Synonyme wurden verwendet für:
Bergbau
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keywords:(Bergbau)
Underground haulage with locomotives and mine cars
Belt pulls shuttle car output up 7 percent grade at Standard
Shuttle cars in room-and-pillar block retreat panel system
Shuttle car gathering studies of layout, method and performance
Strip mine converts to automotive haulage
Lancashire man-riding haulage practice
Maintenance of haulways for safety
Automatic track-brake system for man-haulage
Aerial tramway is transportation link at Pond Creek
Entry driving with cable reel shuttle cars
Bituminous strippers install shovels and draglines and adopt larger automotive haulage units