I attempted a winter attempt on the East Rib with a 9 member US/Canadian team in December 1987. Most of the climbing was done by me, Ken Reville and our Sherpa Pemba. We reached about 23,000′ on the East Rib and were turned back by a big storm. At the same time a large Japanese party was climbing the Bonnington Route. The two who made the main summit perished on their descent.