Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Problems of continuous mining machine; superiority of Kennametal cemented carbide for mining machine bits and drill bits; roof bolting methods as solution for timbering for continuous mining machines.
Problems of continuous mining machine; superiority of Kennametal cemented carbide for mining machine bits and drill bits; roof bolting methods as solution for timbering for continuous mining machines.
"Cemented carbide tipped bits"
Coal Min
Johnson, R.H. (Autor:in)
Coal Mining ; 27
1950
5 pages
Aufsatz (Zeitschrift)
Englisch
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