What lies in the deep?

Resolution Copper’s No. 10 Shaft in Superior, Arizona is the deepest single lift mine shaft in the United States at 6,943ft (1,979m)

What lies in the deep? What lies in the deep? What lies in the deep? What lies in the deep? What lies in the deep?

The project is jointly owned by Rio Tinto and BHP Billiton and aims to extract a deep porphyry deposit containing 1.

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