Incident date: 2025-05-01
NAICS industry code: 331313

An employee was conducting preventative maintenance on an extrusion press and using an impact wrench to remove rivets on the shear cylinder. When the last rivet was removed, the stored energy in the cylinder released and dropped it onto the employee's hand. Their right thumb was caught between the cylinder and the casing of the rivet gun, resulting in crushing injuries. The employee sustained an amputation of the thumb without bone loss. The machine was locked out/tagged out at the time.

Hazard classification:
code_event: title: Struck by running powered equipment  during maintenance, cleaning, testing
code_source: title: Extruding machinery
code_nature: title: Avulsions, enucleations without bone loss
code_body: title: Thumb(s)
severity: high