OAHABA OOAL FIELD: ACTON BASIN. 43 
[Eureka Company’s slope seam in section 18, township 19, S., range 2, 
W.: rate of dip 21°). 
SLATY SANOSTONE 
NAN A 
L 
FSH ES BEATE 
Mfoo7 slate, WiLL prosnaly 
BECOME HRRO ATA WORKING DEPTH 
BEET PINCHES COAL of Gooa guplizy 
\ HAR Borrom slave 
Some of the other seams are in good condition for work- 
ing; the Conglomerate seam is larger and better in this 
basin than it is at Helena. The Acton séam is large but 
rather impure ; the following is a section of it: 
[Acton seam in section 18, township 19, S., range ?, W). 
SL ATY SANOSTONE 
6iNceHES BLACK BONY COAL 
: 2FEET /OZINCHES COAL IN 
RSMALL CV BIC AL BLochs, Ao 
B CONTAINS LARGE No. of THIN PARTINGS 
; /Fooy COAL & BoNy COAL 
IW a 
Pena II/VCHEs HARD BONY COAL 
AAAVAAALT 3 2 INCHES BoTTOM SLATE 
PASSIVE COARSE SANOSTONE 
On the wagon road from Caldwell’ Grist Mill by Wat- 
kin’s Gap to Birmingham, at a point about half a mile 
above Caldwell’s Mill, can be seen the flat measures of the 
anticlinal part of the basin. To the south of said mill 
about three-qurrters of a mile, the measures have a rate of 
dip of twenty degrees. The change in the rate of dip can 
be seen more plainly along the wagon road from Bishop’s 
Mill to Birmingham ; the measures becoming more steep as 
you approach the southeast boundary of the basin, in a 
similar way to the measures in the south end of the Henry- 
