Incident date: 2015-08-15
NAICS industry code: 484230

An employee was attempting to loosen the pin so that he could adjust the tandem wheels under the back of his 53-foot semi-trailer for loading/unloading. An air line failed or an air spring (ballast) burst, suddenly dropping the trailer down and pinning the employee's arm between the top of the tire and bottom of the trailer frame. His arm was crushed and lacerated.

Hazard classification:
code_event: title: Compressed or pinched by shifting objects or equipment
code_source: title: Semi, tractor-trailer, tanker truck
code_nature: title: Crushing injuries
code_body: title: Arm(s), unspecified
severity: moderate