# MACHINERY
> MSHA accident `220001430126` · 05/17/2000 · Martin Marietta Materials Inc
## Details
- **Degree of injury:** NO DYS AWY FRM WRK,NO RSTR ACT
- **Classification:** MACHINERY
- **Accident type:** Over-exertion NEC
- **Occupation:** Laborer, Blacksmith, Bull gang, Parts runner, Roustabout, Pick-up man, Pitman
- **Activity:** Double jack
- **Injury source:** BELT CONVEYORS
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** KNEE/PATELLA
- **Days lost:** —
- **Mine experience:** 3.96 years
## Operator
- **Controller:** Martin Marietta Materials Inc
- **Operator:** Martin Marietta Materials Inc
- **Mine:** [0901035](https://api.ai-analytics.org/mine/0901035)
## Narrative

EE WAS STANDING ON CONVEYOR #5 TRYING TO REMOVE THE ROCK THAT WAS WEDGED IN THE BACK FEEDER OF THE SECONDARY TUNNEL. HE WAS REMOVEING THE ROCK THAT WAS WEDGED IN THE BACK FEEDER WITH A JACK HA MMER. WHEN HE TURNED, HE SLIPPED ON LOOSE ROCKS, CAUSING HIS KNEE TO TWIST.

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