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Preventing accidents from falls of roof or coal
Discussion of underground conditions, with particular reference to bituminous coal mines in Pennsylvania, by representative of company manufacturing mines safety appliances; good results accomplished by compliance with rules as published in U. S. Bureau of Mines Information Cir., no. 6053.
Preventing accidents from falls of roof or coal
Discussion of underground conditions, with particular reference to bituminous coal mines in Pennsylvania, by representative of company manufacturing mines safety appliances; good results accomplished by compliance with rules as published in U. S. Bureau of Mines Information Cir., no. 6053.
Preventing accidents from falls of roof or coal
Min. Congress Jl
Muir, N.L. (author)
1930
2 pages
Article (Journal)
English
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Reducing accidents from falls of roof in coal mines
Engineering Index Backfile | 1930
|Reducing accidents from falls of roof in coal mines
Engineering Index Backfile | 1930
|Reducing accidents from falls of roof in coal mines
Engineering Index Backfile | 1930
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|Control of roof and prevention of accidents from falls of rock and coal
Engineering Index Backfile | 1948
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