Henry T. Durant, chemist, metallurgist and engineer, was (by 1905) a Fellow of the Chemical Society, a member of the (British) Institution of Mining and Metallurgy, and a member of the American Institute of Mining Engineers. He became a member of the Chemical and Metallurgical Society of South Africa in 1896 and served on its council during 1897-1899. In May 1898 he read "Notes on the application of oxygen in the cyanide process" before its members. The paper and its subsequent discussion were published in the society's Proceedings (Vol. 2, pp. 328-333, 369-371, 409-411). He also delivered some comments during a discussion on the solution and precipitation of the cyanide of gold (Proceedings, Vol. 2, pp. 36-37). When the society was revived after the Anglo-Boer War (1899-1902) its name was expanded to the Chemical, Metallurgical and Mining Society of South Africa. Durant's only other known publication is a minor contribution to the "Notes and queries" section of this society's Proceedings in September 1902 (Vol. 3, pp. 105-111). He was still listed as a member in 1905, when he was consulting chemist and metallurgist to Rhodesia Gold Fields, Ltd., in Bulawayo. Between 1908 and 1910 he left Rhodesia (now Zimbabwe) for London, where he was associated with the Metals Extraction Corporation, Ltd. until at least 1914.
Durant registered six United States patents in the course of his career, all of which had something to do with the recovery of metals from their ores: Apparatus for the treatment of ores with solvents (1903), Separation of solids from liquids (1909), Wet process for the treatment of ores (1910), Apparatus for bringing a gas in contact with a liquid (1911), Extraction of metals from their ores (1911), and Extraction of zinc from its ores or products (1916).