Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Shaft to be widened was sunk to depth of 564 yd; to 351 yd, diameter was 8 ft; it then belied out to 12 ft diameter in length of 40 ft, and for remaining distance to bottom was 12 ft; there was inset at depth of 326 yd; plan was to widen shaft to 12 ft diameter up to this inset; description of method used. Student paper before North Staffordshire Inst Min Engrs.
Shaft to be widened was sunk to depth of 564 yd; to 351 yd, diameter was 8 ft; it then belied out to 12 ft diameter in length of 40 ft, and for remaining distance to bottom was 12 ft; there was inset at depth of 326 yd; plan was to widen shaft to 12 ft diameter up to this inset; description of method used. Student paper before North Staffordshire Inst Min Engrs.
Example of shaft widening
Colliery Guardian
Stephens, F. (Autor:in)
Colliery Guardian ; 156
1938
2 pages
Aufsatz (Zeitschrift)
Englisch
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