If you like Recovery and refining of precious metals
C. W. Ammen
Publishers Note: A hands-on practical guide to performing various operations in assaying and extracting, qualitative and quantitative analysis, refining, classifying, and concentrating precious metals, either from primary sources such as ore and black sand or from secondary sources such as scrap jewelry and old film. Intended for professionals, semi-professionals, or hobbyists with or without a background in chemistr…
