Mining Incidents

OSHOTO MINE Metal/Non-Metal

Upton, Weston County, WY  ·  Intermittent
MSHA Mine ID: 4801376

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Fatalities
0
Total incidents
7
Years on record
2003–2022
Latest incident
Feb 2022
Compliance record
MSHA citations since 2006
70
citations
8
significant & substantial
$11,433
proposed penalties
$11,411
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 1,328 0 0 0.0
2025 Q3 2,286 0 0 0.0
2025 Q2 1,638 0 0 0.0
2024 Q1 3,555 3 0 843.9
2023 Q4 2,952 0 0 0.0
2023 Q1 3,245 0 0 0.0
2021 Q4 1,708 0 0 0.0
2021 Q3 3,305 2 0 605.1
Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
No fatalities recorded at this mine.

Reportable incidents

7 on file

2022 · 1 incident

February 21, 2022 WY · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer POWERED HAULAGE
Black Hills Bentonite · Struck against stationary object

employee hit head on inside of cab in a 627G scraper and on 2/25/22 went to clinic to be checked out for concussion like symptoms. employee states they were wearing seatbelt when the rough road caused the contact. the Provider prescribed pain killers and released the employee to return to work on 2/28/2022

2018 · 1 incident

July 5, 2018 WY · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer POWERED HAULAGE
Black Hills Bentonite · Struck against a moving object

Employee was operating a scraper stripping overburden, when the scraper seat bottomed out during a bump and an injury to the groin occurred. The Employee noticed the pain, but did not think it was report able at the time. After a couple days the worsening of the condition led the employee to contact the supervisor on 7/7/2018.

2014 · 1 incident

October 17, 2014 WY · Metal/Non-Metal scraper-loader operator HANDLING OF MATERIALS
Black Hills Bentonite · Over-exertion (Not Elsewhere Classified)

Employee was getting out of the scraper when he slipped off the step and hurt his shoulder.

2012 · 2 incidents

March 30, 2012 WY · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer POWERED HAULAGE
Black Hills Bentonite · Struck against a moving object

EE tore muscle in right shoulder when arm was jerked from arm rest while trying to dig a rock out of a mine pit during a scraper operation. EE has missed no work previously but now has surgery scheduled for July 5, 2012 due to recurring pain. No work will be missed prior to surgery.

March 5, 2012 WY · Metal/Non-Metal bulldozer operator, universal operator, heavy equipment operator, operating engineer MACHINERY
Black Hills Bentonite · Struck against a moving object

EE was operating a 627G scraper when he hit a rough spot in the road and strained his lower back. Taken to hospital via pickup truck.

2008 · 1 incident

February 8, 2008 WY · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator POWERED HAULAGE
Black Hills Bentonite · Struck against a moving object

EE was operating a scraper when a rock spun out from under his left tire, causing his head to make contact with top of cab frame. This action jammed his neck and back. After several days his condition did not improve and has now resulted in lost time.

2003 · 1 incident

March 10, 2003 WY · Metal/Non-Metal front-end loader, scraper-loader operator, pan operator, payloader, scraper rig operator POWERED HAULAGE
Black Hills Bentonite · Struck against a moving object

WHILE OPERATING A SCRAPER, EE RAN OVER A ROCK WHILE RESTING HIS HAND BEHIND THE CONTROL PANEL. THIS CAUSED HIS RIGHT SHOULDER TO BE JERKED AND INJURED. HE TOOK A FEW DAYS OFF TO RECUPERATE AND VISITED A LICENSED NURSE PRACTITIONER FOR TREATMENT.