42 FORTYMILE, BIRCH CREEK, AND FAIRBANKS PLACERS, [bull. 251. 
in connection with canvas hose give sufficient head to strip the muck 
from the surface of the gravel, so that it can be reached and shov- 
eled directly into the sluice boxes. The open-cut method is being 
introduced. For this the grade of the creek necessitates a bed-rockj 
drain 700 feet or more in length. The muck, perhaps 7 feet thick, ia 
stripped by ground sluicing and the gravel shoveled in. 
As much of the best ground has been worked out, development id 
being carried laterally to the benches, which may furnish consider- 
able gold. The difficulty, however, is to get sufficient water, the seaj 
son of 1903 being a particularly bad one in this respect. The output) 
for the year 1902-3 was generally supposed to be about $50,000, and 
the expense of working probably absorbed from 40 to 50 per cent oi 
this amount. About 50 men were at work on the creek, and wa gel 
were $5 and board. 
Walker Fork and neighboring localities. — The area of economic 
interest on Walker Fork is in the far southeast corner of the Forty] 
mile quadrangle (PL VII) and extends from the boundary nearly tJ 
Cherry Creek, a distance of about 4 miles. It is reached from Wadl 
Creek by a good trail of about 14 miles along the ridge, and also fronri 
points on the Canadian side, whence the supplies are general! 
obtained. 
The headwaters of Walker Fork are small streams having the! 
sources in the divide about a mile within Canadian territory 
Poker and DaAds creeks, which are the most important of the! 
small streams, have narrow V -shaped valleys. Poker Creek flow 
directly west, about 1 mile of its short valley being on the Ameri 
can side. Davis Creek flows southwest in a similar valley and join 
Walker Fork about one-fourth of a mile below Poker; it head 
just beyond the boundary, about 1^ miles of its valley being on th 
American side. Both were described by Goodrich in Spurr's report. 
The course of Walker Fork below Da\ds is westerly, with a fall o 
about 100 feet to the mile. The valley is bounded on the north by 
dome 3,380 feet high and to the south by a spur which descenc 
gradually from an altitude of over 4,000 feet and terminates jus 
south of the creek in a benched surface 400 feet high. The valley : 
about 2,000 feet above sea level and is unsymmetrical in cross se< 
tion. Across the valley to the north the rise to the plateau level 
about 3,000 feet is gradual and there is a bench corresponding to tl 
one on the south. The slopes are covered with a light growth 
small spruce, and the valley floor in places has produced timber 
sufficient size for mining purposes. 
The bed rock, similar to that of Wade Creek, includes quartziti 
schists, graphitic schists, and garnet-hornblende-schists. ' Strike 
° Spurr, J. E., Geology of the Yukon gold district : Eighteenth Ann. Kept. U. S. Gefll 
Survey, pt. 3, pp. 326-331. 
