Incident date: 2016-12-07
NAICS industry code: 236220

An employee in a drilling rig had drilled a shaft for a new sewer tunnel. The employee was changing the bit on the drilling rig when the seat broke on the operator's station, causing the employee to fall off and into the drilled hole (14 feet). The employee suffered a head laceration and concussion.

Hazard classification:
code_event: title: Fall through surface or existing opening 11 to 15 feet
code_source: title: Sewers, manholes, storm drains
code_nature: title: Concussions
code_body: title: Brain
severity: moderate