728 GEOLOGY OF OHIO. 



to sixty feet. la the river hills Coal No. 5 has bsen apparently identi- 

 fied at EUiottsvllle, Croxon's Run, and at Sloan's Station. It is there 

 about three feet in thickness, and rests upon fire-clay and limestone. At 

 Croxon's Run the coal which has been regarded a3 the Roger is ninety 

 feet above the " Strip Vein " — Coal No. 4 — which makes it probable that 

 it is No. 6, and that Coal No. 5 is there cut away and replaced by the 

 very heavy bed of sandstone which overlies Coal No. 4. In the boring 

 near the mouth of Wills Creek a coal is said to have been passed through 

 forty -one feet below Coal No. 6, which is probably No. 5. In the "test 

 well" bored by Mr. Blynn, at Steubenville, a coal is reported two and a 

 half feet thick, fifty-four feet below No. 6, and in the Rolling-Mill shaft 

 a coal seam four feet thick has been reached forty-four feet below the 

 "shaft" seam. These are doubtless the same coal, and if the "shaft" coal 

 is, as we suppose, No. 6, this is the "Roger." Further south no traces of 

 it have been found. 



Coal No. 4. — At an interval of from fifty to seventy feet below Coal No. 

 5 a coal seam occurs which is quite persistent in the valley of Yellow 

 Creek, and in that of the Ohio between Linton and Sloan's Station. This 

 is what is known as the " Strip Vein " in these localities, and is so named 

 from the fact that it was like the " Strip Vein " of Salineville (Coal No. 7), 

 first mined by stripping and quarrying in .the bottom and along the sides 

 of the valley. It is generally about two and a half feet in thickness, a 

 hard and bright coal, containing little sulphur, although a large amount 

 of ash. It has been most extensively mined at Hammondsville, where 

 it has been coked successfully, and it has also been largely shipped for 

 the manufacture of gas. Along the Ohio it is sometimes called the " Block 

 Coal," from the fact that it comes out in cubical blocks with smooth faces- 

 The "strip" of Hammondsville is probably, though not certainly, iden- 

 tical with the Leetonia and Hartford coals of Columbiana county. 



Coal No. 3. — This is what is known as the "Creek Vein" in the lower 

 valley of Yellow Creek, so named from the fact that it is generally found 

 near, sometimes in, the creek bed. At Irondale the interval which sep- 

 aiates Coals Nos. 3 an,d 4 is eighteen feet, at Linton it is twenty feet, at 

 McCoy's Station thirty-six feet, at EUiotsville thirty-four feet, at Croxon's 

 Run fifteen feet, and on Island Creek twenty-two feet. This interval is 

 to a large degree filled with black shale, set with nodules of iron ore, 

 and a similar shale is sometimes found above No. 4. The Creek Vein is 

 usually from three to four feet in thickness, a soft, coking, sulphurous 

 coal, not highly esteemed for any purpose. It was formerly called the 

 "Salt Ccal" in the valley of Yellow Creek, from the fact that it supplied 



