A miner was turning a pipe with a pipe wrench in one hand, and their other hand on the top of the pipe where an elbow was located. The pipe turned faster than the miner expected, and the miners thumb got caught in the elbow, bending it back.
Bonanza Process Plant Metal/Non-Metal
Watch this mine
Email me when a new MSHA incident is filed at Bonanza Process Plant.
- Fatalities
- 0
- Total incidents
- 5
- Years on record
- 2023–2025
- Latest incident
- Oct 2025
Compliance record
MSHA citations since 2020
37
citations
1
significant & substantial
$5,552
proposed penalties
$5,099
paid to date
Source: MSHA violations data, updated weekly.
Quarterly safety rates
Citations per million employee-hours, as reported to MSHA
| Quarter | Hours worked | Citations | S&S | Per 1M hrs |
|---|---|---|---|---|
| 2025 Q4 | 10,012 | 0 | 0 | 0.0 |
| 2025 Q3 | 10,492 | 0 | 0 | 0.0 |
| 2025 Q2 | 7,836 | 4 | 0 | 510.5 |
| 2025 Q1 | 7,153 | 2 | 0 | 279.6 |
| 2024 Q4 | 9,240 | 0 | 0 | 0.0 |
| 2024 Q3 | 11,161 | 6 | 1 | 537.6 |
| 2024 Q2 | 11,699 | 0 | 0 | 0.0 |
| 2024 Q1 | 12,068 | 0 | 0 | 0.0 |
Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
No fatalities recorded at this mine.
Reportable incidents
5 on file2025 · 3 incidents
American Gilsonite Company · Caught in, under or between (Not Elsewhere Classified)
American Gilsonite Company · Caught in, under or between a moving and a stationary object
A miner was conducting an inspection on an agitator. As the agitator turned, a bolt contacted the miner's finger, resulting in lacerations.
August 26, 2025
UT · Metal/Non-Metal
maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech
HANDTOOLS (NONPOWERED)
American Gilsonite Company · Struck by... (Not Elsewhere Classified)
A miner was stripping electrical wires with a utility knife. The knife came out of the insulation as the miner pulled it down and came into contact with EE's right wrist, cutting the arm.
2024 · 1 incident
March 27, 2024
UT · Metal/Non-Metal
haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver
STRIKING OR BUMPING
American Gilsonite Company · Struck against stationary object
Employee was changing to go home. Took sock off, stood up and hit head on open locker door.
2023 · 1 incident
September 29, 2023
UT · Metal/Non-Metal
maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech
HANDLING OF MATERIALS
American Gilsonite Company · Caught in, under or between a moving and a stationary object
Heavy ring fell forward while being removed, employee tried to stop it and pinched a finger between two pieces of metal.