34 
ALASKAN MINERAL RESOURCES IN 1901. 
[BULL. 259. 
The methods of working the alluvial gold deposits are shown in the 
following table: 
Methods of working alluvial gold deposits in Alaska. 
Class of placers. 
Method of working. 
Creek placers 
Hydraulicking. 
Hydraulicking with hydraulic elevator. 
Dredging. 
Open cutting, separate stripping, « and shoveling in. b 
Open cutting, separate stripping, and horse scraping. 
Open cutting, separate stripping, and steam scraping. 
Open cutting, separate stripping, wheeling, and cable tram. 
Open cutting, separate stripping, and steam shovel. 
Open cutting, separate stripping, track system, and incline. 
Open cutting, separate stripping, track system, and hy- 
draulic elevator. 
Open cutting, separate stripping, track system, and der- 
ricking. 
Open cutting, separate stripping, skidding, and derricking. 
Shaft, drifting, and timbering. 
Shaft, thawing, and drifting. 
Hillside plaeers c 
By the same methods as creek claims. 
Bench plaeers (l 
Hydraulicking. 
Open cutting, separate stripping, and shoveling in. 
Open cutting, separate stripping, and horse scraping. 
Shaft or adit, drifting, and timbering. 
Shaft or adit, thawing, drifting, little timbering. 
River- bar placers 6 
Hydraulicking with hydraulic elevator. 
Dredging. 
Open cutting, steam shovel. 
a Charged to independent account. The stripping generally consists of frozen " muck," a mixture 
of silt and ice, which is ground-sluiced off. 
b Covers shoveling into boxes and ground sluice, and rocker work. 
c Detritus varying from 3 to 60 feet in thickness. 
d Detritus varying from 5 to 150 feet in thickness; in parts of the Seward Peninsula to 230 feet, 
e Detritus from 3 to 60 feet in thickness. 
