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Photo from WVU College of Mineral and Energy Resources Scrapbook.

25. Coal Train Approaching Mine Entrance Tunnel

Photo from WVU College of Mineral Resources Scrapbook

26. Koppers Coal Company Layer-Loading Practices Showing Comparison with Conventional Loading

Photo from WVU College of Mineral Resources Scrapbook

27. Diagram of Coal Preparation Plant Equipment

Photo from WVU College of Mineral Resources Scrapbook

28. Graph of Complaints Against Houston Collieries Company Since 1930

Photo from WVU College of Mineral Resources Scrapbook.  Three unidentified men standing outside.

29. Three Men Standing Outside

Photo from WVU College of Mineral Resources Scrapbook.

30. Four Unidentified Men

Photo from WVU College of Mineral Resources Scrapbook. Three unidentified men standing outside Clark Hall, WVU.

31. Three Men Outside Clark Hall

Photo from WVU College of Mineral Resources Scrapbook. Photo of three unidentified men standing outside.

32. Three Men

Photo from WVU College of Mineral Resources Scrapbook

33. Fusion Furnace and Testing Equipment

Photo from WVU College of Mineral Resources Scrapbook

34. Mining Equipment

Photo from WVU College of Mineral Resources Scrapbook

35. Coal Mine Preparation Plant

Photo from WVU College of Mineral Resources Scrapbook

36. Entrance to Valley Camp Coal Mine with Overheaed Conveyor