All non-Crown held land on the 2960 sqkm area of the Suffield Block was expropriated by the Canadian federal government Susan L. Smith and Stephen Mawdsley, Proving Ground: Alberta's Role in U.S. Health Policy for Soldiers and School Children at Mid-Twentieth Century Donald H. Avery, The Science of War, Canadian Scientists and Allied Military Technology During the Second World War and included the cancellation of all lease arrangement.