Nowhere were the problems greater than at the Hanford Site in Washington state, where engineers sent to clean up the mess after the Cold War discovered 54 million gallons of highly radioactive sludge left from producing the plutonium in America’s atomic bombs, including the one dropped on the Japanese city of Nagasaki in 1945.
Cleaning out the underground tanks that were leaching poisonous waste toward the Columbia River just 6 miles away and somehow stabilizing it for permanent disposal presented one of the most complex chemical problems ever encountered. Engineers thought they had solved it years ago with an elaborate plan to pump out the sludge, embed it in glass and deposit it deep in the mountains of the Nevada desert.
But construction of a five-story, 137,000 square-foot chemical treatment plant for the task was halted in 2012 — after an expenditure of $4 billion — when it was found to be riddled with safety defects. The naked superstructure of the plant has stood in mothballs for 11 years, a potent symbol of the nation’s failure, nearly 80 years after World War II, to deal decisively with the atomic era’s deadliest legacy.
