Top BUPA executives Dr Paul Bates and Dr Chris Dalton missing in Blue Mountains Missing....Dr Paul Bates and Dr Chris Dalton. A SEARCH is underway for two top BUPA medical executives missing in the Blue Mountains since Saturday. A BUPA spokeswoman said they were worried for the safety of their employees Chief Medical Officer Dr Paul Bates and Medical Director Dr Chris Dalton. "We are enormously concerned by the news they didn't return," the spokeswoman said. Our thoughts are with their families and we remain hopeful they'll be found quickly today. Search area... The Mount Wilson area of the Blue Mountains. Concern... The Polair chopper has joned the search Source: News Corp Australia Dr Dalton, 57, of Chatswood and Dr Bates, 58, of Mosman failed to return from a day trip bushwalk to Mount Wilson on Saturday. They were last seen leaving for the bushwalk at 6.30am on Saturday but when they failed to return that night they were reported missing. Police have described the area as "rugged." Police found their vehicle in a dirt car park next to the Mount Wilson fire shed. Emergency services conducted a land and air search yesterday which included the Polair police helicopter and Police Rescue. A briefing will be held at the Mt Wilson fire station this morning followed by the resumption of the search. Originally published as Top insurance execs missing