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  • The Associated Press

Spinoff of oil and gas businesses would allow focus on copper, Phoenix-based Freeport says.

  • DAVID SANDERS / ARIZONA DAILY STAR 2011

As part of training in 2011, UA student Mark Iobst helped guide a drill bit by communicating with the operator (not pictured) of a single-boom…

  • Tony Davis Arizona Daily Star

A second straight year of dropping copper prices has done little to slake Southern Arizona's two biggest mining employers' thirst for new workers.

  • The Associated Press The Associated Press

NEW YORK - Companies are buying each other again.