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Approval of newly developed self-contained breathing apparatus, instructions in its care and use, and training procedure

Outcrop and underground mine fires in Allegeny County, Pa.

Published Year

• 1940-1949 (2)

Subject

• Mine fires--Pennsylvania--Allegheny County (1)
• Mine safety--Equipment and supplies (1)
• Mine safety--Pennsylvania--Allegheny County (1)

Author

• Grove, G. W. (2)
• Quenon, E. E. (2) *

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