VAP-BK-0008 Refinning Precious Metal Wastes by C.M.Hoke

This book is the result of many years of teaching jewelers and
others how to refine their precious metal wastes. Instructions
start with tasks that are easy to understand and perform,
assuming that the reader has never seen the process of refining.
They continue through more complicated methods of handling
various types of waste. Hardcover, 362 pages.