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Arthur Rennie Knowler (1895-1946)
1947 Obituary 
"ARTHUR RENNIE KNOWLER, who was born in 1895, received his early technical education at the Durban Technical College and served his apprenticeship with the African Marine and General Engineering Company, Ltd., at Durban, from 1914 to 1916.
He then joined H.M. Forces and saw service in France for two years, being first attached to the South African Heavy Artillery and later to the 72nd Siege Battery, in which he served with the rank of Staff-Sergeant Fitter. On demobilization in 1919 he completed his technical training at the Northampton Polytechnic and obtained the College Diploma in mechanical engineering. An appointment on the staff of Messrs. A. G. Brown and Compagnie, of Baden, Switzerland, followed in 1923, for whom he was engaged during the next five years on the central power station plant and in the turbine test and design departments. His next position was that of estimating and technical sales engineer to Messrs. British Brown Boveri, Ltd., in London, but two years later he returned to the works at Baden, where he remained until 1934, when he resumed his connection with South Africa on his taking up an appointment with Messrs. Rogers, Jenkins and Company, Pty. Ltd., of Durban.
After two years' service with that firm he joined the operating staff of the Victoria Falls and Transvaal Power Co at the Klip power station. At the time of his death, which occurred on 11th April 1946, Mr. Knowler was acting assistant resident engineer at the Vereeniging power station. He had been an Associate Member of the Institution since 1928."