United States coal production and utilization : oversight hearings before the Subcommittee on Mines and Mining of the Committee on Interior and Insular Affairs, House of Representatives, Ninety-fifth Congress, second session ... hearings held in Washington, D.C., May 16 and 18, and July 27, 1978.
United States.Congress.House.Committee on Interior and Insular Affairs.Subcommittee on Mines and Mining.
Washington : U.S. Govt. Print. Off.,
1979.
"Serial no. 95-22."
Coal
Coal mines and mining