 In 1937 the United Steel Companies, which had coal mining interests at Orgreave and Treeton, made an offer for the Sheffield Coal Company of which the directors recommended acceptance, the deal being finalised on 24 June.The collieries of the Sheffield Coal Company, by that time owned by United Steel Companies, became part of the National Coal Board on nationalisation, but the company name, which had continued to exist under United Steel's ownership continued, along with others which became part of the NCB, until being finally wound up in 1961.From their agreement with the Earl of Manvers the company sunk Birley West Colliery on a site in the Shirebrook Valley between Woodhouse and Hackenthorpe and began extracting coal by 1852.