# FALL OF ROOF OR BACK
> MSHA accident `220120520025` · 02/16/2012 · 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:** [4609221](https://api.ai-analytics.org/mine/4609221)
## Narrative

An unplanned roof fall above the anchorage zone occurred in the face of the #4 entry of the #1 section (MMU 002). The fall was approximately 50ft long x 18ft wide x 10ft high. No injuries or entrapment was involved. The Fletcher Roof Bolter was covered by the fall. The entry travelway was involved in fall and ventilation to face involved. No escape way was affected.

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