# SLIP OR FALL OF PERSON
> MSHA accident `220102390012` · 08/10/2010 · Thunder Basin Coal Company LLC
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Over-exertion NEC
- **Occupation:** Bulldozer operator, Universal operator, Heavy equipment operator, Operating engineer
- **Activity:** Getting on or off equipment
- **Injury source:** SURFACE MINING MACHINES
- **Nature of injury:** FRACTURE,CHIP
- **Body part:** ANKLE
- **Days lost:** 0
- **Mine experience:** 11.44 years
## Operator
- **Controller:** Arch Resources Inc
- **Operator:** Thunder Basin Coal Company LLC
- **Mine:** [4800977](https://api.ai-analytics.org/mine/4800977)
## Narrative

The operator was descending a stairway from the cab of a shovel. As he stepped down to the lower walkway, his ankle rolled over.  He was first seen by a doctor on 8/20.  A follow up x-ray on 8/24 confirmed a fractured fibula.

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