GEOLOGICAL SURVEY OF THE TEEEITOEIES. 195 



Feet In. 



Best coal... 2 9 



Slate : 3 



Coal 4 



Bone coal - 2 



Good coal 8 



Slate or bed-rock. 



This is the most southern of them all ; and as we go farther north 

 the bed becomes thicker. Mr. Wardell is superintendent of the Wyo- 

 ming Company, which works, in addition to this mine at Bvanston. 

 mines at Carbon, Eock Springs, and Almy. Fig. 2 is a section at 

 mine ISo. 1, of the Eocky Mountain Coal and Iron Company. It con- 

 sists as follows, from above downward : 



Feet. 



Coal 5 



Clav and shale 12 



Coal 7 



Clay 3 



Main bed of coal, witli four bands of slate 26 



Shale and clay 8 



Coal 5 



Clay and shale 15 



Iron ore 3 



Clay and shale 15 



Nos. 2 and 3 are sections at mines ISTos. 2 and 3, of the same com- 

 pany. They are the same, with the exception of the main body of coal, 

 which in No. 2 is 30 feet thick, and at No. 3, 32 feet thick. In No. 3 

 the clay above the main body of coal is 2 feet thick instead of 3, and 

 that below, 5 instead of 8. Mine No. 1 was commenced in June, 1869, 

 and the main shaft has been carried in a distance of 386 feet. It is 13 

 feet wide, and slopes a little more than 1 foot in 4. At a distance of 

 150 feet from the entrance is the first level, at right angles to the main 

 shaft. It is 15 feet in width. On the north side it has reached a dis- 

 tance of 330 feet from the main shaft, and on the south side 450 feet. 

 One hundred and fifty feet below this is the second level, which on the 

 north side has penetrated 330 feet, and on the south 400 feet. From 

 each level chambers are worked through to the level above, parallel to 

 the main shaft. They are 30 feet apart, and the entrance is 12 feet in. 

 width, which is rapidly widened to 18 feet. Mine No. 2 was opened in 

 August, 1869, and has now reached a depth of 520 feet. It slopes about 

 1 foot in 4, and is worked on the same plan as No. 1, with this excej)- 

 tion, that the third level, instead of commencing at the main shaft, does 

 so at the end of shafts which branch from the main one at an angle of 

 45'^. These shafts are, one on each side, 18 feet in width. The first 

 level on both sides of the main shaft runs to the outcrop, a distance of 

 412 feet in each case. The second level, a distance of 150 feet from the 

 first, runs to the outcrop 413 feet on the south side, and on the north 

 has been carried 700 feet, and will go 1,000 feet when it reaches the 

 line between it and mine No. 3. The third level penetrates 85 feet on 

 each side. Mine No. 3 was opened in April, 1871, and has reached a 

 depth of 190 feet. The first level only has been commenced, being 50 

 feet each side. It will be worked on the same plan as Nos. 1 and 2. 

 Bach mine has two engines for hoisting the coal. There are two hun- 

 dred and fifty men employed, a large number being Chinamen, who live 

 in houses erected by the company, near the mine. There is also quite 

 a large store at the mine. The company supplies the Central Pacific 

 Eailroad, and its branches in California, and the Pacific steamship lines 

 with coal. About 350 tons per day are mined, and the company expect to 



