Radioactive plutonium and americium have been found in air samples collected at the Rattlesnake Barricade just off public Highway 240, where workers enter the secure area of the Hanford nuclear ...

Nov. 24—LOS ALAMOS — It's been decades since the U.S. Department of Energy wrapped up a cleanup of a Los Alamos canyon and declared it safe for public recreation. Starting in the 1940s, Acid Canyon ...

RICHLAND — Nuclear archaeology has solved the mystery of a jug of plutonium that was found sealed inside a safe dug up as workers cleaned up an early Hanford burial ground. Science showed the ...

1. Depleted Cranium has an excellent article on the problems of making a nuclear bomb from material taken from a commercial nuclaer reactor and even taking material during reprocessing. The issue is ...