Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Underground metal and nonmetallic mineral mining
Output increased through rock breaking advances, use of Diesel locomotives increased underground, new hoisting methods, use of mechanical loaders underground, roof bolting, supports, and timber handling equipment.
Underground metal and nonmetallic mineral mining
Output increased through rock breaking advances, use of Diesel locomotives increased underground, new hoisting methods, use of mechanical loaders underground, roof bolting, supports, and timber handling equipment.
Underground metal and nonmetallic mineral mining
Min Congress J
1952
3 pages
Aufsatz (Zeitschrift)
Englisch
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