Metal-work; a handbook for teachers and students (1914)
Adam, Hugh M. [from old catalog], Evans, James Humphrey, [from old catalog] joint author · New York, Longmans, Green and co.; London, E. Arnold · leaf 64
s the commonestmethod. The charge consists of about 3 tons of crushed ore,which is roasted from twelve to twenty-four hours as required. 46 THE ALLOY METALS 47 During the process quantities of sulphur dioxide are evolvedin the form of white fumes, known as copper smoke/ Thesefumes are now used in… … SECTION ON A.B.
Metal-work
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
