Arizona A Case for Reinstating State Funding for the Arizona Geological Survey February 21, 2017 David F. Briggs
Environment/Nature Arizona Geological Survey: A Small But Important Agency March 22, 2016 David F. Briggs
Environment/Nature Environmental NGOs’ Efforts to Halt Rosemont Copper Project Threaten El Jefe February 7, 2016 David F. Briggs
Crime Gold King Mine – A Case of Russian Roulette with an Inevitable Outcome September 3, 2015 David F. Briggs
Home Anatomy of the Gold King Mine Spill – Was it Caused by an Ice Plug? August 18, 2015 David F. Briggs
