# MACHINERY
> MSHA accident `220130940030` · 03/21/2013 · Granite Rock Company
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** MACHINERY
- **Accident type:** Struck against a moving object
- **Occupation:** Front-end loader, Scraper-loader operator, Pan operator, Payloader, Scraper rig operator
- **Activity:** Bulldozer
- **Injury source:** SURFACE MINING MACHINES
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** BACK (MUSCLES/SPINE/S-CORD/TAILBONE)
- **Days lost:** 0
- **Mine experience:** 1.42 years
## Operator
- **Controller:** Thomas H  Squeri
- **Operator:** Granite Rock Company
- **Mine:** [0403177](https://api.ai-analytics.org/mine/0403177)
## Narrative

While operating D-8 dozer, moving in reverse, dozer dropped unexpectedly on uneven terrain, jolting injured worker.  Injured worker felt pain in lower back.

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