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1“...U.S. Dept. of the Interior, Bureau of Mines,...”
Government Document Book -
2by Touseull, Jack“...U.S. Dept. of the Interior, Bureau of Mines,...”
Published 1980
Government Document Book -
3Published 1978“...Bureau of Mines, U.S. Dept. of the Interior,...”
Government Document Serial -
4Ground subsidence and structural damage over an abandoned room-and-pillar coal mine at Hegeler, IL /Published 1986“...U.S. Dept. of the Interior, Bureau of Mines,...”
Government Document Book -
5by Powell, Larry R.“...U.S. Dept. of the Interior, Bureau of Mines,...”
Published 1988
Government Document Book