K92 Mining Reports Updated Kora and Judd Resource Estimate – Measured and Indicated Resource of 2.6 Moz AuEq and Inferred Resource of 4.5 Moz AuEq
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NEWS RELEASE
K92 MINING REPORTS UPDATED KORA AND JUDD RESOURCE ESTIMATE –
MEASURED AND INDICATED RESOURCE OF 2.6 MOZ AUEQ AND INFERRED
RESOURCE OF 4.5 MOZ AUEQ
Vancouver, B ritish Columbia, December 5, 202 3 - K92 Mining Inc. (“K92” or the
“Company”) (TSX: KNT; OTCQB: KNTNF) is pleased to announce results from the updated
resource estimate completed on the Kora and Judd deposits, at its producing Kainantu Gold Mine
in Papua New Guinea . The resource estimate is based on surface and underground exploration
diamond drilling and underground face sampling. The focus of exploration at Kora and Judd since
the previous resource estimate s (previous e ffective date of October 31, 2021 for Kora and
December 31, 2021 for Judd) has been predominantly on resource growth.
Kora and Judd Deposit Mineral Resource Estimate Highlights
• Kora Measured and Indicated Resource of 2. 3 million ounces at 10.24 g/t gold
equivalent (“AuEq”) (1), representing a n +8% increase from the previous resource
estimate of 2.1 million ounces in October 2021.
• Kora Inferred Resource has increased substantially to 3.9 million ounces at 8.60 g/t
AuEq, representing a +58% increase from the previous resource estimate of 2.5
million ounces in October 2021. This has resulted primarily from successful drilling
of the southern extensions of the K1 and K2 lodes.
• Judd Measured and Indicated Resource of 0.35 million ounces at 8. 68 g/t AuEq (1),
representing a n increase of +167% from the previous resource estimate of 0.13
million ounces in December 2021.
• Judd Inferred Resource of 0.56 million ounces at 7.72 g/t AuEq , representing a
+211% increase from the previous resource estimate of 0.18 million ounces in
December 2021. The increase in the Judd resource has been the result of a significant
amount of drilling since the last resource, with drill defined strike length extended
+130% since the end of 2021.
• Significant component of the updated Kora and Judd Mineral Resource are high
grade (see Fig 3, 4, 7 and 8).
• Excellent reconciliation between mill feed and the updated resource model with a 1%
difference in gold ounces. Depletion from the previous resource based on production
was approximately 900 kt at 10.4 g/t AuEq (7.9 g/t Au, 0.68% Cu, 12 g/t Ag) or 300
koz AuEq contained metal(2).
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Resource Growth Opportunities and Exploration Targets
• Significant expansion potential at both the Kora and Judd vein systems. The Kora
vein system is open along strike and at depth, with exploration focused on Kora, Kora
South and Kora Deeps target areas. The Judd vein system is open in all directions,
with drilling focused on Judd, Judd South and Judd Deeps target areas. Drilling plans
to commence at Kora South Deeps and Judd South Deeps in 2024 (see Fig 10 and 11).
• In addition to the Kora and Judd vein systems , there are multiple near-mine high-
priority exploration areas including: Arakompa, Maniape and Karempe. Drilling at
Arakompa is planned to commence in late-2023 / Q1 2024 (see Fig 12).
• Multiple highly prospective porphyry targets also being explored, with drilling at the
A1 Porphyry target underway. The Blue Lake Porphyry deposit which hosts a 10.8
million ounces AuEq / 4.7 billion pounds inferred resource (see August 9, 2022 press
release) is open at depth and the Company plans to follow -up with a third , deeper
program.
• Currently up to 11 drill rigs operating and in October 2023, K92 increased its
exploration budget to a record of US$20 million.
Note (1): Cut-Off of 3 g/t gold equivalent.
Note (2): Based on production recorded from the beginning of Q4 2021 to the end of Q3
2023.
Table 1 – Global Kora and Judd Mineral Resource (Effective Date September 12, 2023, 3 g/t
gold equivalent cut-off)
Tonnes Gold Silver Copper AuEq
Mt g/t moz g/t moz % kt g/t moz
Kora
Measured 3.7 8.74 1.0 20.5 2.5 1.21 45.0 10.96 1.3
Indicated 3.1 6.99 0.7 21.9 2.2 1.31 41.3 9.40 1.0
Total M&I 6.9 7.94 1.8 21.1 4.7 1.25 86.2 10.24 2.3
Inferred 14.3 5.60 2.6 28.7 13.2 1.62 231.2 8.60 3.9
Judd
Measured 0.4 9.05 0.12 19.0 0.25 0.80 3.2 10.58 0.14
Indicated 0.8 6.37 0.17 15.6 0.42 0.73 6.2 7.76 0.21
Total M&I 1.2 7.24 0.29 16.7 0.67 0.75 9.4 8.68 0.35
Inferred 2.3 6.27 0.45 15.8 1.15 0.76 17.2 7.72 0.56
Kora and Judd
Measured 4.1 8.77 1.2 20.4 2.7 1.17 48.2 10.92 1.5
Indicated 4.0 6.86 0.9 20.6 2.6 1.19 47.4 9.05 1.2
Total M&I 8.1 7.83 2.0 20.5 5.3 1.18 95.6 10.00 2.6
Inferred 16.5 5.69 3.0 27.0 14.3 1.50 248.3 8.48 4.5
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• The Independent and Qualified Person responsible for the Mineral Resource estimate is
Simon Tear, P.Geo. of H & S Consultants Pty. Ltd., Sydney, Australia, and the effective
date of the estimate is September 12, 2023.
• Mineral Resources are not Mineral Reserves and do not have demonstrated economic
viability.
• Geological interpretation has generated a series of narrow, sub -vertical vein structures
based on delineated wireframes on 10m, 20m and 25m spaced cross sections. The design
of the lode wireframes is based on a combination of logged geology, Au, Cu & Ag as say
grades and locally on a nominal minimum mining width of 5.2m, all coupled with
geological sense.
• Resources were compiled at 3 g/t gold equivalent cut-off grades for Kora and Judd.
• Density (t/m 3) was modelled using Ordinary Kriging on 2,778 sample measurements.
Areas within the mineral wireframes where no density grades were interpolated had
average default values inserted at appropriate levels.
• Reported tonnage and grade figures are rounded from raw estimates to reflect the order
of accuracy of the estimate.
• Minor variations may occur during the addition of rounded numbers.
• Estimations used metric units (metres, tonnes and g/t).
• Gold equivalents are calculated as AuEq = Au g/t + Cu%*1.6481+ Ag g/t*0.0114. Gold
price US$1,700/oz; Silver US$22.5/oz; Copper US$4.00/lb. Metal payabilities and
recoveries are incorporated into the AuEq formula. Recoveries of 95% for copper and
80% for silver were used.
John Lewins, K92 Chief Executive Officer and Director, state d, “The updated Kora and Judd
Resource estimate has significantly exceeded our expectations for both the Measured and
Indicated resource and the Inferred resource. The combined Kora and Judd Measured and
Indicated resource increased +13%, net of depletion, to 8.1 million tonnes at 10.00 g/t AuEq for
2.6 million ounces AuEq, and the Inferred resource increased +70%, net of depletion, to 1 6.5
million tonnes at 8. 48 g/t AuEq for 4.5 million ounces AuEq. When comparing the updated
resource model’s depletion to mill actuals, Kainantu has delivered a gold reconciliation in -line
with the updated resource model within 1%.
Importantly, the resource growth was also achieved expeditiously, over a period of less than two
years and at discovery cost of less than US$7.5 per ounce gold equivalent. This was driven by the
strong continuity of the Kora and Judd vein systems, with almost all holes intersecting the
mineralized structure.
Looking ahead, exploration at the Kora and Judd vein systems will remain a major focus, with
drilling targeting multiple highly prospective target areas concurrently, including Kora, Kora
South, Kora Deeps, Judd, Judd South and Judd Deeps. Kora Deeps and J udd Deeps have only
recently commenced drilling from the twin incline , and the initial reported results from this area
via Judd underground development in late-Q3 have been very promising, including 4.6 m at 14.89
g/t AuEq and 6.8 m at 11.77 g/t AuEq from channel sampling in an area previously sparsely drilled
and interpreted to be waste. Later in 2024, exploration plans to commence at Kora South Deeps
and Judd South Deeps, also from the twin incline.
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Beyond the Kora and Judd vein systems, there are multiple highly prospective areas for resource
growth near mine infrastructure, including Arakompa, Maniape and Karempe. Exploration pad
construction at Arakompa, which hosts a historic resource of 800 koz a t 9.0 g/t Au, is underway
with plans to commence drilling near -term. Porphyry exploration continues to progress, with
drilling underway at A1 and plans for follow-up drilling at the Blue Lake Porphyry in the medium
term. Blue Lake hosts an Inferred Resource of 10.8 moz AuEq or 4.7 blbs CuEq.
Recently, in October 2023, K92 increased its exploration expenditure guidance to US$20 million.
This was driven by our conviction in the geological potential of the Kainantu Project and we look
forward to announcing results from multiple target areas near -term in addition to operational
announcements as we transform Kainantu into a Tier 1 Mid-Tier producer over the next 18 months
with construction of the Stage 3 and 4 Expansions underway.”
Key Assumptions and Parameters
Underground drilling consists of diamond core for a range of core sizes depending on the length
of hole and expected ground conditions. Sampling is sawn half core under geological control and
generally ranges between 0.5m to 1.0m. Underground face sampling is completed for every fired
round and is to industry standard. QAQC data indicated no significant issues with the sampling or
the accuracy of the on-site analysis. Current core recovery of the mineral zone is +95%, with initial
drilling recoveries around the 90% mark.
Geological logging is consistent and is based on a full set of logging codes covering lithology,
alteration, and mineralization. All sampling and analytical work for the mine exploration program
is performed by Intertek Testing Services (PNG) LTD, an independent accredited laboratory that
is located on site. External check assays for QA/QC purposes are performed at SGS Australia Pty
Ltd in Townsville, Queensland, Australia.
The geological interpretation of the vein systems is represented as 3D wireframe solids snapped
to a combination of diamond drillhole data and underground face sampling (see Fig 1 and 5).
Definition of the wireframes is based on identified gold (and copper and silver) mineralization in
drill core nominally at a 0.1-0.2 g/t Au gold cut-off in conjunction with geological control/sense
and current mining widths. The Kora Link is a broader zone of more variably continuous
mineralization and butts onto both the K1 and K2 lodes in various places. A total of 4 lodes were
delineated for the Judd deposit, with a dominant J1 lode and subordinate parallel lodes for J2, J3
and J1W.
The wireframes were used to extract 1 -metre ‘best-fit’ composites (minimum of 0.5m) from the
drillhole & sampling database for gold, copper and silver. A total of 30,791 composites were used
in the grade interpolation, 24,925 for Kora and 5,866 for Judd. A gold top cut of 1000 g/t was
applied to K2, a 400 g/t top cut was applied to the Kora Link and a 400 g/t top cut was applied for
the Judd composites. A top cut of 300 g/t was applied to the silver composites but no top cuts was
applied to the copper composites. Variography was good for the mined areas of K1 and J1 (due to
the face sampling) but only moderate to poor for other areas , as would likely be expected for the
style of mineralization.
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Grade interpolation of the composite data was completed using Ordinary Kriging with a block size
of 1m (X direction) by 5m (Y direction) by 5m (Z direction). A larger block size check model for
Kora indicated no evidence of over -smoothing of the gold grade with the smaller block size. A
check model excluding the face sampling data indicated no significant difference in gold grade for
the measured and indicated estimates at Kora.
Density data was modelled using Ordinary Kriging on a total of 2,778 sample measurements for
the different lodes. Density values were determined using the weight in air/weight in water method
(Archimedes Principle) on single pieces of representative core. Default average density values
were applied to the different lodes where there was a lack of modelled data. Average density for
the global estimates are 2.77t/m3 for Kora and 2.61t/m3 for Judd.
A three-pass search strategy was used for the grade interpolation. Search ellipse parameters are
listed below. 4 search domains with varying ellipsoid orientations were used for both of K1 and
K2 with the search ellipse orientations generally reflecting the subtle changes in dip and strike of
the vein systems. The much smaller Kora Link Lode required only 2 search domains as did the J1
and J2 lodes at Judd.
Table 2 – Mineral Resource Search Ellipse Pass Specifications
Pass No X radius
(m)
Y radius
(m)
Z radius
(m) Min Data Min Octants Max Data
1 2 25 25 12 4 32
2 4 50 50 12 4 32
3 12 125 125 6 2 32
Allocation of the classification of the Mineral Resources is derived from the search pass numbers
produced from the grade interpolation which essentially is a function of the drillhole and face
sample data point distribution. Additional considerations were included in the assessment of the
classification; in particular, the geological understanding and complexity of the deposit, sample
recovery, quality of the QAQC sampling and outcomes, density data, check models and
reconciliation with production. Defined shapes were used to better define the Measured Resource
distribution (i.e. the removal of the ‘spotted dog’ effect).
Table 3 – Resource Classification by Pass Category
Pass Category Resource Classification
1 Measured
2 Indicated
3 Inferred
All material mined within the mineral wireframes up to the effective date has been removed from
the resource model. Gold reconciliation of the new resource model with the global mill feed
material up to the end of the third quarter for 2023 has been reasonably good with the difference
in gold ounces from the mill being within ~1% of that estimated by the model.
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The Inferred Mineral Resources in this estimate have a lower level of confidence than that applied
to an Indicated Mineral Resource and must not be converted to a Mineral Reserve. It is reasonably
expected that the majority of the Inferred Mineral Resource could be updated to an Indicated
Mineral Resource with continued exploration.
Gold equivalents are calculated as AuEq = Au g/t + Cu%*1.6481+ Ag g/t*0.0114. Gold price
US$1,700/oz; Silver US$22.5/oz; Copper US$4.00/lb. Metal payabilities and recoveries are
incorporated into the AuEq formula. Recoveries of 95% for copper and 80% for silver.
The estimate of Mineral Resources may be materially affected by environmental, permitting, legal,
title, taxation, socio-political, marketing, or other relevant issues.
Mineral Resources, which are not Mineral Reserves, do not have demonstrated economic viability.
It is anticipated that the updated Mineral Resource estimate will not result in a material change to
the mineral reserve estimate set forth in the Technical Report entitled “Independent Technical
Report, Kainantu Gold Mine Integrated Development Plan, Kainantu Project, Papua New Guinea”
with an effective date of January 1, 2022 (the “IDP Technical Report”). In addition, the increase
to the Measured and Indicated mineral resources and inferred mineral resources will not materially
impact the design parameter s and conclusions outlined in the Kainantu Stage 3 Expansion
Definitive Feasibility Study Case or Kainantu Stage 4 Expansion Preliminary Economic
Assessment Case of the IDP Technical Report. However, as a result of the updated Mineral
Resource estimate, the Company expects the potential mine life to be extended for both the Stage
3 Expansion Definitive Feasibility Study Case and Stage 4 Expansion Preliminary Economic
Assessment Case.
Qualified Persons
K92 mine geology manager and mine exploration manager, Andrew Kohler, MAIG, a qualified
person under the meaning of Canadian National Instrument 43-101 – Standards of Disclosure for
Mineral Projects, has reviewed and is responsible for the technical content of this news release.
Data verification by Mr. Kohler includes significant time onsite reviewing drill core, face
sampling, underground workings, and discussing work programs and results with geology and
mining personnel.
Simon Tear, P.Geo of H & S Consultants Pty. Ltd. of Sydney, Australia is a Qualified Person as
defined under NI 43 -101 for the Mineral Resource estimate discussed above. Mr. Tear has
reviewed and approved the contents of this press release in relation to the Mineral Resources.
About K92
K92 Mining Inc. is engaged in the production of gold, copper and silver at the Kainantu Gold Mine
in the Eastern Highlands province of Papua New Guinea, as well as exploration and development
of mineral deposits in the immediate vicinity of the mine. The Company declared commercial
production from Kainantu in February 2018 and is in a strong financial position. A maiden resource
estimate on the Blue Lake copper -gold porphyry project was completed in August 2022. K92 is
operated by a team of mining company professionals with extensive international mine -building
and operational experience.
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On Behalf of the Company,
John Lewins, Chief Executive Officer and Director
For further information, please contact David Medilek, P.Eng., CFA , President at +1-604-416-
4445
CAUTIONARY STATEMENT REGARDING FORWARD -LOOKING INFORMATION: This news
release includes certain “forward -looking statements” under applicable Canadian securities legislation.
Such forward-looking statements include, without limitation: (i) the results of the Kainantu Mine Definitive
Feasibility Study, and the Kainantu 2022 Preliminary Economic Assessment, including the Stage 3
Expansion, a new standalone 1.2 mtpa process plant and supporting infrastructure ; (ii) statements
regarding the expansion of the mine and development of any of the deposits; (iii) the Kainantu Stage 4
Expansion, operating two standalone process plants, larger surface infrastructure and mining throughputs;
and (iv) the potential extended life of the Kainantu Mine.
All statements in this news release that address events or developments that we expect to occur in the future
are forward-looking statements. Forward-looking statements are statements that are not historical facts
and are generally, although not always, id entified by words such as “expect”, “plan”, “anticipate”,
“project”, “target”, “potential”, “schedule”, “forecast”, “budget”, “estimate”, “intend” or “believe”
and similar expressions or their negative connotations, or that events or conditions “will”, “wo uld”,
“may”, “could”, “should” or “might” occur. All such forward -looking statements are based on the
opinions and estimates of management as of the date such statements are made. Forward -looking
statements are necessarily based on estimates and assumption s that are inherently subject to known and
unknown risks, uncertainties and other factors, many of which are beyond our ability to control, that may
cause our actual results, level of activity, performance or achievements to be materially different from those
expressed or implied by such forward-looking information. Such factors include, without limitation, Public
Health Crises, including the COVID-19 virus; changes in the price of gold, silver, copper and other metals
in the world markets; fluctuations in the price and availability of infrastructure and energy and other
commodities; fluctuations in foreign currency exchange rates; volatility in price of our common shares;
inherent risks associated with the mining industry, including problems related to weat her and climate in
remote areas in which certain of the Company’s operations are located; failure to achieve production, cost
and other estimates; risks and uncertainties associated with exploration and development; uncertainties
relating to estimates of m ineral resources including uncertainty that mineral resources may never be
converted into mineral reserves; the Company’s ability to carry on current and future operations, including
development and exploration activities; the timing, extent, duration and economic viability of such
operations, including any mineral resources or reserves identified thereby; the accuracy and reliability of
estimates, projections, forecasts, studies and assessments; the Company’s ability to meet or achieve
estimates, projectio ns and forecasts; the availability and cost of inputs; the availability and cost s of
achieving the Stage 3 Expansion or the Stage 4 Expansion; the ability of the Company to achieve the inputs
the price and market for outputs, including gold, silver and cop per; failures of information systems or
information security threats; political, economic and other risks associated with the Company’s foreign
operations; geopolitical events and other uncertainties, such as the conflict s in Ukraine , Israel and
Palestine; compliance with various laws and regulatory requirements to which the Company is subject to,
including taxation; the ability to obtain timely financing on reasonable terms when required; the current
and future social, economic and political conditions, including relationship with the communities in Papua
New Guinea and other jurisdictions it operates; other assumptions and factors generally associated with
the mining industry; and the risks, uncertainties and other factors referred to in the Company’s Annual
Information Form under the heading “Risk Factors”.
8
Estimates of mineral resources are also forward -looking statements because they constitute projections,
based on certain estimates and assumptions, regarding the amount of minerals that may be encountered in
the future and/or the anticipated economics of production. The estimation of mineral resources and mineral
reserves is inherently uncertain and involves subjective judgments about many relevant factors. Mineral
resources that are not mineral reserves do not have demonstrated economic viability. The accuracy of any
such estimates is a function of the quantity and quality of available data, and of the assumptions made and
judgments used in engineering and geological interpretation , Forward-looking statements are not a
guarantee of future performance, and actual results and future events could materially differ from those
anticipated in such statements. Although we have attempted to identify important factors that could cause
actual results to differ materially from those contained in the forward -looking statements, there may be
other factors that cause actual results to differ materially from those that are anticipated, estimated, or
intended. There can be no assurance that such statements will prove to be accurate, as actual results and
future events could differ materially from those anticipated in such statements. Accordingly, readers should
not place undue reliance on forward -looking statements. The Company disclaims any intention or
obligation to update or revise any forward -looking statements, whether a s a result of new information,
future events or otherwise, except as required by law.
CAUTIONARY NOTE TO U.S. READERS CONCERNING ESTIMATES OF MINERAL RESERVES
AND MINERAL RESOURCES
Information concerning the properties and operations of K92 has been prepared in accordance with
Canadian standards under applicable Canadian securities laws and may not be comparable to similar
information for United States companies. The terms “Mineral Resource”, “Measured Mineral Resource”,
“Indicated Mineral Resource” and “Inferred Mineral Resource” used in this presentation are Canadian
mining terms as defined in the Definition Standards for Mineral Resources and Mineral Reserves adopted
by the Canadian Institute of Mining, Metallurgy and Petroleum (“ CIM”) on May 10, 2014 and
incorporated by reference in National Instrument 43 -101 – Standards of Disclosure for Mineral Projects
(“NI 43-101”). While the terms “Mineral Resource”, “Measured Mineral Resource”, “Indicated Mineral
Resource” and “Inferred Mineral Resource” are recognized and required by Canadian securities
regulations, they are not defined terms under standards of the United State s Securities and Exchange
Commission (“SEC”). As such, certain information contained in this presentation concerning descriptions
of mineralization and resources under Canadian standards is not comparable to similar information made
public by United States companies subject to the reporting and disclosure requirements of the SEC. An
“Inferred Mineral Resource” has a great amount of uncertainty as to its existence and as to its economic
and legal feasibility. Under Canadian rules, estimates of Inferred Mineral Resources may not form the
basis of feasibility or pre -feasibility studies. It cannot be assumed that all or any part of an “Infer red
Mineral Resource” will ever be upgraded to a higher confidence category through additional exploration
drilling and technical evaluation. Readers are cautioned not to assume that all or any part of an “Inferred
Mineral Resource” exists or is economical ly or legally mineable. Under United States 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 estimation
is made. Readers are cautioned not to assume that all or any part of the Measured or Indicated Mineral
Resources will ever be converted into Mineral Reserves. In addition, the definitions of “Proven Mineral
Reserves” and “Probable Mineral Reserves” under CIM standards differ from the standards of the SEC.
Historical results or feasibility models presented herein are not guarantees or expectations of future
performance.