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of 32 and 33 Farringdon Street, London, EC4. Telephone: CENtral 3282. Telegraphic Address: "Bonecourt, Cent, London"
1927 Became part of Babcock and Wilcox.
1927 Patent - Improvements in and connected with waste heat boilers for generating steam.
1935 Patent - Improvements in steam generating installations, including waste heat and fuel fired boilers.
1937 British Industries Fair Advert. Catalogues and Photographs indicating the scope of our work as Waste Heat Recovery Specialists, and suppliers of Boilers operating on Industrial Gas. (Engineering/Metals/Quarry, Roads and Mining/Transport Section - Stand Nos. D.501 and D.400)
Sometime after 1950 became Spencer-Bonecourt-Clarkson