 As information was declassified under the 50-year rule, new facts on Crabb's disappearance came to light.On 27 October 2006, the National Archives released papers relating to the fatal "Ordzhonikidze" mission.Sydney Knowles, a former diving partner of Crabb's, stated in a televised interview on "Inside Out – South" on 19 January 2007 that Crabb did not dive alone on his fatal last mission