COAL. . 55 
Doubtless the coal beds reported in this well are those mined 
2 h miles to the northwest. The coal borings were analyzed by 
M. Delafontaine in 1890, with the following results: 
Analysis of coal borings from well <it Empire ranch. 
Specific gravity, 1.51. 
. Water (at 212° F.) 4. 84 
Volatile matter; bright, long flame 37. 10 
Fixed carbon 50. 54 
Ash, light fawn color 7. 52 
100. 00 
The coal is noncoking. The large amount of ash appears to be due to some slate 
fragments intermixed. 
In the NE. i sec. 18, T. 19 N., R. 77 W., is the abandoned Terry Fee 
mine, the " Dutton or Cooper Creek mine' 1 of the early reports. The 
coal worked here is said to have ranged from 6 to 7 feet in thickness 
and was a good bright coal, burning with much white ash but no 
cinders. The roof consists of white sandstone, with a few inches of 
slate just over the coal. The dip as measured from present exposures 
is 8° E. The workings extend into the hill for 400 to 500 feet, but the 
mine has long been abandoned. It is claimed that beneath this coal 
bed and separated from it by 8 feet of shale there is another bed 7 feet 
thick. This is in accordance with the succession given in the log of 
the Empire ranch well, located 2\ miles farther southeast. 
Several outcrops of coal are reported 2 miles northeast of the Terry 
Fee mine, in sec. 4, T. 19 N., R. 77 W., in the valley of Coalbank Creek. 
The Monarch mine, which is worked from time to time, is situated in 
the SW. J sec. 8, T. 19 N., R. 77 W. The bed was found to be 5 feet 
thick and dips south of east at an angle of about 4°. The coal 
appears to be of good quality. The roof is of shale and stands well. 
The entry was driven about 200 feet into the hill and several rooms 
were turned off from it. The chief market for the product of this mine 
and that of the Terry Fee mine was on local ranches and in the town 
of Laramie. A production of 500 tons, selling at $2 a ton, was reported 
in 1904. a 
Coal outcrops near the center of sec. 20, T. 19 N., R. 77 W. The 
deposit is 2 to 3 feet thick and consists of several 8 to 10 inch beds of 
coal separated by bone. The dip is 15° SE. This bed appears to be at 
a somewhat higher horizon than the coal of Pine Ridge and possibly 
may be correlated with the unsuccessful prospect a mile northwest of 
Harper station. 
An anticline trends due south from the mines above mentioned, 
forming sharp north-south ridges in the vicinity of Cooper Creek Cove. 
In the southeast corner of sec. 17, T. 18 N., R. 77 W., on the east side 
"Trumbull, I, \\\, eoal resources ol Wyoming: Hull. Univ. Wyomiug No. 7, L906. 
