Abstract
James Douglas became known in the nineteenth century for two reasons fundamental to his mining career: (1) his experimental work with copper hydrometallurgy , and (2) his grasp of the idea that the quantity of copper ore matters more than the quality. On the first reason, there is a moment for any technology that’s critically important—when it moves from an area of scientific interest to one that companies are founded on. This paper examines the original 1869 Hunt and Douglas Copper Process in the context of science and engineering as they were in the 1860 and 1870s. It was a “humid” process, developed at Quebec’s Harvey Hill Mine. Chemically, the Hunt and Douglas vat leaching process succeeded, but not the original companies using it. On Douglas’ understanding of ore quality versus quantity, luck had it that the first company to field test the Hunt and Douglas Copper Process was in Chile . The Hunt and Douglas patent made that transition from experimental model to operational plant in 1870 when the Compañia de Minas de la Invernada was organized in Valparaíso. As a joint-stock company, Invernada spread the risk of investing in the revolutionary, but untested, Hunt and Douglas Process. The company brought Douglas to Chile as a consultant in 1871. His experience with hydrometallurgy , combined with what he learned about the copper business while in Chile , set him off on a career in metal mining that both surprised Douglas and made him wealthy.
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Notes
- 1.
Van Arsdale’s full dedication included J.V.N. Dorr, “without whose inventions modern leaching would not be possible.” Mining historian Robert Spude suspects that the inclusion of Dorr in the dedication was an action by the posthumous editors of the manuscript left by Van Arsdale, all were Dorr Company employees.
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Culver, W.W. (2018). Douglas Centenary Commemoration 1918–2018: Engineering the Science—James Douglas, Early Hydrometallurgy and Chile. In: Davis, B., et al. Extraction 2018. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-95022-8_107
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