Synonyme wurden verwendet für:
mining
Suche ohne Synonyme:
keywords:(mining)
Tonnage raised by adoption of shuttle-car gathering
More tons per man-hour with shuttle car haulage
Stripping employed to start recovery of 20,000 tons per acre
Efficient haulage depends on power distribution
Underground haulage with locomotives and mine cars
Supplies and repairs centralized
Shuttle cars handle output of Illinois mine
Strip mine converts to automotive haulage
Shuttle car gathering studies of layout, method and performance
Shuttle cars in block system; pillaring with development
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
Belt pulls shuttle car output up 7 percent grade at Standard