the miners were trapped underground longer than anyone on record. rescuers hope to have them all out by tonight. thai chandler for cbs news, new york. what an amazing journey these miners. as she said, they survived longer than anyone else trapped underground. for the first 17 days, after 700,000 tons of rock collapsed, no one knew they were alive. now they are joining a new world with fans, book deals, invites to presidential palaces. the chilean government promises to care for these men for at least six months as they adjust to their new found celebrity. the way these guys look, probably deceiving. much of their diet was two spoons of tuna, half a cookie and half a glass of milk. 48 hours. as dr. kim mulvihill shows us, these minutes may now have to fight for their health. reporter: many of the miners look remarkably healthy. but they face a number of medical challenges. their weakened immune systems could make them vulnerable to viruses. they may have developed gum dis