Question: Alf Ellison was the chairman of operations at what farm implement maker in the United Kingdom?
Related documents: [0]  [DOC] Blackstone & Co. was a farm implement maker at Stamford, Lincolnshire, United Kingdom. [END] 
[1]  [DOC] Alfred Owen Ellison (1 January 1903 – 12 June 1987), often referred to in print as A.O. Ellison and known colloquially as Alf or A.O., was an Australian solicitor, company director, racehorse owner and breeder. For over forty years he was the owner of Baramul Stud. Ellison served as chairman of the Australian operations of Mutual Acceptance Ltd (now Standard Chartered) and Lister Blackstone. He was President of the Bloodhorse Breeders' Association of N.S.W. [END] 
Answer: 
Blackstone & Co.
Blackstone & Co.