488 GEOLOGY AND GOLD DEPOSITS OF THE CRIPPLE CREEK DISTRICT. 
in Eclipse Gulch, the ore and waste being all hauled by an electric locomotive 
through the Columbine tunnel, about three-fourths of a mile in length, which passes 
under Squaw Mountain and connects the mine and mill. Both ore and waste are 
hoisted to the surface and distributed to chutes which convey it to the bins on the 
tunnel level. The company began operations on the Gold Coin claim in 1895 and 
encountered ore the following year. The mine has since been producing steadily. 
UNDERGROUND DEVELOPMENT. 
The mine is worked through the Gold Coin vertical shaft, situated nearly in the 
center of the Gold Coin claim, and a little over 1,200 feet in depth. There are twelve 
main levels at rather irregular distances apart. Of these level 1 is now used merely 
as a connection with the Columbine tunnel, 
while level 2 was never of much importance, 
the stopes having been carried up continu¬ 
ously from level 3 to level 1. The important 
workings all lie north of an east-west line 
drawn 200 feet south of the shaft, and are of 
general linear plan, following the nearly north- 
south Coin vein. In addition to the main 
drifts on the Coin lode, there are some im¬ 
portant series of divergent and parallel drifts, 
as will appear in the descriptions of the lode 
systems. Level 12 was under water at the 
time of visit. Several of the levels connect 
directly with the workings of the Dead Pine 
mine on the north. The shaft is in the foot 
wall of most of the lodes, which are reached 
on all levels by a main easterly crosscut. 
About 1,100 feet a little east of south from 
the Gold Coin shaft is the old Providence 
shaft, which connects with a long south drift 
on the Gold Coin level 6. 
LODE SYSTEMS. 
The principal lode (fig. 64) is the Coin, 
striking about N. 8° W., and dipping to the 
east. Near the shaft the average dip is about 
83°, while near the north end of the mine 
this is reduced to 70°. 
East of the Coin lode is the Montana lode, following the Montana phonolite dike. 
On level 5, at the latitude of the shaft, the Montana lode is about 240 feet east of the 
Coin lode. It has an easterly dip of about 74° and thus lies farther and farther east 
of the Coin on successive lower levels. The general strike of the Montana lode is 
Fig. 64.—Plan of level 7, Gold Coin mine, showing 
vein system. 
