The 1960s Usher in a New Era for Mining and EMJ E MJ
Kenecott''s Ut Copper tabulates the Bingham Canyon orebody with a computer Economies of Scale Readers might be surprised to learn that EMJ was discussing the lowest cost per ton more than 50 years ago Most of the mining took place in openpit operations and the scaleup in size of the equipment used for openpit mining had been nothing short of phenomenal