Cleaning up neglected mine sites could cost from $75 to $100 million. A state fund that was created to boost cleanup sits empty.

A grant from the Freeport-McMoRan Foundation will support the University of Arizona in developing K-12 programs that educate ...

The tribe said the drilling could permanently damage its ancestral lands and waters in the Big Sandy River area near Wikeiup.

In October, we told you about the "Battle of the Robs." In the midst of a divisive election season, these two neighbors went head-to-head, but in a different way. Now that the ballots have been cast, ...

After being above $50 recently, copper, gold, and molybdenum miner Freeport McMoRan's (NYSE: FCX) stock has dipped to about ...

It believes it can grow production at a mine in Bagdad ... out pre-feasibility study work on an expansion project in Safford, Arizona, that could more than double its existing production of ...

Milling inefficiency in the US was offset by full-capacity operations in South America and excellent low-cost mining in Indonesia ... is down 14% YoY, and Safford (Lone Star deposit) is not ...

(the "Company" or "Arizona Metals") has drilled a discovery hole in a new lens of mineralization in the Kay deposit on the Kay Mine Project (the "Kay Project" or the "Property") in Arizona. The drill ...

At first, you could "mine" Bitcoins using just the central processing unit of home computers. The mining process became quickly competitive, and faster Graphics Processing Units (GPUs) were used.

TSX-V-listed Minera Alamos has announced the acquisition of the past-producing Copperstone mine, in Arizona, diversifying its jurisdictional exposure with the addition of the US to its existing ...