On 27 May, the expedition made its second assault on the summit with the second climbing pair, the New Zealander Edmund Hillary and Sherpa Tenzing Norgay from Nepal. Norgay had previously ascended to a record high point on Everest as a member of the Swiss expedition of 1952. They left Camp IX at 6.30 am, reached the South Summit at 9 am, and reached the summit at 11:30 am on 29 May 1953, climbing the South Col route. Before descending, they remained at the summit long enough to take photographs and to bury some sweets and a small cross in the snow. They were using open-circuit oxygen sets; after ten minutes taking photographs on the summit without his oxygen set on, Hillary said he was becoming rather clumsy-fingered and slow-moving. On returning from the summit, Hillary's first words to George Lowe were Well, George, we knocked the bastard off. Stobart got the descending party to give no indication to those like Hunt and Westmacott waiting an agony of suspence at Advance Base (Camp IV) that Hillary and Tenzing had succeeded until they were close enough for Stobart to catch the emotion of the moment on film.