# FALL OF ROOF OR BACK
> MSHA accident `220120730005` · 02/24/2012 · Mammoth Coal Co
## 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:** 0
- **Mine experience:** — years
## Operator
- **Controller:** Alpha Natural Resources, Inc.
- **Operator:** Mammoth Coal Co
- **Mine:** [4609148](https://api.ai-analytics.org/mine/4609148)
## Narrative

Unplanned roof fall occurred on #17 conveyor belt line at #47 crosscut and adjacent neutral entry. Fall in belt entry approx. 100' X 20' wide X 6-8' high. In neutral airway was approx. 400' X 20' X 6-8' high. No injuries or entrapment or equipment involved. No ventilation involved. Escape way and travel way were blocked.

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