Browse TRAIL Inventories

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

Subject

Author