Plymouth, CA…Advanced Materials Processing, Inc. (AMPI) announced the award of their patent for cleaning mine waste and using the resulting deep-core earth as a source for natural fertilizer. Effective July 19, the patent covers the company’s unique, non-toxic process that will extract mercury from mine waste. The process also extracts precious metals like arsenic, gold, silver, lead and cadmium, leaving behind earth that is rich … Continue reading Turning Mine Waste Into Bio-Mineral Fertilizer