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Man sits by controls to loaded mine car.
"The miner is using a compressed-air drill to drive a hole in the lower edge of the working face of the coal vein."
Three miners work on a piece of machinery at Elkhorn, W. Va.
Miner running a continuous mining machine.
Two miners work with a cutting machine at Mine 206, Kentucky. 'This material is the property of the Consolidation Coal Co. and must be returned promptly to: Advertising Department, Consolidation Coal Company, 30 Rockefeller Plaza, New York, N.Y.
Two miners work with a machine to undercut coal.
Men at work with loading machine and shuttle car. Probably Joy Machinery.