Gary Petersen is a seasoned mining engineering professional with extensive experience in mine planning and operations management. Currently serving as a Sr. Staff Engineer at RESPEC since June 2025, Gary has previously held key positions including Superintendent Mine Planning and Mine Engineer at AngloGold Ashanti, and Operations Manager and Mine Manager at U.S. Silica Company. Gary's tenure at Freeport-McMoRan included leadership as a Senior Mine Planning Engineer, overseeing a team and coordinating various engineering functions. Earlier roles at Barrick Mining Corporation focused on short range planning and leach stacking, where Gary developed innovative systems for production optimization. Gary holds a Bachelor of Science in Mining Engineering, cum laude, from the University of Arizona.
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