The incident happened on Oct. 13, 12 @ 1:20 am. EE reported on 10/16/12 that he bumped his head on a pipe in the automated line while packing buckets of zeolite. He never reported to other workers that he was hurt or that he needed to see a doctor. I was not aware of medical treatment of any type until 10/24/12. He was wearing his hardhat at the time of incident.