Show RECENT COPPER SMELTING edited by THOMAS T READ associate editor mining alining and scientific press pages 6 by 9 inches illustrations cloth postpaid copper smelting smelling sm elting practice is now in a period of rapid development similar to that upon which cyanide praet practice ice entered a decade ago this compilation of recent articles on copper metallurgy presents in convenient form the views of well known engineers on current practice from chile to alaska and from russia to japan ten years ago it was recognized that the growing use of copper for industrial du purposes would in make ake necessary a great increase in its production it was equally evident that no great bodies of comparatively rich sulphides sulp hides ldes or of native copper such as had until then been the mainstay of the industry were likely to be found metallurgists faced a great crisis how they met it and how they are preparing to meet the greater demands are told in this book by the men who are doing the work salt lake mining review distributors OVER 0 63 YEARS experience A TRADE MARKS 4 ka DESIGNS copyrights ac anyone sending a sketch and description may quickly ascertain ofir opinion free whether an invention is probably paten tahle con communications u i aca strictly confidential HANDBOOK on P patents t ants sent free oldest agency for securing patents patents taken through munn co 0 receive special notice without charge in the scientific Cialli fic american A handsomely illustrated weekly Tn circulation cu of any scientific itic journal terms ta 3 a year four months al 11 L sold by all news dealers dealer MUNN co roadway newyork new york branch office F st washington D C HOTEL STANFORD san Francis cos now new leading hotel KEARNY STREET SAN FRANCISCO between sutter and bush ADJOINING THE MINING STOCK EXCHANGE the most centrally located hotel in the city ALL MODERN improvements headquarters FOR MINING MEN LARGE WAR MAPS by the CLASON MAP CO JUST JU OUT each postpaid jobbers of clason maps of western states united states and war maps SEND US YOUR ORDERS THE SALT A LT LAKE MINING REVIEW 4 american mining congress 0 ZA phoenix arizona december ml through three trains daily california southern to LosAn los angeles the the pacific limited shortest los angeles limited and overland express connections at barstow and golton colton for phoenix arizona most pleasant ticket off offic ic io 10 east ad south way ay phones wasatch J H manderfield A 0 P A T C peck G P A los angeles salt lake city |