During World War II, production was reduced. The plant used German prisoners of war that were housed at nearby Todmorden Mills. After the war a building boom revived demand. However, the sand-lime plant was destroyed by fire in 1946. Also the plant consolidated its outbuildings and three of the four signature chimneys were knocked down. Only one chimney remains today. The site underwent many changes during its existence, adding and removing buildings whenever and wherever it was conducive to the brick making process. The buildings, cluttered on the south end of the site, are all rectilinear buildings arranged in a grid-like pattern, connected wherever the users saw a need.