OCCURRENCE OF COAL. 39 
At a prospect on the west side of the gulch, opposite the Ballard 
mine, on a coal bed below the one there worked, the following section 
was obtained: 
Section of coal bed near Ballard mine. 
Sandstone, shaly. it. in. 
Coal LO 
Bone 4 
Sandstone - 
( oal 4 6 
5 10 
The thickness of the bone and shale partings is variable oven in 
near-by sections. 
A bed of coal a few inches to a foot and a half thick occurs in the 
first massive sandstone above the top of the Mancos shale, and shows 
up prominently from the valley as a black layer, but it is not thick 
enough to be of much importance. 
Between Thompsons and Green River there is only one mine, the 
Black Baby, and almost no prospecting has been done. The few 
sections that were made did not reveal the presence of any beds more 
than 2 feet thick, but in the absence of prospecting little can be said 
of the coal in this part of the field. 
At the Black Baby mine (No. 32), about 10 miles northeast of the 
town of Greenriver, the following section was measured: 
Section of coal bed at Black Baby mine. 
Shale, carbonaceous. Ft. in. 
Coal 3 
Bone and shale 3 
Coal 2 3 
Bone 8 
Coal 2 
Bone and shale I 3 
Coal 1 
7 8 
The lowest coal passes beneath the level of Green River about 4 
miles above the month of Price River, but no prospects were found 
in that vicinity. 
West of Green River and south of Price River the coal occurs in 
an isolated area near the summit of the Beckwith Plateau, and north 
of Price River coal outcrops in the 4 face of the cliffs high above the 
valley. 
The following section was measured half a mile below the entrance 
to Price River canyon, at (he northwest end of Beckwith Plateau. 
There are four beds of coal more than 2 feel thick, and three otl 
