# FALL OF ROOF OR BACK
> MSHA accident `220152520003` · 09/02/2015 · 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:** —
- **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 occurred in the #6 and #7 (intake) entry along the Northwest Mains (4 belt) at break #12, one break inby SS #9042. This fall was 6000 feet from active workings. The fall measured 20 feet L x 140 feet W x 8 to 10 feet tall. Ventilation was not affected, passage of persons was affected.

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