A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Rock-dust barriers for coal mines
History and purpose of barriers; important characteristics of rock-dust barriers as a class; complete construction and installation details of three types which have been tested and are believed to be satisfactory for general use in coal mines; tests were conducted at experimental mine of U. S. Bureau of Mines, and construction blueprints can be obtained from Director of Bureau, at Washington, D. C. (See also U. S. Bur. Mines -- Reports of Investigations, serial no. 2977, Jan. 1930, 14 pp., 5 figs. on supp. plates)
Rock-dust barriers for coal mines
History and purpose of barriers; important characteristics of rock-dust barriers as a class; complete construction and installation details of three types which have been tested and are believed to be satisfactory for general use in coal mines; tests were conducted at experimental mine of U. S. Bureau of Mines, and construction blueprints can be obtained from Director of Bureau, at Washington, D. C. (See also U. S. Bur. Mines -- Reports of Investigations, serial no. 2977, Jan. 1930, 14 pp., 5 figs. on supp. plates)
Rock-dust barriers for coal mines
Colliery Guardian
Rice, G.S. (author) / Greenwald, H.P. (author) / Howarth, H.C. (author)
Colliery Guardian ; 141
1930
Bibliography
Article (Journal)
English
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