Show U. U S. S Mines Report Released The U. U S. S Bureau of Mines re report report report re- re port of investigation N No o. o 3 90 produced through the cooperation of the University of Utah was released re released released re- re leased recently according to an announcement of the local Bureau of Mines station r This report covers a microscopic study of ores and mill products from the Plant of the Consolidated Mr f Mining and Smelting company I F. F i Studies similar to this have ave in i the past helped to increase increase the c efficiency of milling and smelting as much as 95 per cent The study just released would apply to all i ores of the type investigated no matter where the ore was found Authors of the study just recently 1 completed ar are are R. R E. E Head A. A L. L Crawford F. F E. E and A. A L. L Christensen t I ll |