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Bergbau
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Underground photography as aid to accident prevention
Underground haulage with locomotives and mine cars
Underground haulage by locomotives
Transportation problem solved with belt conveyors
Track-mounted surge cars speed entry development
Track brakes for man-riding vehicles
Track brakes for man-riding vehicles
Strip mine converts to automotive haulage
Spacing of sets on endless haulages
Some experiences with diesel underground supplies vehicles
Solid tires on shuttle cars cut operating costs