86 _ GEOLOGICAL SURVEY OF ALABAMA. 
MS 
[McGill or Helena seam, in section 26, township 16, S., range 1, east): 
THINLY LAMINATED SANOSTONE 
2FEET I INCHES Go00D HARD 
Ccofl 
loincHes BLUISH SLATE 
SINCHES COAL 
aw Bo7TOm SLATE 
Near Helena is a seam that outcrops under the pump 
that supplies the coke ovens with water, and named in con- 
sequence the Pump Seam, and the following is a measured 
section of the same seam in section 26, township 16, range 
1 east, in the Henryellen basin: 
[Pump seam, (under Mammoth,) in section 26, township 16,8 , range 1, 
east): 
2S er VERY CORASE MASSIVE SANOSTONE 
2FEET SLATY SANOSTONE 
B FEET @INcHES COAL 
/ Foor GiNcHEs SLATE 
| Foor 91INeHEes COAL 
Borzjfom slLATE 
The Henryellen basin contains an aggregate of good 
workable coal of 881,000,000 of tons of 2,000 pounds. My 
computation and estimates were made on the basis of in- 
cluding all coal of two feet in thickness and upwards, and 
all within forty-two hundred feet in vertical depth, but I 
have made no allowance for loss or waste in pillars or 
otherwise, in mining. 
