COAL MINES OF MUSKINGUM COUNTY. 873 
Lower Kittanning Coal, No. 5, Zanesville. 
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IC CRCAT OMe ce ee ROCs Race selena Raaah cele wakindale cudellbbeacescecabees 49.96 
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The structure of the seam at this same bank is indicated in the 
following figure : 
FLGU RR WHEAT 
STRUCTURE OF LOWER KITTANNING 
CDAL(N25) HARPER'S MINE ZANESVILLE 
Main RCIA eee 
(Gavel) subp uv ballsQaean 
botbowr-Siruckves say above botibom) 
Bearimg ww slate----------- 
Wen I i eS eo ek ea . 
Neither the composition nor the structure given above would apply 
to eyery portion of the basin, but the figures probably do no injustice 
to the seam taken as a whole. 
A considerable area has already been worked out, but just how 
much it is impossible to say. Small mines worked irregularly and often 
with sole reference to immediate returns, have been driven under the 
hills at many points, and the outside coal is pretty largely cut away. 
To gain the remainder, it will soon be necessary to sink shafts into the 
unbroken coal. As to the extension of the seam to the south-eastward, 
under drainage, no facts are at hand, but the abrupt boundaries upon 
the open sides of the basin rather lead us to expect similar boundaries 
in the portiuns of the basin that are under cover. | 
There is but one other district of the county in which this seam is 
extensively mined. In Newton township, in the south-western corner 
of the county, a valuable field of the Lower Kittanning coal has long 
been worked. It is here known as the lower Del Carbo coal. It con- 
nects directly with the Perry county coals of Harrison and Clayton 
townships, and will be best described in connection with them. 
