Abstract: At 7:15 a.m. on July 2, 2020, an employee was making a batch of concrete in a hopper however the concrete was not flowing properly. It was determined that the concrete was clumped and the pneumatic door at the bottom of the hopper was not opening enough with the limiters that were installed. The employee attempted to remove the limiter from the bottom of the hopper door when the door automatically opened. The employee suffered amputations to four fingertips, two from each hand. The employee was transported to a local hospital where the fingertips could not be reattached. The employee was not hospitalized.