Show A rolls versus hardinge ball mills at the arizona copper company one 8 f ft t dia by 48 in cylinder hardinge conical ball mill was installed on trial to replace a section of rolls at the arizona copper A company recently the mill was paid for as fulfilling the requirements these requirements were very severe the mill had to be so much more efficient and economical in n operation that it would pay the management to actually discard the rolls previously used eg it is just such direct competitive tests as this one that have put the hardinge mill in the enviable position it now occupies once a hardinge mill is installed on a competitive basis it bremanis in place for the simple reason that it is the one that always wins write tor for our grinding data bulletins CABLE IK WORKS benver Q 1 COLO RT national af 1 blev BUILDING kl ADDRESS J NV BUILDING j 9 ix OLO 1 OW E SALT SAL r L LAKE K C CITY I 1 TY U UTAH H f 4 E fault DING j LONDON ENS LAND SALISBURY ty MOUSE wa odberg bros I 1 western metals smelters shelters Sm elters and refiners refinery Re finers I 1 company co pany L D foreman I 1 I 1 herbert offices pacific san francisco purchasers of gold silver and buyers 0 of base bullion platinum amalgam ZINC ZINC LEAD and MANGANESE ores concentrates copper ORES TUNG TUNGSTEN STENy plates recovered quicksilver BISMUTH molybdenum D E NUM etc and VANADIUM RARE ORES and METALS producers of fine gold and silver bars platinum sheet and wire I 1 correspondence solicited j I 1 Asia assaying ying and analyzing of all kinds of bullion i newhouse salt lake city minerals ores chemicals et etc 5 tin |