Technical Bulletin No. 4 from the U.S. Department of Interior, Bureau of Land Management. Chapters on placer theory, types of placers, sampling and evaluation, sample washing equipment, panning and assay procedures, notes on general practice, glossary of terms. A good overview for anyone working placer material.
PLACER EXAMINATION, PRINCIPLES & PRACTICE
- Product Code: BOOK-PLACER
- Availability: In Stock
- Ex Tax: $22.95