# Major tears to muscles, tendons, ligaments at Superior Refining Company LLC
> OSHA SIR `2018033102` · 3/31/2018 · SUPERIOR, WISCONSIN
## Severity
- **1 hospitalization**
- **Body part:** Knee(s)
- **Nature of injury:** Major tears to muscles, tendons, ligaments
## Cause
- **Event:** Fall on same level due to slipping
- **Source:** Parking lot, unspecified
- **Secondary source:** Ice, sleet, snow
## Employer
- **Name:** Superior Refining Company LLC
- **Location:** 2407 Stinson Ave., SUPERIOR, WISCONSIN, 54880
- **NAICS:** 324110
- **Jurisdiction:** 1
## Narrative

An employee slipped and fell on ice in the parking lot. He injured his knee and required surgery.

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