Prospecting and Operating Small Gold Placers - copertina rigida, flessible

1936 copyright. Second Edition. John Wiley & Sons, Inc., 145 pages. 1 lbs. (7.5 x 5.25 x .5 inches Navy Hardcover with yellow lettering spine and gold pan with nuggets front cover). Title: Prospecting and Operating Small Gold Placers by William F. Boericke. ISBN#0471085146. Contents: How Placer Deposits Have Been Formed; Examining Placer Ground, Hints on Prospecting; Panning: Properties of Gold and Black Sands, Estimating the Value of Colors; The Rocker: It?s Construction and Operation; General Information on Sluicing; Sluice Box Construction, The Long-Tom, Types of Riffles; Methods of Working Placer Ground; Cleaning-Up: Recovery of Fine Gold From Black Sands, Undercurrents and Similar Devices; Use of Mercury in Placer Mining, Amalgamation, Reporting; Dry Placers; Placer Mining Machines; location of Placer mining Claims, Leasing, Sale of Placer Gold, Selling Placer Property. Gold Panning & Gold Mining, Treasure Hunting.