Mr. Zellner received his undergraduate degree in Chemistry with a minor in Geology from the University of California Santa Barbara before obtaining a master’s degree in Mining Engineering from the Colorado School of Mines. Before working at Global Resource Engineering Mr. Zellner worked at a solution mining company and at an underground construction and tunneling company. He has professional experience with geologic modelling, mineral resource estimation, mine planning, open pit mine design, underground mine design, cost estimation, technical report writing, and economic analysis. He is proficient in AutoCAD, Whittle, Leapfrog3D, and Carlson. His field experience includes installation of geotechnical instrumentation, supervising geotechnical drilling, slope stability investigation, construction observation and testing, and surveying.