# MACHINERY
> MSHA accident `220133570031` · 01/23/2013 · United States Steel Corp-Minnesota Ore Operations
## Details
- **Degree of injury:** NO DYS AWY FRM WRK,NO RSTR ACT
- **Classification:** MACHINERY
- **Accident type:** Struck against a moving object
- **Occupation:** Grader operator, Roadgrader operator
- **Activity:** Grader
- **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:** 15.71 years
## Operator
- **Controller:** USX Corp (United States Steel Corp)
- **Operator:** United States Steel Corp-Minnesota Ore Operations
- **Mine:** [2100282](https://api.ai-analytics.org/mine/2100282)
## Narrative

An employee was jarred inside his caterpillar 16H road grader while grading the lower II surface stockpile in the west pit.  The employee experienced lower back pain later on during the shift which he attributed to the jarring episode experienced earlier in the shift.

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