# HANDLING OF MATERIALS
> MSHA accident `220021640017` · 05/29/2002 · U.S. Steel Mining Company, LLC
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** HANDLING OF MATERIALS
- **Accident type:** Struck by... NEC
- **Occupation:** Laborer, Bull gang, Faceman, Parts runner, Roustabout, Roof trimmer/scaler
- **Activity:** Machine maintenance
- **Injury source:** ROOF (ROCK) BOLTS
- **Nature of injury:** FRACTURE,CHIP
- **Body part:** JAW INCLUDE CHIN
- **Days lost:** 22
- **Mine experience:** 0.11 years
## Operator
- **Controller:** Usx Corp
- **Operator:** U.S. Steel Mining Company, LLC
- **Mine:** [0100851](https://api.ai-analytics.org/mine/0100851)
## Narrative

INJURED WAS HELPING TO REMOVE A LOCK PIN FROM SCOOP BATTERY LIFTING ARM. INJURED PUT A ROOF BOLT THRU THE LIFTING ARM EYE AND KNOCKED THE LOCK PIN OUT. WHEN THE LOCK PIN BECAME FREE, THE LIFTI NG ARM DROPPED. THIS CAUSED THE ROOF BOLT TO MOVE UPWARD STRIKING INJURED IN THE JAW.

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