# FALL OF ROOF OR BACK
> MSHA accident `220021540011` · 05/30/2002 · Sterling Mining 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:** W Thomas  Mackall
- **Operator:** Sterling Mining Corporation
- **Mine:** [3304229](https://api.ai-analytics.org/mine/3304229)
## Narrative

ROOF FALL #4 ENTRY (BELT ENTRY) B-18 TO OUTBY B-20 #1 R+SUBMAIN OFF OF G-LEFT SUBMAIN ONE BREAK OUTBY FACE, FALL OCCURRED AFTER SECTION WAS BEING ABANDONED DUE TO ADVERSE ROOF CONDITIONS, FALL STARTED BY CLAY VEIN, ROOF WAS SHOWING BROKEN CONDITIONS DUE TO ROLLING COAL SEAM AND OVERHEAD STREAM VALLEY PARALLEL TO FALL DIRECTION.

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