Browns Assaying Metallurgy Fire Assaying Mining Geology Book by Walter Lee Brown hex (200-300 Mesh) No longer do

(200-300 Mesh) No longer do you need to haul buckets of rocks home to crush not knowing if they hold Gold or not

The top is apx 9-1/2" long with the digging end being apx 4-1/2"

TO PREVENT "SYLICOSIS"

and Electrolytic means of recovery

- Easy to take on-the-go

Browns Assaying Metallurgy Fire Assaying Mining Geology Book by Walter Lee Brown hex (200-300 Mesh) No longer doBrown's Manual of Assaying was one of the leading assay guides for the miner and metallurgist back in the Late 1800's early 1900's. Many of the Assay methods are still used today. A copy of this book is on the shelves of most metallurgists and Assayers and referenced frequently. Covers Gold and Silver Ores, Copper Ores, Lead Ores, plus tips on spot testing ores, determination of sulfides, and minerals likely to carry gold. Lists of the principal gold,