Higher-grade ore is heap-leached within the pit, with the leach liquor being pumped up to the solvent-extraction plant.
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Phelps Dodge's Morenci operations are in south Arizona, 250km south-east of... -
An electric mining shovel and its trucks in the pit bottom. -
A P&H 2800 mining shovel loading a Caterpillar 973 hauler. -
Hauling waste rock to backfill the worked-out pit requires a big truck fleet. -
One of Morenci's Caterpillar 797, 272t (300st) capacity mechanical-drive haul... -
Higher-grade ore is heap-leached within the pit. -
Low-grade ore is ball-milled before being agglomerated and dump-leached.
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