VICTIM ENTERED A VERTICAL SHAFT THAT WAS BEING USED AS A WATER SUMP. SHAFT WAS 90\ DEEP 7\ 3" IN DIAMETER, CONTAINING 28\ OF WATER VICTIM WAS APPROX 15\ - 20\ DOWN THE LADDER,. WHEN HE APPAREN TLY LOST CONCIOUSNESS DUE TO A LACK OF OXYGEN AND FELL TO THE BOTTOM OF THE SHAFT
Keffler David K: 1 recorded fatality controller
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Top causes
- OTHER 1 fatality
- SLIP OR FALL OF PERSON 5 non-fatal
- HANDLING OF MATERIALS 2 non-fatal
- HANDTOOLS (NONPOWERED) 2 non-fatal
- POWERED HAULAGE 2 non-fatal
- FIRE 1 non-fatal
Incident timeline
Operators under this controller
Mines on record
Fatalities under this controller
1 recordedWhere Keffler David K stands on silica, penalties, and injury rate
MSHA's standard limits respirable silica to 50 micrograms per cubic metre, but MSHA publishes dust and quartz as separate files and never the silica figure itself. We derive it per sample, score it against the limit, and set the operator's injury rate against a benchmark built from the full MSHA operator record. With the 26-year penalty trail, contest posture, and fatality history. Delivered as a PDF with the underlying data as CSV.
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