236 GEOLOGY OF OHIO. 
The seam has a good name in Canton. It is a smith coal, and has 
been used for tempering saws in the factory, displacing the Pittsburgh 
seam for this purpose. It is also highly approved as a domestic fuel. 
It will be brought into competition with Massillon coal, but not on 
quite equal terms, as the difference in royalty alone allows it to be sold — 
at a lower rate by at least 20 to 40 cents per ton. Asa steam coal 
it gives good satisfaction. It burns freely, and makes but little 
clinker. 
The seam ranges in thickness from 3 to 4 feet, but it rests mainly 
at the smaller figure so far as now shown. The structure of the seam 
is as follows: 
FALGURE KOK 
STRUCTURE OF MIDDLE KITTANNING 
COAL(N$6) AT CHESTNUT GROVE MINE 
AT NORTH INDUSTRY . 
SWales itn colcaveous nodules === 
Wipper ibenchy crc ccs secs ccsocsecorececescorsss seececseeeeeeesovseeees 19 in. to 25 ft. 
Partin 2U.0s. ccscsconcenscossodeeusesereotcceter tens asvonereenontees 2 in. 
Lower bench ase ee ee aa A Rete 15 to 18 in. 
The coal from the lower bench is the purer. It is mainly made 
into small coal in mining, and on this account the nut coal of the mine 
will be more valuable than usual. The coal is bright and clean, and 
shows fair strength in handling. Over a screen, 13 inches between the 
bars, there has been thus far made four cars of lump to one of nut coal, 
and a little less than one car of slack to the same lump coal. The slack 
is sold at a price that pays at least for handling. The coal mines easily, 
and little or no powder is required outside of entries. There are occa- 
