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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.'

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

Two miners operate a track mounted coal cutting machine.

14. Track Mounted Cutting Machine

A gear driven cutting machine stands on the track.

15. Very Old Track Mounted Cutting Machine

Two miners operate the breast type coal cutting machine.

16. Breast Type Coal Cutting Machine, Consol Mine No. 26, Watson, W. Va.

Two men operating a loading machine.

17. Loading Machine in Action at Mine No. 32

18. Joy Manufacturing Company Continuous Mining Machine

Man cutting coal in Consol. Coal Co. Mine in Kentucky. Note the roof supports using jacks.

19. Miner Cutting Coal in Consol Mine in Kentucky

Two men cutting coal in the parting.

20. Cutting Coal with Cavalier

21. Cutting Coal Preparatory to Shooting It Down for Loading

A miner operating a coal cutting machine.

22. Coal Miner at Work

Miner on a small, track mounted, cutting machine.

23. Miner Operating a Small, Track Mounted, Cutting Machine

Miners at work with loading machine and shuttle car.

24. Miner Operating a Loading Machine