174 | -.,, GEOLOGY OF OHIO. 
In Liberty township | the coal now known would be exhausted in. 
3 or 4 years at the pr esent rates of mining. Small areas are added to 
the available resources of the township occasionally, and in this way . 
the life of the field will be prolonged. The mines at present in opera- 
tion in this township are as follows: 
Kline Coal Co.’s Slope ...... .....00.ssseeeeeee be veasiccuas Tod Iron Co. 
GoaltSlopeNGsON eeaccccccetsissecoscoeseceeccacese vce’ Mahoning Ooal Co. 
(OdaoT ela Le ODN telkoy a8) da necad5650066d0030000000000000 000600000 Church Hill Coal Co. 
ChurchebiltShattrecec arses cdccconeccceodeteccosset Church Hill Coal Co. 
Jebel WMoyars Clore Slovev I} .5500000060000000060008000000060000000 Morris, Sampson & Co. 
Gartiel da@oaliS Watts crocs. c.scccucccccusccessccsenecsncees McCurdy, Margerum & Co. 
The last named mine is one of the lately opened mines, and ex- 
hibits in striking form the irregularities that belong to the seam in 
general, and to these narrower swamps in particular. 
The coal of Weathersfield township is confined to its southern 
border, where it constitutes the Mineral Ridge mining field. The Min- 
eral Ridge coal belongs to the general horizon of the Sharon or Block 
coal, as heretofore determined, but there is in the facts of its occurrence 
some ground for the earlier opinion of Newberry, by which it was 
referred to a higher horizon than the Block coal. The coal itself is of 
a different grade from the Block coal, being much softer and more 
impure, and ofa slightly cementing character. It is often underlain by 
an excellent Blackband ore, which reaches a maximum thickness of 12 
inches. The average is scarcely more than half this. A black slate 
comes below the ore, and the open-burning Block coal lies still below. 
The latter is generally thin, but sometimes rises to 2 or 3 feet. Of 
these several elements, the Blackband ore is the most valuable, and 
were it not for its presence, a number of the mines would be closed at 
once, and would probably not be opened again. ‘The section will be 
better understood by the following diagram: } 
I, iG baer RT Lea oles) CORAL, COVA? 59000000000006000 060000000600000 00000000000. 0’ to 4 
24, -Blackbamd: 1rOms Ones ssicssaucedses ose sicssceoasee nae eee eae ee Y to 1’ 
8; (Coking: Coalw.cisecncvcscaseamnaseste sence cosh ate sean aaecm te eee ees 2/7 to 37 
4 blackislateycalledie Widelawakeweenncccsccteeeseeeeeeeeee 0’ to 27 
Dh Jadkora's Corll, Wy sreHNe HWTA MTA? 6550000000080000d0600000 000000000000000000 800000 6” to 23” 
Some of the larger mines have worked the Block coal in their 
northerly entries, and the coking coal in the south entries, both seams 
coming out by the same shaft. The mines of the township are as 
follows : 
