An employee had been mixing cathode powder in a mixer. With the mixing completed, he tilted the mixer to empty the powder into a bucket through the designated port. The mixer was powered on to push the powder out through the port. There was powder adhered to the port, and he tried to get it out using his left hand. The mixer blade contacted his fingers, resulting in deglovings and fractures to the middle and index fingers. The middle finger was medically amputated.