The hospital expanded rapidly and in 1940 a new non European ward was opened, the extensions of the nurses' home were completed as well as a new five storey building for European patients was finished. In 1943 a new administration building, the "George Constable Block" was occupied.In 1948 the State assumed full control over the Boksburg-Benoni Hospital, which meant that the hospital board had no more financial responsibilities as all funds for the maintenance of the hospital were provided by the administration.