MINES OF GOLD HILL 
299 
The Conundrum mine is worked through an adit, at the end of which is an under¬ 
ground station and an inclined winze on the lode. Hoisting is done by electric power. 
Although the top of the station, excavated in gneiss, is only about 50 feet below the 
surface of the hill, no timbering is necessary and the station is practically dry. The 
adit enters Gold Hill 450 feet west of the Midget shaft and about 130 feet below the 
collar of the latter and runs for 300 feet N. 20° E. until it reaches the lode. The 
winze goes down on the dip of the lode, about 70° E., to a vertical depth of 620 feet 
Fig. 28.—Geological plan of portion of level 3 of the Conundrum, level 7 of the Midget, and level 6 of the Moon-Anchor mine, 
showing relations of principal lodes. 
below the adit. There are six main levels, the successive vertical intervals from the 
adit down being 110, 155, 135, 60, 95, and 65 feet. The workings of the Conundrum 
are simple and consist chiefly of drifts along the nearly north-south lode. There 
is, however, an important stope in the northern part of the mine on a zone of cross- 
fissuring. 
A general understanding of the relation of the workings of these three mines 
may be had from figs. 28 and 29. 
