# Fractures at Yellowstone Concrete Cutting
> OSHA SIR `20181011172` · 10/30/2018 · BILLINGS, MONTANA
## Severity
- **1 hospitalization**
- **Body part:** Arm(s), unspecified
- **Nature of injury:** Fractures
## Cause
- **Event:** Struck by object or equipment, n.e.c.
- **Source:** Boring, routing, notching machines
- **Secondary source:** Nails, brads, tacks, nuts, bolts, washers
## Employer
- **Name:** Yellowstone Concrete Cutting
- **Location:** 725 US-87, BILLINGS, MONTANA, 59101
- **NAICS:** 238910
- **Jurisdiction:** 1
## Narrative

An employee was boring a 28-inch hole using a concrete boring machine. The machine's anchor bolts broke and the machine spun around and struck the employee causing a left arm fracture.

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