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Bergbau
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keywords:(Bergbau)
Comparison of horse and benzine-locomotive haulage
The introduction of automobiles for mining work
An automatic signal system for crossovers on underground railways operated by electric locomotives
Switches for underground electric locomotive traction
Wirtschafts-statistisches Handbuch für Sowjetrußland
Face pressure and cleat in underground workings
Betriebskosten und Selbstkosten der Zechenbahnen
Application of compressed air in linite industry
Development of trackless transportation in Styrian Ersberg
Giant bucket wheel crawler excavator with carriage for 90-m height of cut
Transportation of material by underground suspension monorail railway
Trackless transportation in ore mine of Kiruna
Fahrwerke der kontinuierlich arbeitenden Tagebaugeraete
Transportation of pipes, long lumber, and rails in Friedrich Heinrich mine