194 



GEOLOGICAL SURVEY OF THE TERRITORIES. 



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 fovir slopes being worked 

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

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



Fig. .64. 



m'^ 



<;oni.- 



■»ONE COflU 



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

 jSTo. 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 I 5 



