artin.1 BERING RIVER COAL FIELD. 1 4T) 
Several prospect openings and two tunnels have been driven into 
he banks of Carbon Creek (tig. 9). One of the tunnels intersects two 
earns, the larger of which has a thickness of 8 feet of clean coal. 
?his is not the same as the Carbon Creek tunnel mentioned by the 
writer a in previous publications, and also below. The latter is about 
mile below this and cuts a seam 20 feet thick. 
Section in lower In mid on east bank of Carbon Creek. 
Feet, 
)ark shale 2 
mi 20 
lassive, arkosic, cross- bed (led sandstone, with many thin carbonaceous streaks. 10 
The strike at this point is N. 65° E. ; seam dips northwest at an 
ngle of 60° at the roof and at an angle of 78° at the floor. 
The valley of Shepherd Creek above the mouth of Carbon Creek 
as been more extensively prospected of late and proves to contain 
Suable coal. The 20i-foot seam at u Doyle camp," mentioned by 
le writer in an earlier publication, has been found to be cut off by a 
lult at the prospect opening and is of doubtful extent. Several 
nailer seams have been opened recently, of which the most promis- 
lg is the Charlotte seam, on the hillside southeast of Lake Charlotte 
\g. 9). 
Section of Charlotte seam. 
lale roof 
yd\ 
late 
3al 
lale and coal * 6 
The strike of the seam is N. 12° E. ; the dip is eastward at an angle 
' 72°. The same seam has been opened again about half a mile south of 
lis point. The coal in this seam is firmer and should stand shipment 
ith less crushing than any other seen by the writer in this field, but 
I one opening, at least, the amount of ash is excessive. 
The following section was measured in the lower part of the Shep- 
ird Creek Valley (fig. 9): 
n. 
n. 
10+ 

2 

5 
9 
6 
Section 1 mile northwest of Canoe Lin></in</ on Shepherd Creek. 
al.. 
ale. 
al.. 
't. 
in. 
3 


2 
4 
4 
The strike at this point is N-. 20° E. ; the dip is northwest at an 
ifigle of 65°. The opening is on the west side of the valley of Shep- 
ferd Creek, at an elevation of about 200 feet above Bering Lake. 
|The region adjoining the north shore of Bering Lake had been 
<:ploited to a considerable extent during the past season and a small 
... 
ipount of coal mined for local use. The seams so far discovered in this 
gion are smaller than those described from other parts of the field. 
"Bull. U. S. Geol. Survey No. 225, 1904, p. 372. 
Bull. 259—05 10 
