Coal-mine ventilation factors
By: by H.P. Greenwald and G.E. McElroy.
Contributors: McElroy, George Edward, 1889-
Series: Bulletin (United States. Bureau of Mines) ;; 285
Publisher: U.S. G.P.O.
Published: 1929
Place of publication: Washington
Language: eng
Number of pages: 106
Subjects: Mine ventilation.; Coal mines and mining.
Notes: At head of title: Department of Commerce. William F. Whiting, secretary. Bureau of Mines. Scott Turner, director.
Includes index.