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1. Mining Equipment at Fairmont Machinery Company

2. Mat Conveyor Built in the Shop at Thomas, W. Va.

3. Jeffrey Loading Machine Emptying Coal into a New 11-Ton Steel Mine Car at Mine No. 32

4. Interior of Mathies Underground Machine Shop

5. Mechanic Working in the Mathies Underground Machine Shop

The heating system is used for lamphouse, bathhouse, shop and warehouse.

6. Ireland Mine Shamrock Portal Automatic Coal-Fired Heating System

Consol. Coal Co. display at Hornes Dept. Store.

7. Consol Display at Horne's Department Store, Pittsburgh, Pa.

Mountaineer Coal Company, Division of Consolidation Coal Company.

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

This mock-up shows the new blade design being tested by the Bureau of Mines. The base of the blade is thicker and there is a strip of titanium carbide at the point of previous severe erosion. If used, please credit Bureau of Mines, U.S. Department of the Interior.During LDC's final 1,100-hour run, this rotor blade (arrow) was undercut by ash flowing  along the rotor past the tips of the stator blades. If used, please credit Bureau of Mines, U.S. Department of the Interior.

9. New Rotor Blade Design

This mock-up shows the new blade design being tested by the Bureau of Mines. The base of the blade is thicker and there is a strip of titanium carbide at the point of previous severe erosion. If used, please credit Bureau of Mines, U.S. Department of the Interior.During LDC's final 1,100-hour run, this rotor blade (arrow) was undercut by ash flowing  along the rotor past the tips of the stator blades. If used, please credit Bureau of Mines, U.S. Department of the Interior.

10. New Rotor Blade Design

11. Summerlee Hoisting Room, C. B. Lee, Engineer, at the Controller

Mechanic working on what appears to be a turbine.

12. Mechanic Working on Mining Machinery

'A small portion of the hot ash-laden gas stream entering the turbine is continuously removed by this ash-sampling unit. Data from the operation of this unit is analyzed to determine the concentration, size, and composition of the ash in the hot gases entering the turbine.'

13. Sampling Hot Ash-Laden Gas

Coal crushed to 3/16-inch by 0 is pumped to a pulverizer that grinds it to 90-per cent hrough 200-mesh. The product is mixed with air and burned in the combustors. Hot high-speed gas from the ash separators drives the turbine, air compressor, and electric generators. Exhaust from the turbine passes through a regenerator that preheats compressed air to the combustors. If used, please credit Bureau of Mines, U.S. Department of the Interior.

14. Schematic Diagram of Coal-Fired Gas Turbine

Modified longwall mining with a German coal planer. Progress report 2: Completion of mining in three adjacent panels in the Pocahontas No. 4 coal bed, Helen, W. Va; If this photograph is used for publication, please give credit to the Bureau of Mines, United States Department of Interior.

15. Wood Crib Constructed with Crib Releases

Man sits by controls to loaded mine car.

16. Man Sitting on Loaded Mine Car

17. Two Men with Track Mounted Cutting Machine

18. Two Men with Cutting Machine

19. Two Men with Cutting Machine

Three men working to fill a coal car.

20. Men Working with Loading Machine

21. Two Men working with Loading Machine

Two men travel through a narrow passageway in mine.

22. Two Men on Machine

Two men ride on engine hauling loaded coal cars out of mine/

23. Loaded Coal Cars

Two men ride on the engine hauling empty coal cars.

24. Men Riding on Coal Car Engine