# SLIP OR FALL OF PERSON
> MSHA accident `220170090028` · 12/20/2016 · 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:** Quality control technician, Laboratory technician, Laboratory assistant
- **Activity:** Walking, Running
- **Injury source:** GROUND
- **Nature of injury:** CONTUSN,BRUISE,INTAC SKIN
- **Body part:** CHEST (RIBS/BREAST BONE/CHEST ORGNS)
- **Days lost:** 6
- **Mine experience:** 1.15 years
## Operator
- **Controller:** Arch Resources Inc
- **Operator:** Thunder Basin Coal Company LLC
- **Mine:** [4800977](https://api.ai-analytics.org/mine/4800977)
## Narrative

Employee was spraying off front entrance to the prep bldg with air hose. Employee turned around to go inside and tripped over a 4/4 block of wood that was on the ground holding the door open. Employee returned to work with regular duty and then missed work beginning 12/30/16. 

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