HOCKING VALLEY COAL FIELD. 951 
great thickness of the top coal, but this mine has gained as good a name 
as any in the thick coal. 
There was shipped from Shawnee, in 1883, 420,000 tons of coal, of 
all descriptions. ‘The four furnaces of the town, when in blast, require 
about 60,000 tons per year additional to the amount sent out to the 
general market. 
In the interval between Shawnee and Straitsville the valley of 
Rock Run is cut down a little below the level of the coal, and a new 
mine was opened here in 1883. The mine commands somewhat more 
than 200 acres of coal land, situated in the south-west quarter of Sec- 
tion 21, Salt Lick township, and in the adjoining Section 28 of Coal 
township, the mine being opened on the latter. It is commonly known 
as the Rock Run mine, though its full designation is Mine No. 3, of the 
Columbus and Hocking Coal and Iron Company. It is reached by a 
branch road, built by the Baltimore and Ohio Company, from the 
Newark branch below Shawnee. ‘The coal is worked by the company 
above named, under lease from H. Hazleton, ona royalty. 
This new mine shows as fine a body of the Great Vein as there is 
in the Hocking Valley. The coal is steady in thickness, and apparently 
also in quality. Its structure is indicated below: 
FiGURE Sa 
STRUCTURE OF COAL, ROCK RUN. 
c.&2H. GC &al.c?2’sS MINE” N23. 
Roos Shales..__-_. —— 
Roof Wise ee ely le in, 
| Gonmel wejecked. ve, 
Weae) cai) Ua ie 
‘Vaxtind shin wceculas 
Goal, hid hewcla yh wy 
Secoud slate —____/ 
' = Jae a oa a oH ai 
Goals, lowe bewch aa) & a 
