# SLIP OR FALL OF PERSON
> MSHA accident `220193650005` · 12/20/2019 · Rockwell Mining LLC
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** SLIP OR FALL OF PERSON
- **Accident type:** Struck against stationary object
- **Occupation:** Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech
- **Activity:** Machine maintenance
- **Injury source:** METAL,NEC(PIPE,WIRE,NAIL)
- **Nature of injury:** CONTUSN,BRUISE,INTAC SKIN
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 0.5 years
## Operator
- **Controller:** Blackhawk Mining LLC
- **Operator:** Rockwell Mining LLC
- **Mine:** [4609377](https://api.ai-analytics.org/mine/4609377)
## Narrative

Employee slipped and hit right knee on bolt while working in grid box of 830E.  The employee spent the majority of the afternoon working in a crouched position in the grid box.  When they got up the knee was stiff, hurting and swollen.

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