Roasting of Gold and Silver Ores - And the Extraction of Their Respective Metals Without Quicksilver #229244

The favor which the first edition of the present treatise on Roasting of Ores was received by the mining public, and the increased inquiries after a new edition, induced the author to write the present book. During the long interval of ten years which elapsed since the first edition, many improvements in the construc tion of furnaces, as well as in the way of roasting, have been introduced; this edition, therefore, has undergone many alterations.