LOS ALAMOS, N.M. =97 No one knows for sure what is buried in the Manhattan Project-era dump here. At the very least, there is probably a truck down there that was contaminated in 1945 at the Trinity test site, where the world=92s first nuclear explosion seared the sky and melted the desert sand 200 miles south of here during World War II.

scientists who built the world=92s first atomic bomb. They are approaching the job like an archeological dig =97 only with even greater care, since some of the things they unearth are likely to be radioactive, while others may be explosive.