By late August 1952 the Ministry of Works had completed the two cableways that were to be used to carry concrete to the workface. To manufacture concrete on site the Ministry of Works purchased a Johnson concrete batching plant that had been used by the United States Navy in the reconstruction of Pearl Harbour after the Japanese attack in 1941. This came into operation in early April 1953. Upon completion of Roxburgh the plant was transported first to Benmore power station and then later to Aviemore power station and the Pukaki dam to mix aggregate for the penstocks, spillways and other concrete structures.