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18-03-2019, 09:26 AM
#4091
Member
Life goes on. Another 2 weeks since comments of no news from NTL.
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18-03-2019, 12:02 PM
#4092
This is from 1 year ago....
New Talisman Gold Mines Limited Ordinary Shares
Announcement
as at 13:33:34, Thursday 22 March, 2018 (NZDT)
Testwork reveals high recovery of gold
NTL
22/03/2018 13:33
MKTUPDTE
PRICE SENSITIVE
REL: 1333 HRS New Talisman Gold Mines Limited
MKTUPDTE: NTL: Testwork reveals high recovery of gold
HIGHLIGHTS
o 75kg of ore from the target areas of Mystery and Dubbo have been
treated using Gravity Concentration and Flotation methods;
o Testwork shows that 94% and 93.6% gold is recoverable in the Dubbo
and Mystery samples respectively using this process;
o Only environmentally benign reagents are used to achieve these
recovery levels;
o Design of pilot plant is underway.
Testwork Overview
Gold at the Talisman Mine is hosted in three major quartz veins, namely, the
Maria, Mystery and Crown/Welcome. Of these three the Maria vein is the major
contributor containing approximately 91% of the mines 469,000 Oz AuEq Mineral
Resource within the Dubbo, Bonanza and Woodstock Zones. The average grade of
the resources in these zones is estimated at 22.0g/t, 23.6g/t and 6.3g/t AuEq
respectively with some 313,000 Oz lying in the Dubbo Zone. (please see
announcement of
https://www.asx.com.au/asxpdf/201709...d5v2hnybjc.pdf) Exploration in
this area has yielded some spectacular results, notably hole BM 37 which
yielded 1.8 m @ 656g/t Au and 2080g/t Ag.
The Mystery Vein is a newly discovered vein that is highly prospective and a
potentially significant contributor to the future of the mine.
The metallurgical testwork was designed to deliver reliable and repeatable
results which will be used to inform engineering studies and cost estimates
both for pilot testwork during the Bulk Sampling Project and to inform design
in an updated Pre-Feasibility Study.
Testwork examined the processing path, post mining, as illustrated below:
There are four stages to the metalurgical process once ore has been mined and
crushed to a suitable feed size:
1) Grinding of ore to a suitable size to liberate gold;
2) Recovery of free milling gold in a gravity concentrator
3) Flotation of the concentrator tails to recover additional gold
4) Final recovery of gold from concentrate
Processing - Grinding
An important output from the testwork was to determine the optimal grind size
to liberate gold contained in the ore. Grinding (or milling) of ore takes
place in a ball mill and is the most expensive and energy intensive part of
the process. The finer the grind size required the more energy and time is
taken up. Two grind sizes were tested here with ore initially milled to p80
passing 106?m and again to p80 passing 53?m.
Processing - Gravity Concentration
The milled product was pulped to 50 % solids and the resultant pulp was
subjected to gravity concentration via a Knelson Centrifugal Concentrator.
The primary concentrate was upgraded via careful hand panning to provide
final concentrate mass yield approaching that of operating Knelson
installations. Final free gold concentrate (pan concentrate) was assayed via
total fusion to eliminate sampling error and nugget effect. Secondary
concentrate (pan tailing) and final tailings were dried, weighed and split
for Au assay.
Results from this show that 61.3% of gold in Dubbo ore, and 81.9% of gold in
Mystery ore can be recovered directly through this process.
Processing - Flotation
Tailings from the gravity concentrator were pulped to 20% solids and
subjected to single stage flotation with the addition of copper sulphate,
sodium isobutyl and Dow 250 which are all environmentally benign reagents.
This process resulted in recovery of an additional 32.7% of gold from Dubbo
ore and 11.7% from Mystery ore, yielding overall recoveries of 94% and 93.6%
respectively. Variance of recovery rates between the two grind sizes was
insignificant. This is comparable to the recovery achieved from Talisman ore
which has previously been treated using a cyanide leach process. Importantly,
the gravity and flotation process will produce inert tailings with low
sulphide levels.
Processing - Gold Recovery
On exit from the flotation tanks the concentrate can either be sold directly
on the market or the gold recovered on a shaker table and smelted.
These results are very pleasing with recovery rates nearing those attained
from similar tests involving cyanide leaching. Essentially this means that,
following pilot testing, the company will be able to use only environmentally
benign reagents for gold recovery which supports the company in its goal for
the Talisman Mining operation to be a responsible, environmentally
sustainable operation.
Chief operating officer and principal mining engineer Wayne Chowles said "The
results of this testwork provides the necessary hard data with which to
proceed with forward planning and takes us an important step closer to
realizing the potential of this magnificent orebody"
Next Steps - Pilot Plant Design
Results from the testwork set out above will inform the design of a pilot
plant layout which is expected to be similar to that set out in the process
flow diagram alongside. It is expected that the plant will be modular and
scaleable allowing components to be added as production volumes increase.
Further information on this will be released to the market as it becomes
available.
New Tal
Matthew Hill
Chief Executive Officer
New Talisman Gold Mines Limited
__________________________________________________ ________________________
About New Talisman Gold Mines Ltd
New Talisman Gold is a dual listed (NZSX & ASX: NTL) with over 2250
shareholders who are mainly from Australia and New Zealand and has been
listed since 1986. It is a leading New Zealand minerals development and
exploration company with a mining permit encompassing the Talisman mine, one
of New Zealand's historically most productive gold mines. The company has
commenced prospecting and upgrading activities at the mine and advance the
exploration project and increase its considerable global exploration target
into JORC 2012 resources.
Its gold properties near Paeroa in the Hauraki District of New Zealand are a
granted mining permit, including New Zealand's highest-grade underground gold
mine, a JORC 2012 compliant mineral resource of over 427,000 ounces au/eq at
an average above 15 gt AU/eq and a JORC compliant reserve statement. The
company owns 100% exploration permit Rahu, which lies along strike from the
Talisman mine of which 80% was recently acquired from Newcrest Mining. The
company will shortly commence exploration activities at Rahu.
End CA:00315905 For:NTL Type:MKTUPDTE Time:2018-03-22 13:33:37
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18-03-2019, 12:04 PM
#4093
So my question is what have they done since?
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18-03-2019, 12:11 PM
#4094
Obviously not enough for you. I thought that testing was performed overseas.
There has only been 6 and half weeks since the last quarterly. Be patient.
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18-03-2019, 12:32 PM
#4095
Member
Originally Posted by haewai
Obviously not enough for you. I thought that testing was performed overseas.
There has only been 6 and half weeks since the last quarterly. Be patient.
Generally I'm for being patient, but in that last quarterly they advised of an update in regards to Dubbo "in the next few weeks". Been silence since that.
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02-04-2019, 03:21 PM
#4096
Member
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02-04-2019, 03:48 PM
#4097
Luck comes in threes apparently so with good news from PLX and BLT perhaps NTLs time has come. Lol.
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10-04-2019, 09:53 PM
#4098
Member
Originally Posted by haewai
Yeah, an update on this would be reassuring:
"If the rise is stable the objective of removing 5+ tonnes of thebonanza grade material could be completed near the end of Q1. An update of progress in this areawill be provided to shareholders in the next few weeks"
And maybe an announcement of end of commissioning stage and starting of processing/testing:
"All components of the pilot processing plant have arrived and are being assembled off site. It isanticipated that commissioning will take place during late February with completion of an initial testbatch completed by end April."
Am not sure why a test batch takes two months to pass through the plant anyway. Standard NTL timeframes I guess.
And perhaps a left-field 'bonanza' announcement on a decision on this sort of thing:
"...the company continues to assess enquiries regarding altenative potential treatmentoptions."
Though that's possibly too much action for NTL.
Looking forward to the results of the pilot plant commissioning and completion of the testbatch at the end of April.
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11-04-2019, 07:02 PM
#4099
Member
That is almost 3 weeks away but I must admit I too am looking forward to an update
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12-04-2019, 09:52 AM
#4100
Member
Still waiting on that update that was due "a few weeks" from 31/01/2019
The few weeks will then be 3 Month exactly
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