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Primary view of Method and Cost of Dredging Sand and Gravel by the Ohio River Sand Co., Louisville, Kentucky
Duffy, J. Hamilton
January 1931
Primary view of Coal Reserves of the Boltsfork Quadrangle, Kentucky: A Coal Recoverability Study
Rohrbacher, Timothy J.; Teeters, Dale D.; Sullivan, Gerald L. & Osmonson, Lee M.
1994
Primary view of Thickness of Bituminous Coal and Lignite Seams Mined in the United States in 1945
Young, W. H. & Anderson, R. L.
December 1947
Primary view of Annual Report of Research and Technologic Work on Coal: Fiscal Year 1941
Fieldner, Arno Carl & Schmidt, L. D.
November 1941
Primary view of Review of State Mine Inspector's Reports as They Relate to Accidents from Falls of Roof
Paul, James Washington
April 1929
Primary view of Safety Cars of the United States Bureau of Mines
Forbes, J. J. & Ankeny, M. J.
March 1931
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