Advanced Dredging Techniques Part 1
Finding and Recovering Pay-streaks
Table of Contents
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Introduction
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17
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Pay-streaks, What They Are
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23
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Major Flood Storms
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23
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Different Kinds of Streambed Deposits
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29
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Tailrace & High Bench Bleed-offs
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29
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Pay-streaks
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31
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Single Deposits
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35
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The General Path of Gold
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37
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The Characteristics of Pay-streaks
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44
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How the Size of a Waterway can Affect Pay-streaks
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49
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The Boundaries of a Pay-streak
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51
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Flat Rocks
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58
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Natural / Virgin Streambeds
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59
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Sampling is the Key to Success
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63
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Dredge Size
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64
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Choosing an Area to Sample
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68
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Gathering Data
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74
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"No Gold" Reports
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81
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Exaggerated Data
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84
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Sampling Procedure
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86
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Reading Streambed Material
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90
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Depth of Material in Sampling
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96
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Sampling Difficulties & How to Overcome Them
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103
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False Certainties
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110
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Gold Dredging Procedure
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113
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Defining Acceptable Ground
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113
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Dredging Up Pay-streaks
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115
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Spotty Pay-streaks
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131
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Fine Gold Pay-streaks
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134
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Wasting Gold
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136
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"It Has Already Been Dredged!"
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137
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Dredge Sizes & Suction Hose
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143
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Fast Water
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145
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Fast Water Harness
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150
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Maintenance and Repairs
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152
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Dealing with Gold, Claims, & Partners
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153
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Splitting Up Gold
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162
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Dealing with Claims
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164
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Percentage Deals
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167
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Keeping Quiet
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170
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Integrity & Gold
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171
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Group Dredging
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177
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Partnerships
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179
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Partnership Deals
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180
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Grubstaking
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182
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Over-manning an Operation
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185
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Watch Out for the Con Artist!
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189
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Buying Claims
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189
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Buying Used Dredging Equipment
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191
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Selling Your Gold
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192
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Advanced Recovery Systems
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195
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Riffles & Classification
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197
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Larger-sized Dredges
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205
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Triple-sluice Recovery Systems
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206
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Double-sluice Recovery Systems
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210
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Screened-over Riffles
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212
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High-grade Riffles
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215
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A Few Other Points on Recovery
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216
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Dual Eductors & Gold
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216
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Flared Jets & Gold
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218
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Alaskan Dampers
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219
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Miner's Moss
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219
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Sun Screen Riffles
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220
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Glossary
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221
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