Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Known history of roof bolting review and recommendations of Bureau of Mines regarding techniques of installing roof bolts; drilling; methods of tightening and anchoring bolts; dust hazard in drilling for roof bolting. (See also U S Bur Mines -- Information 7583 Sept 1950 8 p)
Known history of roof bolting review and recommendations of Bureau of Mines regarding techniques of installing roof bolts; drilling; methods of tightening and anchoring bolts; dust hazard in drilling for roof bolting. (See also U S Bur Mines -- Information 7583 Sept 1950 8 p)
Roof bolting in United States
Min J (Lond)
Thomas, E. (Autor:in)
Mining Journal (London) ; 235
1950
2 pages
Aufsatz (Zeitschrift)
Englisch
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| Engineering Index Backfile | 1950
Roof bolting at United States and lark mine
| Engineering Index Backfile | 1952
| Engineering Index Backfile | 1953
| Engineering Index Backfile | 1957
| Engineering Index Backfile | 1951