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While leaving the continuous miner enroute to the roof bolter to check on the roof bolting crew, I turned the corner and was struck on the back of head and neck driving me to the floor. The rock was approx. 4' x 2' x 12" tapering to 3". The coal seam being mined was approx. 4 ft.

No 7 Entry 12 by 18 - 3 1/2 to 4 ft high. Roof was working on 8-1 Build 9 - cribs - dangered off and drop no 7 entry.