REP36175

• Permit No: M1988112
• IBM Index Class Name: Report
• Doc Date: 12/3/1992
• Doc Name: BATTLE MOUNTAIN RESOURCES INC SAN LUIS PROJECT DMG PN M-88-112
• From: BATTLE MOUNTAIN RESOURCES INC
• To: DMG
• Media Type: D
• Archive: No

III IIIIIIIIIIIII III
BATTLE MOUNTAIN GOLD COMPANY " ~ ~~ ~- ~ t'' )
November 25, 1992 ~~~ ~ 199
Mr. Larry Oehler ~' ~ ~ -
Division of Minerals and Geology ~.IVErk~` ~ .' ,% /~
1313 Sherman Street, Room 215
Denver, Colorado 80203 BAiiLE MOUNTAIN
GOLD COMPANY
Re: Battle Mountain Resources, Inc. - San Luis Project
DMG Permit No. M-88-112
Dear Mr. Oehler:
The following is a summary of the daily on-site cyanide analysis
performed on samples from the active (upper) pond and the
~-- collection pond during the week of November 15-21.
Active (Upper) Pond
Date CN-wad (nnml CN-total (ppm)
11/15 <0.1 0.65
11/16 0.20 0.76
11/17 0.50 3.02
11/18 0.26 1.58
11/19 0.38 1.96
11/20 0.39 1.73
11/21 0.39 1.88
Collection Poad
Date CN-wad (ooml CN-total (ppm)
11/15 0.62 2.06
11/16 2.29 5.15
11/17 1.37 4.39
11/18 sample not analyzed
11/19 3.92 6.44
11/20 2.05 4.23
11/21 3.93 4.56
On November 6, the hydrogen peroxide tank was reloaated, and
treatment of the collection pond began. The cyanide levels in the
collection pond have significantly dropped with the use of
peroxide. The collection pond was running in the 25-30 ppm CN-wad
range before peroxide treatment. The cold temperatures and reduced
holding time in the smaller pond are influencing the peroxide
treatment. 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 is operating smoothly.
The results of the weekly analysis of the inactive (lower) pond
showed 0.70 ppm CN-wad and 2.51 ppm CN-total.
Sincerely,
Alana L. Scott
Environmental Engineer
P.O. BO?C 310 SAN LUIS, COLORADO 81152
[phone] FA\ (719) 672-336J