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John Crowley and Co of Kelham Iron Works, Sheffield and Meadow Hall Iron Works nr Sheffield made Malleable Iron Casting
1829, John Crowley bought land on the island and built a small iron foundry called Kelham Iron Works. He made all kinds of iron products - bicycles, corn grinders, lawn mowers, as well as decorative iron works.
1870 His business was so successful that he acquired larger premises at Meadow Hall in 1870. The Kelham Iron Works continued until the 1890s when the site was bought by the City.
1888 Incorporated as a limited company.
1894 Exhibitor at Antwerp Exhibition. Malleable iron and steel cross-heads, spanners, bicycle fittings, pipe connections etc. 
1894 June. Royal Agricultural Society's Show. Chaff Cutter. (of Meadow Hall Ironworks) 
1914 Malleable iron, cast iron and annealed cast iron founders and engineers. Specialities: agricultural implements, chaff cutters, root pulpers, corn crushers, pulley blocks etc. Employees 650. 
Plaque for the company and 'lawnmowers' seen at Dorset Steam Fair 2007