HOCKING VALLEY COAL FIELD. 931 
of course, in a decrease of quantity, but there is a more direct re- 
duction of quantity from which halt of the mines already opened have 
been found to suffer. The coal has proved unsteady, especially in the 
immediate vicinity of Corning. Clay veins come in, the coal grows 
hard and curly, the roof shales give place to sandstone, and the seam 
runs rapidly down to 4 ft., 3 ft., 2 ft., nothing. Mines, the expensive 
plant of which would have been good for a quarter of a century of use, 
have been already abandoned, and others that are still worked have 
_ but a short lease of life. 
Three townships make up most of the Sunday Creek field, viz., 
Monroe, Trimble and Dover. Parts of Pleasant, Salt Lick and Coal 
_ are also included in it. The principal mining now going forward in 
this valley is in Monroe township. 
Coal Mines of Monrce Township. 
The mines of the Ohio Central Coal Company’s lands in the Great 
Vein are designated by the odd numbers, 1, 3, etc., while for the 
mines in the Upper Freeport seam, the even numbers are used. Of the 
latter there are but two now in operation, viz., the twin mines of No. 
12. Of the former, Nos. 3, 5, 7, 9, 11, 18, 15 and 19 have been opened 
and worked. Of these, Nos. 3, 11, 13, 15 and 19 are operated by the 
Ohio Central Coal Company; No. 7, by the Sunday Creek Coal Com- 
pany, under lease from the Ohio Central Company, and Nos. 5 and 9, 
by W. P. Rend, also under lease from the Ohio Central Company. 
All of these mines, except the last, are in reality opened in one 
body of coal. The entries of mines Nos. 3, 5 and 13 are already 
worked into each other. Nos. 9, 11 and 15 are situated on the east side 
of Sunday Creek, but their entries have been in some cases driven 
westward under the creek to the same body of coal referred to above. 
Nos. 3 and 5 are located in Section 9; Nos. 7 and 9, in Section 10; 
No. 11, in Section 15; No. 13, in Section 16, and No. 15, in Section 26. 
One description will apply to all where the coal is undisturbed. 
| Mine No. 13 will be treated more fully than the rest, as it exhibits 
best all the peculiarities of the field. It is entered by a shaft, 66 feet 
deep. That part of the coal extending to the north and west is regular 
and natural in all respects. The section of the seam is shown in the . 
accompanying figure: 
