# MACHINERY
> MSHA accident `220132550035` · 09/06/2013 · Quikrete Construction Materials, LLC
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY 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:** METAL,NEC(PIPE,WIRE,NAIL)
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** THIGH/FEMUR
- **Days lost:** 0
- **Mine experience:** 5.5 years
## Operator
- **Controller:** Cementos Argos S A
- **Operator:** Quikrete Construction Materials, LLC
- **Mine:** [0100629](https://api.ai-analytics.org/mine/0100629)
## Narrative

A mobile maintenance employee was performing a maintenance task.  He was splitting the track on a D9T3 Dozer to remove the left front Idler for rebuild.  As he was removing the bolts from the scissor joint, (4 bolts) the joint came apart causing him to over extend his hamstring.

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