# FALL OF ROOF OR BACK
> MSHA accident `220101020024` · 04/01/2010 · Armstrong Coal Company Inc
## Details
- **Degree of injury:** DAYS AWAY FROM WORK ONLY
- **Classification:** FALL OF ROOF OR BACK
- **Accident type:** Struck by falling object
- **Occupation:** Roof bolter, Rock bolter,  Pinner, Mobile roof support operator (MRS)
- **Activity:** Roof bolter, NEC
- **Injury source:** CAVING ROCK,COAL,ORE,WSTE
- **Nature of injury:** SPRAIN,STRAIN RUPT DISC
- **Body part:** ANKLE
- **Days lost:** 5
- **Mine experience:** 0.38 years
## Operator
- **Controller:** Armstrong Energy Inc
- **Operator:** Armstrong Coal Company Inc
- **Mine:** [1518552](https://api.ai-analytics.org/mine/1518552)
## Narrative

A rock measuring 45"" W x48"" L x2"" Thick fell (approximately 46"") from between roof bolts. Upon impacting the mine floor, the rock rolled inward with the outer edge striking the employee's right ankle.

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