Arizona Gold Report September 11, 2012 | Arizona Geological Survey "The decade-long rise in the price of gold from less than $400 per troy ounce... Arizona Metal Mining March 19, 2012 | ArizonaExperience.org Arizona as a State ranks #1 for its copper production, #2 for molybdenum, #5 for... A Longwall Mine for Potash? February 11, 2013 | Arizona Geology Blog Lee Allison reports on two proposed underground potash mines in Arizona. One could employ... Small Investors: Be Careful Buying Gold Mines and Oil Wells July 5, 2012 | Arizona Geology Buying into a gold mine or an oil well sounds like a great way to... Gold Mines, Geology, Investing and Politics July 2, 2012 | BusinessInsider.com An article on the BusinessInsider.com website considers geological, political and economic factors related to investing... Does Arizona Have Earthquakes? October 4, 2012 | Arizona Geological Survey "Each time an earthquake occurs in Arizona, the news media and public asks, “Does Arizona... 20 Percent of USA Coal is from 2 Mines April 7, 2013 | Energy Information Administration Two large coal mines in Wyoming accounted for 20% of United States coal production in... Sinkholes in Arizona March 10, 2013 | Tucson Citizen The Tucson Citizen has an article about sinkholes in Arizona. Like in Florida, karst... |