# MACHINERY
> MSHA accident `220041000003` · 03/03/2004 · Mosaic Potash Carlsbad Inc
## Details
- **Degree of injury:** DAYS RESTRICTED ACTIVITY ONLY
- **Classification:** MACHINERY
- **Accident type:** Over-exertion NEC
- **Occupation:** Mason
- **Activity:** Hand tools (powered)
- **Injury source:** DRIL-PRCUSV,HRD ROC,JKHMR
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** SHOULDERS (COLLARBONE/CLAVICLE/SCAPULA)
- **Days lost:** 0
- **Mine experience:** 1 years
## Operator
- **Controller:** IMC Global Inc
- **Operator:** Mosaic Potash Carlsbad Inc
- **Mine:** [2900802](https://api.morvs.ai/mine/2900802)
## Narrative

Employee was jackhammering a concrete footing.  The footing had been excavated.  A piece of concrete the employee was hammering broke off causing the hammer to drop down into the excavation.  The employee stretched, partially tore, his trepezius muscle in his right shoulder.

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