# FALL OF ROOF OR BACK
> MSHA accident `220121080005` · 04/16/2012 · 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:** [4609108](https://api.ai-analytics.org/mine/4609108)
## Narrative

Unplanned roof fall occurred at bottom of slope #4 entry at spad #206 track entry. The fall was approximately 30 ft. long x 18-19 ft. wide x 15 ft. high. No injuries or entrapment or equipment involved. No ventilation involved. Secondary escapeway blocked and it was changed around the fall.

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