The works closed because the products made there became obsolete as continuous casting of steel replaced the traditional ingot casting of steel. Most of the manufacturers of casting pit refractories - trumpet bells, guide tubes, centres and runner bricks - just closed. The other 2 manufacturers in the Loxley Valley - Thos. Wragg and Thos. Marshall (both later Hepworth owned) closed in 1992. There continued to be a market for stoppers and nozzles for use in ladle flow control but they became manufactured in a range of materials not manufactured locally. I worked for Dysons, my father for Wragg’s.