# Amputations involving bone loss at Western Well Service LLC
> OSHA SIR `2025043235` · 4/8/2025 · SIDNEY, MONTANA
## Severity
- **1 amputation**
- **Body part:** Other finger(s)  n.e.c.
- **Nature of injury:** Amputations involving bone loss
## Cause
- **Event:** Struck by running powered equipment  during maintenance, cleaning, testing
- **Source:** Drilling and extraction machinery  unspecified
- **Secondary source:** Secondary source not applicable
## Employer
- **Name:** Western Well Service LLC
- **Location:** Joe 31X-19 oil well, SIDNEY, MONTANA, 59270
- **NAICS:** 213112
- **Jurisdiction:** 1
## Narrative

An employee was under the rig floor adjusting a chain on the slips when his finger became caught between the chain and the blowout preventer (BOP). The employee sustained the amputation of his finger.

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*Source: [OSHA Severe Injury Reports](https://www.osha.gov/severe-injury-reports) · MORVS · CC0 1.0*