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Kohle
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Western Coal Transportation: Unit Trains or Slurry Pipelines
Vollautomatische Streckenfoerderanlage fuer ein Steinkohlenbergwerk in Oberschlesien
Use of pulverized coal as steamship fuel
Use and handling of mine cars in british collieries
Untersuchung zur Ermittlung der Schaufelradantriebsleistung bei Kohle- und Erzlagern. Teil II
Unit train -- Planning, operating, financing
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