Mitsubishi is shelling out nearly $600 million as a joint venture partner for an expanded copper mine project in Arizona.

To get to Clifton, you have to really want to get to Clifton. The nearest big city is Tucson, about three hours away. After spending the night at an uncharacteristically ratty Holiday Inn Express in ...

The Johnson Camp Mine in Cochise County has reopened through a partnership between British-Australian mining company Nuton ...

James Colquhoun, a skilled metallurgist renowned for his innovation in porphyry copper production, started out as an assayer for the Arizona Copper Co. and also for non-company affiliates. He charged ...

As the Arizona Trail winds past the proposed Oak Flat copper mine, the search for climate solutions takes on new meaning.

TUCSON, Ariz., Dec. 4, 2025 /PRNewswire/ -- A fourth annual survey, released in partnership by the Arizona Mining Association and the University of Arizona School of Mining Engineering & Mineral ...

Spanning over 60,000 acres, the Morenci copper mine in eastern Arizona — one of the largest-open-pit mines in the world — produces hundreds of millions of tons of copper ore each year. But the steep ...

A “Hold” Rating for Shares of Arizona Metals Corp. In this analysis, we reiterate our “Hold” rating on the US-listed shares of Arizona Metals Corp. (OTCQX:AZMCF). This rating is consistent with our ...

Follow a hidden Arizona trail that takes you to a little-known ghost town, where history and desert landscapes create a ...

Arizona mining districts originated prior to the formation of Arizona as a territory in 1863. Except for having to pay tribute to a monarch, these self-governing regulations followed the tradition of ...