# FALL OF ROOF OR BACK
> MSHA accident `220021650043` · 06/04/2002 · 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

ROOF FALL IN THE 7 LEFT RETURN MEASURING APPROX 10' HIGH 30' LONG BY 18' WIDE WAS FOUND ON THE WEEKLY EXAMINATION. FALL WAS ATTRIBUTED TO WATER DETERIATION OF THE PERMANENT SUPPORTS AND AIR SL ACK IN ROOF STRATA. STRATA WAS MADE UP OF SHALE ROCK AND SANDSTONE. SUPPORT ANCHOR ZONE WAS IN THE SANDSTONE AREA OF THE ROOF.

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