# SLIP OR FALL OF PERSON
> MSHA accident `220203420001` · 11/28/2020 · Thunder Basin Coal Company LLC
## Details
- **Degree of injury:** DYS AWY FRM WRK & RESTRCTD ACT
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Fall down stairs
- **Occupation:** Quality control technician, Laboratory technician, Laboratory assistant
- **Activity:** Walking, Running
- **Injury source:** STEPS
- **Nature of injury:** UNCLASSIFIED,NOT DETERMED
- **Body part:** KNEE/PATELLA
- **Days lost:** 32
- **Mine experience:** 4.69 years
## Operator
- **Controller:** Arch Resources Inc
- **Operator:** Thunder Basin Coal Company LLC
- **Mine:** [4800977](https://api.ai-analytics.org/mine/4800977)
## Narrative

Employee reports EE was carrying a sample of approximately 50lbs down the stairs. EE's foot missed a step and EE fell forward.

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