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Coltness Iron Works, Newmains, Lanarkshire.
of 138 West George Street, Glasgow.
Manufacturers of the Famous 'Coltness' Brand.
1836 Company established.
1836 Thomas Houldsworth of Farnsfield, M.P. for Nottingham, Henry Houldsworth's brother, bought the Coltness estate
1837 He established the Coltness Iron Works.
1899 The company was registered on 10 July, to take over the business of a private company of the same name. 
1914 Iron and coal masters, steel and iron founders, chemical manufacturers, Portland cement manufacturers.