Kutcho Copper Corp. (TSXV: KC, OTCQX: KCCFF)
(“Kutcho Copper” or the “Company”) is pleased to announce the
results of the 2021 Feasibility Study (“FS” or “Feasibility Study”)
for the development of the 100% owned Kutcho copper and zinc
project (“the Kutcho project” or “the Project”) in northern British
Columbia.
- ROBUST PROJECT
ECONOMICS
- Base case metal
prices(1) of $3.50/lb Cu,
$1.15/lb Zn
- Pre-tax
NPV7% C$737 million, IRR
31%
- After-tax
NPV7% C$461 million, IRR
25%
- Spot metal
prices(2) of $4.50/lb Cu,
$1.57/lb Zn
- Pre-tax
NPV7% of C$1,467 million; IRR
51%
- After-tax
NPV7% of C$931 million; IRR
41%
- LOW COST
PRODUCTION
- Cash costs of US$1.11/lb of
CuEq(3)
- All-in sustaining
costs(4) of US$1.80/lb of
CuEq
- Initial capital cost of
C$483 million
- ELEVEN-YEAR OPEN PIT AND
UNDERGROUND MINE LIFE
- Metal production of 533
Mlbs Cu, 841 Mlbs Zn, 10.6 Moz Ag, 129.7 koz Au
- HIGH GRADE MINERAL
RESOURCE(5)
- 22.8 million tonnes grading
2.26% CuEq containing 1.1 Blbs CuEq (764 Mlbs Cu,
1,096 Mlbs Zn)
- An additional 12.9 million
tonnes grading 1.62% CuEq containing 460 Mlbs CuEq in the inferred
category (312 Mlbs Cu, 449 Mlbs Zn)
- STABLE MINING JURISDICTION
SITUATED IN NORTHERN BRITISH COLUMBIA, CANADA
- One of the safest global mining jurisdictions, located
in the traditional territories of the Tahltan Nation and Kaska Dena
Nation
Vince Sorace, President & CEO of Kutcho
Copper commented: “The Feasibility Study represents a major
milestone for Kutcho Copper as we continue to advance the
high-grade Kutcho copper-zinc project towards a development
decision. The significant redesign and engineering of the Project
delivers a mine plan that is a predominantly open pit mining
operation with the concurrent development of two underground mines.
The mine plan has resulted in a technically robust and capital
efficient Project with a minimised footprint. The results of the
Feasibility Study highlight the attractive economics of the Kutcho
project which are resilient at lower metal prices, very attractive
at base case prices and exhibit significant leverage to rising
prices as reflected in spot metal prices with a C$931 million
after-tax NPV7% and a 41% IRR. We believe that the results of the
Feasibility Study mean that Kutcho Copper is now one of the most
undervalued copper investment opportunities in North America.”
- Refer to Table 1 for base case metal prices
- Refer to Figure 1 for spot metal prices
- Pounds of copper equivalent calculated on base case metal
prices stated in Table 1
- Refer to Table 8 for all-in sustaining cost (AISC) calculation
methodology
- Refer to Table 2: Estimate of Mineral Resources for the Kutcho
Project
Table 1: Feasibility Study Headline
Results is available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/ec9126c4-68ad-4050-bf04-b86610a9713b
Notes:
- Tonnages are reported in metric tonnes (t), copper and zinc in
pounds (lbs), silver and gold reported in troy ounces (oz).
- "M" = million, "k" = thousand
- All tables report rounded figures and may not sum
precisely.
- The financial model is based on 100% of the Project being
financed through equity (no equity from other projects can be used
to offset the cost of capital). No debt or equity schedule is
included.
- All values, unless otherwise stated, are undiscounted.
- The highlights refer to the Feasibility Study base case. The
Wheaton Precious Metals Purchase Agreement is not applied to the
base case.
- Net smelter revenue (NSR) includes royalty payments.
- On-site construction period excludes the access road
construction and a 3 month commissioning period.
- Operating costs exclude the pre-production period which are
allocated to Pre-Production Capital).
- Cash or operating costs are operating expenses for mining,
plant operations and administration to the point of production of
the concentrate at the Kutcho site. It excludes off-site
concentrate costs, sustaining capital, closure/rehabilitation and
royalties. CuEq calculation assumes metal base case prices.
- All-in sustaining costs includes all cash costs, sustaining
capital expenses to support on-going operations (such as TMF
construction, major plant equipment replacement and repair),
concentrate charges, and royalties. It includes closure and
rehabilitation costs.
- No inflation or depreciation of costs were applied; all costs
are in 2021 money values. Major underground mobile equipment, all
open pit mobile equipment and the power plant are leased.
Contingencies included.
Figure 1: Sensitivity of Base Case
After-Tax NPV7% and IRR to Metal Prices (US$:C$ FX Rate at
0.76)
Note:
- Spot metal prices as at 26 October 2021: Copper US$4.50/lb,
Zinc US$1.57/lb, Silver US$24/oz, Gold US$1,788/oz.
Figure 1 is available
at https://www.globenewswire.com/NewsRoom/AttachmentNg/20736621-7aa6-4472-af01-6d18e350ea2b
Figure 2: Sensitivity of Base Case
After-Tax NPV7% and IRR to Copper Price Only (US$:C$ FX Rate
at 0.76)
Note:1. Only copper price adjusted.2. Spot copper
price as at 26 October 2021: US$4.50/lb.
Figure 2 is available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/d2c7b6bf-ffe2-430d-9cce-2ab807f3dd6d
Project Summary
The Kutcho project is located in northern
British Columbia (BC), approximately 100 km east of Dease Lake
within the traditional territories of the Tahltan Nation and Kaska
Dena Nation. The Project described in the Feasibility Study
contemplates mining the Main and Esso deposits to extract mainly
copper and zinc, with minor quantities of gold and silver. The Main
deposit is designed to be mined primarily as a conventional shovel
and truck open pit operation, with a deeper remnant mined by
underground longitudinal longhole open stoping (LLHOS) with
cemented rock fill (CRF). The underground Esso deposit is also
designed to be mined using LLHOS with CRF. A total of 17.3 Mt is
planned to be mined over an 11 year mine life, with 14.5 Mt coming
from the open pit and 2.8 Mt from the underground mines. A
steady-state crusher production rate of 4,500 tonnes per day (tpd)
is expected be achieved by the end of the first year of
operations.
After primary crushing at an average steady
state rate of 4,500 tpd, an ore sorter utilizing an x-ray
transmission (XRT) sensor would remove low-grade and waste material
from the feed to the SAG and ball mills, followed by conventional
flotation, regrind and dewatering circuits. Approximately 3,900 tpd
of ore would report to the milling and flotation circuit after ore
sorting. A total of 533 Mlbs of copper and 841 Mlbs of zinc as
primary products, and 10.6 Moz of silver and 129 koz of gold is
anticipated to be recovered to concentrate for sale.
The Project design includes an extensive
progressive reclamation programme, including the backfilling of the
open pit and water treatment during operations and for the closure
period.
The Project is located within the traditional
territories of the Tahltan Nation and Kaska Dena Nation. Kutcho has
a good working relationship with these Nations and has started
discussions with both to develop Economic Participation Agreements
that would safeguard their interests, provide employment, and
benefit the Nations economically.
Feasibility Study
Participation
The study was led by CSA Global and included the
support of SIM Geological Inc., Allnorth Consultants Ltd., ABH
Engineering Inc., Mineit Consulting Inc., Terrane Geoscience Inc.,
Piteau Associates, and Onsite Engineering Ltd., all of which are
independent of the Company.
Environment, Social and
Governance
EnvironmentalThe Kutcho Project is designed with
environmental protection in mind; final closure and reclamation
were key drivers in the design process. Various environmental
protection and impact mitigations are incorporated, with the
highlights being:
- Upgrading the site access road to
minimize impact on water quality and natural resources, including
run-off control and clear span bridge crossings
- Use of liquified natural gas for
power generation as opposed to diesel, significantly reducing the
generation of greenhouse gases and reducing the potential for fuel
spills
- The tailings management facility
(TMF) is designed to be a fully-lined impoundment with the rockfill
embankment comprising non-potentially acid generating (nPAG) waste
rock and built using downstream construction methods
- On closure, the TMF would be capped
with nPAG waste rock and revegetated
- Waste rock not required for
construction would be placed on a stockpile, most of which would be
backfilled into the pit during operations and revegetated
- Potentially acid generating (PAG)
waste rock would be placed on temporary stockpiles, all of which
would be rehandled back into the pit at the end of the mine life to
reduce the risk of future acid generation or metal leaching
- No infrastructure is located within
fish-bearing streams
- The water management system would
divert non-contact water around proposed mine facilities
- Contact water would be collected
for operational re-use or treated in a water treatment plant prior
to discharge to the environment to ensure adherence to provincial
and federal water quality guidelines
- At closure all buildings would be
removed, disturbed lands rehabilitated, and the property returned
to functional use according to as yet to be developed and approved
reclamation plans and accepted practices at the time of
closure
Social
- The Project is located within the
traditional territories of the Tahltan Nation and Kaska Dena
Nation
- Kutcho has a good working
relationship with these Nations and commenced discussions with both
to develop Economic Participation Agreements that would safeguard
their interests, provide employment, and benefit them
economically
- Kutcho Copper remains committed to
de-risking and advancing the Kutcho project in close consultation
with the Tahltan and Kaska Dena Nations
Governance
- Kutcho Copper is committed to the
principles of good governance, openness and transparency in all its
activities and has begun developing appropriate policies, controls
and practices for the next phase of the Project’s development.
Location and Access
The Kutcho project is located in northern
British Columbia, approximately 100 km east of Dease Lake and 425
km north of Terrace, BC. Access to the site during construction and
operations would be via an upgraded 120 km gravel road that joins
the Stewart–Cassiar Highway 37 directly south of Dease Lake.
In addition, a 1,000 m long airstrip is located about 10 km to the
northwest of the mine site.
First Nations and Local
Communities
The Kutcho project is located within the
traditional territories of the Tahltan Nation and Kaska Dena
Nation. The closest community to the mine site is Dease Lake.
Traditional use of lands and resources in the vicinity of the
Project have been documented for both the Tahltan Nation and Kaska
Dena Nation. Kutcho Copper is committed to working and consulting
with the First Nations following a jointly developed Consultation
Plan. To this end, Kutcho Copper and the Tahltan Nation and Kaska
Dena Nation have already signed several agreements. Kutcho Copper
has also initiated discussions to develop the access road to the
Project site in partnership with Tahltan Nation and Kaska Dena
Nation.
Mineral Resource Estimate
The mineral resource estimate for the Kutcho
project was prepared by SIM Geological Inc. in accordance with
current CIM standards, definitions and guidelines, with an
effective date of 30 July 2021. Mineral resources tabulated below
are inclusive of mineral reserves.
Table 2: Kutcho Project - Estimate of
Mineral Resources Inclusive of Reserves (effective 30 July
2021) is available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/04b7333f-a379-4f3b-8d1c-21a923e944dd
Notes:
- The mineral resource estimates in
the table above form coherent bodies of mineralisation that are
considered amenable to a combination of open pit and underground
extraction methods based on the following parameters: Base Case
Metal Prices: Copper US$3.50/lb, Zinc US$1.15/lb, Silver
US$20.00/oz, Gold US$1600/oz. Projected operating costs: Mining
(underground) C$56.58/t, Mining (open pit) C$3.49/t, Processing
C$26.97/t, G&A C$7.89/t. Process recoveries Main and Sumac:
Copper 87.6%, Zinc 64.3%, Gold 58.0%, Silver 57.9%. Process
recoveries Esso: Copper 94.5%, Zinc 89.3%, Gold 66.0%, Silver
71.2%. Pit slope angle 48.9 degrees.
- Copper-equivalent grades at Main
and Sumac are calculated based on the formula: CuEq = (Cu% x 0.876)
+ (Zn% x 0.241) + (Au g/t x 0.441) + (Ag g/t x 0.006).
Copper-equivalent grades at Esso are calculated based on the
formula: CuEq = (Cu% x 0.945) + (Zn% x 0.310)+(Ag g/t x 0.006)+(Au
g/t x 0.466). The base case cut-off grade for mineral resources
considered amenable to open pit extraction methods at the Main
deposit is 0.45% CuEq while the cut-off grade for mineral resources
considered amenable to underground extraction methods at Main and
Sumac deposits is 1.05% CuEq and is 0.95% Cu at the Esso
deposit.
- Mineral resources are not mineral
reserves and do not have demonstrated economic viability. These
mineral resource estimates include inferred mineral resources that
are considered too speculative geologically to have economic
considerations applied to them that would enable them to be
categorized as mineral reserves. It is reasonably expected that the
majority of inferred mineral resources could be upgraded to
measured or indicated mineral resource with continued
exploration.
- All figures are rounded to reflect
the relative accuracy of the estimate and therefore numbers may not
appear to add precisely.
- The estimate of mineral resources
was calculated based on the Canadian Institute of Mining,
Metallurgy and Petroleum (“CIM”), CIM Standards on Mineral
Resources and Reserves, Definitions and Guidelines prepared by the
CIM Standing Committee on Reserve Definitions.
- The effective date of the estimate
of mineral resources is July 30, 2021. Kutcho Copper is not aware
of political, environmental, or other risks that could materially
affect the potential development of the mineral resources.
Mineral Reserve Estimate
The mineral reserve estimate for the Kutcho
project, with an effective date of 4 November 2021, was prepared by
CSA Global Pty Ltd and reported in accordance with the National
Instrument 43-101. The mineral reserves are estimated using current
CIM standards, definitions and guidelines. Mineral reserves for the
Project are a subset of the measured and indicated mineral
resources. The mineral reserves are inclusive of diluting material
that would be mined and delivered to the processing plant, and
include suitable discounting to allow for losses typically incurred
during mining.
Table 3: Kutcho Project - Mineral Reserve
Estimate (effective 4 November 2021) is available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/cb6cbca9-e773-48b5-90d6-8ee1900eda0a
Notes:1. CIM definitions were followed for
Mineral Reserves.2. Mineral Resources are reported inclusive of
Mineral Reserves.3. The Inferred Mineral Resource does not
contribute to the financial performance of the Project and is
treated in the same way as waste.4. Sum of individual amounts may
not appear to equal the totals due to rounding.5. Metal prices -
copper US$3.50/lb, zinc US$1.15/lb, silver US$20/oz, and gold
US$1,600/oz.6. No previous mining has occurred at the Project
site.7. The reference point at which the Mineral Reserves are
defined is where the ore is delivered to the crusher.8. There is no
known likely value of the following factors of mining,
metallurgical, infrastructure, permitting or other relevant factor
that could materially affect the estimate.9. A complex NSR formula
has been applied that varies for oxide and sulphide rock types and
also varies for head grade and is fully documented within the
NI43-101 Technical Report of the Feasibility Study. 9a. The oxide
NSR formula can be approximated to +/- 1% accuracy for average head
grades as: NSR ($/t) = 50.26 x Cu% + 7.09 x Zn% + 0.14 x Ag_gpt +
8.94 x Au_gpt. 9b. The sulphide NSR formula can be approximated to
+/- 1% accuracy for average head grades as: NSR ($/t) = 57.82 x Cu%
+ 9.94 x Zn% + 0.34 x Ag_gpt + 22.52 x Au gpt.
Underground Specific Notes:10. Underground
Mineral Reserve cut-off grade was C$129.45/t NSR.11. The minimum
pre-dilution mineable width applied was 2.5m, average stope
dimensions of 25m height, 13.1m wide and length of 42m and a
minimum footwall dip of 47 degrees.12. A 0.75m footwall and a 0.75m
hanging wall dilution is applied and wall dilution grades were
taken from estimated block grades in these locations.13. A net
mining recovery and mining loss estimate after wall dilution was
estimated as +2.2% tonnage and -6.2% grade.14. Total net mining
dilution, recovery and mining loss of the Mineral Resource is
estimated at 0.34Mt (+12.0%) tonnes at 0.50% Cu, 1.13% Zn, 13 gpt
Ag, and 0.12 gpt Au.15. All stopes included in the Mineral Reserve
were optimized to maximise net cashflow and must be cashflow
positive including access capital.Open Pit Specific Notes:16. Open
Pit Mineral Reserve cut-off grade was C$38.40/t NSR for oxide and
C$55.00/t NSR for sulphide. The sulphide grade is an operational
cut-off and is above the break-even cut-off of C$38.40/t NSR.17.
Mineral resource between the break even and operational cut-off not
included in the Mineral Reserve amounts to 1.24 Mt at 0.53% Cu,
0.63% Zn, 9.6 gpt Ag and 0.13 gpt Au (Measured and Indicated).18.
The mining SMU is 5m x 5m x 5m. All ore is diluted to this block
dimension and is considered the minimum recoverable dimension for
the mining equipment and mining method selected.19. Average
dilution is estimated as 1.17Mt (+8.1% of Mineral Reserve total)
tonnes and grades are taken from waste materials, estimated as
0.12% Cu, 0.13% Zn, 1.0 gpt Ag and 0.08 gpt Au.20. Mining loss for
material above the operational cut-off is estimated as 0.79 Mt
(2.6% of Mineral Reserve total) at a grade of 0.91% Cu, 0.98% Zn,
4.8 gpt Ag and 0.53 gpt Au.21. The Open Pit Mineral Reserve lies
within a pit design that is supported by geotechnical drilling and
studies and optimized for net present value.
Considerations
British Columbia, Canada is a stable
geopolitical region with a well-understood mining regulatory regime
and rule of law. There are no known legal, political,
environmental, or other risks that could materially affect the
potential development of the mineral resources or mineral reserves.
Reporting and modelling of financial results were evaluated in
H2/2021 and terminated 5 November 2021 (the reserve statement
effective date). The NSR method was used to determine mineral
reserves and considers on-site operating costs, selling costs,
geotechnical analysis, metallurgical recoveries, allowances for
mining recovery and dilution, and overall economic viability as
detailed in the Feasibility Study.
Project Development and Closure
Plan
Development of the Project would comprise the
construction, operation, and closure of an open pit and underground
mining operation with associated processing and ancillary surface
structures. Excluding the access road, the mine would have a
two-year construction period (including commissioning) and a
10.75-year operational life. A small amount of ore would be mined
and processed towards the end of the construction period.
The existing 120 km long Boulder Trail access
road from Highway 37 would be upgraded to accommodate construction
vehicles and trucks transporting consumables, services and
concentrate. Road construction activities would commence
approximately three years prior to mine commissioning and would
include upgrading of the existing road surface, realignment along
small sections, and the construction of clear-span bridges and
culverts to facilitate creek crossings.
Construction of the mine site infrastructure
would commence one and three quarter years before plant
commissioning. This would include construction of the Main and Esso
underground mines’ shared portal, and waste development to access,
initially, the Main underground mine and, subsequently, the Esso
underground mine. Approximately 23% of the nPAG waste rock from the
pit would be used for the construction of the tailings management
facility. The open pit mine plan maximises direct backfill of PAG
waste rock into completed parts of the pit when available. Any
excess PAG waste rock would be stored in a discrete area of the
surface waste rock stockpile that will be underlain by buffering
nPAG waste. The plan also includes the development of a low-grade
ore stockpile which would be consumed after termination of open pit
mining. During this final operational rehandle phase of the Project
the surface PAG waste stockpile would be returned to the open pit
and capped by nPAG waste. The mine plan and rehabilitation strategy
are an integrated package and important outcomes of that strategy
would be that no PAG rocks are to remain outside of the pit area
after closure. The waste rock rehandle strategy will produce a
final landform that promotes water runoff, and the placement of all
PAG material to the lower depths of the open pit mine.
Power for the operation would be provided by
four 2.5 MW LNG generators plus one on standby. A 2 MW diesel
generator would provide occasional plant start-up assistance.
In order to minimise potential environmental
effects, no infrastructure is located within fish-bearing streams.
All contact water would be treated prior to discharge to the
environment to ensure adherence to provincial and federal water
quality guidelines.
At closure, all buildings would be removed,
disturbed lands rehabilitated, and the property returned to
functional use according to as yet to be developed and approved
reclamation plans and accepted practices at the time of closure. By
closure the open pit is planned to be almost completely backfilled;
topsoiling and revegetation will follow. The TMF would be capped
with nPAG waste rock and revegetated. Contact water discharged into
the environment would be treated until water qualities meet
discharge criteria. It is anticipated that the site's active and
passive post-closure environmental management would continue for
approximately eight to ten years after closure. However, provision
is made for 25 years of active water treatment and a total of
thirty years of monitoring.
Mining
Mining is expected to be conducted by
conventional shovel and truck open pit and underground LLHOS
methods.Open pit mining at Main is expected to commence during the
construction period and ramps up over a two-year period before
reaching an estimated average steady production rate of 1.8 Mtpa of
ore at the end of Year 2. The open pit has an estimated eight-year
life with a total of 14.5 Mt of ore mined at an average strip ratio
of 5.6:1.
Figure 3: Ore by Source and
NSR
Figure 3 is available
at https://www.globenewswire.com/NewsRoom/AttachmentNg/bfbb5cae-a530-4359-91e9-175dc77dd54c
Underground mine development is expected to
commence two years before production. A single portal would be used
to access both the Main and Esso ore bodies. Access to the Main
underground mine would be via an initial 340 m long decline. The
Main underground mine would be located beneath the Main open pit
and is separated from it by a crown pillar. The top of the Esso
deposit is approximately 400 m below surface and would be accessed
by an 1,800 m decline extending from the Main ramp. Further decline
ramps are required to access the production stopes in the Main and
Esso mines.
Underground mining of both the Main and Esso
deposits is expected to be by longitudinal long-hole open stoping.
The stopes would be backfilled using cemented rock fill (mostly ore
sorter reject from the processing plant) and are planned to utilize
temporary rib pillars and cable bolting as primary stope support
measures. The underground portion of the Main deposit is expected
to have a three-year mine life, extending from Year -1 to Year 2.
Total ore production from Main underground would be 0.6 Mt at an
average rate of 600 tpd. Underground mining of the Main deposit
would be completed early in the life of the open pit with minimal
interference between the two operations anticipated. The 25 m crown
pillar is not planned for recovery.
Production from the Esso deposit is expected to
commence in Year 2 and ramp up to full production in the following
year. Total projected ore production from Esso is 2.2 Mt at a
steady state average rate of 0.3 Mtpa or 860 tpd. At these
production rates, mine life for Esso is estimated at nine years. As
reflected in Table 3, Esso ore contains higher average grades of
copper and zinc than the Main deposit. Consequently, even at the
higher cost of underground mining, ore production from Esso would
be scheduled as early as possible.
The mine schedule is expected to allow for the
stockpiling of low grade ore from the open pit throughout
operations, allowing higher grades to be processed earlier. The
lower grade stockpiles would be processed in the final years of
mine life (commencing in Year 8, but primarily from Year 9 through
Year 11).
Table 4: Kutcho Project - Open Pit and
Underground Mining Statistics (Incl
Pre-Production) is available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/bc09b8f9-cda1-4ae1-a191-20dcadd1784b
Note:1. Includes 1.25 years for pre-production and
stockpile rehandle periods2. Mining operational costs and tonnages
are inclusive of the pre-production period.
Metallurgy & Processing
The process flowsheet is based on both
historical test work and more recent test work carried out under
the direction of Kutcho Copper between 2018 and 2021. The ore grade
profile reflects the processing of high grade ore when available,
and stockpiling of low grade ore for processing in the later years
of mine life.
Figure 4: Kutcho Project – Flotation Feed
Grades
Figure 4 is available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/2e5da331-a02d-4050-8b8b-d4d252e42cb2
After crushing, ore >12.5 mm would report to
an XRT (X-ray transmission) ore sorting circuit. Ore sorting is
based essentially on density and an estimated 15% of the ore
reporting to the ore sorter would be rejected, with an overall
12.5% reduction of feed to the milling and flotation circuit. Ore
sorter rejects would be used for the underground cemented rock
fill. Ore would report to the SAG and ball mill for primary sizing
to a P80 of 55µm. Metal recovery is based on the sequential
flotation of copper minerals, followed by flotation of zinc
minerals. The flotation process uses sulphur dioxide-based reagents
for the initial depression of zinc and pyrite in the copper
flotation circuit, followed by the re-activation of zinc for the
zinc flotation stage using specific collector and frother reagents.
The copper rougher concentrate is reground (P80 of 15µm) and
upgraded in one cleaner stage to produce a final copper
concentrate. The zinc rougher concentrate is reground (P80 of 20µm)
and upgraded in three cleaner stages to produce a final zinc
concentrate. The flotation tailings would be dewatered, after which
they would be pumped to the TMF for storage.
The copper and zinc concentrate grades are
anticipated to vary based on the proportion of Main and Esso
deposit material being mined, blended, and processed. Respective
mass pulls are estimated to be 6.2% and 3.6% (dry tonnage). Gold
and silver are contained in both the copper and zinc concentrates.
The concentrates would be dewatered by thickening and filtration to
reduce the moisture content to about 9%. Concentrates would be
loaded separately onto trucks, sampled, and despatched to Stewart,
BC, a distance of 510 km, for onward shipping to international
smelters and refiners.
Table 5: Kutcho Project – Processing and
Concentrate Production is available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/2ad16985-7c54-43ba-8f19-a84e72259fc2
Notes:1. 10.75 years after pre-production, plus
0.25 years in pre-production start-up.2. 0.25 years for
pre-production and 2.75 for stockpile rehandle periods.3. Metal
recovery to concentrates compared to crusher head feed, and
includes the effects of metal loss due to the ore sorter and the
flotation process. 4. Payable metals include losses due to due to
transportation (0.25%) and smelter terms for the respective
concentrates. Timing delays due to transport and handling,
concentrate allotments, and inventory build-ups are also provided
for.
Infrastructure
Proposed infrastructure for the Project includes
on-site and off-site facilities. Off-site facilities include access
road improvements. On-site facilities include:
- Process plant including
comminution, XRT ore sorting, flotation and concentrate handling
facilities
- Tailings management facility, which
is also designed to store contact water
- Water management system including
contact water treatment, stormwater management, water supply, and
sediment control
- Power supply by four 2.5 MW LNG
generators, plus one in standby and one 2 MW diesel generator to
assist with start-up torque demands
- Ancillary services and
facilities
- Offices and workforce
accommodation
- Truck and maintenance shop,
warehouses, and
- Diesel, propane and LNG storage
facilities, and explosives magazine
Tailings and Water
Management
The tailings management facility would consist
of a rockfill embankment built using the downstream method. The
construction material would be nPAG waste rock sourced from the
open pit. The TMF would be a fully lined impoundment utilizing a
composite liner system and appropriate water management features.
The facility is designed to contain tailings solids and an annual
storage capacity of contact water.
The water management system would divert
non-contact water around the proposed mine facilities. Contact
water would be collected for operational re-use or treated in a
water treatment plant before discharge to the environment.
Labour
The mine is expected to operate on two 12-hour
shifts, 365 days per year, with four mining and maintenance crews.
Only two crews would be on duty at any time; one on dayshift, the
other on night shift, while the other two crews are offsite on
break. The majority of personnel would work a two-weeks-on,
two-weeks-off (2x2) fly-in/fly-out shift rotation. Some
administration personnel would be based in Whitehorse.
During construction, an average of 550
contractors and Kutcho personnel would be employed, with about 270
being on site at any one time. The total workforce during the
operational period is expected to be between 350 and 400, reducing
to between 200 and 250 when mining ceases and low-grade ore is
rehandled to the plant. The workforce is expected to be
accommodated on site in the proposed camp.
Capital Cost Estimate
The Feasibility Study outlines an initial
(pre-production) capital cost estimate of C$483M, including an
average contingency of 10.6%. Sustaining capital costs
(undiscounted, including contingency) over the life of the mine are
estimated at C$90M.
Initial open pit mining capital costs cover site
development for the pits, haul roads and stockpiles, and mining to
provide construction material and expose ore for processing.
Initial underground capital costs include the construction of the
underground portal, development to access the Main and Esso
deposits, and other infrastructure. The mobile mining fleets would
be leased from the equipment suppliers. The initial deposits on
leased equipment (typically 25%) are reflected as a capital cost,
with the remainder paid off over several years and treated as a
mining operating cost.
The TMF embankment material is supplied from the
open pit nPAG waste material, with Phase 1 construction captured as
a pre-production mining capital cost, and subsequent construction
phases as a mining cost. The LNG power generating sets would be
leased on the same basis as mobile mining equipment, with
repayments reflected as part of the power cost applied to the
various operations.
Initial, sustaining and closure capital costs
were estimated based on Q2/3-2021, unescalated Canadian dollars and
are summarized in the table below. Vendor quotes were obtained for
all major equipment. Some of the costs were developed from first
principles, while some were estimated based on factored references
and experience from similar projects.
A mine closure bond, lodged at the commencement
of construction activities and thereafter linked to progressive
site disturbance and post-closure management, is allowed for.
Physical closure, rehabilitation, and post-closure management costs
are estimated at $34M. A salvage value for equipment is applied at
the end of mine life.
Table 6: Kutcho Project – Capital Cost
Summary(1,2) is
available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/08a772e8-5f25-40ec-82ed-e46d92fbec47
Notes:1. All values stated are undiscounted.2.
No inflation or depreciation of costs were applied; all costs are
in 2021 money values. Major underground mobile equipment, all open
pit mobile equipment and the power gensets are leased.3. Includes
average contingency of 10.6%.4. Includes contingency of 15%.
Operating Costs
Operating cost estimates were developed from
vendor quotes and first principles based on Q2/3-2021 un-escalated
Canadian dollars.
Table 7: Kutcho Project - Operating Cost
Summary (Excluding
Pre-Production(1)) is
available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/45c2348a-b30c-40b0-9234-c379782df694
Notes:1. Pre-production tonnages and costs are
not included in the Life-of-Mine operating cost summary (these are
Years -2 and -1 and are capitalized).2. Year 1 includes pro-rated
adjustments for working capital3. No ore mined, rehandle period
Operating costs include the rehandling of waste
material to backfill the pit during mining and the processing of
the low-grade ore at the end of the mine life.
Over the life of the mine, the average operating
cost is estimated at C$65.89 per tonne of ore crushed.
Table 8: Kutcho Project - Cash Costs and
All-In Sustaining Costs is available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/44c8854f-1427-4cda-9c1a-52fa8084d3e9
Notes:1. Cash or operating costs are operating
expenses for mining, plant operations and administration to the
point of production of the concentrate at the Kutcho site. It
excludes off-site concentrate costs, sustaining capital,
closure/rehabilitation and royalties. CuEq calculation assumes
metal base prices.2. All-in sustaining costs includes all cash
costs, sustaining capital expenses to support on-going operations
(such as TMF construction, major plant equipment replacement and
repair), concentrate charges, and royalties. It includes closure
and rehabilitation costs.
The average cash cost over the life of the mine
is C$1.11 /lb CuEq and the average all-in sustaining cost (AISC) is
C$1.80 /lb CuEq.
Concentrate Selling Costs
Table 9: Kutcho Project – Concentrate
Selling Costs is available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/30d11112-7d22-45ad-9c0b-16a4e2212906
Royalties
A 2% NSR royalty held by Royal Gold Inc. over
certain portions of the Project has been applied to the cash flow
model for a total of C$26M (undiscounted).
Taxes
Tax considerations included in the cash flow
are:
- BC Mineral
Tax 13%
- BC Income
tax 12%
- Federal Tax
15%
Investment and new mine allowances have been
applied against the BC Mineral Tax. A 2% provincial
minimum tax payable on net current proceeds, which is credited
against the Mineral Tax, is calculated based on operating profit
less applicable capital cost deductions. The mining tax is
deductible in computing provincial and federal income tax. Canadian
Development Expenses and Canadian Exploration Expenses have been
applied to the tax model. Total taxes payable over the life of the
Project (undiscounted) are estimated at C$422M after allowing for
tax credits of C$30M accumulated by Kutcho Copper to date.
Economic Analysis
The economic analysis undertaken for this
Feasibility Study assumes that a copper and a zinc concentrate
would be produced. The copper concentrate would obtain value mainly
from copper, but also from contained silver and gold. The zinc
concentrate would primarily obtain value from zinc, but also gold
and sometimes silver. Kutcho Copper intends to sell the
concentrates to either traders or refineries and would not directly
produce metals. Appropriate deductions for treatment, refining,
transport and insurance costs are applied as summarized in Table 9.
Penalties for impurities and deleterious elements have been applied
to the copper and zinc concentrates as noted in Table 9. The
analysis assumes that the Project is 100% equity financed.
The Base Case metal prices and exchange rate
used in the economic evaluation of the Project are:
|
|
US$3.50/lb ($7,716/t) |
|
|
US$1.15/lb ($2,525/t) |
|
|
US$20.00/oz |
|
|
US$1,600/oz |
|
|
0.76:1 (US$:C$) |
There is no guarantee that any of the metal
prices used in the base case or sensitivities cases are
representative of future metals prices. The results of the pre- and
after-tax economic analyses are provided in Table 10.
The contribution to the Project economics by
metal type is approximately 65% from copper, 23% from zinc, 6% from
silver and 6% from gold.
Table 10: Kutcho Project - Summary of
Economic Valuation is available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/7f3727bd-6594-498c-ba59-e9abd1374646
Notes:1. Covers production years 1-11 only,
pre-production and Year 12 are excluded.
Table 11: Kutcho Project – Cash Flow
Summary is available at
https://www.globenewswire.com/NewsRoom/AttachmentNg/c20e0f51-0479-44bb-bddf-cad0d4d47634
Precious Metals Purchase
Agreement
Kutcho Copper entered into a Precious Metal
Purchase Agreement with Wheaton Precious Metals Corp. (“Wheaton”)
on 14 December 2017. The terms of this agreement are not included
in the Feasibility Study as it only comes into effect should
Wheaton elect to participate after the completion of the
Feasibility Study. Should Wheaton elect to participate, certain
revenue parameters will change. Full details of the Wheaton
Precious Metal Purchase Agreement will be stated in the Feasibility
Study Technical Report which will be released within 45 days of the
publication of this News Release.
Environmental Studies and
Permitting
Kutcho Copper does not anticipate that the
Project will trigger a federal impact assessment under the federal
Impact Assessment Act (S.C. 2019, c. 28, s. 1). The Project is
already in the BC assessment process and will require the
preparation of an application to the BC Environmental Assessment
Office (BCEAO) for an environmental assessment certificate under
the BC Environmental Assessment Act. Due to Feasibility Study mine
design changes, an amended Project Description will be submitted to
BCEAO.
Since acquiring the Kutcho project from Capstone
Mining in 2017, Kutcho Copper has undertaken baseline studies that
have continued to date. In 2021, Kutcho Copper embarked on an
extensive program to complete baseline studies for the
Environmental Assessment (EA) in addition to environmental studies
to support the Feasibility Study. These studies represent a
substantial dataset collected over a long period of time and will
support solid decision-making for the EA process. Kutcho Copper
intends to run a separate and parallel process for the EA process
and permitting.
Based on initial discussions between Kutcho
Copper, Tahltan Nation and Kaska Dena Nation, the BCEAO has
indicated that the access road could be removed from the EA
process.
Closure and reclamation activities will be
carried out concurrent with mine operations wherever possible and
consistent with an approved Reclamation and Closure Plan developed
in consultation with First Nations and regulators.
Qualified Persons
Robert Sim, P.Geo., a Qualified Person as
defined by NI 43-101, is responsible for the estimate of mineral
resources presented in this news release and has reviewed, verified
and approved the contents of this news release as they relate to
the mineral resource estimate, including the sampling, analytical,
and test data underlying the mineral resource estimate. Mr. Sim is
a consultant to the Company, independent from Kutcho Copper and
confirms there were no limitations from the Company in verifying
the drilling and sample data with site visit observations and
monitoring of the QA/QC program.
Andrew Sharp, P.Eng., (CSA Global), Paul Heaney
(CSA Global), Shervin Teymouri, P.Eng. (Mineit), Andre de Ruijter
P.Eng. (Mineit), James Garner P.Eng. (Tahltan Allnorth), Kelly
McCleod, P.Eng. (Tahltan Allnorth), Brent Hilscher, P.Eng. (ABH
Engineering), are Qualified Persons as defined by NI 43-101. They
were involved in the preparation of the Feasibility Study and they
have reviewed, verified and approved the technical and scientific
contents of this news release. The aforementioned are consultants
to the Company and independent from Kutcho Copper.
Mr. Garth Kirkham, P.Geo., Technical Advisor for
Kutcho Copper Corp., who serves as a Qualified Person under the
definition of NI 43-101, has reviewed and approved the technical
and scientific information in this news release.
Technical Disclosure
Data verification programs have included review
of QA/QC data, re-sampling and sample analysis programs, and
database verification. Validation checks were performed on data,
and comprise checks on surveys, collar co-ordinates and assay data.
In the opinion of CSA, sufficient verification checks were
undertaken on the database to provide confidence that the database
is virtually error free and appropriate to support Mineral Resource
and Reserve estimation.
For readers to fully understand the information
in this News Release, they should read the Technical Report (to be
available on www.SEDAR.com within 45 days of November 8, 2021) in
its entirety, including all qualifications, assumptions and
exclusions that relate to the information set out in this news
release that qualifies the technical information contained in the
Technical Report. The Technical Report is intended to be read as a
whole, and sections should not be read or relied upon out of
context. The technical information in this News Release is subject
to the assumptions and qualifications contained in the Technical
Report.
About Kutcho Copper Corp.
Kutcho Copper Corp. is a Canadian resource
development company focused on expanding and developing the Kutcho
high grade copper-zinc project in northern British Columbia.
Committed to social responsibility and the highest environmental
standards, the Company intends to progress the Kutcho project
through the Feasibility Study and permitting to a positive
construction decision.
About CSA Global Consultants Canada Inc.
(CSA Global)
CSA Global is an ERM Group Company that has been
providing services to clients across all mineral commodities and
regions globally for over 35 years. The team of geologists,
engineers, mining consultants and data specialists are some of the
most experienced and sought-after professionals across the mining
industry. The ERM Group provides further depth through a diverse
team of world-class experts that supports clients across the
breadth of their organizations to operationalise sustainability,
underpinned by a deep technical expertise in addressing their
environmental, health, safety, risk and social issues.
Vince SoracePresident & CEO, Kutcho
Copper Corp.
For further information regarding Kutcho Copper
Corp, please email info@kutcho.ca or visit our website at
www.kutcho.ca.
Cautionary Note Regarding Forward-Looking
Statements
Neither the TSX Venture Exchange nor its Regulation Services
Provider (as that term is defined in the policies of the TSX
Venture Exchange) accepts responsibility for the adequacy or
accuracy of this release.
This news release contains certain statements
that may be deemed “forward-looking statements” with respect to the
Company within the meaning of applicable securities laws.
Forward-looking statements are statements that are not historical
facts and are generally, but not always, identified by the words
“expects”, “plans”, “anticipates”, “believes”, “intends”,
“estimates”, “projects”, “potential”, “indicates”, “opportunity”,
“possible” and similar expressions, or that events or conditions
“will”, “would”, “may”, “could” or “should” occur. Although Kutcho
Copper believes the expectations expressed in such forward-looking
statements are based on reasonable assumptions, such statements are
not guarantees of future performance, are subject to risks and
uncertainties, and actual results or realities may differ
materially from those in the forward-looking statements. Such
material risks and uncertainties include, but are not limited to,
statements and information related to the FS, the Company’s ability
to raise sufficient capital to fund its obligations under its
property agreements going forward, to maintain its mineral tenures
and concessions in good standing, to explore and develop the Kutcho
project or its other projects, to repay its debt and for general
working capital purposes; changes in economic conditions or
financial markets; the inherent hazards associates with mineral
exploration and mining operations, future prices of copper and
other metals, changes in general economic conditions, accuracy of
mineral resource and reserve estimates, the potential for new
discoveries, the potential to convert inferred resources to
indicated or measured resources, the potential to optimize the mine
plan, the ability of the Company to obtain the necessary permits
and consents required to explore, drill and develop the Kutcho
project and if obtained, to obtain such permits and consents in a
timely fashion relative to the Company’s plans and business
objectives for the projects; the general ability of the Company to
monetize its mineral resources; and changes in environmental and
other laws or regulations that could have an impact on the
Company’s operations, compliance with environmental laws and
regulations, aboriginal title claims and rights to consultation and
accommodation, dependence on key management personnel and general
competition in the mining industry. Forward-looking statements are
based on the reasonable beliefs, estimates and opinions of the
Company’s management on the date the statements are made. Except as
required by law, the Company undertakes no obligation to update
these forward-looking statements in the event that management’s
beliefs, estimates or opinions, or other factors, should
change.
Note to US Investors
This news release has been prepared in
accordance with the requirements of the securities laws in effect
in Canada, which differ in certain material respects from the
disclosure requirements of United States securities laws. The terms
"measured mineral resource", "indicated mineral resource" and
"inferred mineral resource" and “mineral reserve”, “proven mineral
reserve” and “probable mineral reserve” are Canadian mining terms
as defined in accordance with NI 43-101 and the Canadian Institute
of Mining, Metallurgy and Petroleum (the "CIM") -
CIM Definition Standards on Mineral Resources and Mineral Reserves,
adopted by the CIM Council, as amended. NI 43-101 is a rule
developed by the Canadian Securities Administrators that
establishes standards for all public disclosure an issuer makes of
scientific and technical information concerning mineral projects.
The definitions of these terms differ from the definitions of such
terms for purposes of the disclosure requirements in the United
States.
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