MINEBK01089

• County: San Juan
• Volume: 6
• Document: Inspectr
• Suffix: B

MINING AND MINE METHODS.
The ehai't is 4' x 6' in the clear, divided into tyro compartments,
with a cat*e in each. One is used for hoisting, and the other as a
cou!tter• balance. Tile shalt is '100 i'eet deep, and co!:nects vrith
the A!neri.canTunnel, on the 6th, level, Titere are six levels; and
in cross cuts driven South from the shai't, on eslch level the Tavis
vein is cut. At 50 feet, or! the 200 foot level, the navis vsin
Trill average 30 feet vride, and is 700 feet 1Gllg, In this stope,
the same as in all others, the chutes are carried right up to
within 6 or 10 feet of L'he back, and the stops is filled irl~,rith
•raste rock to the top oi' ti!e chutes, .417. stopes are f lled this
same vray.
Tile vrork is carried on at the present time in tl!e yiry; and
American tunnels, the latter beinr; driven '700 feot deeper than
the King Tunnel. The work therefore is a17. in nerr p;round. (Sea
mep of mine i:: ti!e Bureau of 1".roes o1'i'ice ).
Tl:e method ~.f hoistinr; employed is an electric hoist and
cage. Sden are raised and lowered vrith hoisting mt!ci!iuery, and the
wei~;r!t oi' load hoisted 1s 2 tons, and t_Ze distance hoisted is from
ps, 100 to 700 feet. Tho cable is a 6~II cracibel ste=el, and is in i;;ood
rovided ~ condition, The sa~~e Y!as been in use sixt;r dayr., and clamps are
used on the end of cable whici! were put on si:ay days ago.
ut at ~ ~y'i?e cagy is eq;;ippeci with safety C1ut C1'le e.
for The mate ial is hoisted i'rmn tyro or more levels and .a cagor
tun:!el is employed.
opt in The bi~Ll lice is a 1~?. ir!ch hemp roes. 'i'he State code is
hoot employees and is posted at all level stations +utd nt collar of the
uth to shalt. An order, proi!ibiting persons i'rom ri.cli!y~; on loader] cn(;o or
stored bucket is posted near the coll.;ar of the sire{'t. Notices stating ti!o
raximum number oi' men permitted to'ride ulaot! cngo at o:~c time,
are pos i;ed nt collar oi' shaft and att each level :itati.PRi,•
4 x ~, Ot•et^on plne cap;o guides are used, a!td are in r;ootl con-
dJ.tion. ATall stations, there is n pnssai;o vray cxroi.ind vror4c1ni5
sirai't, eras t.'ne shaft, nt ul]. stations, lsprovidarci witP! ct E;•uard
rail. The uhai't is secured by a p111ar oi' r~;rottnd, upirn each lido
strfi'ic7ortt to secure sni'ety. AlJ. rn111 :i!oles ar winces mre oovered
or surrounded with Eunrd rails Ti!s sh:zi't is r:ot boi!~(~• surilc.