Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Notes on experience with shafts at Mather Colliery near Brownsville, Pa; spalling of concrete lining of downcast shafts presumed to be due to freezing of moisture on face of lining during winter months; description of relining operation which made repairs unnecessary during 12 yr; other shafts have been lined or repaired in similar manner.
Notes on experience with shafts at Mather Colliery near Brownsville, Pa; spalling of concrete lining of downcast shafts presumed to be due to freezing of moisture on face of lining during winter months; description of relining operation which made repairs unnecessary during 12 yr; other shafts have been lined or repaired in similar manner.
Intake shaft protected against frost
Coal Age
Dunbar, F.B. (Autor:in)
Coal Age ; 43
1938
2 pages
Aufsatz (Zeitschrift)
Englisch
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Intake shaft protected against frost
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