Show H kenyon burch who designed and built the wills mills for the miami copper company and the inspiration consolidated copper company is now working out the process to be used in the milling of the copper ore from the famous old sacramento hill at the entrance of bisbee canyon at bisbee Ar arizona izena the phelps dodge corporation is working this mountain of low grade copper ore by steam shovel mining in the same manner as the utah copper mine is worked the overburden on the sacramento hill however is quite thick and it will be some time before the ore body proper is uncovered and the ore is ready for mining milling the new mill which will be a large one will be located on oil the side of the hill near warren arizona |