"With a new climbing season about to begin on Mount Everest, mountaineers who reach the South Col will be able to breathe oxygen from a source other than bottled O2. A Vancouver based company, Summit Air, has developed a system where oxygen will be pumped up the mountain from a camp in the Western Cwm above the icefall."
http://www.explorersweb.com/everest_k2/news.php?id=20047
