Description: Process which uses microorganisms for the recovery of precious metals from metal-containing processes and streams. This technology is targeted at using naturally-occurring, sulfate-reducing bacteria for the recovery of gold and silver from ores, instead of the more traditional -- and more toxic -- cyanidation process. How it works: Step 1: Aerobic bacteria catalyze bio-oxidation of low-grade, hard to treat (refractory), sulfidic gold ore. This step is currently being adopted by gold producers for freeing gold …showed first 75 words of 515 total…

…showed last 75 words of 515 total…this novel bisulfide leaching process to perform amenability testing on bio-oxidized ore samples. We are open to negotiating an R&D evaluation license with either a single company or with a consortium of companies, allowing a credit against future royalties for any investment made in process development. We will also grant a nonexclusive, royalty-free license to practice our patents to the first company to build and successfully operate a full-scale plant based on our technology.