# Fractures at Mountain Aire Mechanical
> OSHA SIR `2018043188` · 4/3/2018 · BOULDER, COLORADO
## Severity
- **1 hospitalization**
- **Body part:** Wrist(s)
- **Nature of injury:** Fractures
## Cause
- **Event:** Other fall to lower level, unspecified
- **Source:** Ladders, unspecified
- **Secondary source:** Ducts
## Employer
- **Name:** Mountain Aire Mechanical
- **Location:** 3333 Walnut St, BOULDER, COLORADO, 80304
- **NAICS:** 238220
- **Jurisdiction:** 1
## Narrative

An employee was on a ladder (fourth rung) cutting ductwork loose when a piece of the ductwork became caught on an internal metal liner. The ductwork then swung to the side, knocking the employee to the ground. The employee broke both wrists.

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