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Primary view of Timbering of Metal Mines
Holbrook, Elmer Allen; Ageton, Richard V. & Tufft, Harry E.
June 1923
Primary view of Coal-Dust Explosion Tests in the Experimental Mine 1913-1918, Inclusive
Rice, George S.; Jones, Lewis M.; Egy, Willard Leo & Greenwald, H. P.
June 1922
Primary view of Petroleum Investigations and Production of Helium
Manning, Van. H.
June 1919
Primary view of Rock Quarrying for Cement Manufacture
Bowles, Oliver
June 1918
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