Abstract: At 9:10 a.m. on April 7, 2017, Employee #1 and Coworker #1, employed by a manufacturer of concrete pipe and other precast products, were engaged in precast work. Employee #1 was removing a concrete mold. He was attempting to place a brace under the concrete precast when Coworker #1, a machine operator, lowered the precast. The precast struck Employee #1's hand. Emergency services were called, and Employee #1 was transported to the hospital. He was treated for the partial amputation of two fingers. During the subsequent investigation, a factor in the incident was identified as lack of communication between the machine operator and the workers on the ground.