# HOISTING
> MSHA accident `220121460021` · 05/16/2012 · U.S. Silver-Idaho, Inc.
## Details
- **Degree of injury:** ACCIDENT ONLY
- **Classification:** HOISTING
- **Accident type:** Accident type, without injuries
- **Occupation:** —
- **Activity:** —
- **Injury source:** —
- **Nature of injury:** —
- **Body part:** —
- **Days lost:** 0
- **Mine experience:** — years
## Operator
- **Controller:** U S Silver Corporation
- **Operator:** U.S. Silver-Idaho, Inc.
- **Mine:** [1000082](https://api.ai-analytics.org/mine/1000082)
## Narrative

There was a malfunction in a regulator at the Avista Electric Company substation which supplies power to our facility. This malfunction resulted in a high voltage situation which tripped our high voltage relays causing power to kick out. There was no one in the conveyance when the power tripped. As a precautionary measure we evacuated all underground personnel.

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