Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,192 pages of information and 233,429 images on early companies, their products and the people who designed and built them.
1860 Malleable iron works opened
1866 A storm destroyed their puddling shed 
1889 'STOCKTON STEELWORKS. Yesterday the Stockton Malleable Iron Company, Portrack, made a successful start with their new steelworks, which, as we have previously recorded, have been in course of construction for many months, in immediate proximity to the company's ironworks. The process is the Siemens-Martin, and yesterday the first of three furnaces was tapped, the capacity being for about 200 tons of ingots per week, which will be stocked in readiness for the mil, which is expected to be completed in about six weeks, and will roll about 600 tons per week.'
1892 'THE GREAT WATKIN TOWER. Iron says:—"As the contract for the metal has now been placed, it may be expected that work on the great tower at Wembley Park, London, will shortly be proceeded with. The erection, which is to eclipse anything of the kind that has ever been attempted, is to be entirely constructed of steel, which is to be furnished by the Stockton Malleable Iron Company. It will be 1,150 feet high above the base, which will rise 162 feet above the level of the ground, and it will, therefore, exceed by some 150 feet the height of M. Eiffel's celebrated Parisian structure. Messrs. Heenan and Froude, of Manchester, are building the tower," '
1893 Rolled a portion of the steel plates for the liner 'Gigantic' constructed by Harland & Wolff 
In 1898 Christopher Furness, in association with Mr. W. C. Gray, of West Hartlepool, purchased the Moor Steel and Iron Works, of Stockton-on-Tees, the Stockton Malleable Iron Works, and the West Hartlepool Steel and Iron Co, which were converted into a single undertaking, the South Durham Steel and Iron Co (Limited).