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Permissible mine equipment approved during 1957-58

Permissible mine equipment approved by the Bureau of Mines during 1959-60 :with appended lists of manufacturers of flame-resistant trailing cables and fire-resistant conveyor belts and holders of permits

Permissible mine equipment approved by the Bureau of Mines during 1965-66 :a supplement to Bulletin 543 and Information circulars 8220 and 8299

Permissible mine equipment approved by the Bureau of Mines during 1967-68 :a supplement to Bulletin 543 and Information circulars 8220, 8299, and 8372

Published Year

• 1960-1969 (3)
• 1970-1979 (1)

Subject

• Mine safety (4) *
• Mining machinery (4)

Author

• Lee, F. R. (4) *
• Gleim, E. J. (1)
• Kearns, R. A. (1)

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