Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Hydraulic mining of coal is under experimental studies in open pit mining where hydraulic monitors with approximate weight of 440 lb are used; coal is carried away by stream of water to point where oscillating screen separates it and discharges it into tubs; acting factor is gravity so that coal seam must have dip of 3°. English abstract.
Hydraulic mining of coal is under experimental studies in open pit mining where hydraulic monitors with approximate weight of 440 lb are used; coal is carried away by stream of water to point where oscillating screen separates it and discharges it into tubs; acting factor is gravity so that coal seam must have dip of 3°. English abstract.
Testing underground hydraulic mining and transportation of coal in Polish coal mines
Les essais d'abatage et de transport hydrauliques au fond dans les houilleres polonaises
Frey, H. (Autor:in)
1958
15 pages
Aufsatz (Zeitschrift)
Französisch
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