Saturday, February 24, 2018

The big hole in Ajo....

Millions of years ago this area used to be the core of a molten volcano and as luck would have it the magna was rich in copper and precious metals. Discovered in the 1920's, the New Cornelia Mine took about 60 years to dig out and extract 6 billion pounds of copper leaving a pit 1-1/2 mile wide and 1,100 feet deep, and required 300 miles of railway track to access the crater! Since its closure it's now become viable to reprocess the byproducts of the original refining process which cover a vast area (whitish on the satellite map), so large, that it is one of the only three visible man made objects from space!