Edmund William Jansen died suddenly on August 18th, 1945, at Lundin Links, Fife, at the age of 77.
He was educated at Uppingham School and Cambridge University, and became a pupil of Messrs. Edward Riley & Co., mining engineers and assayers, in 1891. A year later he began his mining training at the Camborne School of Mines, graduating with the Diploma of the School in 1895.
During 1893 he had reported on the Pilleys Island, Newfoundland, pyrites deposits for Messrs. Edward Riley & Co., and in 1894, working for private interests, he visited the iron mines of Bilbao, the gold, lead and slate mines of North Wales, and the South Staffordshire coalﬁeld. He was then appointed by the Don Pedro Gold Mines of Brazil as surveyor and assistant manager, and in 1896 he entered into partnership with Mr. E.M. Touzeau, consulting engineer, of London, subsequently representing his ﬁrm in New Zealand and Australia.
In 1899 he visited the United States and reported on several mines in the Mother Lode of California, and in Montana, in conjunction with Mr. Richard Parker. From 1900 Mr. Janson was a partner of the late Mr. Percy Tarbutt, practising as Tarbutt, Son, and Jansen, the ﬁrm later being re-named Percy Tarbutt & Co., and he travelled extensively in his professional capacity. He retired from active mining work in 1930, but continued to act as a director of various companies, including the Associated Tin Mines of Nigeria Ltd the Consolidated African Selection Trust, Ltd., and the Jantar Nigeria Co., Ltd.
Mr. Jansen was elected to Membership of the Institution in 1909.
Vol. 55, Trans IMM 1945-46, pp.569-70.