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John B Hartsfield is an accomplished professional in the field of technical services and chemical engineering, currently serving as the Sr. Technical Services Manager at SI Group since August 2023. Previously, John held multiple prominent roles at Halliburton from March 2018 to July 2023, including Global Phase Separation Subject Matter Expert and Global R&D Technical Advisor. Prior to that, John was the Technical Services Manager at JACAM Chemicals LLC and worked at Baker Hughes, a GE company, as a Principal Engineer and Technical Advisor for North America Specialty Chemicals. John holds a Bachelor's Degree in Chemistry from the University of Louisiana at Lafayette.