Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Resume of roof support methods used in coal mines
Methods of roof support that can be employed under so-called " normally poor-roof" conditions; use of temporary and permanent types of conventional supports, mining shields, yielding type supports, roof bolting, yielding arches and roof bonding.
Resume of roof support methods used in coal mines
Methods of roof support that can be employed under so-called " normally poor-roof" conditions; use of temporary and permanent types of conventional supports, mining shields, yielding type supports, roof bolting, yielding arches and roof bonding.
Resume of roof support methods used in coal mines
Mechanization
Barry, A.J. (Autor:in)
Mechanization ; 27
1963
4 pages
Aufsatz (Zeitschrift)
Englisch
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