Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experience to date shows that mine roof sealing, where successful, is definitely beneficial in saving both material and labor.
Experience to date shows that mine roof sealing, where successful, is definitely beneficial in saving both material and labor.
Conserving labor by preventing roof falls
Min Congress J
Smith, F.G. (Autor:in)
1943
Aufsatz (Zeitschrift)
Englisch
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Preventing accidents from falls of roof or coal
| Engineering Index Backfile | 1930
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