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Kohle
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Western Coal Transportation: Unit Trains or Slurry Pipelines
Vollautomatische Streckenfoerderanlage fuer ein Steinkohlenbergwerk in Oberschlesien
Untersuchung zur Ermittlung der Schaufelradantriebsleistung bei Kohle- und Erzlagern. Teil II
Unit train loading systems - reclaimer selection and wagon weighing
Underground transportation in coal mines
Underground haulage with locomotives and mine cars
Underground haulage with locomotives and mine cars
Track brakes for man-riding vehicles
Tonnage raised by adoption of shuttle-car gathering
Todd installation for pulverized coal
Todd installation for pulverized coal