This is a chemical lab or store or something in East Perth. It is pretty amazing. Did someone say Dudok? I am unsure of the detials, but I am guessing it is PWD around the early 50s, as they utilised this style and composition a lot in that time. Great use of interlocking volumes and rigorous fenestration detailing. The depth, composition and layering created by the merging rectangular volumes, punctuated by the tall chimney/exhaust stack is amazing. A really wonderful little building.