Underground mining at the site began in 1882, and continued until 1931.
"During the period from 1882 to the cessation of operations in 1931, the Old Dominion and the United Globe mines [both owned at that time by Phelps Dodge & Co.] produced approximately 765 million pounds of copper, 89,480 ounces of gold, and 4,536,000 ounces of silver having a total value of about $125 million."
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{{Information |Description=Old Dominion Mine enjoys a rich history. Underground mining at the site began in 1882 and continued until 1931. During its half-century of operation, the mine produced about 765 million pounds of copper, 89,000 ounces of gold an