Western Mining History
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Miners pose by a three-ton piece of malachite and azurite from the Copper Queen Mine. The specimen was displayed at the Chicago World's Fair of 1893

Miners pose by a three-ton piece of malachite and azurite from the Copper Queen Mine. The specimen was displayed at the Chicago World's Fair of 1893
Miners pose by a three-ton piece of malachite and azurite from the Copper Queen Mine. The specimen was displayed at the Chicago World's Fair of 1893