Appleby-Frodingham Steel Co
of Scunthorpe, Lincolnshire. Telephone: Scunthorpe 131. Telegraphic Address: "Appfrod, Scunthorpe".
1864 Work began on the Frodingham Ironworks, near the village of the same name and now part of Scunthorpe. The first furnace was blown-in during May 1865. The first casts gave a daily make of five tons; later this was increased to twelve tons.
1876 Appleby Ironworks's first furnaces were ready for blowing.
The output of the early producers in the Scunthorpe was basic pig iron which was suitable for forging but less useful for foundry work because of its relatively high manganese content. Much of the pig iron was therefore sent to the bar, sheet and wire trade of Staffordshire.
1887 Crude steel was first made at Frodingham, but this was considered not to be viable.
1912 The Appleby-Frodingham Steel Co was formed by Frodingham Iron Co's take-over of the Appleby Iron Co. These 2 companies, located in villages near Scunthorpe, were amongst the areas oldest iron producers in the area.
1937 British Industries Fair Advert as part of The United Steel Companies. Steel Constructional Materials, Steel Plates, Steel Sheet Piling. (Engineering/Metals/Quarry, Roads and Mining/Transport Section - Stand Nos. D.713 and D.612) 
1951 One of the companies nationalised as part of the nationalisation of the iron and steel industry
1954 One of the United Steel companies returned to private ownership
The Scunthorpe Works of Corus, formerly the Appleby-Frodingham Steel Co, has been producing iron since 1865 and steel since 1890. It remains one of the UK's premier steel plants with a current capacity of 4·8 Mt/year of liquid steel. Today the Works remains as an integrated site with a somewhat unique mix of products including heavy plates, sections, semi-finished billets and slabs, wire rods and fabricated construction products, with rails being introduced from 2007.
-  Wikipedia
Sources of Information
- The Industrial Base of Scunthorpe http://www.visitoruk.com/historydetail.php?id=1099&cid=1207&f=scunthorpe
- 1937 British Industries Fair Advert p665; and p328
- The Edinburgh Gazette 23 February 1951
- The Edinburgh Gazette 26 March 1954