 The designs for the incinerators vary widely and there is no doubt that Nicholls contributed to the conception of most, but it is clear that Griffin exerted himself in the Willoughby building, located not far from his residential subdivision at Castlecrag.The 1930s depression impacted significantly on Willoughby Councli resulting in inadequate funds to install a second furnace or maintain the incinerator.There was a reversion to open-air dumping by the late 1940s and this continued on an increasing scale over the next 20 years.