OCCURRENCE OF COAL. 27 
In the vicinity of the old Book Cliff mine the lower coal is of variable 
thickness; in places it measures almost 5 feet, while near by it thins 
out to almost nothing, as shown by the following sections: 
Section of coal bed at the old Book Cliff mine. 
Sandstone. * Ft. in. 
Shale 7 
Coal 4 6 
Shale 8 
Sandstone. 
5 9 
Section of coal bed 1 mile southeast of old Booh Cliff mine 
Shale. Ft. in. 
( oal 4 6 
Shale 8 
Coal 3 i 
Shale 8 
Sandstone. 
Total coal bed 8 6 
Section of coal bed 1 mile southeast of tin above section. 
Shale. Ft. in. 
Coal 1 
Shale 6 
( 'oal 2 10 
Shale. 2 G 
Coal 1 8 
Shale 8 
Sandstone. 
9 2 
It is reported that in working the lower coal in the old Book Cliff 
mine several areas were encountered in which the coal is absent. 
Northwest of the old mine evidences of thinning are shown by the fol- 
lowing section: 
Section of lower coal bed near Booh Cliff mine. 
Ft. in. 
Shale, carbonaceous, interlaminated with thin coaly layers up 
to one-half inch ti 
Coal 2 
Shale, carbonaceous and bony I 
Bone 2 
Coal and bone 9 
Shale, carbonaceous 7 
Coal ! 5 
Shale, carbonaceous 7 
Sandstone. 
L3 8 
