Swindle.] FORTYMILE REGION; 57 
claims. Two men were working on the creek, but could do little on 
account of the low water. 
Flume Creek. — This creek enters Seventymile from the south about 
45 miles by trail from Eagle. It heads several miles back in (lie hills 
and flows in a V-shaped valley, wh.'cb about a mile from the mouth 
becomes very narrow and is bounded by precipitous walls. About a 
half mile above the mouth the walls begin to recede from he stream, 
and at the mouth there is a flat about 300 feet in width. A quarter 
of a mile upstream this is bounded on the west by the face of a rock- 
cut bench, which lies about 20 feet higher than the creek and has a 
very even surface mantled with a few feet of gravel. 
The bed rock for about a mile above the mouth is greenstone and 
serpentine. Basic dikes are common. Above this formation are the 
metamorphic schists. The gravels at this point are mostly schist, but 
include a considerable proportion of large quartzite bowlders, green- 
stone, vein quartz, crystalline limestone, black chert conglomerate, 
and a rock which resembles granite, but is more closely related to a 
quartz-diorite. The rock is said to occur abundantly at the head of 
the stream. Flume Creek has been a favorite creek for prospecting. 
Some coarse gold has been found, and nuggets of considerable value 
have been reported. There are mineralized areas in the greenstone 
formation, one of which, hardly a mile above the mouth, has been 
somewhat prospected. At this place the rock contains many small 
quartz stringers, intersecting at various angles, and considerable 
pyrite. The oxidized zone, about 40 feet in width, can be traced 
across the creek to the opposite wall of the canyon, and strikes 
about N. 25° W. 
Benches. — The extensive benching which the valley of the Seventy- 
mile has undergone has been accompanied on the lower benches by the 
deposition of gravels. Large bodies of these gravels occur, and have 
been more or less prospected from time to time in the hope of finding 
extensive deposits sufficiently rich to pay for working on a large 
scale. Some work was in progress on them during 1903. Prospect- 
ing requires much time and systematic work before the values of the 
gravel can be determined. 
In conclusion, it may be said that there are a few of the tributaries 
of Seventymile that have produced good pay and are still producing a 
small quantity of gold, and that there are extensive deposits of gr.ivel 
along the main stream, some of which are known to contain gold, but 
none of which have had their distribution and values accurately 
determined. Up to the present time apparently no results have been 
obtained through the investigation of these gravels sufficient to jus- 
tify their working on an extensive scale. 
About 25 men were working on the Seventymile during the season 
of 1903. 
