| Show The e Story o of Copper in Utah r 1 1 tt z fi A i a Utah Copper Is a test tube of research striving to improve mining and milling methods Editors Editor's Note This la Is the seventh of or a Belies of or eight articles titled The Story of or Copper in Utah H Utah Copper Is in reality a test tube out of which has come some of the highly beneficial contrIbutions contributions contributions to mining and metallurgical science The entire organization is continually striving to Improve operating efficiency ncr looking toward the treatment of ot lower grade ore Mining on such a large sc scale le as asIs asIs asis Is done at Utah Copper is a fascinating fascinating fascinating fas fas- operation The sides of or orthe the open-cut open pit are cut Into giant steps or benches averaging 67 ft in height and from 70 to ft in width From these benches or levels ore is loaded into railroad cars of one ton hundred-ton capacity by largo large electric shovels The newest shovels which load the cars average average average aver aver- age over tons per eight hour shift shirt showing increased efficiency over older type equipment Around the various levels ranging ranging ranging rang rang- ing from the b bottom of or the pit to the top of or the mountain and amI lines to dump areas miles of standard standard standard stand stand- ard gauge railroad track have been een laid It is necessary to shift shUt the bench tracks from time timo to time as the various levels are cut back in inthe inthe inthe the process of mining After the ore Is mined cars are arc sent to assembly yards ards near the bottom of or the canyon where trains of or fifty cars are aro made up Froth From hero here they are arc dispatched to the concentrating plants at Arthur and Magna a distance of 17 miles milet from Bingham These two giant plants with a combined capacity of ot over tons of or oro ore per day are the larg largest t tIn In the world and present a marked contrast to the original ton plant plant built buill at Copperton in fn 1904 During the war the capacity of or these two plants was stretched to a combined capacity of or over tons per pOl day for tor a time lime The concluding article in this series will appear in m these columns soon |
