# HANDLING OF MATERIALS
> MSHA accident `220173000028` · 10/20/2017 · Martin Marietta Northern California Aggregates,LLC
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** HANDLING OF MATERIALS
- **Accident type:** Over-exertion in pulling or pushing objects
- **Occupation:** Laborer, Blacksmith, Bull gang, Parts runner, Roustabout, Pick-up man, Pitman
- **Activity:** Machine maintenance
- **Injury source:** METAL COVERS & GUARDS
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** BACK (MUSCLES/SPINE/S-CORD/TAILBONE)
- **Days lost:** 0
- **Mine experience:** 9.96 years
## Operator
- **Controller:** Heidelberg Materials AG
- **Operator:** Martin Marietta Northern California Aggregates,LLC
- **Mine:** [0400159](https://api.ai-analytics.org/mine/0400159)
## Narrative

Injured employee examined what needed to be cleaned on the transfer screen to move the gates. EE was in a squatting position and barred the material that was stopping the gates from moving. In the squatting position EE grabbed the chute opening with hands out and when EE pulled self up EE felt a sharp pain in back and a popping sound.

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