Los Angeles TimesReport: Mix of cat litter, salts caused nuclear-dump mishapKOMO NewsALBUQUERQUE, N.M. (AP) - An incompatible combination of nitrate salts and organic cat litter is to blame for a mishap that forced the closure of the nation's only underground nuclear waste repository, according to findings released Thursday by an ...Official Report: Nuclear Waste Accident Caused By Wrong Kitty LitterWFAEall 60 news articles »