1938 Architects Budden and Mackey won another Sulman Award for the Water Board Building, which featured some of Melocco Brothers’ finest scagliola. During the thirties “composite stone” was also developed. This was a combination of cement, dye and marble-stone chips made up into pre-cast panels and used as a facing on many Sydney buildings, such as the pink panelling on the old Rural Bank and the building on the corner of King and York Streets.