san antonio group, I agree Mike McKay's post answers Richard's question.
To me, the report says that the results came from the following places:
Hassayampa ore pile, Oro Grande mine, Weaver Creek.
To me, the method and procedures used were:
resin in pulp, chemical and fire
ores were pre-treated, fired in a furnace
with fluxes and a collector and subsequently electrowinned.
Identify of the test numbers to ore location and methods are clearly
not given, but to me it looks like all locations have precious metals
that can be extrated using current techniques.
I arrived at this conclusion from the following parts of the report.
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Over the past few years the company has concentrated its
efforts on the Hassayampa ore pile. The Fischer Report for INCO
encourages development of the Oro Grande mine as well as Weaver Creek.
In order to provide a more balanced approach, testing and evaluations
have been extended to include the Weaver Creek and Oro Grande ores.
The economics of resin in pulp requires a detailed evaluation. It was
decided to test a total of 10 different ores.
Different techniques were
used to attempt to determine how they affected recovery.
We recovered precious metals from all of the ores.
Although the results of our analyses indicated very high variability in
the rate of recovery, it did provide guidance as to which ores showed
the greatest promise and confirmed our chemical and fire assay results.
EVALUATION OF CONCENTRATOR
A total of 8 different ores were sent to a third party for
concentration. The methods used are standard for placer ores. Complete
results should be available by the end of March.
PRESENT SITUATION
The ores in the following chart were pre-treated, fired in a furnace
with fluxes and a collector and subsequently electrowinned.
The results listed above are from various ores, ore pre-treatments and
furnace practices.
FUTURE PLANS
4. Determine which ore(s) we should concentrate on - decision by March
16, 1999.
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Doug |
