of Renishaw Iron Works, of Derbyshire, pig iron manufacturers Telephone: Eckington 17. Telegraphic Address: "Furnaces, Renishaw"
1920s-30s Difficult times for the company as demand for pig iron fluctuated with consequent firing and shutting down of furnace and hiring/firing of workers.
1937 Listed Exhibitor - British Industries Fair. Pig Iron Brand "Renishaw" Foundry Iron, Derbyshire quality , for general engineering castings and light castings. Special Low Phosphorous and High Manganese iron for all grades of high class castings. (Stand No. D.821) 
1941 Patent - An improved wheel attachment for prevention of wheel spin.
1945 Patent - Improvements in or relating to chairs for railway lines.
1968 British Steel announced that pig iron production would cease with 225 out of 420 losing their jobs. This was a consequence of closing the open hearth steel making plant at Park Gate Iron and Steel Co's works which would reduce demand for pig iron from Renishaw to below economic levels .