# FALL OF ROOF OR BACK
> MSHA accident `220200830011` · 03/10/2020 · Resolution Copper Mining LLC
## 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:** RTZ Corp  PLC; BHP Billiton PLC
- **Operator:** Resolution Copper Mining LLC
- **Mine:** [0200152](https://api.ai-analytics.org/mine/0200152)
## Narrative

TPL2 No. 9 shaft east drift pulled out existing ground support and fell. There were no persons in the area at the time the ground fell. 8' resin bolts, 6' splits sets and wire mesh failed due to working ground that started in the newly blasted face. The area had been barricaded previously due to the spalling unsupported ground. 

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