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<br /> MarkA.Williamson, Ph.D AddanBrown
<br /> Principal Geochemist
<br /> Education
<br /> B.S.,Chemistry, Old Dominion University, 1983
<br /> M.S., Chemistry,Northern Arizona University, 1990
<br /> Ph.D., Geochemistry,Virginia Polytechnic Institute&State University, 1992
<br /> Industry Training
<br /> OSHA 40-Hour Hazardous Waste Worker
<br /> MSHA Certified Surface Miner
<br /> MSHA Certified Underground Miner
<br /> Experience
<br /> Geochemist/Laboratory Director,Adrian Brown Consultants, Inc.,Denver, CO, 1992-present
<br /> -quantitative geochemical evaluation of surface and groundwater, including sample collection and
<br /> analysis. Specialist consultant on matters pertaining to acid mine drainage formation,impact and
<br /> mitigation. Supervisor of geochemical laboratory facility.
<br /> Virginia Polytechnic Institute and State University, Blacksburg, Virginia 1988-1992
<br /> -graduate Research\Teaching Assistant, Department of Geological Sciences. Responsible for lab
<br /> sections of Physical Geology for Engineers,metallic and non-metallic mineral deposits.
<br /> ARCO Oil and Gas Company, Geochemical Exploration Group, Plano, Texas, 1990
<br /> -conducted research on the geochemical systematics in surficial sediments of the Gulf of Mexico.
<br /> Northern Arizona University, Flagstaff, Arizona, 1988
<br /> -chemical Instrumentation Laboratory Supervisor, responsible for operation of all departmental
<br /> instrumentation, teaching and supervising operation by faculty and students;performing preventative
<br /> maintenance and minor repair.
<br /> Tidewater Community College, Virginia Beach, Virginia, 1983-1984
<br /> -chemistry Instructor,lecture and laboratory.
<br /> Professional Affiliations Dissertation
<br /> Member,The Geochemical Society Thermodynamic and kinetic studies of sulfur geochemistry.
<br /> Member,international Union of Applied Geochemistry and Ph.D.dissertation,Virginia Polytechnic institute and State
<br /> Cosmochemistry University,Blacksburg,Virginia.
<br /> Member,The American Chemical Society,Geochemical Publications
<br /> Division
<br /> Member,Sigma Xi,The National Scientific Research Society Peer-Reviewed Journals
<br /> Member,The New Mexico Geological Society Williamson Mark A.and Rimstidt,I Donald_ "the kinetics and
<br /> Thesis electrochemical rate determining step for aqueous pyrite
<br /> Metal diagenesis in the near-neutral sediments of high oxidation." Geochim.Cosmochim.Acta.,(58)1995: 5443-
<br /> elevation take,White Mountains,east-central Arizona MS 5454.
<br /> Thesis,Northern Arizona University,Flagstaff,Arizona. Williamson Mark A.,Kirby Carl S.and Rtmstidt,I Donald and
<br /> Nordstrom,D.K. "Quantitative comparison of iron and pyrite
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