Carrizo Mountains
Uranium mining started in 1918 in the Carrizo Mountains as a byproduct of vanadium mining. The district is in Apache County, in the northeast corner of Arizona. The uranium and vanadium occur as carnotite in sandstone of the Salt Wash member of the Morrison Formation (Jurassic). Production stopped in 1921. Another period of mining took place from 1941 to 1966, producing 360,000 pounds (160 metric tons) of uranium oxide (U3O8).
Read more about this topic: Uranium Mining In Arizona
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“The mountains look on Marathon—
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For standing on the Persians’ grave,
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—George Gordon Noel Byron (1788–1824)