# FALL OF ROOF OR BACK
> MSHA accident `220223220002` · 11/07/2022 · Bronco Utah Operations, LLC.
## 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:** Bronco Coal Resources, LLC
- **Operator:** Bronco Utah Operations, LLC.
- **Mine:** [4200079](https://api.ai-analytics.org/mine/4200079)
## Narrative

An unplanned Roof Fall was found in the Intake Air Course of 3rd North, Intersection of Entry #9 & XC #7. It is approximately 20' wide by 20' long and 7' high. No one was injured or entrapped.  Ventilation was interrupted.  Preliminary diagnoses; Strata failure due to water saturating the upper mudstone band, causing it to swell and weakening the Roof Control.

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