# SLIP OR FALL OF PERSON
> MSHA accident `220201770020` · 06/11/2020 · Greenbrier Minerals, 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:** Timbering, Build cribs
- **Injury source:** MINE FLOOR,BOTTOM,FOOTWAL
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 2.17 years
## Operator
- **Controller:** Coronado Coal LLC
- **Operator:** Greenbrier Minerals, LLC
- **Mine:** [4609217](https://api.ai-analytics.org/mine/4609217)
## Narrative

EE was setting a timber in the No.5 belt entry. EE was in the process of tightening the timber with the use of a cap wedge. During this process the EE took a step back twisting the left knee. 

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