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Men in hard hats stand in front of giant shovel scoop.

1. Hanna Coal Company Tour Group in Shovel Scoop

Miner running a continuous mining machine.

2. Continuous Mining Machine

3. Loading Machine Discharges Coal into Shuttle Car

4. Visitors Standing in Scoop of Hanna Coal Company's Tiger Shovel

Miners drill two or more holes into coal to place the explosive charges.

5. Drilling Prior to Setting Explosives

Two dogs harnessed to coal carts. About 1890, Ohio Coal Mine. This photograph is the property of Pittsburgh Consolidation Coal Co.

6. Dogs in Harness, Ohio Coal Mine

Miners at work. 'Mountaineer Coal Co., Division of Consolidation Coal Co.'

7. Miners Working with Loading Machine

Mountaineer Coal Company, Division of Consolidation Coal Company.

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

9. Ireland Mine Shamrock Portal Warehouse

Rimbol, Apthorpe(E.O.G.); Pallister, Tom (Case); Pigott, Conway (Stl. Imp); A, William (Case).

10. Visitors Pose with Hanna Coal Company's Mountaineer Shovel

George Knowles, Bill McCartney in picture.

11. Tour of Hanna Coal Company Mine Site, Cadiz, Ohio

'Westinghouse, Cleveland.' Dick MacFarlane is one person in the picture.

12. Visitors Pose with Hanna Coal Company's Mountaineer Shovel

'Chas. Huber-Steel Improve.'

13. Visitors Pose with Hanna Coal Company's Mountaineer Shovel

14. Miner Testing for Gas at Consol. No. 32 Mine

Frank Morovan and three others stand next to a Hanna Coal Co. giant shovel scoop.

15. Tour of Hanna Coal Company Mine Site, Cadiz, Ohio

People standing by 2 of the Mountaineers 8'8'' crawlers (Cats).

16. Visitors Pose with Hanna Coal Company's Mountaineer Shovel

Three men stand in scoop of giant shovel. 'Bert Butler, Dia Alk.'

17. Hanna Coal Company Tour Group in Shovel Scoop

18. Miner Testing for Gas in Jamison No. 9 Mine

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

19. Cutting Machine at Jamison No. 9

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

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

21. Interior of Mathies Underground Machine Shop

22. Mechanic Working in the Mathies Underground Machine Shop

Two miners working to support the roof in the Itmann Coal Co. mine. <br /><br />

23. Miners at Work in an Itmann Coal Company 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.'

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