REP22798

• Permit No: M1988112
• IBM Index Class Name: Report
• Doc Date: 11/30/1992
• Doc Name: FAX COVER
• From: BATTLE MOUNTAIN GOLD CO
• To: LARRY OHLER
• Media Type: D
• Archive: No

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BATTT,L MOUNTAIN GOLD COMPANY
November 25, 1992
Mr. Larry Oehler
Division of Minerals and Geology
1313 Sherman Street, Room 215
Denver, Colorado 80~~3
Re: iiattle Mountain ~urces, Inc. - Ban Luis Project
DMG Permit No. M-dd-112
Dear Mr. Oehler:
The following, is a summary of the
performed on samples from the
collection pond during the week of
Active (upper) Pond
Date ~N-wad (goml
11/15 <0,1
11/16 0.20
11f17 0.50
11/1H 0.26
11/19 0.3a
11/20 0.39
11/21 0.39
Collection Pond
Date CN-wad l~pml
11/15 0.62
11/16 2.29
11/17 1.37
11/18
11/19
11/20
11/21
On November
treatment of
S: 119atl,cn
peroxide. T
range before
ho.ldinq r.; ma
treatment.
,+~
daily on-site cyani a analysis
active (upper) pon~. and the
November 15-21.
CN-total ( Up]111
0.65
0.76
3.02
1.58
1.96
1.73
l.sa
CN-total (ppml
2.06
5.15
4.39
sample not analyzed
3.92 ~~
2.05 4.23
3.93 4.56
pond have oignificantly dru1313eu wJ.Llt tltH use O!
he collection pond was running in the 25-30 ppm CN-wad
6, the hydrogen peroxide tank was relocated, and
the collection pond began, The cyanide levels in the
peroxide treatment. The cold temperatures and reduced
i ^ *~~ vmall9r psrnd aro influencing the psi ~~al~le
Battle Mountain continues to work on adjusting the
peroxide flow rate with the outside advice of the DeGussa
Corporation, the hydrogen peroxide manufacturers.
As reflected by the low cyanide levels in the active pond, the INCO
circuit ie operating Rmoothly.
The results of the weekly analysis of the inactive (lower) pond
showed 0.70 ppm CN-wad and 2.51 ppm CN-total.
Si ~cerely,
~'
__:) c ~ ~
~ ~c~~ ~~~
Alena L. scott
Environmental Engineer
P.D. BUX 310 3nN LEIS. CDLUftADU 8l I5:
(719) G72-)362 PAX (719) n72-3)63
~~~.
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