# HANDTOOLS (NONPOWERED)
> MSHA accident `220112520030` · 06/13/2011 · Materion Natural Resources
## Details
- **Degree of injury:** NO DYS AWY FRM WRK,NO RSTR ACT
- **Classification:** HANDTOOLS (NONPOWERED)
- **Accident type:** Over-exertion in pulling or pushing objects
- **Occupation:** Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech
- **Activity:** Hand tools (not powered)
- **Injury source:** WRENCH
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** SHOULDERS (COLLARBONE/CLAVICLE/SCAPULA)
- **Days lost:** 0
- **Mine experience:** 27.27 years
## Operator
- **Controller:** Materion Corporation
- **Operator:** Materion Natural Resources
- **Mine:** [4200706](https://api.ai-analytics.org/mine/4200706)
## Narrative

While closing a 3"" steam valve with a pipe wrench, in a sitting position using a pulling motion, strained the left shoulder.

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