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Show GENIUS... Ati HEALTH AHP SAFETY FACTORS I IN MINE OPERATIONS AT THE MAGMA J COPPER COMPANY MHES, SUPERIOR w ARIZONA, BROUGHT ABOUT THE FRST , AR CONPTIONEP MIIVE N NORTH AMERICA . 1- tAji C&th the rock tempera- -Vn? JT4 TURE STAMPING ATO S I prSS AT THE 3,600 FOOT CEYEL, I J fVi SHORT SHIFTS WERE NECESSARY "Sr ? ' w VALUABLE WORK TIME Vlfl Cm BEING LOST BECAUSE OF THE V V NEEP TO CONSTANTLY TRANS J 'Jrt ' PORT WORKERS IN ANP OUT OF '' f J "V THE TDRRIC' MIN SNAFTS. Vf VV?'SW. CALLING ON THE EXPERTISE OF A AN OP. WILLIS H. CARRIER, THE MAGMA L' 7 fT. COMPANY INSTALLEP THE FIRST VO ':' AIR CONPITONING SYSTEM : v PESIGNEP FOR UNPERGROUNP ' USE IN 1937. PESIGNATEP A NATIONAL HISTORIC MECHANICAL ENGINEERING LANPUARK ON MAY 21, 1976, THE MAGMA COPPER MINE WAS HONOREP IN RECOGNITION OF CARRIER'S ENGINEERING PEAT, BY REPUCNG THE TEMPERATURE FROM ""V IOI F TO 85', MINING WAS MACE EASIER, fvv): PROPUCT'or exFAvc?iP- Xl THE AMERICAN SOCIETY Of MECHANICAL ENGINEERS. |