Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Revolutionary roof support by steel rods drilled through weak strata or anchored in solid rockbed above; steel wedges and bearing plates lighten assembly; head room and clearance space are increased; promoted by U S Bureau Mines; methods used are illustrated by photographs, with explanatory captions. From paper before Min Soc Nova Scotia.
Revolutionary roof support by steel rods drilled through weak strata or anchored in solid rockbed above; steel wedges and bearing plates lighten assembly; head room and clearance space are increased; promoted by U S Bureau Mines; methods used are illustrated by photographs, with explanatory captions. From paper before Min Soc Nova Scotia.
Roof bolting
Can Min Met Bul
Thomas, E. (Autor:in)
1950
9 pages
Aufsatz (Zeitschrift)
Englisch
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| Engineering Index Backfile | 1953
| Engineering Index Backfile | 1952
| Engineering Index Backfile | 1951
| Engineering Index Backfile | 1957
Roof-bolting Delaware aqueduct
| Engineering Index Backfile | 1953