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Roof bolting
Advantages of roof bolting; bolting patterns, materials, and installation equipment described; description of roof bolting at Dominion No. 20 Colliery and Four Star mine.
Roof bolting
Advantages of roof bolting; bolting patterns, materials, and installation equipment described; description of roof bolting at Dominion No. 20 Colliery and Four Star mine.
Roof bolting
Can Min Met -- Bul
Dwarkin, L.M. (author) / Doxey, F. (author) / Johnston, J.C. (author)
1951
9 pages
Diagrams, photographs, Bibliography
Article (Journal)
English
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Engineering Index Backfile | 1953
|Engineering Index Backfile | 1952
|Engineering Index Backfile | 1950
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|Roof-bolting Delaware aqueduct
Engineering Index Backfile | 1953
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