Permissible mine equipment approved by the Bureau of Mines during 1967-68: a supplement to Bulletin 543 and Information circulars 8220, 8299, and 8372
by F. R. Lee
A concise historical reference listing mine equipment approved by the Bureau of Mines during 1967–68. This supplement extends Bulletin 543 and Information Circulars 8220, 8299, and 8372.
About This Book
This publication records mine equipment approved by the Bureau of Mines during 1967–68.
It is identified as a supplement to Bulletin 543 and Information Circulars 8220, 8299, and 8372.
Focused on permissible mine equipment, the volume provides a dated reference for technical and historical research.
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