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37. Conveyor Belt Inside a Coal Mine

38. Coal Mining Machinery

39. Conveyor Belt Inside a Coal Mine

'1. Tractor Trailer Unit over Dump. 2. Main line 30"x1000' Conveyor. 3. Junction point 30" Conveyors. 4. Tractor trailer dump over belt.'

40. Views of Coal Transport Equipment in Blue Bird Company Mine, Carrier Mills, IL

41. Conveyor Belt Mechanism Inside a Coal Mine

42. Conveyor Belt Mechanism Inside a Coal Mine

43. Coal on a Conveyor Belt Inside a Mine

44. Men at Work Outside at Truax Traer Coal Company, Elkville, IL

45. Truax Traer Coal Company Mine, Elkville, IL

46. Miner at Work Underground in a Low Ceiling Coal Mine

47. Miners Enter a Low Ceiling Mine on an Electric Cart

48. Miner on an Electric Cart