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  Savannah River Site empties more waste tanks
  The Department of Energy announced that waste from two more tanks at its Savannah River Site has been removed ahead of schedule. The tanks—numbers 11 and 15—are the fourth and fifth waste containers in 12 months to meet the milestone of preliminary cease waste removal (PCWR) regulatory approval, 7 and 19 months ahead of schedule, respectively, according to the DOE.
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The average number, , of prompt neutrons emitted in the spontaneous fission of U²³⁸ and Pu²⁴⁰ has been measured relative to for the spontaneous fission of Cf²⁵². This reference value is taken to be = 3.80. The measurements have been performed with large liquid scintillators and the results obtained are (U²³⁸) = 1.97 ± 0.07 and (Pu²⁴⁰) = 2.154 ± 0.028.