Pay books of Bell Brothers South Brancepeth Colliery (South Durham, Brockwell seam and Busty seam) and Clarence Iron Works.

British Steel Corporation Ltd (now known as British Steel) internal documents relating to the future of the industry, 1960s-1970s, and papers produced for the Trades Union Congress by David Delay on the British steel industry.

Records of Welsh steelworks, 1928-1957, including statistical data relating to output, costs, profit and loss, and mainly comprising weekly reports from individual companies and works.