The Alpine Club of Pakistan identified the recovered climbers as Purja, Wang Zhong, Nima Sherpa and Kili Pemba Sherpa. On Saturday, Purja’s expedition company said the world had lost one of mountaineering’s greats. Alpine Club of Pakistan President Irfan Arshad Khan said the tragedy was “an immeasurable loss to the global mountaineering fraternity.” The expedition was led by Purja, the Nepal-born former British Army soldier widely known as Nims Dai. Accidents are common on climbing expeditions in northern Pakistan because of avalanches, falling ice and rock, extreme altitude and rapidly changing weather.