Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Pillar recovery under adverse roof conditions
Joint report by mechanical loading committee and roof action committee; Pillar Mining Under Medium Weak Roof, D. C. RIDENOUR; Mining Under Very Weak Roof, A. E. SPOTTI.
Pillar recovery under adverse roof conditions
Joint report by mechanical loading committee and roof action committee; Pillar Mining Under Medium Weak Roof, D. C. RIDENOUR; Mining Under Very Weak Roof, A. E. SPOTTI.
Pillar recovery under adverse roof conditions
Min Congress J
1948
4 pages
Aufsatz (Zeitschrift)
Englisch
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