Struck by... (Not Elsewhere Classified)
EE and another ee saw big rock in pile that shouldn't be there. We're inspecting screen panel condition & discharge cluck flop gate position. Both men were on opposite sides of catwalk. EE put his hand inside chute and the other ee pulled a lever on the other side. The gate was closed on ee thumb. He received 5 stitches on his thumb and lost his nail.