194 



GEOLOGICAL SURVEY OF THE TERRITOEIES. 



the 28tli of September. About a mile from the town there is one of the 

 largest coal-beds in the West. It is from 22 feet to 32 feet in thickness. 

 It crops out on the western side of a hill, composed mainly of sand- 

 stones. It dips 10^ north of east. There are four slopes being* worked 

 at present, one by the Wyoming Coal and Mining Company, and three 

 by the Eocky Mountain Coal and Iron Company. At the mine of the 



Fig. .64. 



N9» 



\»^ 



«»♦ 



COAL^ 



BONE CSAL 



SLATr. 



IROH OKE 



Wyoming Company the main bed of eoal is 22 feet thick, as shown in 

 Xo. 1 of "the accompanying sections in Fig. 64,, It is composed as fol- 

 lows, from above downward : 



Fire-clay roof. 



Feet. Id. 



Coal 7 



Slate 5 



Good coal 8 3 



Boue coal 3 



Coal 1 2 



Slate ^ 5 



