756 GEOLOGY OF OHIO. 



" Fleming's " or " Finley's Coal." It is of good quality, and 3 j to 4 feet 

 in thickness. This has been generally and doubtless accurately identi- 

 fied with the Groff and Prentice Coals, and with the upper seam of Nebo 

 and Salineville (Coal No. 7.) In all these places it is, like the shaft 

 coal of Steubenville, the uppermost of the Lower Coal Group, i. e., it is 

 the next highest workable seam to the Pittsburgh Coal, but Fleming's 

 Coal is 50 or 60 feet nearer the Crinoidal limeatone than the shaft coal 

 is, and it will be noticed that there are two little coals not far above it, 

 the same that appear at Sloan's Station, and Wills Mine. Coming down 

 across the blank space to Wills Creek, we find at the base of the Barren 

 Measures, two small coals holding the same relation to a seam three feet 

 thick there found near the creek level, and sixty two feet aiove the Shaft 

 Coal. Going towards Steubenville, this 3 feet coal is found in the 

 Yocum Well but 2 feet thick, and in the " test well" it has disap- 

 peared. 



3d. The chemical composition of the Steubenville Shaft Coal is quite 

 unlike that of No. 7, as that appears on Indian Creek, and Wills Creek, 

 and Elliottsville — as will be seen from the tables of analyses given at 

 tlieend of the chapter. The Shaft Coal contains only about one-fourth 

 as much ash and sulphur as are found in No. 7. Hence, as mentioned 

 above with our present knowledge of the subject it seems safer to con- 

 sider the upper workable coal of Wills Creek as No. 7, and the Shaft 

 Coal 60 or 70 feet below as Coal No. 6. 



STEUBENVILLE. 



At Steubenville, numerous shafts have been sunk to Coal No. 6, and 

 it is extensively worked, both for home consumption and for exportation. 

 Several furnaces and rolling mills have been erected here, and these, 

 with the other manufactories, attracted by the abundance and excellence 

 of the coal, have made Steubenville the industrial center of the county, 

 as well as the center of population. 



As has been stated the main coal passes beneath the river, just above 

 the mouth of Wills Creek, and it is reached in the series of shafts that 

 have been sunk to it along the river bank at a depth which rapidly in- 

 creases southward in consequence of the southerly dip of the strata- 

 At Cable & Co's. Shaft, above the mouth of Wills Creek,, coal is reached 

 at 76 feet from the surface. This is now abandoned, the quality of the 

 coal being inferior. Between Wills Creek and the railroad bridge, is 

 the shaft of the Jefferson Coal Co., called the Bastard Shaft, which is 80 

 feet deep. The coal is here 4 feet in tl^tickness, but is said to be friable 

 and sulphurous, and inferior in quality to the coal mined at Steubenville. 



