|/ /1930||Clyde Iron Works|
Taken over by Colvilles Ltd.
|01/01/1931||David Colville & Sons
James Dunlop & Co
Merger of David Colville & Sons and James Dunlop & Co forms Colvilles Ltd.
Mossend Steel Works bought from William Beardmore & Co Ltd.
|/01/1936||Steel Company of Scotland
The Steel Company of Scotland is merged with Colvilles Ltd.
|/ /1937||Colvilles Ltd|
Re-structuring begins which will ultimately lead to the construction of the Ravenscraig Steel Works.
|09/07/1954||Ravenscraig Steel Works|
Works opened by Colvilles Ltd at a cost of £20,000,000, with 2 batteries of 35 coke ovens, a blast furnace and melting shop with 3 furnaces. Colvilles Ltd older furnaces were to be demolished.
|/ /1958||Colvilles Ltd|
Govan Iron Works ('Dixon's Blazes') closed.
|/ /1961||Colvilles Ltd|
Ravenscraig Steel Works fully opened.
|/ /1967||Waverley Iron Works|
Closed, after being owned briefly by Colvilles Ltd.
|/ /1967||Colvilles Ltd|
Becomes part of the British Steel Corporation.