SUPPLEMENTAL REPORT — HOCKING VALLEY. 839 



Snow Pork, I obtained three measurements of the Nelsonville seam, as 

 follows : 



Number One. 



Sand-rock. 



Irregulax shale 6 



Coal Sfeetto 3 6 



Clay 3 



Coal I 5 



Parting , 1 



Coal 2 



Number Two. 



FT. IN. 



Clay shale. 



Coal 1 



Bitmninons shale 1 



Coal 3 6 



Clay 3 



CoaJ 1 4 



Parting 1 



Coal 2 ... 



Number Three. 



FT. IN. 



Saud-rock. 



Clayshale 3? 



Coal 2 



Slaty coal, or highly bituminous shale 1 5 



Coal 2 



Clay 3 



Coal 1 6 



Parting 1 



Coal ; 2 



In Nos. 2 and 3 there is a fourth bench of coal. This is to be seen 

 everywhere in the lower part of the Snow Fork valley, where the seam 

 is in its complete or normal state. In some places not only is this top 

 coal gone, but the bituminous shale below it, both being replaced by sand- 

 rock. 



No mines have been opened on Snow Fork so far as I know, except thos 

 recently opened at the Ogden and Akron furnaces. At the former the 

 top coal and shale are replaced by sand-rock, and the coal is probably less 

 good than will be obtained under better cover. The Ogden Furnace is 

 an exceedingly perfect one in all its equipments, and is worthy to be fed 

 with the very best fuel the Snow Fork valley affords. 



At the Akron Furnace mines the Nelsonville seam is overlain by yel- 

 low shales. The upper or fourth bench, with the bituminous shale under 



