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Approved dust respirators for coal mines

Respirators approved by the Bureau of Mines as of May 24, 1972 :a revision of Information circular 8436

Published Year

• 1970-1979 (2) *

Subject

• Breathing apparatus (1)
• Mine dusts (1)
• Mine safety (1)
• Respirators (1)
• Respirators (Medical equipment) (1)

Author

• Schutz, Robert H. (2) *
• Kloos, E. J. (1)

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