Buch, John W.
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[Reports]. File № XXX-41 : Activities of the Westfalische Berggewerkschaftskasse during wartime, - Bochum ...
1946
1317
0
0
[Reports]. File № XXX-26 : Operation of compressed air shearing machines, mine Fürst Hardenberk, Gelsenkerken, B. A. G
1946
2066
0
0
Operation of compressed air shearing machines, mine Fürst Hardenberk, Gelsenkerken, B. A. G.
1946
762
0
0
Machinery for winning and loading of bituminous coal underground : Gebrüder Eickhoff Maschinenfabrik, Bochum
1946
1638
0
0
[Reports]. File № XXX-42 : Progress in design of the "Schalenden Gewinnungschinen (Kohlenhobel)
1946
1839
0
0
Progress in design of the "Schalenden Gewinnungschinen (Kohlenhobel) : Manufactures by Westfalia-Lunen
1946
1487
0
0
[Reports]. File № XXX-25 : The Brieden pneumatic packing machine, Karl Brieden & Co. Bochum-Ruhr
1946
2030
0
0
[Reports]. File № XXX-28 : Operation of the coal-planer, mine Hannover-Hannibal (Krupp). Essen-Ruhr
1946
588
0
0
Manufacture of Widia bits for chain coal-cutting machines, Widia (Krupp) tool works, Essen-Ruhr
1946
1737
0
0
[Reports]. File № XXX-39 : Manufacture of Widia bits for chain coal-cutting machines, Widia (Krupp) tool works, Essen-Ruhr
1946
1262
0
0
[Reports]. File № XXX-30 : Operation of pneumatic packing machine and scraper loader with planer
1946
1385
0
0
Mining method for a five foot seam, pitch 60° at mine Westhausen, Gelsenkerken, A. G., Dortmund-Ruhr
1946
850
0
0
[Reports]. File № XXX-40 : Present status of coal shearing machine design, Heinr. Korfmann jr.
1946
2938
0
0