Incident date: 2020-04-01
NAICS industry code: 238990

Employees were trying to remove a guardrail so they could replace a concrete sidewalk. One of the guardrail's bolts was 
stripped and would not come out. A skid steer did not succeed in removing the bolt, so they released the pressure from the guardrail. The bolt then came loose, causing the guardrail to pop up and hit one of the employees on the chin. He suffered a neck injury and was knocked unconscious, then had trouble breathing after waking up. He was hospitalized.

Hazard classification:
code_event: title: Struck by dislodged flying object, particle
code_source: title: Guardrails, road dividers
code_nature: title: Soreness, pain, hurt-nonspecified injury
code_body: title: Neck, except internal location of diseases or disorders
severity: moderate