Kilbury Group completed the concrete package for the Icon Cancer Bunker at the Holmesglen Hospital in Moorabbin for Hutchinson Builders. The concrete package consisted of bored piers, a slab on ground and 1,200mm thick in-situ bunker walls. The structure was to be constructed inside the existing hospital. One challenging aspect of the package was the 1,200mm wide bunker walls. Kilbury Group were able to design the pour so that the external 200mm of the wall was sprayed with shotcrete with the shotcrete wall then being used as the external formwork for the internal 1,000mm wide in-situ wall.