Powder River Proppants, LLC · Struck against stationary object
Employee stepped on a nail. puncturing through EE's left boot into EE's left big toe.
Glenrock Mine 01 Metal/Non-Metal
Powder River Proppants, LLC
· Surface
Controlled by
BGD LLC; Founders of PRP LLC
Glenrock,
Converse County,
WY
·
Active
MSHA Mine ID: 4801891
Watch this mine
Email me when a new MSHA incident is filed at Glenrock Mine 01.
- Fatalities
- 0
- Total incidents
- 4
- Years on record
- 2025–2026
- Latest incident
- Jan 2026
Compliance record
MSHA citations since 2024
19
citations
5
significant & substantial
$2,691
proposed penalties
$1,192
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 | 12,996 | 4 | 1 | 307.8 |
| 2025 Q3 | 28,212 | 4 | 2 | 141.8 |
| 2025 Q2 | 300 | 0 | 0 | 0.0 |
| 2025 Q1 | 300 | 6 | 2 | 20000.0 |
| 2024 Q4 | 9,770 | 4 | 0 | 409.4 |
Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
No fatalities recorded at this mine.
Reportable incidents
4 on file2026 · 1 incident
2025 · 3 incidents
Powder River Proppants, LLC · Inhalation of radiations, caustics, toxic and noxious substances
Employee was welding wear iron on an excavator bucket when a wind shift reduced ventilation, leading to fume inhalation. The employee reported shortness of breath and chest pressure and received first aid on site before being transported to the ER. The employee was released the same day, cleared to return to work the next day, and diagnosed with airway irritation.
September 11, 2025
WY · Metal/Non-Metal
bulldozer operator, universal operator, heavy equipment operator, operating engineer
MACHINERY
Powder River Proppants, LLC · Struck against a moving object
Employee was Operating a haul truck being loaded by an excavator. Employee stated that the Excavator struck the haul truck on the back and caused an injury to Employees Neck/Back. Employee refused first aid and or urgent care. Employee later turned in medical paperwork to MSHA.
Powder River Proppants, LLC · Struck by falling object
The employee was removing/replacing the guard while the bucket elevator ran. The guard slipped into the opening, getting caught by moving buckets, causing the guard to slam down on employee's lower leg, causing a tibia and fibula fracture.