A time for prayer in Katmandu after the deadliest accident ever on Mount Everest.<br/> <br />At least 13 sherpas were killed Friday when snow and huge chunks of ice swept down a perilous pass on the mountain.<br/> <br />The search is now over for the three sherpa guides still missing.<br/> <br />The accident is focusing attention on the risks sherpas take ---- carrying supplies for foreigners eager to climb the world's highest mountain. Overcrowding on Everest, where the number of fatal accidents has risen in recent decades, although it dropped last year.<br/> <br />Some think there should be no more expeditions this year -- but that can be a tough choice for people with few options. Sherpas can earn up to $5,000 a year in a country with an average annual income of just $700.<br/> <br />SOUNDBITE: CHHRING SHERPA SAYING (Nepali):<br/> <br />"Some people want to return. It's a compulsion. The compulsion is mainly for the money because they don't have any other work.<br/> <br />They are thinking of continuing. In my opi
