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Walsum mine - technical details
1947
Persistent link: https://www.econbiz.de/10001534422
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The evolution towards the combined mine
1947
Persistent link: https://www.econbiz.de/10001534424
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The technique of mining in the Ruhr
Fritche, C. H. - 1947
Persistent link: https://www.econbiz.de/10001534425
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Franz Haniel mine
1948
Persistent link: https://www.econbiz.de/10001534427
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Organisation and layout of underground faces in flat and medium formations in the Ruhr
Glebe, H. - 1947
Persistent link: https://www.econbiz.de/10001534428
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A study of efforts to increase face outputs
Glebe, Ernest - 1947
Persistent link: https://www.econbiz.de/10001534429
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The development of face production : [summary of lecture]
Vogel, Walter - 1947
Persistent link: https://www.econbiz.de/10001534431
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Safety protection for coal face lighting circuits
Grummer, A. - 1947
Persistent link: https://www.econbiz.de/10001534432
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The introduction and development of plough loaders in the Ruhr
Lange, Fritz - 1947
Persistent link: https://www.econbiz.de/10001534437
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Modern machines for coal extraction
Lange, Fritz - 1947
Persistent link: https://www.econbiz.de/10001534439