734 GEOLOGY OF OHIO. 



HAMMONDSVILLK. 



The section here is essentially the same as at Irondale, but the hills 

 are not so high and do not catch the Crinoidal limestone. The " Strip 

 Vein," Coal No. 4, is the seam principally worked here. It is about twp 

 and one-half feet thick, very clear and bright, with only one fault — that 

 . it contains an unusual percentage of ash. It is comparatively free 

 from sulphur ; comes out in cubical blocks, and resembles the Pittsburgh 

 coal in appearance. It yields an excellent coke, which is extensively 

 manufactured here. The coal has also been largely used for gas. 



The mines and coke ovens at Hammondsville are owned by H. W. 

 Wallace, Esq., and the Hammondsville Coal and Coke Company. 



For analysis of Hammondsville coal see tables at end. 



COLLINWOOD. 



The geological section of the hills at CoUinwood is as follows : 



FT. ra. 



1. Shale and sandatone 30 



2. Coal No. 7 3 to 4 



3. Flre-olay limestone, shale, and sandstone 35 



4. Coal No. 6 3 



5. Fire-clay and limestone 8 



6. Shale and sandstone -. 50 



7. CoalNo.5 2 6 



8. Fire-clay 4 



9. Yellow argillaceous limestone 3 to 7 



10. Sandy and clay shales 50 



11. Coal No. 4 2 



12. Fire-clay 3 



13. Sandstone 15 



14. Coal No. 3 3 to 4 



15. Fire-clay 5 to 6 



Here, as elsewhere in the valley of Yellow Creek, numerous bands of 

 kidney ore traverse the shales. Mr. E. K. Collins has had a seriesof the 

 ores on his property analyzed by Prof. J. L. Cassells, with the results 

 given below. None of these ore's have as yet been mined, and it is im- 

 possible to say whether any of them can be profitably worked. Those 

 numbered 1 and 2 are from below Coal No. 4 ; those numbered 3 and 4 

 are from between the "creek" and "strip" veins; the others above the 

 "strip." 



