# FALL OF ROOF OR BACK
> MSHA accident `220010650030` · 02/21/2001 · United States Gypsum Company
## 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:** USG Corporation
- **Operator:** United States Gypsum Company
- **Mine:** [1300434](https://api.ai-analytics.org/mine/1300434)
## Narrative

CORE HOLE WAS DRILLED FROM SURFACE TO MINE. HOLE WAS USED TO COLLECT REQUIRED GEOLOGIC DATA FOR PROPOSED VENT SHAFT. HOLE COULD NOT BE IMMEDIATELY PLUGGED AND WATER FROM AQUAFIER ABOVE MINE SE AM LEAKED INTO STRATA ABOVE MINE SEAM. THE WEIGHT OF WATER RESULTED IN A ROOF FALL 30'W X 60'L X 10'H DIRECTLY WEST OF THE CORE HOLE.

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