# SLIP OR FALL OF PERSON
> MSHA accident `220261620004` · 05/31/2026 · Thunder Basin Coal Company LLC
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Fall to the walkway or working surface
- **Occupation:** Laborer, Blacksmith, Bull gang, Parts runner, Roustabout, Pick-up man, Pitman
- **Activity:** Walking, Running
- **Injury source:** GROUND
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** UPPER ARM/HUMERUS
- **Days lost:** —
- **Mine experience:** 11.77 years
## Operator
- **Controller:** Core Natural Resources Inc
- **Operator:** Thunder Basin Coal Company LLC
- **Mine:** [4800977](https://api.morvs.ai/mine/4800977)
## Narrative

Employee was walking down the boarding ladder of haul truck when EE slipped and injured EE's arm trying to catch self.  Dr. appointment on 06/03/26 confirmed bicep tear.

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*Source: [MSHA Open Government Data](https://arlweb.msha.gov/OpenGovernmentData/) · MORVS · CC0 1.0*