NACOGDOCHES, Texas –– Searchers found the front of the space shuttle Columbia's nose cone buried deep in the ground near the Louisiana border, officials said Monday night. "It's reasonably intact," said Warren Zahner, a senior coordinator for the Environmental Protection Agency, which is overseeing collection of shuttle debris . Other officials said the nose cone was burrowed deep in the ground. A crew was to return to the site about three miles west of Hemphill, near the Louisiana border, on Tuesday to excavate the nose cone. The shuttle broke up 39 miles over Texas and fell to Earth as it...