Like many copper mining towns in Arizona, Ray was booming in its heyday. Ray — about 90 miles north of Tucson and 80 miles east of Phoenix — was the largest town in Pinal County in 1914, with a ...
Ajo, in western Pima County 125 miles west of Tucson, has one of Arizona’s best-known porphyry copper deposits. It enticed small mining operations by the San Francisco syndicate known as the American ...
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