Administrative record (item) - CAC Correspondence Relating to the Ikara Project for the RAN - Ex. 200/220 Project 9.4/9.5: Secret - G.24, Minutes - Ikara Installation in Derwent - Present Mr IH Ring, Cdr McClelland, Lt's Blackman & Ryan, Messers Hick, Sanderson, Qunilan, Kentwell and Barber