er Runit (Yvonne) Cleanup and Crater Containment 443 As soil-cement operations began, an area approximately 100 feet in diameter was left open in the center of the mound. This area was . commonly called the “Donut Hole” (Figure 8-35). As contaminated debris was delivered to Runit, it was placed in the Donut Hole and choked in place with a four-bag (per cubic yard) mix of clean slurry. The Donut Hole remained open until mid-July 1979, when contaminated soil from Runit was used to complete the soil-cement operation so that the capping could be completed. HOT PARTICLE DISPOSAL There was considerable discussion regarding disposal of the more than 400 plastic bags of soil filled by the FRST and others in excising the plutonium-contaminated fragments on Runit. Mr. Roger Ray, the ERSP Manager,believed it would be better to treat these bags separately and not place them in the crater. The Director, DNA, and Commander, Field Command were willing to have the ERSP take responsibility for the bags pw and for their safeguarding, storage, transport, and disposal but, if this responsibility remained with DNA, they favored crater disposal.94 The ERSP Manager responded that these particles might have transuranic concentrations in the range of one thousand to one million times the