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About Us

Paul O’Sullivan, Ph.D., Principal Manager and Chief Scientist
Andrea O'Sullivan, Administrative Manager
Jim McMillan, Facility Manager
Arron, Geological Technician

Rowan, Lab Assistant/Technician

Bailie, Lab Assistant
Preston, Lab Assistant

Technical Personnel
Our GSS-trained technical personnel have a combined 13+ years of experience with mineral separation procedures. GSS has processed thousands of samples. Our technical personnel follow defined Standard Operating Procedures (SOPs) when carrying out the various stages of sample processing. We are all dedicated to providing the highest quality mineral separations and pay close attention to detail through every step of the process.

Jim and Rowan at 2021 GSA Connects meeting in Portland, WA

Andrea, Paul, Charlie, Jim, and Victoria at AGU 2017.