# STEPPING OR KNEELING ON OBJECT
> MSHA accident `220143160008` · 11/03/2014 · Heidelberg Materials Northeast LLC
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** STEPPING OR KNEELING ON OBJECT
- **Accident type:** Struck against stationary object
- **Occupation:** Laborer, Blacksmith, Bull gang, Parts runner, Roustabout, Pick-up man, Pitman
- **Activity:** Walking, Running
- **Injury source:** STEPS
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 8.42 years
## Operator
- **Controller:** Heidelberg Materials AG
- **Operator:** Heidelberg Materials Northeast LLC
- **Mine:** [3600091](https://api.ai-analytics.org/mine/3600091)
## Narrative

While descending the stairs in the tertiary plant one of the treads broke free causing the ee to sprain his right knee. The employee was treated and returned to restricted duty.

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