880 GEOLOGY OF OHIO. 
mined out from the Clark farm, two miles east of Zanesville, but the 
adjacent land of Adam Rock holds a small acreage on which mining is 
still going forward. Throughout this whole district, the coal lies very 
shallow. A great deal of it is got by stripping, and where mining is 
undertaken the character of the work is everywhere limited by the 
weakness and treachery of the cover. 
The coal ranges from 3 to 5% feet in thickness. The structure of 
the seam on the Alexander farm is shown below: | 
FLEURE LX XAWa 
STRUCTURE OF UPPER FREEPORT COAL 
ON THE ALEXANDER FARM. 
Slaty Cook, vejectedy.---—-- 
Coolliinesiemararaniad paved eaainy 
Slate paubiwg hee Bata | 
Coal eee moma Sass eee sei 
7 /* 
Slate pavcbinng io ole ti/ 4 
C ool 2S eS eee een ee) : 
Slate poe van Claud seawmy y : 
Coal 5 Cae ain bends ——-——— if | 
ests wilt. chebntvaleaa PM teal Smeal 
4 
Five-cl OY ~~ th Dain 
\uimmestbone ___. 
The numerous partings in the seam render it a dirty coal. To 
compete in the general market it would require thorough screening. The 
coal has a good name where it is used, but the limitations of area and 
of cover will prevent this immediate district from becoming any more 
important as a mining center than it now is. 
Southward, throughout the northern half of Salt Creek township, 
the coal is frequently found of good volume, and is worked in many 
local banks. It is known as a four-foot seam. A considerable acreage, 
no doubt, exists here. 
The same thing can be said of Wayne township. Near Duncan’s 
Falls, a number of small mines are opened in this coal. The general 
thickness of the seam is 4 feet, and in quality it holds to the usual 
standard. 
