Bessemer Gold Medal

Pierre-Émile Martin (French: [pjɛʁ emil maʁtɛ̃]; 18 August 1824, Bourges, Cher – 23 May 1915, Fourchambault) was a French industrial engineer. He applied the principle of recovery of the hot gas in an open hearth furnace, a process invented by Carl Wilhelm Siemens.
In 1865, based on the Siemens process, he implemented the process which bears his name for producing steel in a hearth by remelting scrap steel with the addition of cast iron for the dilution of impurities.
His work earned him the award of the Bessemer Gold Medal of the Iron and Steel Institute in 1915 and of the French nation (knight in 1878 then Officer of the Legion of Honour in 1910).

Henry Louis Le Chatelier (French pronunciation: [ɑ̃ʁi lwi lə ʃɑtəlje]; 8 October 1850 – 17 September 1936) was a French chemist of the late 19th and early 20th centuries. He devised Le Chatelier's principle, used by chemists and chemical engineers to predict the effect a changing condition has on a system in chemical equilibrium.

Sir Harold Montague "Monty" Finniston FRS FRSE (15 August 1912 – 2 February 1991) was a Scottish industrialist.

Sir Ian Kinloch MacGregor, KBE (21 September 1912 – 13 April 1998) was a Scottish metallurgist and industrialist, most famous in the UK for his controversial tenure at the British Steel Corporation and his conduct during the 1984–85 miners' strike while managing the National Coal Board.