# FALL OF ROOF OR BACK
> MSHA accident `220021370026` · 03/20/2002 · Knox Creek Coal Corporation
## 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:** Massey Energy Company
- **Operator:** Knox Creek Coal Corporation
- **Mine:** [4406804](https://api.ai-analytics.org/mine/4406804)
## Narrative

A ROOF FALL OF APPROXIMATE DIMENSION 50' X 20' X10' HIGH OCCURRED IN THE NO 3 ENTRY OF THE NO 4 MAINS RETURN AIR COURSE AT SURVEY STATION NO 677. THE AREA HAD PREVIOUSLY BEEN BOLTED WITH 4' RE SIN BOLTS.

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