 Despite strong competition from Sydney makers of ceramic pipes and from the Hoskins firm's iron pipes, Lithgow products were used in many important drainage and sewerage plants throughout New South Wales.The brick production was very large, up to 50,000 bricks a day after the Sercombe kiln was installed in 1901 and is reflected in many major public works in the state as well as private houses in Lithgow.The site is historically rare because of its relationship of clay products with a major colliery and an adjacent clay pit; the exceptionally high esteem in which its domestic pottery products are held and its economic importance within the Lithgow region.