CONTENTS 
Letter of transmittal 11 
Introduction 13 
Itinerary 13 
Field methods 14 
Acknowledgments 25 
General statement of conditions 25 
Classification of alluvial gold deposits in Alaska 27 
Methods of mining, and conditions 29 
Cost of mining 34 
Prospecting 39 
Cost of prospecting in different localities ■ 41 
Results of prospecting 42 
Water supply 43 
Climatic conditions 43 
Stream volumes 49 
The miner's inch 51 
Table of stream volumes 52 
Grades of streams 53 
Open-cut mining 55 
Introduction 55 
Rocker and long torn 55 
Shoveling into sluice boxes 56 
Conditions for shoveling 56 
Dams 56 
Drains 57 
Cost of shoveling 58 
Horse scraping into sluice boxes 60 
Steam scrapers 61 
Self-dumping carriers 65 
Derricking 67 
Tracks and inclines 71 
Steam shovel 73 
Drift mining 82 
Introduction 82 
Drifting and timbering .' 83 
Thawing 88 
Hoisting 94 
Drifting in the Fairbanks district 96 
Hydraulic mining 99 
General remarks 99 
Ditches, flumes, and reservoirs 1 03 
South Coast province 113 
Interior 117 
Seward Peninsula 120 
