# FALL OF ROOF OR BACK
> MSHA accident `220142270026` · 08/14/2014 · Canyon Fuel Company LLC
## Details
- **Degree of injury:** ACCIDENT ONLY
- **Classification:** FALL OF ROOF OR BACK
- **Accident type:** Accident type, without injuries
- **Occupation:** —
- **Activity:** —
- **Injury source:** —
- **Nature of injury:** —
- **Body part:** —
- **Days lost:** —
- **Mine experience:** — years
## Operator
- **Controller:** Wolverine Fuels LLC
- **Operator:** Canyon Fuel Company LLC
- **Mine:** [4201566](https://api.ai-analytics.org/mine/4201566)
## Narrative

Longwall downshift crew was moving power. While moving the power center out of crosscut 14, several rock props were inadvertently knocked out. Before crew could reset rock props, the roof took weight and fell. Area that fell was approximately 20 feet wide, 20 feet long, and maximum of 4 foot high. This area during advancement had been bolted with 7 foot rebar, resin grouted bolts.

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