# FALL OF FACE/RIB/PILLAR/SIDE/HIGHWALL
> MSHA accident `220073170027` · 10/30/2007 · Canyon Fuel Company LLC
## Details
- **Degree of injury:** ACCIDENT ONLY
- **Classification:** FALL OF FACE/RIB/PILLAR/SIDE/HIGHWALL
- **Accident type:** Accident type, without injuries
- **Occupation:** —
- **Activity:** —
- **Injury source:** —
- **Nature of injury:** —
- **Body part:** —
- **Days lost:** 0
- **Mine experience:** — years
## Operator
- **Controller:** Arch Resources Inc
- **Operator:** Canyon Fuel Company LLC
- **Mine:** [4200089](https://api.morvs.ai/mine/4200089)
## Narrative

A cave in the gob behind the shields of the 2LEM longwall (MMU001) occurred that impaired ventilation by blowing down 2 curtains. This was corrected by re-hanging the 2 curtains in  the intake entries. Further evaluation revealed that the floor heaved and material fell from the ribs into the tailgate walkway and escapeway. The material in the escapeway impeded passage.

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