CONTENTS. 
Page. 
ldministrative report, by Alfred H. Brooks 1] 
Preface 11 
Progress of surveys 12 
Introduction 12 
Geographic distribution of investigations ]3 
General ' „. 13 
Southeastern Alaska 14 
Yakutat-Alsek region 15 
Controller Bay region 15 
Cook Inlet region 15 
Seward Peninsula 1G 
Yukon district 16 
Publications issued in 1906 17 
Reports in preparation 17 
'he mining industry in 1906, by Alfred H. Brooks 19 
Foreword 19 
Statistics 20 
Transportation 21 
Distribution of precious metals 22 
Lode mining 26 
Introduction 26 
Statistics 26 
Lode districts 27 
York tin region 28 
Antimony 30 
Placer mining 31 
Introduction 31 
Methods 31 
Placer mining, by districts 33 
Pacific coast region 34 
Seward Peninsula 34 
Yukon basin 35 
Fairbanks 35 
Rampart district 37 
Koyukuk district 38 
Fortymile region 38 
i Alaska coal fields, by G. C. Martin 40 
Introduction 40 
Distribution and area 40 
Geology of the coal-bearing rocks 41 
Occurrence of coal 43 
Pacific coast region 43 
Interior region 44 
Bering Sea and Arctic slope 44 
