Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Note on sinking of 350-ft vertical air shaft at East Gulf, W Va; pre-grouting was done through three core drill holes, placed 30 in. outside shaft dimensions; excavation started Nov 1 1938; cycle of operations of two shifts per day was continued six days per week and shaft was completed Jan 23 1939; 13,500 man-hours were worked.
Note on sinking of 350-ft vertical air shaft at East Gulf, W Va; pre-grouting was done through three core drill holes, placed 30 in. outside shaft dimensions; excavation started Nov 1 1938; cycle of operations of two shifts per day was continued six days per week and shaft was completed Jan 23 1939; 13,500 man-hours were worked.
Shaft sinking record in West Virginia
Mechanization
Yates, W.M. (Autor:in)
Mechanization ; 4
1940
Aufsatz (Zeitschrift)
Englisch
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| Engineering Index Backfile | 1902
| Tema Archiv | 2013
| Engineering Index Backfile | 1948
| Engineering Index Backfile | 1948