MSHA record for Mine No 64a (mine ID 4608236). Fatalities, non-fatal incidents grouped by year, current operator and controller, and mine context.
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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.
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.
A dated report covering the 26-year penalty trail, line-item violation pattern, contest and docket posture, rate-normalized peer benchmark, and full fatality history. Delivered as a PDF with the underlying data as CSV.