Editing Pearson plc (section)

=== Coal businesses 1921 to 1947 ===
Following Wheetman Pearson's 1907 creation of [[Whitehall Securities]] as its holding company for all of Pearson's non-contracting industries,<ref name="IDCH"/> beginning in 1921 Pearson partnered with [[Dorman Long]]<ref name="kent pdf"/> to form a coal-mining conglomerate in 1922,<ref name="IDCH"/><ref name="kent pdf">{{cite web |last1=Johnson |first1=W. |title=The Development of the Kent Coalfield, 1896–1946 |url=https://kar.kent.ac.uk/86510/1/602431.pdf |website=kar.kent.ac.uk |publisher=[[University of Kent at Canterbury]] |access-date=11 February 2024 |date=October 1972}}</ref><ref name="Grace S">{{cite web |title=S. Pearson and Son |url=https://www.gracesguide.co.uk/S._Pearson_and_Son |website=gracesguide.co.uk |publisher=[[Grace's Guide]] |access-date=11 February 2024}}</ref> called Pearson & Dorman Long Ltd.<ref name="NA Pearson Dorman">{{cite web |title=Pearson & Dorman Long Ltd, colliery owners |url=https://discovery.nationalarchives.gov.uk/details/c/F183159 |website=discovery.nationalarchives.gov.uk |publisher=[[The National Archives (United Kingdom)|The National Archives]] |access-date=11 February 2024}}</ref> The company purchased and operated many [[colliery|collieries]] in the UK through at least 1947.<ref name="Grace S"/><ref name="NA Pearson Dorman"/>