832 GEOLOGY OF OHIO. 



Passing over the hill to Sand Run, I found, about half a mile south of 

 the road from Carbon Hill to Straitsville, an exposure of the Nelsonville 

 seam, which gave the following measurements : 



FT. IK. 



Yellow shales. 



Coal 1 4 



HigWy bituminous shale 10 



Clayshale 6 



Coal 3 7 



Sliale 3 



Coal 2 1 



Shale H 



Coal 2 1 



On the lands of the Crafts Iron Company, near the junction of Little 

 Monday Creek with Monday Creek, the Nelsonville seam lies in the high 

 hills west or north-west of the furnace. I made no measurements of the 

 coal, but the seam is reported to be nine and one-half feet thick. The 

 coal, as mined, appeared remarkably well. It mines in large blocks, is 

 free from slate, and contains very little visible bi-sulphide of iron. 

 Unless there is sulphur in other combination — which analyses only will 

 detect — I should confidently predict that this will prove a very success- 

 ful furnace coal. The coal will be brought down to the furnace by a 

 tram-road, and the same road will bring down the ore. 



The valley of Lost Run reveals the coal in fine thickness, as we should 

 expect, this branch of Monday Creek being the next one south of Sugar 

 Run, where are the New Straitsville mines. At one exposure — at what 

 was called J. D. Clarke's opening — the coal was found to measure ten 

 feet four inches, exclusive of the usual shale partings. On the land of 

 the late William Ward, Esq., the lower eight feet of good coal were seen, 

 the top not being uncovered. On the land of Thomas Barnes, the seam 

 measured nine feet ten inches. In 1869, 1 obtained samples of the Lost 

 Run coal — three from the Ward opening, and three from the Clarke bank 

 — ^which were analyzed by Professor Wormley: ^o, 1 from middle of 

 lower bench; No. 2 fiom middle of the middle bench. Nos. 3, 4, 5, and 

 6 represented the upper bench in ascending order. Of these, JS^os. 1,2, 

 and 4 came from the Ward land, and the others from Clarke's bank. 



