# MACHINERY
> MSHA accident `220150750003` · 03/10/2015 · St. Marys Cement U.S. LLC
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** MACHINERY
- **Accident type:** Over-exertion in pulling or pushing objects
- **Occupation:** Laborer, Blacksmith, Bull gang, Parts runner, Roustabout, Pick-up man, Pitman
- **Activity:** Hand tools (powered)
- **Injury source:** DRIL-PRCUSV,HRD ROC,JKHMR
- **Nature of injury:** UNCLASSIFIED,NOT DETERMED
- **Body part:** BACK (MUSCLES/SPINE/S-CORD/TAILBONE)
- **Days lost:** 3
- **Mine experience:** 0.02 years
## Operator
- **Controller:** VOTORANTIM CIMENTOS
- **Operator:** St. Marys Cement U.S. LLC
- **Mine:** [1100118](https://api.ai-analytics.org/mine/1100118)
## Narrative

The ground was damp & muddy. The employee was using a jackhammer to clean out the screens on the Southwest side of the plant, when the jackhammer got stuck in the mud. The employee attempted to pull it out. As he was pulling, he heard his back pop.

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