Excerpt from Metallurgical and Chemical Engineering, Vol. 16: January 1, 1917 At Anaconda conditions are Widely different; here there is an ore containing about four parts Of iron for every one part of copper, with the result that the con centration ratio is only three into one. Moreover, the mineral is so coarse that over two-thirds Of it can readily be removed after grinding to 2 mm. The coarser table concentrates are so much easier to handle in the smelter and the dust losses are so much. Less that it would he obviously unwise to grind everything to flotation size before commencing concentration. The remodeling at Anaconda was completed during the year, and the entire reduction works are now oper ating on the new basis. The plant has produced in excess of lb. Of copper per month for several months. The normal monthly output is between and lb. 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.