478 GEOLOGY AND GOLD DEPOSITS OF THE CRIPPLE CREEK DISTRICT. 
AJAX MINE. 
INTRODUCTION. 
The Ajax mine is on the south slope of Battle Mountain, just north of and over¬ 
looking the town of Victor. It is owned by the Ajax Gold Mining Company, of 
Denver, capitalized at $1,500,000, and embraces the Apex, Monarch, Mammoth, 
Pearl, Champion, June Blizzard, Victor Consolidated, Victor Consolidated No. 2, 
Hallett & Hamburg, Necessity, Orpha Nell, Jolly Tar, Lucky Dick, and Gee Mima 
claims. Operations were begun in 1895 and have been continued steadily to date. 
Like the Portland, it is situated on the contact between the granite and the vol¬ 
canic breccia and has extensive workings in both rocks (PI. V, p. 26). On the 
northeast the Ajax ground adjoins the Portland and on the east and southeast 
the Dead Pine property. The mine is well equipped and employs about 140 men. 
Statistics of production and dividends are not obtainable. 
UNDERGROUND DEVELOPMENT. 
The main Ajax shaft, 1,228 feet in depth, is situated near the southern edge 
of the property. The collar is in breccia, but the shaft enters the granite between 
levels 1 and 2 and continues in that rock to the bottom. Connected with this 
shaft are eleven main levels, whi.li, with the exception of levels 4 and 5, are about 100 
feet apart. Level 1 is about 125 feet below the collar of the shaft, and level 5 is 
about 75 feet below level 4. In April, 1904, the drifts and crosscuts cn all levels 
had a total length of 36,143 feet, and the stopes a total volume of 2,020,669 cubic 
feet. The more important workings fall into two main groups—a very irregular 
maze of drifts and stopes in the granite, mostly southwest of the shaft, and a series 
of linear drifts and stopes along two principal fissure zones in the breccia north of 
the shaft. The latter workings pass under the western part of Battle Mountain 
and connect on level 5 with the Battle Mountain tunnel opening into Arequa Gulch, 
between Eclipse and the Economic mill. Level 1 also connects with a long adit 
called the Ithaca tunnel, which has its portal about 500 feet southwest of the Ajax 
shaft, in the gulch between Scpiaw and Battle mountains. 
LODE SYSTEMS. 
The dominant fissure zones in the Ajax mine strike about N. 30° W., running 
general^ parallel with a number of phonolite dikes. Fissures and dikes dip south¬ 
west, as a rule, at angles near 70°. The principal lode is the Apex, which should 
outcrop along a line connecting the McKay shaft, near the northwest corner of the 
Dead Pine claim, with the Victor Consolidated shaft, near the north end of the 
claim of the same name. The Apex lode accompanies a phonolite dike and dips 
southwest at an average angle of 72°. 
About 400 feet northeast of the Apex vein is a second zone of nearly northwest- 
southeast fissures which have produced some ore and are supposed to represent 
the northwesterly continuation of what is known as the Bobtail vein in the Granite 
