HANDLING OF MATERIALS at Essroc Cement Corp.
Employee was directing a tractor-trailer flat bed truck of drainage pipe in the A-Frame building. While directing the truck to move forward, the truck drove over a bump. Apparently there was a loose 4 foot long 2 x 4 on top of a section of the piping which bounced off of the load striking the employee in the left thumb. The employee suffered a broken LT thumb as a result.
U.S. Mine Safety and Health Administration