After years of questionable and disputed yields from our outside refiners, in 1970 ETI decided that it would do its own Gold refining. A spinoff of this capability became Precious Metals Processing Consultants, Inc. (PMPC), a separate consultants whose major product is the renowned “Gold Bug” used for gold recovery around the world. http://www.preciousmetals-pmpc.com/
For the last 40 years, Epner Technology has done its own gold refining utilizing the remarkable gold and silver recovery system. A product of Precious Metals Processing Consultants, Inc.