Mining methods, with particular regard to materials-handling equipment, including railroad cars, conveyors, etc.
Large-scale production in Rhenish lignite mining
Die Grossraumfoerderung im rheinischen Braunkohlenbergbau
V.D.I. Zeitschrift ; 75 , n 43
1931
6 pages
4 Figs.
Article (Journal)
German
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