 Complete the following phrase:  From April 2002 through May 27, 2004, of contaminated debris and soils were packaged, shipped, and disposed at Clive, Utah; the remains of the shelter were removed. In 2005, the contaminated area was estimated as 7 acres and  were additionally remediated by 2007. The 1972 RW-01 perimeter fence with height topped with barbed wire was extended by 2007 to include a larger area on the south. A 2013 study compared the characteristics of the accidents particle release with the nuclear warhead dispersals of the 