Representatives, One Hundred Fifteenth Congress, first session, Thursday, July 20, 2017

The Abandoned Mine Reclamation Fund : issues and legislation in the 116th Congress

EPA's Animas spill : joint oversight hearing before the Committee on Natural Resources, U.S. House of Representatives, and the Committee on Oversight and Government Reform, One Hundred Fourteenth Congress, first session, Thursday, September 17, 2015