New York Times: A competition between nuclear waste dumps has pulled the Nuclear Regulatory Commission into an unusual reconsideration of its rules to allow moderately radioactive materials to be diluted into a milder category that is easier to bury. At issue is whether a site in Utah that is licensed to accept only the mildest category of radioactive waste, called Class A, could accept far more potent materials, known as Class B and C wastes, by blending the three together. Even low-level …