Edmund Hillary
Sir Edmund Percival Hillary (20 July 1919 – 11 January 2008) was a New Zealand mountaineer, explorer, and philanthropist. On 29 May 1953, Hillary and Nepalese Sherpa mountaineer Tenzing Norgay became the first climbers confirmed to have reached the summit of Mount Everest. They were part of the ninth British expedition to Everest, led by John Hunt.
Greg Mortimer
Greg Mortimer, OAM is an Australian mountaineer (born 10 December 1952). Mortimer is most well known as one of the first two Australians (with Tim Macartney-Snape) to successfully climb Mount Everest on 3 October 1984 without oxygen. Their ascent was the first via the North face and Great Couloir and is now one of the established routes used to climb the mountain.