VANCOUVER, Feb. 13, 2013 /CNW/ - Curis Resources Ltd. ("Curis" or the
"Company") (TSX: CUV), is pleased to announce the results of the
Prefeasibility Study (PFS) on its Florence Copper Project in central
Arizona, USA. The PFS report is authored by M3 Engineering &
Technology Corp. (U.S.), with input from a number of other specialized
and experienced consulting and advisory firms in the areas of
hydrology, geology, in-situ extraction, oxide metallurgy and cultural
resources.
The PFS supports the findings of the Company's September 2010
Preliminary Economic Assessment (PEA) projecting low capital and
operating costs and favorable economic potential.
Highlights of the outcomes of the base case analysis are as follows:
- The base case economics utilize a US$2.75 per pound long-term copper
price and an average design production rate of 55 million pounds
(27,500 tons) of copper per year in the first 5 years, rising to 85
million pounds (42,500 tons) in year 6.
- The base case economics indicate pre-tax Net Present Value (NPV) of
US$748 million at a 7.5% discount rate with an Internal Rate of Return
(IRR) of 38% and a pre-tax 2.4-year payback of initial capital.
- At a US$3.00 per pound copper price, the pre-tax NPV increases to $875
million and the project has an IRR of 41%.
- Life of project direct operating cost is estimated at US$0.79 per pound
copper recovered.
- Initial capital costs are estimated at US$196 million. This represents
an 18 % decrease from the initial capital cost estimate presented in
the 2010 PEA. The commercial operating life of the project has also
been extended from 19 to 25 years.
- Operations will occur on land owned by and leased by Curis from the
Arizona State Land Department (ASLD) for a total of 13 years. The
first 9 years of copper production will occur exclusively on ASLD land
and are scheduled to begin in 2016. In year 10, production would
expand on to private patented land owned by Curis.
"Completion of a positive Prefeasibility Study for the Florence Copper
Project is a critical milestone for Curis," said Michael McPhie, President and CEO of Curis Resources Ltd. "The study further confirms the robust economic potential indicated by
the Company's 2010 PEA. And with capital and operating costs that are
estimated to be among the lowest in the global copper industry and a
revised near term development plan now in place that provides a clear
path to commercial operations, the PFS demonstrates both the economic
and technical viability of the Florence Copper Project."
The Florence Copper Project
The Florence Copper Project is an advanced-stage copper development
project located in central Arizona, and owned 100% by Curis. The
project site hosts a shallowly buried porphyry copper deposit with a
significant oxide mineral resource that is amenable to in-situ copper
recovery and industry-standard solvent extraction and electrowinning
(SX-EW) copper production. The Florence deposit was advanced to a
prefeasibility study level of assessment and achieved full project
permits when owned by BHP Copper (BHP) in the late 1990s. Curis is now
amending and updating these operational permits through a well-defined
and time-limited amendment process with a goal of initiating copper
production at a Phase 1 production test facility in late-2013. BHP
operated a successful ISCR production test at the Florence Copper
Project in 1998 which confirmed the viability of utilizing in-situ
production techniques for extracting copper. The production test and
an extensive groundwater monitoring program over the past 16 years have
also conclusively demonstrated that ISCR techniques can be operated
without adverse impacts to local or regional ground water quality.
Details of the Prefeasibility Study Results
A summary of the PFS results based on long term US $2.75 and US$3.00 per
pound copper prices.
FLORENCE COPPER PRE-FEASIBILITY STUDY FINANCIAL MODEL RESULTS
Category | Base Case by M3 At $2.75 long-term Cu/lb | Base Case by M3 At $3.00 Cu/lb |
Years of Commercial Production |
25
|
25
|
Total Copper Produced (pounds) |
1,695,000,000
|
1,695,000,000
|
Initial Capital Costs ($) |
$196 million
|
$196 million
|
Payback of Capital (pre-tax/after tax) |
2.4 years/ 2.9 years
|
2.4 years / 2.9 years
|
Internal Rate of Return (Pre-tax)/Internal Rate of Return (post-tax) |
38% / 31%
|
41% / 34%
|
Life of Mine Direct Operating Cost ($/pound Cu Recovered) | $0.79 | $0.79 |
Life of Mine Total Production Cost ($/pound Cu Recovered) | $1.09 | $1.11 |
Pre-tax Net Present Value (7.5 % discount rate and long term $2.75 per
pound copper price) | $748 million | $875 million |
Post-tax Net Present Value (7.5% discount rate and long term $2.75 per
pound copper price) | $505 million | $632 million |
Total Number of Years of Production on Arizona State Land |
13
|
13
|
Initial capital costs include an average contingency of 20%.
Key Aspects and Assumptions of the Prefeasibility Study
The following are some key aspects and development revisions that have
been included in the PFS. These represent key changes or modifications
to the plans for developing the project as compared to the development
plan included in the 2010 PEA.
-
A revised extraction plan that utilizes existing facilities and locates
the well field, copper processing plant, water management facilities
and related infrastructure on the 160-acre ASLD lease area controlled
by Curis for the first 9 years of operations.
-
A revised annual production scenario averaging 55 million pounds of
copper cathode for years 1 through 6, optimum production averaging 85
million pounds of copper cathode during years 7 through 21, and a
decline thereafter.
-
Updated total copper recovery estimates announced in Curis' January 7,
2013 Press Release. The copper recovery estimates used in the PFS are
based on work undertaken by Metcon Research of Tucson, Arizona and
supervised by Dr. Terrence McNulty, PE, of T.P. McNulty and Associates,
Inc. of Tucson, Arizona.
-
Inclusion of costs relating to project site reclamation and water
treatment.
-
The study is based on 339,953,000 tons of probable mineral reserves
grading 0.358% TCu at a cutoff grade of 0.05% TCu.
M3 completed the PFS of the ISCR operability of the Florence Copper
Project, utilizing industry standard criteria.
Richard Zimmerman, RM-SME, of M3 coordinated overall compilation of the
PFS and was involved with process design, infrastructure, capital and
operating costs and economic analysis, with contributions from Dr.
Terrence McNulty, PE, of TP McNulty and Associates (metallurgy and
leaching recovery), Michael Young, RM-SME, Haley & Aldrich (hydrology,
recoverable resource estimates, extraction methods and schedule,
environmental studies, and reclamation), and Corolla Hoag, CPG, RM-SME,
of SRK Consulting (geology and mineral resources, 2010, 2011). All are
qualified persons that are independent of the Company and have reviewed
this release. David Copeland, P.Eng., a qualified person who is a
director of Curis and supervised the work on behalf of the Company has
reviewed and approved the content of this release. A technical report
documenting the PFS will be filed on www.sedar.com within 45 days.
Project Status and Near Term Development Plan
Curis is awaiting approval from the Environmental Protection Agency
(EPA) for an Underground Injection Control (UIC) permit for Phase 1
Production Test Facility (PTF) at the Florence Copper Project. The
Company will initiate formal construction and operations of a Phase 1
PTF once the UIC permit is received.
About Curis
Curis Resources Ltd. is a mineral development company associated with
Hunter Dickinson Inc., a diversified global mining company with a
25-year history of mineral development success. Curis is focused on
the acquisition, development and operation of high-quality
next-generation copper properties in progressive jurisdictions around
the world. It is currently focused on advancing its 100% owned
Florence Copper Project in Arizona, USA to near-term production.
Michael McPhie
President & CEO
No regulatory authority has approved or disapproved of the information
contained in this news release.
CAUTION REGARDING FORWARD-LOOKING INFORMATION
This release includes certain statements that may be deemed
"forward-looking statements". All statements in this release, other
than statements of historical facts, that address exploration drilling,
test results, exploitation activities and events or developments that
the Company expects to occur, are forward-looking statements. Although
the Company believes that the expectations expressed in such
forward-looking statements are based on reasonable assumptions, such
statements are not guarantees of future performance and actual results
or developments may differ materially from those in the forward-looking
statements. Forward-looking statements are subject to known and
unknown risks, uncertainties and other factors that may cause the
Company's actual results, level of activity, performance or
achievements to be materially different from those expressed or implied
by such forward-looking statements. These include but are not limited
to:
-
uncertainties and costs related to the Company's exploration and
development activities, such as those associated with continuity of
mineralization, or determining whether mineral resources or reserves
exist on a property;
-
uncertainties related to the accuracy of our estimates of mineral
reserves, mineral resources; expected production rates, the timing of
expected production, the geotechnical or hydrological nature of mineral
deposits, and diminishing quantities or grades of mineral resources;
-
uncertainties related to the ability to obtain necessary environmental,
land use, and other licenses, permits, approvals, surface rights and
title for development projects;
-
uncertainties and delays related to judicial or regulatory proceedings;
changes in, and the effects of, laws, regulations and government
policies affecting our exploration, development and mining operations,
particularly laws, regulations and policies in jurisdictions in which
our projects are located, relating to environmental protection and
associated compliance costs, land use, effective future tax rates, the
protection of the health and safety of mine workers, and mineral rights
ownership;
-
changes in general economic, market or business conditions, the
financial markets and in the demand and market price for copper, gold,
and other minerals and commodities, such as diesel fuel, steel,
concrete, electricity and other forms of energy, mining equipment, and
fluctuations in exchange rates, particularly with respect to the value
of the U.S. dollar and Canadian dollar, and the continued availability
of capital and financing on terms acceptable to the Company;
-
the ability of the Company to achieve fulfillment of all conditions for
drawdown under its loan agreement with RK Mine Finance Trust I;
-
the risk of inadequate insurance or inability to obtain insurance to
cover all risks associated with the exploration, development or mining
of the Company's projects;
-
the risk of loss of key employees;
-
changes in accounting policies and methods we use to report our
financial condition, including uncertainties associated with critical
accounting assumptions and estimates;
-
environmental issues and liabilities associated with mining including
processing ore; and
-
labour strikes, work stoppages, or other interruptions to, or
difficulties in, the employment of labour in markets in which we
operate mineral projects or mines, or environmental hazards, industrial
accidents or other events or occurrences, including third party
interference that interrupt the production of minerals in our mines.
Investors are cautioned that any such statements are not guarantees of
future performance and actual results or developments may differ
materially from those projected in the forward-looking statements. For
more information on the Company, a more detailed description of the
assumptions used to develop the forward-looking statements and the risk
factors that may cause actual results to differ materially from
forward-looking statements, investors should review the Company's
continuous disclosure filings, copies of which are available at www.sedar.com.
Cautionary Note to U.S. Investors Concerning Reserve Estimates
The mineral reserves disclosed in this news release have been estimated
in accordance with Canadian National Instrument 43-101 - Standards of
Disclosure for Mineral Projects ("NI 43-101"), as required by Canadian
securities regulatory authorities. The Company is not subject to the
reporting requirements of section 13(a) of section 15(d) of the United
States Securities Exchange Act of 1934, as amended (the "Exchange
Act"). However, the Company's U.S. investors are cautioned that SEC
Industry Guide 7 under the Exchange Act, as interpreted by Staff of the
SEC, applies different standards in order to classify mineralization as
a reserve. As a result, the definitions of proven and probable
reserves used in NI 43-101 differ from the definitions in the SEC
Industry Guide 7. Under SEC standards, mineralization may not be
classified as a "reserve" unless the determination has been made that
the mineralization could be economically and legally produced or
extracted at the time the reserve determination is made. Among other
things, all necessary permits would be required to be in hand or
issuance imminent in order to classify mineralized material as reserves
under the SEC standards. Accordingly, mineral reserve estimates
contained in this news release may not qualify as "reserves" under SEC
standards. In addition, disclosure of "contained ounces" is permitted
disclosure under Canadian regulations; however, the SEC only permits
Exchange Act reporting companies to report reserves in ounces, and
requires reporting of mineralization that does not qualify as reserves
as in place tonnage and grade without reference to unit measures.
SOURCE: Curis Resources Ltd.
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