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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.'

7. Miners Operating a Cutting Machine at Mine No. 32, Consolidation Coal Company, Owings, W. Va.

Two miners work with a cutting machine at Pursglove No. 15.

8. Miners Operating a Cutting Machine at Pursglove No. 15

Miner works with cutting machine at Jamison No. 9 mine.

9. Cutting Machine at Jamison No. 9

Man operating a JMC1 continuous miner.

10. Joy Manufacturing Company Continuous Mining Machine

Mountaineer Coal Company, Division of Consolidation Coal Company.

11. Continuous Mining Machine (Middle) and Loading Machine (Bottom)

Men at work with loading machine and shuttle car. Probably Joy Machinery.

12. Miners Operating a Loading Machine