STATE GEOLOGIST. 1G1 



TV v. odville mine was fi si opened in 1857, It proved, on 

 ited within a small basin aboul 510 feet in 

 the rise of the coal to the outer edge being ah at 

 . feet. Within tins basin the coal is intersect* d by nu- 

 merous faults, which cause a deterioration of its quality for 

 il feet on each .side. On extending the working of tho 

 mine, how, yond the rim of the basin, the scam of coal is 



found to bave greater regularity, compactness and purity. In 

 tonsequence o\' the peculiar l< cality*of the mine, the com| ai y 

 been obliged to deliver a grade of coal Bomewhat impure, 

 but the present workings are bringing out an article of improved 

 quality. 



The this mine is used with success both for domestic 



(team pur| It ignites freely in an open prate, emits 



a cheerful flame, and produces as much heat ther bitu- 



minous coal. It is used for heating- the Insane Asylum at K al- 

 O. It is also declared to be a superior article for gener- 

 ating steam. eenings and refuse are used for engine 

 ■ mine, and are taken by blacksmiths for their use to 

 the distance I f twenty miles north and BOUth of the railroad. 



This coal makes a g©< d coke for k>C< motives, malt h< uses, &c, 

 but f<>r want of facilities for making it in huge quantities, the 

 ■Ot yet boon tested in furnaces for the manufac- 

 ture of iron. IS be no d- ubt that lor gas purposes this 

 coal would be found similar to tie Stevens' Ridge coal. 



I am under obligations to John Holcroft, Esq., for particular 

 informati ting this locality. 



Mr. Alexander McArthur has taken large quantities of sur- 



From an outcrop near Corunna. This coal lias long 



in request for blacksmithing purposes. Recently Messrs. 



1 Stanton have sunk a shaft at a point win re lh< I 



.1 feet from the Burfac below the thinned pro- 



ition of (he Woodvill< Accounts state that 



they tons to the Detroit maiket. 



The gaa I 'lie Corunna coal were also 



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