# SLIP OR FALL OF PERSON
> MSHA accident `220120450011` · 02/09/2012 · Bentonite Performance Minerals LLC
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Over-exertion NEC
- **Occupation:** Bulldozer operator, Universal operator, Heavy equipment operator, Operating engineer
- **Activity:** Walking, Running
- **Injury source:** GROUND
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 23
- **Mine experience:** 32 years
## Operator
- **Controller:** Halliburton Company
- **Operator:** Bentonite Performance Minerals LLC
- **Mine:** [4800889](https://api.ai-analytics.org/mine/4800889)
## Narrative

Employee was walking across level ground at camp site and he felt and heard his knee pop. He had immediate discomfort and could not bear all his weight on leg. We were first aiding employee but on 2/13/2012 he went lost time after clinic evaluation.

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