December 2020 - No News Letter
November 2020 - No Speaker
October 2020 - Joe Cook and Brian Gootee - Landslides and Landslide Hazards along I-17 between Black Canyon City and Flagstaff, Arizona
September 2020 - AGS Social Hour
August 2020 - Mark Colbaugh - Renaissance Gold, Inc. on Silicon
July 2020 - No News Letter
June 2020 - No News Letter
May 2020 - Darren Smith - Rare Earth Elements: Mineralogy, Market, and Ashram, A Rare Earth Carbonatite Deposit
April 2020 - Philip M. Persson - The Detroit City Portal; A New Chapter in the Story of the Sweet Home Mine, Colorado, Rhodochrosite Mining
March 2020 - March Dinner Meeting Cancelled due to COVID-19
February 2020 - AGS - Social Hour
January 2020 - Jose Sanchez - Hexagon Integrated Portfolios