# FALL OF ROOF OR BACK
> MSHA accident `220112980037` · 10/24/2011 · 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:** [4609237](https://api.ai-analytics.org/mine/4609237)
## Narrative

An unplanned roof fall occurred, starting 2 breaks out by Survey Station 1632 of #2 Section between #1 and #7 entries and continuing to the section face. No injuries or entrapment involved, no ventilation involved. Secondary escapeway blocked. Fall was approximately 7 1/2 ft height x 20 1/2' wide x 40 ft. length.

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