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Robert Angus Macmillan (c1884-1939), joint managing director of Gleniffer Engines
1939 Obituary 
We regret to learn of the death on May 21st of Mr. R. Angus Macmillan, of joint managing director of Gleniffer Engines, Ltd., Anniesland. Glasgow.
Mr. Macmillan had been actively connected as a director of the company since before the war, and was one of the pioneers in the design and production of the high-speed Diesel engine in this country.