MINEBK01143

• County: Boulder
• Volume: 16
• Document: Inspectr
• Suffix: A

Bon].der County - 3.
ORE S & O R E B O D I E S.
The ore bodies are true-Fissure veins. There are six
known veins in the group but all work has been confined to the
Boulder Connt~ vein whioh has a strike oP northeast and south-
west and dips to the north. The vein varies in width Prom 1'
to 7' with an average width oP 3!. Length, 2,000'; height, 800'
The gangue is talc and the enclosing rooky are are altered
granite. There are Pive ore shoots Prom 40' to 180' in length
respectively.
The character oP vein Pilling ie iron sulphides and.Qua s
and the metals are gold, silver, lead, copper and zinc, with
gold the Principal metal. 8o essays or analyses were obtainablq.
The average value or ore per ton now being produced is ,^310 and ,
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I~I
the average nonthl~ production 1s 1,000 tone. All ore ;e trsa
ed in the company's mill aitnatte about 100' Peet distant Prom
the portal oP the tunnel.
S U R F A C E P Z A R m,
The surYeoe plant consists o3 a 60 h.p, tubular boiler -
no longer in use; I,eidlaw-Dun, gasoline air aomprseaor; 7b h.p.
electric actor. Electricity is used.
The compressor and boiler room ie Prams covered with
shingles, 24'x36' and situate 6' west oY the portal oP the
tunnel. An addition on the south side oP the boiler house is
used Por a changing room. On the went side oP the portal of the
tunnel, and 6' distant, is .a Preae building 12'x].8'in.aize that)
is used Yor a smith's shop, with an addition to this oP a room I
12'x12' that is need Por an office. There are six Preae dwell-
ing houses Beat or the portal oP the tunnel and 200' to 600'
-s4 distant respectively. Two Prams stables arc east oP the tunnel}
i
,~; one ie 16'x30' and Zb0' distant; the other ie 16'x20' and 300'
~:'
`~ distant. The ore is traru~ed Proa tie tunnel direct to the bins
in the mill oY whioh there are two, each having a capacity oP
i
,~~ 50 tone.

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