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Two men using large bits to drill prior to placing charges.

13. Drilling Prior to Placing Charges

14. Coal Loading Machine

Two men working on the loading machine.

15. Coal Loading Machine in Operation at Jamison Mine No. 9

16. Coal on Conveyor

17. Miner Operating a Coal Loading Machine

18. Making a Cut in Coal Face Prior to 'Shooting Down' Coal

Two men working with a rubber tire mounted cutting machine.

19. Miners Operating a Cutting Machine

20. Miner Operates a Coal Cutting Machine Prior to Blasting

21. Miners Operating a Cutting Machine

Two miners cut coal at Pursglove No. 15

22. Miners Operating a Cutting Machine in Pursglove No. 15 Mine

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.'

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

Two miners operate a track mounted coal cutting machine.

24. Track Mounted Cutting Machine