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Miner running a continuous mining machine.
Two miners work with a machine to undercut coal.
Miner works with cutting machine at Jamison No. 9 mine.
Two miners work with a cutting machine at Pursglove No. 15.
Caption on back reads, 'Making a cut in the coal face is this Mastodon of the machine age - an underground cutter.  Rubber tired for mobility, and mounting a 9-foot cutting blade armed with whirring steel bits, it can cut a full 360 degree arc.  This and similar machines give America's bituminous coal mines almost unlimited capacity for production.'