These scans from the book are of marginal quality but they mat be useful.
Placer Sample Field Record
Placer Sample Processing Record
Placer Sample Data Summary Sheet
Field Log
Publication Info:
Placer Examination - Principles and Practice
Technical Bulletin 4 Bureau of Land Management 1969
Table of Contents
Placer Examination - Principles and Practice
Technical Bulletin 4 Bureau of Land Management 1969
Table of Contents
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