Abstract

This paper examines the available evidence relating to the disputed origin of Henry Cort’s iron-rolling process. The principal primary sources, reproduced in the Appendix, do not support the contention that Cort acquired the process from enslaved metalworkers at John Reeder’s foundry in Jamaica; nor that the foundry was dismantled and shipped to Portsmouth for Cort’s benefit. The sources instead suggest that ordinary and widespread ironmaking processes were in use at Reeder’s foundry; that no innovation occurred there; that the chain of events by which Cort is supposed to have heard of the foundry’s activities certainly did not occur; that Reeder’s foundry was destroyed because of the threat of a Franco-Spanish invasion force; and that no part of the foundry was removed from the immediate vicinity of the island, let alone taken to Portsmouth.

Details

Keywords

Henry Cort, John Reeder, Jamaica, historical evidence, grooved rollers, innovation, Industrial revolution

References
British Library, London, King’s MS 214.
Devon Heritage Centre, Exeter, Crosse-Upcott Family, Correspondence Re: Jamaica, 1160 M/C/J/1–30 [cited by document number].
Island Records Office, Spanish Town, Jamaica, Index to Grantees, B A Old Series, vol. 6, no. 248, 91, Indenture dated 29 April 1772.
The National Archives, London, ADM 52/1906 and CO 137/87.
National Collections Centre, Wroughton, Weale MS/0371.
Registrar General’s Department, Spanish Town, Church of England Parish Register Transcripts, 1664–1880, St Thomas in the East [cited by date].
Dublin Evening Post, 29 November 1781.
Manchester Mercury, 4 December 1781.
Public Advertiser, 23 November 1781.
Royal Gazette of Jamaica, 3 February 1781.
Barber, R. G. (Host). (2023, 7 August). Black metallurgists, iron and the industrial revolution [Audio podcast episode]. In Short Wave. NPR. Retrieved 20 August 2023, from: https://www.npr.org/2023/08/03/1191989712/henry-cort-stole-his-iron-innovation-from-black-metallurgists-in-jamaica
Renegade, G. T. (Host). (2023, 23 July). Dr. Jenny Bulstrode: White industrial espionage, theft of black ironworkers [Audio podcast episode]. In The Context of White Supremacy. Retrieved 30 July 2023, from: https://www.deezer.com/en/episode/533278215
Uwonkunda, V. (Host). (2023, 6 July). Newsday [Radio programme]. BBC World Service. Retrieved 2 August 2023, from https://www.bbc.co.uk/programmes/m001nksn
Berg, P. & Berg, T. (Trans.) (2001). R R Angerstein’s illustrated travel diary. London: Science Museum.
Bulstrode, J. (2023a). Black metallurgists and the making of the industrial revolution. History and Technology 39(1), 1–41.
doi: 10.1080/07341512.2023.2220991
Bulstrode, J. (2023b). Stolen Jamaican innovation made British manufacturers ‘millionaires’, Jamaica Gleaner. Retrieved 30 July 2023, from: https://jamaica-gleaner.com/article/commentary/20230716/jenny-bulstrode-stolen-jamaican-innovation-made-british-manufacturers
Goucher, C. L. (1990). John Reeder’s foundry: A study of eighteenth-century African-Caribbean technology, Jamaica Journal 23(1), 39–43.
Goucher, C. L. (1993). African metallurgy in the Atlantic world, The African Archaeological Review 11, 197–215. doi: 10.1007/BF01118148
Goucher, C. L. (2013). Iron sails the seas: A maritime history of African diaspora iron technology. Canadian Journal of Latin American and Caribbean Studies 38(2), 179–196.
doi: 10.1080/08263663.2014.959397
Hayman, R. (2004). The Cranage brothers and eighteenth-century forge technology. Historical Metallurgy 38(2), 113–120.
Holroyd, J. (1784). Observations on the commerce of the American States. London: J. Debrett.
How to Cite
Jelf, O. (2025). The origin of Henry Cort’s iron-rolling process: assessing the evidence. Historical Metallurgy, 55(2), 70-80. https://doi.org/10.54841/hm.674
Section
Articles