Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Steel roof supports cut timbering costs at Nemacolin and Dehue mines
Illustrations and text describing development of experimental types of roof support, particularly for entries which must be kept open for many years; steel I beams supported by brick work and by steel pipe; posts of steel pipe are sometimes made in telescopic form and welded; steel arches in manway from slope bottom to shaft bottom; comparative cost data.
Steel roof supports cut timbering costs at Nemacolin and Dehue mines
Illustrations and text describing development of experimental types of roof support, particularly for entries which must be kept open for many years; steel I beams supported by brick work and by steel pipe; posts of steel pipe are sometimes made in telescopic form and welded; steel arches in manway from slope bottom to shaft bottom; comparative cost data.
Steel roof supports cut timbering costs at Nemacolin and Dehue mines
Coal Age
Hesse, A.W. (Autor:in)
Coal Age ; 44
1939
3 pages
Aufsatz (Zeitschrift)
Englisch
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Mechanization of timbering for roof supports
Engineering Index Backfile | 1929
Mechanization of timbering for roof supports
Engineering Index Backfile | 1929
Mechanization of timbering for roof supports
Engineering Index Backfile | 1929
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