Prince William said Tedworth House made him and his brother, Prince Harry, "very, very proud" as he declared the recovery centre officially open.
He said: "It is an enormous pleasure to be here at Tedworth House. This place, and what Help for Heroes and its partners have done here, makes Harry and me very, very proud."
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Suffolk police say they have now completed the search of the second area at the Milton landfill site.
Bitter with temperatures barely above freezing.
A 14-year-old girl was declared dead at the property before an eight-year-old boy and seven-year-old girl died in hospital.