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Show The Vleiiua FxpoNition Report!. Re-port!. Washington, 11. The reports of the United States commissioners to the Vienna exposition are now being 1 issued by the government printing office. The first out is that on the metallurgy of lead, Bilver, copper and zinc, by Howard Painter, mining engineer. en-gineer. It ia an elaborate review of the exhibits of various nationalities and their processes of smelting and refining, with minute descriptions of the latest discoveries of roasting and smelting furnaces. |