# Amputations at Mechanical Dynamics and Analysis Repairs Shop
> OSHA SIR `2021021494` · 2/18/2021 · SAINT LOUIS, MISSOURI
## Severity
- **1 amputation**
- **Body part:** Finger(s), fingernail(s), unspecified
- **Nature of injury:** Amputations
## Cause
- **Event:** Compressed or pinched by shifting objects or equipment
- **Source:** Machine and appliance parts, n.e.c.
- **Secondary source:** Dimensional lumber: 2x4, 2x3, etc.
## Employer
- **Name:** Mechanical Dynamics and Analysis Repairs Shop
- **Location:** 3804 Weber Road, SAINT LOUIS, MISSOURI, 63125
- **NAICS:** 333611
- **Jurisdiction:** 1
## Narrative

A 300-pound intermediate pressure stop valve disk was on its edge, braced against a 6-by-6 timber, while an employee measured the internal seat angle with a protractor. He had reached into the valve disk bore with his right hand, from the bottom side of the disk. As he was removing his hand, the timber slid away, and his index finger was caught between the disk bore and the protractor as the disk slid down the timber. He suffered a partial amputation to the finger.

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