Sealing of abandoned anthracite coal mines : hearings before the Subcommittee on Mines and Mining of the Committee on Interior and Insular Affairs, House of Representatives, Eighty-seventh Congress, on H.R. 4094 and H.R. 7054, bills to amend the act of July 15, 1955, relating to the conservation of anthracite coal resources; H.R. 5356, a bill to provide for a program of Federal financial aid to the state of Pennsylvania for the purpose of assisting such state in projects of filling certain abandoned mining operations for the protection of the public health and safety, for the conservation of natural resources, and for other purposes. April 10 and May 9, 1961, and January 31, 1962.
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Format: | Government Document Book |
Language: | English |
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Washington, DC :
United States Government Printing Office,
1962.
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