A WEEKLY MINE EXAMINER OBSERVED THE ROOF FALL IN A RETURN AIR COURSE. THE FALL MEASURED APPROX. 20'X20'X6' HIGH, LOCATED OUTBY THE FACE AT SPOT #632. NO BLOCKAGE OF VENTILATION, NO INJURIES ETC. DOUBLE LOCK ROOF BOLTS 7' & 8' WERE USED IN THIS AREA.
Mine No 64a Coal
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- Fatalities
- 0
- Total incidents
- 4
- Years on record
- 1993–1994
- Latest incident
- Jan 1994
Reportable incidents
4 on file1994 · 1 incident
1993 · 3 incidents
A ROOF FALL OCCURRED IN THE CROSSCUT BETWEEN NO.3 & NO.4 ENTRY ONE CROSS CUT INBY SPAD NO.613. THE FALL MEASURED 35 FEET LONG, 18 FEET WIDE AND 7' TO 8' HIGH. DOUBLE LOCK ROOF BOLTS 6' & 7' IN LENGTH WITH STRAPS ON 3X4' SPACING WAS USED.
AT APPROX 11:15PM A MINE EXAMINER HEARD A NOISE THAT APPEARED TO BE A ROOF FALL HIS EXAMINATION REVEALED THAT THE FACE OF #4 ENTRY HAD FALLIN FOR A DISTANCE OF APPROX 57FT THE AREA HAD BEEN B OLT ED WITH 60IN & 72IN ROOF BOLTS EXCEPT FOR 12FT IN THE IMMEDIATE FACE
EE WAS HANGING THE MINER CABLE AND GOT HIS HAND CAUGHT BETWEEN THE CABLE AND THE HANGER.