Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Investigation of mine roof deterioration
Paper discusses study made during past year relative to physical and chemical properties of shale roof rock overlying Sewell coal in mines of New River Coal Co, in Fayette and Raleigh Counties, W Va; types of roof; mining practice and roof action; possible causes and cure of roof deterioration.
Investigation of mine roof deterioration
Paper discusses study made during past year relative to physical and chemical properties of shale roof rock overlying Sewell coal in mines of New River Coal Co, in Fayette and Raleigh Counties, W Va; types of roof; mining practice and roof action; possible causes and cure of roof deterioration.
Investigation of mine roof deterioration
Min Congress J
McNary, H.B. (Autor:in)
1941
3 pages
Aufsatz (Zeitschrift)
Englisch
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