# FALL OF ROOF OR BACK
> MSHA accident `220041770014` · 06/18/2004 · Hecla Greens Creek Mining 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:** 0
- **Mine experience:** — years
## Operator
- **Controller:** Rio Tinto Group
- **Operator:** Hecla Greens Creek Mining Company
- **Mine:** [5001267](https://api.ai-analytics.org/mine/5001267)
## Narrative

A round was shot in 209 stope and a wedge fell from the back when the ground supporting it was shot. The section of ground that failed was a remnant pillar nose left over from mining the 224 lift above.  The pillar nose was bounded on three sides by cemented tailings backfill and was 12'Lx15'Wx10'D, beyond length of 6' rockbolts.

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