# HANDLING OF MATERIALS
> MSHA accident `220150720021` · 02/17/2015 · Martin Marietta Northern California Aggregates LLC
## Details
- **Degree of injury:** NO DYS AWY FRM WRK,NO RSTR ACT
- **Classification:** HANDLING OF MATERIALS
- **Accident type:** Over-exertion in lifting objects
- **Occupation:** Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech
- **Activity:** Machine maintenance
- **Injury source:** METAL COVERS & GUARDS
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** SHOULDERS (COLLARBONE/CLAVICLE/SCAPULA)
- **Days lost:** 0
- **Mine experience:** 8 years
## Operator
- **Controller:** Heidelberg Materials AG
- **Operator:** Martin Marietta Northern California Aggregates LLC
- **Mine:** [0405261](https://api.ai-analytics.org/mine/0405261)
## Narrative

The employee was changing out a screen from a manbasket, when they tried to remove the screen over a bar, which caused a strain to the left shoulder.

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