MINES OF BULL HILL. 
383 
There were several ore shoots along this vein, and some of them have been sloped 
to a depth of 500 to 600 feet. It is stated that little of value has yet been found 
below this depth. The best ore was obtained from Lucky Guss No. 2, which was 
opened to level 7 and was crosscut in two places by level 13, Orplia May shaft. The 
ore is stated to have continued down to level 6. 
SHURTLOFF VEIN. 
Shurtloff No. 1, a nearly vertical vein trending N. 36° W., has been opened for 
800 feet by crosscuts from the American Eagle shaft on levels 5, 8, 11, and 15. Rich 
ore has been found on the latter three levels 900 feet east by south of the shaft. 
Tetrahedrite is reported to occur on the lowest level, which is 1,300 feet below the 
place where the vein should outcrop. The Findley veins lie a short distance to the 
east and have proved productive to at least 100 feet below level 15 of the American 
Eagle shaft. 
Two veins which evidently lie in the same general zone as the Shurtloff vein 
have been intersected in the long Orpha May crosscut on level 13, 1,100 and 1,200 
feet east of the shaft. 
The Zenobia vein is described in connection with the Pharmacist and Burns 
mines (p. 401). 
LOS ANGELES VEIN. 
% 
The old Los Angeles mine is situated between the Blue Bird and the Last 
Dollar; the Portland holdings adjoin it on the south. It has been idle for many 
years, "but in 1905 several thousand tons of low-grade oxidized ore was extracted 
and treated by direct cyanide process. 
MINES NEAR CAMERON. 
The lower northern slopes of Bull Hill and Bull Cliff near Grassy Creek and the 
little town of Cameron are characterized b} T the prevalence of much comparatively 
fresh breccia of reddish-brown color and well-preserved fragments. The Isabella 
dike of trachydolerite extends down to Grassy Creek and has here been proved some¬ 
what productive, though elsewhere it is entirely barren. 
No great mines are situated in this vicinity, but the Pinnacle has a very credit¬ 
able production, and blocks 8 and 10 have likewise proved profitable. The Morn¬ 
ing Star, which is situated somewhat higher up on the slope, nearer to the Isabella, 
was worked in 1903 on a small scale by lessees, but closed later on. On the north 
side of Grassy Creek in this vicinity there are no developments of importance. 
PINNACLE MINE. 
The Pinnacle mine is situated on the northern slope of Bull Hill, above Cameron, 
at an elevation of 10,250 feet. Between 1897 and 1900 it produced about $250,000. 
The mine is developed by an incline shaft 100 feet deep, a vertical shaft 500 feet 
deep, and about 1,800 feet of drifts and crosscuts. It was closed in 1904. 
The principal workings occur in breccia, but the contact with the latite-phonolite 
is reached in several places. The main vein of the mine is a sheeted fissure in 
breccia, striking northeast and dipping northwest. Another vein said to carry 
