THE LOWER COAL MEASURES. MWS 
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STRUCTURE OF WYANDT’S COAL. 
NEAR TUNNEL 
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Followed a little further westward, it comes into the same section 
again with the Middle Kittanning coal, which is there known as the 
Dennison or Pike Run coal. Its place is more than one hundred feet 
above this last-named seam. 
The seam is also found in fair development to the west of Sherrods- 
ville, on Thompson’s Run. It has long been worked here in farmers’ 
banks. 
The several diagrams given, illustrative of the structure of the 
seam, are seen to agree in general character, and they help to establish 
the fact that all the mines named belong to a common horizon. 
Returning to the Dell Roy field, a few statements are required as 
to the Lower Freeport coal. This is often a workable seam throughout 
this territory. Like the Upper Freeport coal it is unsteady, but it is 
found in a large number of the sections in which the former occurs. 
It does not rise beyond 3 feet in thickness, as a rule, and its quality is 
not equal to the upper coal. 
It has been opened in a small way on the C. Smith farm, a mile 
south of Dell Roy. The coal is here 4 feet in thickness. It has also 
been opened by Dr. Sherrod, just above Sherrodsville, where it lies 51 
feet below the Upper Freeport seam, and 12 feet above the level of 
Connotton Creek. Two feet of black shale immediately cover the seam. 
The coal is about 3 feet thick, and is underlain with a clay, carrying 
yellow nodules of worthless ore. The interval between the Freeport 
coal is sometimes reduced to 27 feet. | 
The southward dip of the series carries this seam below drainage 
soon after leaving this point, in ascending the Connotton Valley, but 
