Accident report written2/5/08, employee believed injury was minor, did not go to Dr. Report kept on file if he wanted to see Dr. 4/1/08 He went to Dr., injury not getting better. Loading Scrapers w/Overburden, pushing w/cat. Cat hung up on Stinger Wear Patch, pressure increased, machines separated causing Scraper Operator to be jarred hard, causing strained neck.