METRO WEEK: Gem Shows Big Contributors to Economy, UA Research
$120 million economic impact, international research collaboration opportunities from big winter event.
State Issues Its OKs on Rosemont Water Quality
Decision now moves to federal level - Forest Service and Army Corps of Engineers.
Supply-Demand Driving Arizona Turquoise Prices
Change in mining regulations abd techniques, growth of Chinese middle class putting pressure on availability.
Orange Sludge Spill from Abandoned Mines Threatening Patagonia Lake
Local environmental officials say Asarco's cleanup efforts not good enough, cite company.
Mexican Copper Mine Contamination Spills Into San Pedro River
Authorities in northern Mexico issue a binational alert over mine water leakage in creeks, streams.
