From the AUM news release:

Mr. Rehn has been with Golden Minerals since February 2012, most recently serving as Senior Vice President of Exploration and Chief Geologist. He has more than 30 years of mineral exploration experience and has worked as an exploration geologist or in related roles for companies including Barrick Gold, Placer Dome, Bear Creek Mining, Cyprus Amax, Noranda and Gold Fields Mining. Mr. Rehn holds a Bachelor of Science Degree in Geological Engineering from the University of Idaho and a Master of Science in Geology from the Colorado School of Mines.