Laboratory Instructions for Fire Assays of Gold, Silver, and Lead

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Excerpt from Laboratory Instructions for Fire Assays of Gold, Silver, and Lead: Mining 107 A-B These instruction sheets have been prepared in this form to take the place of mimeograph copies which were formerly used by students electing the course in fire assaying at the University of California. These notes are concise directions for the carrying out of certain laboratory work, and in no wise cover the ground of the lectures which supplement the instruction in the laboratory. The purpose of the course is not to teach merely practical fire assaying, but also to familiarize the student with metallurgical principles which underlie smelting operations on the large scale, and in the lectures as much emphasis is placed on the underlying metallurgical principles as on the practical details of fire assaying. The laboratory work is divided into twenty-five assignments, thirteen of which are intended to cover the work of the first half-year, and the remaining twelve, the work of the second half-year. In addition to the twelve assignments of the second half-year, there will be given, as time permits, assignments relating to the fire assays of mercury, tin, cobalt, and antimony, and the determination of carbon, sulphur, and ash in coal and coke. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.