TIDMRMM
RNS Number : 5545U
Rambler Metals & Mining PLC
19 January 2017
19 January 2017
Rambler Completes DMS Trial Testing to Support
2,000 tonne per day Expansion Plan
London, England - Newfoundland and Labrador, Canada - Rambler
Metals and Mining plc (TSXV: RAB, AIM: RMM) ("Rambler" or "the
Company"), a copper and gold producer, explorer, and developer
today provides an update on the ore pre-concentration test work
completed to date.
Dense Media Separation ('DMS') Project Highlights
As part of our ongoing technical evaluation of expanding the
Ming Mine beyond the current planned 1,250 metric tonnes per day
('mtpd') mining rate, the Company has been investigating Dense
Media Separation ('DMS') as a pre-concentration step before milling
of the ore in the processing plant. In 2016 approximately 2,200 dry
metric tonnes ('dmt') of run of mine low grade material (0.8%
copper) was processed. This material yielded 1,457 dmt of plant
feed material with a grade of 1.14% copper. This represents a 1.4X
increase of grade in this pre-concentration step recovering 93.6%
of the total contained copper prior to milling. The result is
consistent with similar testing completed in 2015 and the smaller
scale external DMS test results as outlined in the table below.
Norman Williams, President and CEO, commented:
"With the Phase II expansion into the LFZ well underway, the
Company is now focussing its efforts on determining the economics
of installing and operating a commercially sized DMS plant at the
Ming Mine site in order to further optimize the economics of its'
mining and milling complex on the Baie Verte Peninsula. DMS and
shaft rehabilitation could further enhance project economics over
the short and long term. Management is working towards compiling
the necessary information and technical work for a full analysis
during the fall of 2017."
Dense Media Separation Project - Ore Pre-concentration
The 2016 DMS program was focussed on further testing of the LFZ
and MMS zones to determine the impact of scale up on performance of
the DMS process. At Nugget Pond, the on-site demonstration plant
operated from September to November 2016 and the same time period
in 2015. During the 2016 programme, 2,237 dmt of feed material was
processed from the Ming Mine. The feed materials included Lower
Footwall Zone ('LFZ'), massive sulphide zones ('MMS'), and a
blended feed of LFZ and MMS with copper grades averaging 0.80%.
Over the 2016 test period, 1,457 dmt of pre-concentrate were
produced, representing a 33% mass rejection, at a copper grade of
1.14%. In terms of grade improvement, this represents an upgrade
ratio of 1.42. Copper recoveries in the DMS plant averaged 93.6%
during the same period. The table below highlight the results of
2016 and 2015 onsite demonstration programmes along with previous
external results. The Ming Mine pre-concentration test programmes
have been developed, and partially funded, with the assistance of
the Research & Development Corporation of Newfoundland and
Labrador ('RDC').
With the Phase II expansion into the LFZ well underway, the
Company is now focussing its efforts on determining the economics
of installing and operating a commercially sized DMS plant at the
Ming Mine site in order to further optimize the economics of its'
mining and milling complex on the Baie Verte Peninsula.
The LFZ mineral resource estimate is currently 26 million tonnes
with 1.47% copper at a copper cut off of 1.0%. (See Technical
Report dated September 2015). Of this resource less than 10 million
tonnes of material was evaluated and incorporated into the Phase II
mine plan as a mineral reserve. Should DMS pre-concentration be
implemented at the mine site, there may be an opportunity to
re-evaluate the LFZ reserve criteria with the goal to convert more
of the in-situ mineral resource into reserve.
Testing Period Head Grade Final Upgrade Copper Mass
Cu (%) Grade Factor Recovery Rejection
Before Cu (%) (%) (%)
DMS After
DMS
------------------ ----------- -------- -------- ---------- -----------
Fall 2016
(Demonstration
Plant(1)
) 0.80 1.14 1.42 93.6 33.3
Fall 2015
(Demonstration
Plant(1)
) 1.28 1.80 1.41 92.9 33.1
Fall 2014 1.40 2.05 1.46 95.6 31.2
(Lakefield
Pilot Plant(2)
)
Variability
Testing(3) 1.39 2.27 1.63 95.6 41.4
(ROM - 2014)
Variability
Testing
(VAR-01 -
2014) 2.01 2.85 1.42 96.8 31.7
------------------ ----------- -------- -------- ---------- -----------
Notes:
1. Demonstration plant testing was completed onsite at Nugget
Pond with Rambler operators, overseen by Thibault & Associates
Inc. Results show an average of multiple runs.
2. Pilot Plant testing was completed at SGS Canada Inc, overseen by Thibault & Associates Inc.
3. Variability testing was completed by Thibault & Associates Inc.
ABOUT RAMBLER METALS AND MINING
Rambler is a mining and development company that in November
2012 brought its first mine into commercial production. Rambler has
a 100 per cent ownership in the Ming Copper-Gold Mine, a fully
operational base and precious metals processing facility and year
round bulk storage and shipping facility; all located on the Baie
Verte peninsula, Newfoundland and Labrador, Canada.
Rambler's ongoing Phase II plans are to increase mine and mill
production to 1,250 mtpd by mid calendar 2017. This initial
expansion has been fully funded through CEII's investment. Rambler
will also continue advancing engineering studies on ore
pre-concentration (DMS) and shaft rehabilitation with a view to
further increase production to 2,000 mtpd at the Ming Mine. In
addition, Rambler has initiated a detailed study at the mill with a
goal to increase the gold recovery and production rate in the
copper concentrator.
Along with the Ming Mine, Rambler also owns 100 per cent of the
former producing Little Deer/ Whales Back copper mines and has
strategic investment in the former producing Hammerdown gold
mine.
Rambler is dual listed in London under AIM:RMM and in Canada
under TSX-V:RAB.
For further information, please contact:
Norman Williams, Peter Mercer
CPA,CA Vice President, Corporate
President and CEO Secretary
Rambler Metals & Rambler Metals & Mining
Mining Plc Plc
Tel No: 709-800-1929 Tel No: +44 (0) 20
Fax No: 709-800-1921 8652-2700
Fax No: +44 (0) 20
8652-2719
Nominated Advisor Investor Relations
(NOMAD)
David Porter, Craig Nicole Marchand Investor
Francis Relations
Cantor Fitzgerald Tel No: 416- 428-3533
Europe Nicole@nm-ir.com
Tel No: +44 (0)
20 7894 7000
Website: www.ramblermines.com
Larry Pilgrim, P.Geo., is the Qualified Person responsible for
the technical content of this release and has reviewed and approved
it accordingly. Mr. Pilgrim is an independent consultant contracted
by Rambler Metals and Mining Canada Limited. Tonnes referenced are
dry metric tonnes unless otherwise indicated.
Neither TSX Venture Exchange nor its Regulation Service Provider
(as that term is defined in the policies of the TSX Venture
Exchange) accepts responsibility for the adequacy or accuracy of
this release.
Caution Regarding Forward Looking Statements:
Certain information included in this press release, including
information relating to future financial or operating performance
and other statements that express the expectations of management or
estimates of future performance constitute "forward-looking
statements". Such forward-looking statements include, without
limitation, statements regarding copper, gold and silver forecasts,
the financial strength of the Company, estimates regarding timing
of future development and production and statements concerning
possible expansion opportunities for the Company. Where the Company
expresses or implies an expectation or belief as to future events
or results, such expectation or belief are based on assumptions
made in good faith and believed to have a reasonable basis. Such
assumptions include, without limitation, the price of and
anticipated costs of recovery of, copper concentrate, gold and
silver, the presence of and continuity of such minerals at modeled
grades and values, the capacities of various machinery and
equipment, the availability of personnel, machinery and equipment
at estimated prices, mineral recovery rates, and others. However,
forward-looking statements are subject to risks, uncertainties and
other factors, which could cause actual results to differ
materially from future results expressed, projected or implied by
such forward-looking statements. Such risks include, but are not
limited to, interpretation and implications of drilling and
geophysical results; estimates regarding timing of future capital
expenditures and costs towards profitable commercial operations.
Other factors that could cause actual results, developments or
events to differ materially from those anticipated include, among
others, increases/decreases in production; volatility in metals
prices and demand; currency fluctuations; cash operating margins;
cash operating cost per pound sold; costs per ton of ore; variances
in ore grade or recovery rates from those assumed in mining plans;
reserves and/or resources; the ability to successfully integrate
acquired assets; operational risks inherent in mining or
development activities and legislative factors relating to prices,
taxes, royalties, land use, title and permits, importing and
exporting of minerals and
environmental protection. Accordingly, undue reliance should not
be placed on forward-looking statements and the forward-looking
statements contained in this press release are expressly qualified
in their entirety by this cautionary statement. The forward-looking
statements contained herein are made as at the date hereof and the
Company does not undertake any obligation to update publicly or
revise any such forward-looking statements or any forward-looking
statements contained in any other documents whether as a result of
new information, future events or otherwise, except as required
under applicable security law
This information is provided by RNS
The company news service from the London Stock Exchange
END
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