# FALL OF ROOF OR BACK
> MSHA accident `220003610012` · 12/14/2000 · Canyon Fuel Company 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:** Arch Resources Inc
- **Operator:** Canyon Fuel Company LLC
- **Mine:** [4201566](https://api.ai-analytics.org/mine/4201566)
## Narrative

THE LONGWALL FACE HAD ADVANCED APPROXIMATELY 160FEET WITHOUT A SUBSTANTIAL CAVE. WHEN THE ROOF FRACTURED THE RESULTING CAVE WAS ASSOCIATED WITHAN AIRBLAST THAT DAMAGED UP TO 20 PERMANENT VENT ILATION CONTROLS WHICH HALTED MINING FOR NEARLY 24 HOURS.

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