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Testimony before the Subcommittee on Energy and Power, Committee on Interstate and Foreign Commerce, U.S. House of Representatives
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Testimony before the Committee on Energy and Natural Resources, United States Senate
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Testimony before the Committee on Energy and Natural Resources, United States Senate
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Testimony before the Committee on Energy and Natural Resources, Subcommittee on Energy Conservation and Regulation, United States Senate
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Testimony before the Subcommittee on Energy Research and Natural Resources, Committee on Energy and Natural Resources, United States Senate
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Testimony before the Committee on the Budget, U.S. House of Representatives
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Testimony before the Subcommittee on Energy Research and Water Resources, Senate Committee on Interior and Insular Affairs