Thom Seal, P.E.

Barrick Gold Corporation Associate Professor of Mining, Mineral Processing and Metallurgical Engineering, Director of the Institute for Mineral Resource Studies
Thom Seal

Contact Information


  • Professional Engineer (PE) – Mining – Mineral Processing Nevada - 2002
  • Ph.D. University of Idaho – Moscow, Idaho: Mining Engineering – Metallurgy – 2004
  • M.S. University of Idaho – Moscow, Idaho: Metallurgical Engineering – 1988
  • B.S. Oregon State – Corvallis, Oregon: General Science; Environmental Chemistry – 1975

Research Interests

  • Acid Rock Drainage - Insitu Treatment
  • Mercury Abatement - Process development for Hg removal in mineral processes to reduce environmental impact
  • 4-D Heap Leaching (3-D with time) via Hydro-Jex©
  • Modeling Heap Leach Recovery
  • Rock Dump and Heap insitu drying
  • Cu leaching with IX and electrowinning
  • As removal from drinking water via electrochemistry
  • Property Evaluation and process development
  • Use of Biooxidation for cellulose oxidation to sugars for EtOH production
  • Biomass gasification for flotation reagent production and byproduct liquid and gas fuel production
  • Hydrometallurgy leaching of Pb and Zn with recovery
  • New reactor designs, including Hydro, Biohydro and Electrometallurgy

Professional Activities

  • SME Registered Member
  • SME PE Committee Member
  • Eastern Oregon Mining Association
  • Board of Director - Eastern Oregon Mining Association
  • Director of the Institute for Mineral Resource Studies

Relevant Past Experience

  • Newmont Mining Corp - Manager of Metallurgical Technology & Senior Metallurgist
  • Inventor of the Hydro-Jex Technology
  • Professional Engineer - Nevada: Mining - Mineral Process Engineer
  • Mining and Metallurgical Qualified Person for 43-101
  • Mining and Engineering work in Canada, South America, Africa, Alaska and Western USA
  • MSHA Miner

Courses Taught - Some Online

  • Heap Leach Design and Optimization
  • Hydrometallurgy
  • Pyrometallurgy
  • Precious Metal Metallurgy
  • Metal Recycling


  • Open Pit Ore Control for Cyanide Heap Leaching - SME 2000
  • Reduction of Gold Inventory in Cyanide Heap Leaching - SME 2005
  • HYDRO-JEX: Heap Leach Pad Stimulation Technology: Ready for World Wide Industrial Adoption? - SME 2007
  • Integrating Hydro-Fracturing Technology and Geophysics into 3D Mapping and Extraction of Metals in Heap Leaching; HYDRO-JEX and High Resolution Resistivity™ - SME 2008