MINEBK00263

• County: San Miguel
• Document: Manager
• Suffix: A

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/- good view of the mill and back ground herewith. Tl3o mai8 tunnel starts
from back of mill. The water of the mine is used for m111ing purposes. The
face openit~ga and development upon this group of properties afforded good opp-
unity far research and proved moat interesting. :Sore time was perhaps devoted
it than should have been, but I felt the veins, etc., of the adjoining mines
ld be examined at say t&IDa, mhether the surYaae was covered with snow or not,
the opportunity afforded to examine surface openings anti secure a fail lino
rock samples could not be resisted.
The Japan Compaay has installed a compressor plant and started a lower
3s-cut tunnel. This will cut the Japan vein about 500 feet lovrer than present
ast workings. The length of tunnel wi11 be about 2600 fast. The wort, is pro-
tad across country for a few hundred feet so as to cut the big Cross vein be-
e mentioned sad thence into Japan, Corning, and other veins by drifting on
ike of Cross vela.
Conerally crass nut tunnels are to be diaaoutagod. Throughout the vac-
s mining diatriots of tho State many have been started and through failure to
the veinmany mines have been apafled.° In a rugged country ft is not un-
Gaon or rather Otis most couaLOn to see arose nut tunnels projected Yor several
dyed or several thousand feet to cut a rein upon which one or two ten-foot
es have boon sunk. Such mining is ill-advised and should be discouraged, un-
it least the cantfmsfty of the veins and chatacter of ore occurrence is es-
liahed..
In the immediate eaotion under cnasideratlon there appears to be compar-
vely 3lttle rtak incurred in Dross-nut tunnel work. The longitudinal continu-
oY s txuaber of the veins has bees established. Several cross-cut tunnels
~e been driven arxi all have proven auoceasYul and so far demonstrated the veins
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