A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Timbering for safety in mechanical mining
Characteristics and limitations of single posts and crossbars; why and how of safety posts; late systems of protection against drawslate and other bad top, including forepoling possibilities.
Timbering for safety in mechanical mining
Characteristics and limitations of single posts and crossbars; why and how of safety posts; late systems of protection against drawslate and other bad top, including forepoling possibilities.
Timbering for safety in mechanical mining
Coal Age
Coal Age ; 50
1945
6 pages
Article (Journal)
English
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| Engineering Index Backfile | 1945