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Designs for air locks in shafts
Braunfeld, K. - 1947
Persistent link: https://www.econbiz.de/10001534463
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Mechanical decking of cages
Muller, Arnold - 1947
Persistent link: https://www.econbiz.de/10001534465
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Germania mine - central shaft
1947
Persistent link: https://www.econbiz.de/10001534466
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The efficient utilisation of shaft space
Schäfer, Hermann - 1947
Persistent link: https://www.econbiz.de/10001534468
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Utilisation of low grade fuels in steam generating plants
Vogel, Walter - 1947
Persistent link: https://www.econbiz.de/10001534473
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Reasons for changing the working voltage underground from 380 V to 500 V
Kellner, Carl - 1947
Persistent link: https://www.econbiz.de/10001534475
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The advantages of permanent coal face and roadway lighting
Passmann, Bernhard - 1947
Persistent link: https://www.econbiz.de/10001534479
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Production statistics for mines in flat, medium and steep formations
1948
Persistent link: https://www.econbiz.de/10001534480