226 ALASKAN MINERAL RESOURCES IN 1906. 
Feet 
Clean sand 20 
Coal 
Sandy clays 2 
Cross-bedded gray sands and fine gravels 50 
Ferruginous sandstone 
Coal 
Thin-bedded sands 100 
Coal 10 
Sticky clay 25 
Total coal, 45 feet. 
The valleys of these two creeks contain a large amount of coal. 
The conditions for transportation in the absence of a railroad are bad. 
The Cantwell is an unnavigable stream and the locality is about 50 
miles south of the Tanana. It would seem that if the developments 
in the Fairbanks region should justify it the energy of these coals 
might best be transported in the form of electricity. The distance 
across country to Fairbanks, about 75 miles, is well within the prac- 
ticable limits of such an undertaking. 
OTHER AREAS. 
In the area to the east wherever these deposits are cut to a suffi- 
cient depth the coal-bearing beds are exposed. They occur on Coal I 
Creek, a small tributary of Totatlanika Creek, where they are used 
to a slight extent by the miners, and on Mystic Creek, about 2 miles 
from Wood River, where two beds 20 feet and 12 feet thick were ' 
exposed in a section 80 feet high. They are reported to occur also I 
east of Wood River. There are approximately 600 square miles of I 
these younger deposits between Cantwell and Wood rivers. To what i j 
extent they are underlain by coal has of course not been determined. 
The coal-bearing beds, too, probably vary greatly in number and: 
thickness and furthermore have been in many places burned. The 
continuations of the coal beds of Healy Creek outcrop on the west side I 
of Cantwell River, and it is very probable that there is considerable | 
coal between Cantwell and Toklat rivers. Coal occurs farther to the 
southwest in local disconnected areas, and in the Kantishna region 
is used to a small extent. 
