Tests of rock-dust barriers in the experimental mine
By: by George S. Rice, H.P. Greenwald and H.C. Howarth.
Contributors: Greenwald, Harold Putnam, 1893-; Howarth, Henry C., 1879-
Series: United States. Bureau of Mines. Bulletin ;; 353
Publisher: U.S. G.P.O.
Published: 1932
Place of publication: Washington
Language: eng
Number of pages: 81
Subjects: Mine explosions.; Coal mines and mining -- Safety measures.