Mines are operated in No. 5 vein in central Illinois; coal is 5 to 6 ft thick and lies 230 to 250 ft below surface; roof conditions; cutting machines; room advance system; drilling and blasting; shuttle cars used are of 42 D type, with capacity 5 tons; changing storage batteries on shuttle cars. Abstract of paper before Am Min Congress Apr 1942.
Shuttle car operation with tractor loaders at peabody coal co
Min Congress J
Mining Congress Journal ; 28 , n 6
1942
2 pages
Article (Journal)
English
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