38 THE BOOK CLIFFS COAL FTELD. 
Section of coal -bearing rods north of Thompsons— -Continued. 
Ft. in. 
Shale, carbonaceous 2 
Coal 1 6 
Shale, carbonaceous 5 
Coal 2 6 
Shale, carbonaceous 5 
Coal 5 
Shale, carbonaceous 3 
Coal 4 
Shale, carbonaceous 2 
Sandstone, buff, shaly 10 
Sandstone, thick bedded, buff 15 
Coal 5 6 
Shale, carbonaceous 15 
Sandstone, thin bedded. 5 
Shale, carbonaceous 4 
Coal 2 
Shale, carbonaceous 18 
Coal 2 6 
Shale, carbonaceous 5 
Sandstone, thin bedded, buff 15 
Coal 6 
Shale, carbonaceous 3 
Coal 1 6 
Shale, carbonaceous 9 
Coal 3 6 
Shale, carbonaceous 10 
Sandstone, thin bedded, buff 40 
Sandstone, thick bedded, interbedded with shale 20 
Sandstone, thin bedded, buff 25 
Sandstone, thick bedded, buff 30 
Sandstone, thin bedded, buff 50 
Sandstone, massive, buff 70 
Shale, drab, interbedded with subordinate, thin, buff sandstone 
layers 95 
Sandstone, massive, fine textured, with local lenses of coal up to 
1 foot 3 inches thick 150 
Shale, Mancos. . 
070 8 
The principal work here has been done at the Ballard mine (No. 29) 3 
at which the following section was measured (see PI. IX) : 
Section of coal bed at Ballard mine, near Thompsons, Utah. 
Sandstone, shaly. • Ft. in. 
Coal 1 3 
Bone 2 
< !oal 1 10£ 
Bone H 
Coal 2 3 
Shale, carbonaceous. 
5 8 
At the end of the workings there is 5 feet 1(H inches of coal with 
no partings. 
