# STEPPING OR KNEELING ON OBJECT
> MSHA accident `220203500021` · 04/15/2020 · River Cement Company dba Buzzi Unicem USA
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** STEPPING OR KNEELING ON OBJECT
- **Accident type:** Struck against stationary object
- **Occupation:** Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech
- **Activity:** Walking, Running
- **Injury source:** METAL,NEC(PIPE,WIRE,NAIL)
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 51
- **Mine experience:** 5.04 years
## Operator
- **Controller:** Buzzi S p A
- **Operator:** River Cement Company dba Buzzi Unicem USA
- **Mine:** [2300188](https://api.ai-analytics.org/mine/2300188)
## Narrative

While walking down a grade beside a conveyor EE slipped on a mill ball. EE lost balance and caught self with the same leg twisting R knee. EE felt knee pop. EE immediately reported this to supervisor. EE did not see a doctor until May 11 when knee pain was still present. On November 5 MRI revealed cartilage tear and had surgery on December 8.

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