# MACHINERY
> MSHA accident `220123180070` · 11/09/2012 · SCS Materials LP
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** MACHINERY
- **Accident type:** Struck by falling object
- **Occupation:** Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech
- **Activity:** Hand tools (powered)
- **Injury source:** MOTORS
- **Nature of injury:** DISLOCATION
- **Body part:** SHOULDERS (COLLARBONE/CLAVICLE/SCAPULA)
- **Days lost:** 0
- **Mine experience:** 0.38 years
## Operator
- **Controller:** Summit Materials LLC
- **Operator:** SCS Materials LP
- **Mine:** [3401950](https://api.ai-analytics.org/mine/3401950)
## Narrative

Employee was in process of unbolting a hydraulic motor on the Plant to replace it.  With 2 bolts remaining the motor unexpectedly began to fall.  The employee caught the 80 pound motor with the top of the impact wrench causing it to jolt his right shoulder.

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