# STEPPING OR KNEELING ON OBJECT
> MSHA accident `220091050011` · 01/28/2009 · Four Corners Materials
## Details
- **Degree of injury:** NO DYS AWY FRM WRK,NO RSTR ACT
- **Classification:** STEPPING OR KNEELING ON OBJECT
- **Accident type:** Rubbed or abraded
- **Occupation:** Outside foreman, Leadman
- **Activity:** Crawling, Kneeling
- **Injury source:** GROUND
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** 0
- **Mine experience:** 34 years
## Operator
- **Controller:** CRH PLC
- **Operator:** Four Corners Materials
- **Mine:** [2901258](https://api.ai-analytics.org/mine/2901258)
## Narrative

Employee was changing liners on the K400 cone and had to crawl under the crusher several times to inspect liner seats and other things. Employee was wearing 2 pair of coveralls and knee pads to protect his knees.

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