Leonard William Simpson died on 30th May, 1951, at Musoma, Tanganyika Territory, at the age of 69.

After a course of training in assaying and mineralogy with the late George T. Holloway, Mr. Simpson spent 6 months in Jamaica in 1904 on work for the West Indian Copper Co. He subsequently spent a year in Norway with Foldal Copper and Sulphur Co., Ltd., and in 1907 returned to England for further training.

From 1909 to 1911 he worked in Mexico as assayer and assistant manager no Barranca Mines (Mexico), Ltd., and assisted in the development of a silver lode for Eloisa, Ltd., of London. He then spent twelve months in German South West Africa reporting for the African Development Corporation, Ltd.

Mr. Simpson went to Nigeria in 1914, where for nine years he worked in various positions, principally manager, for Dua (Nigeria) Tin Fields, Ltd., Sybu Syndicate, Ltd., Nigerian Hydraulic Tin Mines, Ltd., and Premier Hydraulic Tin Mines of Nigeria, Ltd.

In 1925 Mr. Simpson joined Nus River Gold Mines, Ltd., Colombia, as accountant, and after five years in that position took up the appointment of assayer and technical secretary to the Panama Corporation, Ltd. He left in 1937 to work alluvial gold in Tanganyika on his own account before taking the post of assayer at Tanganyika Central Gold Mines, Ltd., in 1938. For some time before 1950 he had been working at Macalder Mines, Ltd., Kenya.

Mr. Simpson was elected an Associate Member of the Institution in 1931.

Vol. 62, Trans I.M.M., 1952-53, p.260

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