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The mining of thin-coal seams as applied to the eastern coal-fields of Canada
Kellock Brown, J. F. - 1917
Persistent link: https://www.econbiz.de/10002235508
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Competition in the Midwestern coal industry
Moyer, Reed - 1964
Persistent link: https://www.econbiz.de/10013382840
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Untersuchungen zu den Kosten- und Marktproblemen der westeuropäischen Kohlenwirtschaft
Wiel, Paul - 1953
Persistent link: https://www.econbiz.de/10013333699
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Remote control and automation of mining operations
1966
Persistent link: https://www.econbiz.de/10014413461
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Ergebnisse der Gewinnungsmechanisierung im westdeutschen Steinkohlenbergbau
1964
Persistent link: https://www.econbiz.de/10000152995