# Amputations at National Oilwell Varco
> OSHA SIR `2022021856` · 2/28/2022 · HOUSTON, TEXAS
## Severity
- **1 amputation**
- **Body part:** Fingertip(s)
- **Nature of injury:** Amputations
## Cause
- **Event:** Compressed or pinched by shifting objects or equipment
- **Source:** Oil drilling rigs and machinery
- **Secondary source:** Wrenches-power not determined
## Employer
- **Name:** National Oilwell Varco
- **Location:** 5100 N. Sam Houston Parkway W., HOUSTON, TEXAS, 77086
- **NAICS:** 333132
- **Jurisdiction:** 1
## Narrative

Two employees were working in a shop, repairing a piece of oilfield equipment known as an active heave drawworks (AHD) drum shaft. As one of them was inserting the bolt, the drum rotated, his crescent wrench slipped from its position, and his left hand was pinched between the wrench and the frame of the equipment. His index fingertip was amputated.

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