Showing posts with label The Morenci Mine is the largest copper producer in North America and one of the largest open-pit copper operations in the world. Show all posts
Showing posts with label The Morenci Mine is the largest copper producer in North America and one of the largest open-pit copper operations in the world. Show all posts

Tuesday, September 8, 2026

The Morenci Mine is the largest copper producer in North America and one of the largest open-pit copper operations in the world,

my father was born near here in 1916. He was their 2nd of 5 kids to be born in the western States. I have a picture of him with fairly long blonde hair taken in 1918 while they were still living there. They didn't buy a house and land until 1927 in the Seattle, Washington area with a house and 2 1/2 acres of Black Cherry and Apple Trees and Boysenberries and Raspberries growing there. One of my first memories is walking out our back door there on their land and picking raspberries and learning how not at 2 or 3 years of age not to get stuck on the prickles of the raspberries as I picked them. I still love raspberries today starting with that experience around 1950 or 1951 then.
 
When I was 8 years old in 1956 my father drove my mother and I there to the Morenci Open pit copper mine to see where he was born then. They had really huge Ore trucks which are likely the biggest trucks of any kind I have ever seen height wise where the front tires were over 7 feet high or more
 
 
begin quote from AI Overview
Morenci Copper Mine, Arizona, USA - Mining Technology
The Morenci Mine is the largest copper producer in North America and one of the largest open-pit copper operations in the world, located in eastern Arizona near Clifton.
Overview and History
Commercial operations at the site began in 1871 as an underground mine by the Longfellow Mining Company before transitioning to an open-pit operation in 1937.
Today, the massive complex is operated and majority-owned by Freeport-McMoRan.
Scale and Operations
  • Dimensions: The massive pit spans thousands of acres, measuring roughly 3.4 miles wide from east to west and 4.6 miles long from north to south.
  • Depth: The expected final pit depth reaches approximately 4,450 feet, with elevations spanning from 1,800 feet at the bottom to 6,250 feet above sea level.
  • Extraction Methods: The site utilizes both conventional milling (concentrators for sulfide ores) and solution extraction/electrowinning (SX/EW) processing for acid-leached oxide ores.
  • Equipment: Operations run on a massive scale utilizing fleets of high-capacity haul trucks and electric shovels moving hundreds of thousands of metric tons of material daily.
  • Transportation: U.S. Route 191 runs directly through portions of the mining complex, and sections have been shifted over the years to accommodate ongoing pit expansion.
If you'd like, I can provide more details on:
The economic and employment impact on local Arizona communitiesSpecific copper production statistics and reservesThe technical SX/EW leaching process used on site
  • Freeport-McMoRan
    UNITED STATES - Freeport-McMoRan
    The Morenci operation consists of two concentrators capable of milling 132,000 metric tons of ore per day ・ 235-metric ton haul tr...
  • Wikipedia
    Morenci mine - Wikipedia
    History. The mine was established as an underground mine in 1871 by the Longfellow Mining Company and was converted into an open-p...
  • Mining Technology
    Morenci Copper Mine, Arizona, USA - Mining Technology
    May 26, 2023 — 13 electric rope shovels. A fleet of ancillary equipment including track dozers, wheel loaders, motor graders, backhoes, and water...
Show all