# MACHINERY
> MSHA accident `220071930055` · 06/27/2007 · Northshore Mining Company
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** MACHINERY
- **Accident type:** Over-exertion NEC
- **Occupation:** Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech
- **Activity:** Hand tools (powered)
- **Injury source:** HAND TOOLS,POWERED,NEC
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** THIGH/FEMUR
- **Days lost:** 54
- **Mine experience:** 12 years
## Operator
- **Controller:** Cliffs Minnesota Minerals Company
- **Operator:** Northshore Mining Company
- **Mine:** [2100831](https://api.ai-analytics.org/mine/2100831)
## Narrative

Employee was removing bolts from mill with air hammer when he pulled a muscle in his right thigh.

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