Softback
ISBN: 0931913225
by C. M Hoke, 1940, 362 pages, (Softback)
This book does not cover assaying of metals but does cover in detail the secondary refining of precious metals to permit their further employment in art, science, and industry.
How to recover the precious metals from wastes products of jewelers, dentists, photographers, electroplating, stripping solutions. Covers the equipment, chemicals, and procedures used, as well as the economics of refining the various kinds of wastes. Identifying metals in solution. Also discusses rhodium, ruthenium, and osmium.