Minimizing fire hazards in coal mines by proper circuit-breaker protection of 250/275-volt direct-current systems
By: by F.J. Gallagher.
Contributors: United States. Bureau of Mines.
Series: Information circular (United States. Bureau of Mines) -- 7624
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1951
Place of publication: Washington, DC
Language: eng
Number of pages: 11
Subjects: Coal mines and mining -- Fires and fire prevention.
Notes: 1