Richard Gray

About Richard Gray

Making public, my knowledge and experience to replace Cyanide(Poison) in the Gold mining…

Experience

1. Principal Scientist

   Chemistry Research & Development

   Jan 1994 — Present · Tucson, AZ, US

   I support a (non-ammoniacal) Thiosulfate Leach Process to replace the standard one that has ammonia in it. The ammonia in the process along with the early 80s recession ruined an attempt with Goldfields South Africa to use the process down in the mine stopes to collect all the stray Gold as this process is not poisonous like cyanide. But ammonia is not good to have down in a mine either. But a non-ammoniacal thiosulfate leach could be used there, and for heap leaching etc as the leach with a substituted amine like ethanolamine has low volatility and safe! Use alkamines and other amines to replace the ammonia! Gold has gained so much value that I believe all Gold(and Platinum Group) Leaching should switch to non cyanide systems which will save animal and Human lives and save plants and help save the planet! W.R.G.

Education

• Lewis University

  Chemistry, B.S. 1961

  1957 — 1961

• Lewis University

  B.S. Chemistry

  1957 — 1961

Skills

• Materials
• Heterocyclic Chemistry
• Science
• Research
• Peptides
• Ir
• Engineering
• Parallel Synthesis
• Bioconjugation
• Materials Science
• Fluorescence Spectroscopy
• Copper
• Organometallic Chemistry
• Cement
• Structure Elucidation
• Molecular Modeling
• Scifinder
• Inorganic Chemistry
• Project Management
• Laboratory
• Mineral Exploration
• X-Ray Crystallography
• Flash Chromatography
• Heterogeneous Catalysis
• Inorganic Synthesis
• Combinatorial Chemistry
• Microsoft Office
• Physical Chemistry
• Kinases
• Photochemistry
• Gold
• Characterization
• Small Molecules
• Powder X-Ray Diffraction
• Carbohydrate Chemistry
• Factory
• Analytical Chemistry
• Homogeneous Catalysis
• Mining
• Synthetic Organic Chemistry