Synonyme wurden verwendet für:
Bergbau
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keywords:(Bergbau)
Battery power for shuttle cars
Marysville: Northern diggings' base
Trolley wire locomotive haulage
Trolley wire locomotive haulage
We sliced cost of handling in half
Use of trolleyphones speeds mainline haulage
Mainline grading work coordinated with entry development
Economical entry driving with duckbills
Three-axle trucks transport overburden and coal
Shuttle cars in room-and-pillar block retreat panel system
Underground haulage with locomotives and mine cars
Extraction of stoops by shuttle cars and loaders