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EVOLUTION MINING LIMITED Regulatory Filings 2023

Feb 27, 2023

64885_rns_2023-02-27_653357c8-9734-4e9f-bf69-71006d09a4b2.pdf

Regulatory Filings

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BMO Metals & Mining Conference 27 February 2023

Inspired people creating a premier global gold company

FORWARD LOOKING STATEMENT

These materials prepared by Evolution Mining Limited (or "the Company") include forward looking statements. Often, but not always, forward looking statements can generally be identified by the use of forward looking words such as "may", "will", "expect", "intend", "plan", "estimate", "anticipate", "continue", and "guidance", or other similar words and may include, without limitation, statements regarding plans, strategies and objectives of management, anticipated production or construction commencement dates and expected costs or production outputs.

Forward looking statements inherently involve known and unknown risks, uncertainties and other factors that may cause the Company's actual results, performance and achievements to differ materially from any future results, performance or achievements. Relevant factors may include, but are not limited to, changes in commodity prices, foreign exchange fluctuations and general economic conditions, increased costs and demand for production inputs, the speculative nature of exploration and project development, including the risks of obtaining necessary licenses and permits and diminishing quantities or grades of reserves, political and social risks, changes to the regulatory framework within which the Company operates or may in the future operate, environmental conditions including extreme weather conditions, recruitment and retention of personnel, industrial relations issues and litigation.

Forward looking statements are based on the Company and its management's good faith assumptions relating to the financial, market, regulatory and other relevant environments that will exist and affect the Company's business and operations in the future. The Company does not give any assurance that the assumptions on which forward looking statements are based will prove to be correct, or that the Company's business or operations will not be affected in any material manner by these or other factors not foreseen or foreseeable by the Company or management or beyond the Company's control.

Although the Company attempts and has attempted to identify factors that would cause actual actions, events or results to differ materially from those disclosed in forward looking statements, there may be other factors that could cause actual results, performance, achievements or events not to be as anticipated, estimated or intended, and many events are beyond the reasonable control of the Company. Accordingly, readers are cautioned not to place undue reliance on forward looking statements. Forward looking statements in these materials speak only at the date of issue. Subject to any continuing obligations under applicable law or any relevant stock exchange listing rules, in providing this information the Company does not undertake any obligation to publicly update or revise any of the forward looking statements or to advise of any change in events, conditions or circumstances on which any such statement is based.

Non-IFRS Financial Information

The Company results are reported under International Financial Reporting Standards (IFRS). This presentation also includes non-IFRS information including EBITDA and Underlying Profit. The non-IFRS information has not been subject to audit or review by the Company's external auditor and should be used in addition to IFRS information.

This presentation has been approved for release by Evolution's Executive Chair, Jake Klein.

All amounts are expressed in US dollars using an AUD:USD exchange rate assumption of 0.69 unless stated otherwise.

EVOLUTION SNAPSHOT

MARKET CAPITALISATION1 US\$3.7B
MINERAL RESOURCES2 30Moz gold, 1.8Mt copper
ORE RESERVES2 10Moz gold, 660kt copper
FY23 PRODUCTION
GUIDANCE
720koz +/-
5%
FY23 AISC GUIDANCE3 US\$855/oz +/-
5%
DIVIDENDS 20 consecutive dividends
paid -
over A\$1 billion in total

~US\$1,005/oz

1H FY23 OPERATING MINE CASH FLOW

~US\$330M

EQUIVALENT TO

  1. Based on share price of A\$2.89 per share on 17 February 2023 2. See the Appendix for information on Evolution's Mineral Resources and Ore Reserves

FY22 Actual

  1. FY23 AISC is based on gold price of US\$1,656/oz (A\$2,400/oz - royalties) and copper price of US\$8,625/t (A\$12,500/t - By-product credit)

FY22 Estimate FY23 Guidance FY24 Outlook

GOLD PRODUCTION (koz)

800

SUSTAINABILITY

  • Keeping our people healthy and safe
  • TRIF1 improvement of ~13% since start of FY23
  • Safeguard our social licence to operate
  • Committed to our Net Zero target2 and supporting our local communities
  • Clear pathway to meet our emissions reduction commitment of 30% by 2030 through Cowal long term power supply agreement
  • Mt Rawdon Pumped Hydro Project
  • Convert Mt Rawdon open pit into a 1-2GW Pumped Hydro generator
  • Declared a Coordinated Project by the Queensland Government, supporting the state's renewable energy objectives
  • Feasibility Study progressing
      1. Total Recordable Injury Frequency (TRIF): The frequency of total recordable injuries per million hours worked
      1. Net Zero future commitment of 30% emissions reduction by 2030 and net zero emissions by 2050. Emissions targets are related to Scope 1 and Scope 2 only

Mt Rawdon Pumped Hydro Project – more information at https://mtrawdonhydro.com.au

4

CONSISTENT STRATEGY

  1. USD millions. Net mine cash flow net of capex and exploration costs, converted at average FX rate for the period since acquisition

ERNEST HENRY – A WORLD CLASS ASSET

  • Mineral Resource increases as at December 20221
  • 36% increase in contained copper to 1.2Mt year on year
  • 37% increase in contained gold to 2.3Moz year on year
  • Mine Extension Pre-Feasibility Study extended to June quarter 2023 to incorporate a larger mine footprint – potential mine life extension to 2031+
  • Material increase to Ore Reserves anticipated
  • Significant growth opportunities exist beyond currently modelled resource domains:
  • Depth extensions below the Main orebody and between the Main orebody and Ernie Junior
  • New Bert drill hole intercepts adjacent to the pit indicate mineralisation is open with potential for a new ore body to be developed parallel to and stratigraphically beneath the Main ore body
  • Aggressive drill program planned at Bert in 2H CY2023 North-south section looking west of the Ernest Henry orebody1

COWAL

  • Mine life to 2040+ with 4.3Moz contained Gold Ore Reserves and 8.8Moz contained Gold Mineral Resources
  • ~US\$265M new underground mine on schedule and budget
  • Cost inflation has been within contingency levels
  • First stope ore in June quarter FY23
  • Grade of stope tonnes ~2.3g/t Au during ramp-up
  • Stage H ore tonnes and grade increasing as planned
  • Production to increase ~40% over next 2 years
  • FY23: Up ~20% to ~275,000oz
  • FY24: Up ~15% to ~320,000oz (from FY23)

~270 ~435

~210

RED LAKE TRANSFORMATION

12Moz geological endowment in a world-class gold district

New high grade mine at Upper Campbell ramping up in 4Q FY23

New mining fronts and modernised equipment driving production uplift

Processing upgrades with mills processing above historic throughput rates

Grade reconciliation continuing to perform well to geological models

Near mine exploration targets & regional upside

Red Lake Production Ramping Up

200koz

FY24 Outlook (+/-5%)

160koz

FY23 Guidance (+/-5%)

- now

MUNGARI FUTURE GROWTH PROJECT

Current state Future potential Future Growth Project 2Mtpa processing capacity Gold Production 127,500oz (FY23 Guidance +/-5%) AISC \$1,407/oz (FY23 Guidance +/-5%) 4.2Mtpa processing capacity Pathway to 180-220kozpa Material AISC reduction ~30 months build ✓ Simple plant design ✓ Unlocks regional ore sources ✓ Lower processing unit costs ✓ Capex within previous estimates ~\$170M ✓ Aligned with capex guidance Key Upcoming Milestones Cost Optimisation and Preliminary FEED1 Costings confirmed June Qtr 2023 Project decision early Dec Qtr 2023 1. Front End Engineering Design

Feasibility Study defines compelling investment case

DIVIDENDS AND DEBT

FY23 Interim Dividend

▪ Fully franked 2.0 cents per share (~A\$37M)

Major Capital Peaking

  • FY23 Guidance: A\$530 \$600M
  • FY24 Outlook: A\$330 \$380M

Balance Sheet

  • Strong balance sheet able to fund growth
  • Gearing of 31% is within 35% internal limit
  • Investment grade rating reaffirmed as part of annual review in August 2022
  • Low cost of debt at average rate of ~4.2%
  • Fixed interest cost on 60% of total debt (USPP) at 3.6%

459

Cumulative Dividends Declared A\$M (Pre-DRP)

298

FY13 FY14 FY15 FY16 FY17 FY18 FY19 FY20 FY21 FY22 FY23 H1

7 21 43 87 171

Bank Term Loans USPP Bank Term Loans (paid)

KEY TAKEAWAYS

SECTOR LEADING COST AND MARGIN POSITION

OPERATING CASH FLOWS FUNDING GROWTH PROJECTS

ROBUST BALANCE SHEET AND LIQUIDITY

HIGH -QUALITY RESOURCES & RESERVES

Appendix

FY23 GUIDANCE & FY24 OUTLOOK

FY23 Guidance Production
(+/-5%)
AISC \$/oz
(+/-5%)
Sustaining
Capital
Major
Capital
Group 720,000 \$1,240 \$190 -
\$240M
\$530 -
\$600M
Cowal 275,000 \$1,250 \$40 -
\$50M
\$325 -
\$360M
Ernest Henry 82,500 (\$2,600) \$65 -
\$80M
\$35 -
\$45M
Red Lake 160,000 \$1,880 \$50 -
\$60M
\$130 -
\$150M
Mungari 127,500 \$2,040 \$30 -
\$40M
\$40 -
\$45M
Mt Rawdon 75,000 \$1,950 \$5 -
\$7.5M
Corporate \$0 -
\$2.5M
FY24 Outlook Production
(+/-5%)
AISC \$/oz
(+/-5%)
Sustaining
Capital
Major
Capital
Group 800,000 \$1,240 \$190 –
\$240M
\$330 -
\$380M
Cowal 320,000
Ernest Henry 80,000
Red Lake 200,000
Mungari 125,000

GROWTH SINCE INCEPTION

Gold Mineral Resources growth of 336% Gold Ore Reserves growth of 186%

  • Reinforces strategy of identifying and acquiring assets in the right geological address where strong mineral endowment can continue to be unlocked by the Discovery team
  • 12 million resource ounces added predominantly by drilling and optimised engineering
  • Portfolio mine life extended from 5 years to 14 years and maintained
  • Focus on growing high-margin, low-cost ounces by using sector low long-term gold Ore Reserve cutoff price assumption of \$1,600/oz (~US\$1,073)

COST DRIVERS

  • Discipline on cost management & capital allocation
  • Sector leading AISC
  • Capital investment under budget
  • Current cost inflation is within our FY23 Guidance range
  • Benefits of high metal prices being banked and outweigh cost inflation impacts
  • No material change in cost drivers
  • Labour comprises ~46% of cost base
  • Top 7 cost types comprise 87% of total costs
  • Labour costs increased 5 6% this year
  • In line with guidance
  • Bias remains on variable component versus fixed
  • Maintaining cost discipline in inflationary environment

STRATEGIC COPPER EXPOSURE

  1. New Afton and La Ronde do not disclose copper production in guidance.

GROUP GOLD MINERAL RESOURCES AT 31 DECEMBER 2022

Gold Measured Indicated Inferred Total Resource
Project Type Cut-off
(g/t Au)
Tonnes (Mt) Gold
Grade
(g/t)
Gold
M
etal
(k
oz)
Tonnes
(Mt)
Gold
Grade
(g/t)
Gold
Metal
(koz)
Tonnes
(Mt)
Gold
Grade
(g/t)
Gold
Metal
(koz)
Tonnes
(Mt)
Gold
Grade
(g/t)
Gold Metal
(koz)
CP6
Cowal1 Open pit 0.35 29.5 0.46 440 182.9 0.86 5,033 26.5 0.80 682 238.9 0.80 6,155 1
Cowal UG 1.50 - - - 22.0 2.49 1,760 12.4 2.33 925 34.4 2.43 2,685 1
Cowal1 Total 29.5 0.46 440 204.9 1.03 6,793 38.8 1.29 1,607 273.3 1.01 8,840 1
Red Lake3 Total 2.5-3.3 - - - 35.7 6.66 7,639 24.8 5.90 4,702 60.4 6.35 12,342 2
Mungari1,4 Open pit 0.31-0.34 - - - 53.8 1.08 1,864 24.0 1.16 894 77.8 1.10 2,758 3
Mungari1,5 UG 1.46-2.44 1.4 4.66 205 9.7 4.28 1,332 8.7 3.74 1,043 19.7 4.07 2,580 3
Mungari1 Total 1.4 4.66 205 63.5 1.57 3,196 32.7 1.84 1,937 97.5 1.70 5,338 3
Mt Rawdon1 Total 0.23 5.5 0.30 54 21.0 0.58 389 2.3 0.48 35 28.8 0.52 478 4
Ernest Henry2 Total 26.4 0.78 664 44.0 0.74 1,050 24.4 0.74 579 94.8 0.75 2,292 5
Marsden Total 0.20 - - - 119.8 0.27 1,031 3.1 0.22 22 123.0 0.27 1,053 1
Total 62.8 0.68 1,362 488.9 1.28 20,098 126.1 2.19 8,882 677.8 1.39 30,343

Data is reported to significant figures to reflect appropriate precision and may not sum precisely due to rounding. "UG" denotes underground

Mineral Resources are reported inclusive of Ore Reserves

  1. Includes stockpiles

  2. Ernest Henry Operations reported Mineral Resources are reported within an interpreted 0.7% Cu mineralised envelope

  3. Red Lake Mineral Resource cut-off varies from 2.5g/t Au to 3.3g/t Au and is dependent on deposit and location from surface and processing plant

  4. Mungari Open Pit Mineral Resource cut-offs vary from 0.31g/t Au to 0.34g/t Au. The average open pit cut-off is 0.32g/t Au

  5. Mungari Underground Mineral Resource cut-offs vary from 1.46g/t Au to 2.44g/t Au per deposit. The average underground cut-off is 1.96g/t Au

  6. Group Gold Mineral Resources Competent Person (CP) Notes refer to 1. James Biggam; 2. Jason Krauss; 3. Brad Daddow; 4. Matthew Graham-Ellison; 5. Phil Micale

This information is extracted from the release titled 'Annual Mineral Resources and Ore Reserves Statement' dated 16 February 2023 and available to view at www.evolutionmining.com.au. The Company confirms that it is not aware of any new information or data that materially affects the information included in the release and that all material assumptions and parameters underpinning the estimates in the release continue to apply and have not materially changed. The Company confirms that the form and context in which the Competent Persons' findings are presented have not been materially modified from the Reports

GROUP GOLD ORE RESERVES AT 31 DECEMBER 2022

Gold Proved Probable Competent
Project Type Cut-off
(g/t Au)
Tonnes
(Mt)
Gold Grade
(g/t)
Gold Metal
(koz)
Tonnes
(Mt)
Gold Grade
(g/t)
Gold Metal
(koz)
Tonnes
(Mt)
Gold Grade
(g/t)
Gold Metal
(koz)
Person8
Cowal1,2 Open pit 0.45 27.4 0.47 414 86.2 0.99 2,745 113.6 0.87 3,160 1
Cowal3 UG 0.55/1.80 - - - 15.9 2.29 1,169 15.9 2.29 1,169 2
Cowal Total 27.4 0.47 414 102.1 1.19 3,915 129.5 1.04 4,329
Red Lake4 Total 2.5-4.0 - - - 13.0 6.90 2,878 13.0 6.90 2,878 3
Mungari5 UG 2.2-3.8 0.4 5.47 78 3.2 4.41 457 3.7 4.54 535 4
Mungari1,6 Open pit 0.57-0.74 - - - 20.7 1.06 703 20.7 1.06 703 5
Mungari1 Total 0.4 5.47 78 23.9 1.51 1,160 24.3 1.58 1,238
Mt Rawdon1 Open pit 0.31 1.9 0.40 25 9.0 0.66 191 10.9 0.61 216 6
Ernest Henry7 UG 0.75% CuEq 18.2 0.57 336 16.1 0.31 159 34.3 0.45 495 7
Marsden Open pit 0.30 - - - 65.2 0.39 817 65.2 0.39 817 8
Total 47.9 0.55 852 229.2 1.24 9,120 277.1 1.12 9,973

Data is reported to significant figures to reflect appropriate precision and may not sum precisely due to rounding. "UG" denotes underground

  1. Includes stockpiles

  2. Ore Reserve has been updated for E42 Stage H Open Pit in line with 2022 corporate commodity price assumptions, updated modifying factors and allowing for depletion. All remaining 'Open Pit Continuation' Ore Reserves (OPC) are declared as per December 2021 Cowal Open Pit Ore Reserves. The OPC Ore Reserve will be updated at the completion of the OPC Feasibility Study ('FS'). Modifying factors to be updated during the FS include Mineral Resource, geotechnical, metallurgical, revenue and cost assumptions. To date, no fatal flaws have been identified during the FS. A materiality test was conducted on the impact of the change between the December 2021 and December 2022 Mineral Resource model on the OPC Ore Reserve, the change is expected to be less than 10%

3.Cowal Underground Ore Reserve has been optimised using a \$1,600/oz price assumption, economically tested at up to \$2,200/oz and considers updated modifying factors and depletion. The Cowal Underground Ore Reserve includes development material at an incremental cut-off grade of 0.55g/t Au

4.Red Lake Ore Reserve cut-off is 4.0g/t Au except for HG Young (3.0g/t Au) and Upper Campbell (2.5g/t Au)

  1. Mungari Underground Ore Reserve cut-off varies from 2.2g/t Au to 3.8g/t Au and is dependent on specific deposits and varies between each underground mine taking into account location and costs

  2. Mungari Open Pit Ore Reserves were optimised using a \$1,600/oz gold price assumption. The exceptions are the Paradigm and Castle Hill open pit operations which have been scheduled for production between 2023 and 2025 and have been optimised with a \$2,200/oz gold price assumption. Cut-offs vary by deposit from 0.57g/t Au to 0.74g/t Au and take into account location and costs

  3. Ernest Henry Operations reported Ore Reserve estimate is based on the June 2022 Mineral Resource detailed in the 1 August 2022 ASX release titled "Material Increase in Ernest Henry Mineral Resource'. The applied cut-off grade of 0.75% copper equivalent ('CuEq') is determined through an economic evaluation process which considers the Net Smelter Return (NSR) and operating costs. The utilised copper equivalent equation is: CuEq = Cu + Au NSR/72.77 where; Au NSR = 41.71*Au - 0.04

8.Group Gold Ore Reserve Competent Person (CP) Notes refer to 1. Dean Basile (Mining One); 2. Ryan Bettcher; 3. Brad Armstrong; 4. Blake Callinan; 5. Ben Young; 6. Michael Corbett; 7. Anton Kruger

This information is extracted from the release titled 'Annual Mineral Resources and Ore Reserves Statement' dated 16 February 2023 and available to view at www.evolutionmining.com.au. The Company confirms that it is not aware of any new information or data that materially affects the information included in the release and that all material assumptions and parameters underpinning the estimates in the release continue to apply and have not materially changed. The Company confirms that the form and context in which the Competent Persons' findings are presented have not been materially modified from the Reports

GROUP RESOURCES & RESERVES AT 31 DECEMBER 2022

Group Mineral Resource – contained copper

Copper Measured Indicated Inferred Total Resource
Project Type Cut-off Tonnes
(Mt)
Copper
Grade
(%)
Copper
Metal
(kt)
Tonnes
(Mt)
Copper
Grade (%)
Copper
Metal
(kt)
Tonnes
(Mt)
Copper
Grade (%)
Copper
Metal
(kt)
Tonnes
(Mt)
Copper
Grade (%)
Copper
Metal
(kt)
CP1
Marsden Total 0.2g/t Au - - - 119.8 0.46 553 3.1 0.24 7 123.0 0.46 560 1
Ernest Henry Total 0.7% Cu 26.4 1.36 359 44.0 1.28 565 24.4 1.16 283 94.8 1.27 1,207 2
Total 26.4 1.36 359 163.8 0.68 1,117 27.5 1.06 291 217.7 0.81 1,767

Data is reported to significant figures to reflect appropriate precision and may not sum precisely due to rounding Ernest Henry Operations reported Mineral Resources are within an interpreted 0.7% Cu mineralised envelope 1. Group Mineral Resources Competent Person (CP) Notes refer to: 1. James Biggam; 2. Phil Micale

Group Ore Reserve – contained copper

Copper
Proved
Probable Total Reserve
Project Type Cut-Off Tonnes (Mt) Copper
Grade (%)
Copper
Metal (kt)
Tonnes (Mt) Copper
Grade (%)
Copper
Metal (kt)
Tonnes (Mt) Copper Grade
(%)
Copper
Metal (kt)
CP2
Marsden Total 0.3g/t Au - - - 65.2 0.57 371 65.2 0.57 371 1
Ernest Henry1 Total 0.75% CuEq 18.2 1.07 196 16.1 0.59 94 34.3 0.85 290 2
Total 18.2 1.07 196 81.2 0.57 465 99.4 0.66 661

Data is reported to significant figures to reflect appropriate precision and may not sum precisely due to rounding

  1. Ernest Henry Operation Ore Reserve is reported using \$7,000/t Cu and \$1,600/oz Au (AUD) Ore Reserve price assumptions. Ernest Henry Operations reported Ore Reserve estimate is based on the June 2022 Mineral Resource detailed in the 1 August 2022 ASX release titled "Material Increase in Ernest Henry Mineral Resource". The cut-off grade applied of 0.75% copper equivalent ('CuEq') is determined through an economic evaluation process which considers the Net Smelter Return (NSR) and operating costs. The utilised copper equivalent equation is: CuEq = Cu + Au NSR/72.77 where; Au NSR = 41.71*Au - 0.04 2. Group Ore Reserve Competent Person (CP) Notes refer to: 1. Anton Kruger; 2. Michael Corbett

This information is extracted from the release titled 'Annual Mineral Resources and Ore Reserves Statement' dated 16 February 2023 and available to view at www.evolutionmining.com.au. The Company confirms that it is not aware of any new information or data that materially affects the information included in the release and that all material assumptions and parameters underpinning the estimates in the release continue to apply and have not materially changed. The Company confirms that the form and context in which the Competent Persons' findings are presented have not been materially modified from the Reports

Ernest Henry Drill Hole Information

Hole ID Hole type Northing MGA
(m)
Easting MGA
(m)
Elevation AHD
(m)
Hole Length
(m)
Dip MGA Azi MGA From (m) To (m) Interval1
(m)
ETW (m) Au (g/t) Cu (%)
EH1286 Diamond 7,739,197 469,928 -322.35 491.4 16.4 311.0 350.0 360.0 10.0 7.0 1.91 1.05
EH1286 Diamond 7,739,197 469,928 -322.35 491.4 16.4 311.0 376.0 440.0 64.0 40.0 0.76 1.39
EH1292 Diamond 7,739,197 469,928 -322.66 433.2 11.0 311.4 297.1 307.2 10.1 6.0 2.22 0.55
EH1292 Diamond 7,739,197 469,928 -322.66 433.2 11.0 311.4 315.1 337.0 21.9 13.0 3.87 0.83
EH1292 Diamond 7,739,197 469,928 -322.66 433.2 11.0 311.4 354.0 404.0 50.0 32.0 0.68 1.12

Ernest Henry Competent Person's Statement

The information in this presentation that relates to the Ernest Henry exploration results is based on work compiled by Mr Phillip Micale who is employed on a full-time basis by Evolution Mining Limited and is a Member of either the Australasian Institute of Mining and Metallurgy (AusIMM). Mr Micale has sufficient experience which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he has undertaken to qualify as a Competent Person as defined in the JORC Code 2012. Mr Micale consents to the inclusion in this presentation of the matters based on his information in the form and context in which it appears.

JORC Code Table 1 – Ernest Henry

The following information is provided in accordance with Table 1 of Appendix 5A of the JORC Code 2012 - Section 1 (Sampling Techniques and Data), Section 2 (Reporting of Exploration Results)

Section 1 Sampling Techniques and Data (Criteria in this section apply to all succeeding sections)

Criteria JORC Code explanation Commentary
Sampling techniques Nature and quality of sampling (eg
cut channels, random chips, or specific
specialised
industry standard measurement tools appropriate to the minerals
under investigation, such as down hole gamma sondes, or handheld XRF
instruments, etc). These examples should not be taken as limiting the broad
meaning of sampling.
Include reference to measures taken to ensure sample representivity
and the
appropriate calibration of any measurement tools or systems used.
Aspects of the determination of mineralisation
that are Material to the Public
Report.
In cases where 'industry standard' work has been done this would be relatively
simple (eg
'reverse circulation drilling was used to obtain 1 m samples from
which 3 kg was pulverised
to produce a 30 g charge for fire assay'). In other
cases more explanation may be required, such as where there is coarse gold
that has inherent sampling problems. Unusual commodities or mineralisation
types (eg
submarine nodules) may warrant disclosure of detailed information




Diamond core drill holes are the primary source of geological and grade information for the resource at Ernest Henry Mine.
Drilling has been completed between 1980 and 2022.A total of 1,169 holes were extracted from the acQuire
database and 836
drill holes containing Cu assays and 835 holes containing Au assays were used in the Mineral Resource estimate.
Reverse circulation (RC) drilling was completed to base of oxidation with some holes hosting diamond tails.
The diamond core is routinely sampled to geological contacts and predominantly 2m intervals from ½ core over the entire length
of the drill hole, producing approximately 5kg samples. Holes drilled from the surface and underground are oriented
perpendicular to orebody mineralisation where possible.
UG channel samples taken from chip sampling of development drives at 2m intervals are also used to help define mineralogical
domains. Whilst they are not used directly in estimation, chip samples typically yield 4kg –
5kg masses.
Samples undergo further preparation and analysis by ALS laboratories (Townsville and Brisbane), involving crushing to 2mm,
riffle splitting and pulverising
to 85% passing 75 microns. Of this material a 0.4g sample is prepared for analysis via aqua regia
digestion and 50g for analysis via fire assay.
Drilling techniques Drill type (eg
core, reverse circulation, open-hole hammer, rotary air blast,
auger, Bangka, sonic, etc) and details (eg
core diameter, triple or standard
tube, depth of diamond tails, face-sampling bit or other type, whether core is
oriented and if so, by what method, etc).

Drill types utilised
in grade estimation are diamond core including HQ, NQ2 & NQ sizes yielding core diameters of 63.5mm,
50.6mm & 47.6mm respectively. Drill core is collected with a 3m barrel and standard tubing.
Only selected drill holes have been oriented using an ezi
mark orientation system for structural and geotechnical requirements.
Drill sample recovery Method of recording and assessing core and chip sample recoveries and results
assessed.
Measures taken to maximise
sample recovery and ensure representative nature
of the samples.
Whether a relationship exists between sample recovery and grade and whether
sample bias may have occurred due to preferential loss/gain of fine/coarse
material.


Current practice ensures all diamond core intervals are measured and recorded for rock quality designation (RQD) and core loss.
Core recovery through the ore portion of the deposit is high (>99.5%).
No bias is observed due to core loss.
Logging Whether core and chip samples have been geologically and geotechnically
logged to a level of detail to support appropriate Mineral Resource estimation,
mining studies and metallurgical studies.
Whether logging is qualitative or quantitative in nature. Core (or costean,
channel, etc) photography.
The total length and percentage of the relevant intersections logged.
All diamond core has been logged, geologically and geotechnically. The geologic and geotechnical records are considered
qualitative and quantitative with the following items being captured: Lithology, Texture, Alteration, Mineralisation, Structures

including veining & faults, Weathering, RQD, Photography of diamond core has captured approximately 60% of the data set.

JORC Code Table 1 – Ernest Henry

Section 1 Sampling Techniques and Data
Criteria JORC Code explanation Commentary
Sub-sampling
techniques and
sample preparation
Quality of assay data
and laboratory tests
If
core,
whether
cut
or
sawn
and
whether
quarter,
half
or
all
core
taken.
If
non-core,
whether
riffled,
tube
sampled,
rotary
split,
etc
and
whether
sampled
wet
or
dry.
For
all
sample
types,
the
nature,
quality
and
appropriateness
of
the
sample
preparation
technique.
Quality
control
procedures
adopted
for
all
sub-sampling
stages
to
maximise
representivity
of
samples.
Measures
taken
to
ensure
that
the
sampling
is
representative
of
the
in
situ
material
collected,
including
for
instance
results
for
field
duplicate/second-half
sampling.
Whether
sample
sizes
are
appropriate
to
the
grain
size
of
the
material
being
sampled
The
nature,
quality
and
appropriateness
of
the
assaying
and
laboratory
procedures
used
and
whether
the
technique
is
considered
partial
or
total.
For
geophysical
tools,
spectrometers,
handheld
XRF
instruments,
etc,
the
parameters
used
in
determining
the
analysis
including
instrument
make
and

Drill
core
is
cut
in
half
to
produce
an
approximate
5kg
sample
using
an
automatic
core
saw,
with
one
half
submitted
for
assay,
and
the
other
half
retained
on
site.
Where
core
is
oriented,
it
is
cut
on
the
core
orientation
line.

Diamond
core
and
channel
samples
are
predominantly
sampled
at
2m
intervals.
Samples
are
sent
to
ALS
Townsville
for
crushing
and
pulverisation.
Samples
are
crushed
to
2mm,
split
via
a
riffle
or
rotary
splitter
and
then
pulverised
using
an
LM5
mill
to
a
nominal
85%
passing
75
microns.
A
0.4g
sub-sample
of
pulverised
material
is
taken
for
ICP
analysis
via
aqua
regia
digestion
and
a
50g
sub
sample
is
taken
for
analysis
via
fire
assay.
The
remaining
pulverised
sample
is
returned
to
site
and
stored
for
future
reference.

Samples
submitted
to
OSLS
are
crushed
to
90%
passing
2
mm,
rotary
split
to
3.5kg
(if
required)
and
pulverised
using
an
LM5
mill
to
90%
passing
75
microns.
A
0.5g
sub-sample
is
taken
for
base
metal
analysis
via
aqua
regia
digestion
and
determined
by
ICP.
A
25g
sub-sample
is
taken
for
analysis
via
fire
assay.

Sub-sampling
is
performed
during
the
sample
preparation
stage
in
line
with
ALS
internal
protocol.

Field
duplicates
are
collected
for
all
diamond
core
at
a
rate
of
one
in
every
15
samples
and
for
channel
sample
at
a
rate
of
one
in
every
10
samples.

Comparison
of
field
duplicates
is
performed
routinely
to
ensure
a
representative
sample
is
being
obtained
and
that
the
sample
size
captures
an
adequate
sample
volume
to
represent
the
grain
size
and
inherent
mineralogical
variability
within
the
sampled
material.

Samples
are
assayed
at
ALS
Brisbane
for
a
multi
element
suite
using
ME-ICP41,
Cu-OG46
&
MEOG46
methods,
which
analyses
a
0.4g
sample
in
aqua-regia
digestion
with
an
ICP-AES
finish.
Gold
analysis
is
completed
at
ALS
Townsville
by
fire
assay
on
a
50g
sample
with
an
AA
instrument
finish.
Analytical
methods
are
deemed
appropriate
for
this
style
of
mineralisation.

Historic
quality
control
procedures
include
the
use
of
six
certified
standards
(CRMs)
as
well
as
field
duplicates
inserted
at
1:25
ratio
for
all
sample
batches
sent
to
the
ALS
laboratory.

The
quality
assurance
program
includes
repeat
and
check
assays
from
an
independent
third-party
laboratory
as
deemed
necessary.

There
have
been
no
blanks
used
on
the
diamond
core
historic
data
set.
The
ALS
laboratory
provides
their
own
quality
control
data,
model,
reading
times,
calibrations
factors
applied
and
their
derivation,
etc.
Nature
of
quality
control
procedures
adopted
(eg
standards,
blanks,
duplicates,
external
laboratory
checks)
and
whether
acceptable
levels
of
accuracy
(ie
lack
of
bias)
and
precision
have
been
established.
which
includes
laboratory
standards
and
duplicates.

EHO
currently
uses
five
CRMs,
pulverised
and
coarse
blanks,
field,
crush
and
pulp
duplicates
to
monitor
sample
preparation
and
analytical
processes.
The
rate
or
insertion
was
1:15
for
CRMs,
1:15
for
blanks
within
mineralised
units
and
1:30
in
waste
zones,
Field
duplicates
were
inserted
at
1:15
while
crush
and
pulp
duplicates
were
at
1:25
samples.

Analysis
of
quality
control
sample
assays
indicate
the
accuracy
and
precision
is
within
acceptable
limits
and
suitable
for
inclusion
in
the
underground
resource
estimate.
Verification of
sampling and
assaying
The
verification
of
significant
intersections
by
either
independent
or
alternative
company
personnel.
The
use
of
twinned
holes.
Documentation
of
primary
data,
data
entry
procedures,
data
verification,
data
storage
(physical
and
electronic)
protocols.
Discuss
any
adjustment
to
assay
data.

All
diamond
drill
holes
are
logged
remotely
on
a
laptop
utilising
AcQuire
software
and
stored
digitally
in
an
AcQuire
database
on
a
network
server.

Drill
holes
are
visually
logged
for
copper
content
prior
to
sampling
and
assay.
This
visual
assessment
is
used
to
verify
assay
data.

The
strong
correlation
between
copper
and
gold
enables
additional
quality
control
checks
to
be
enacted
on
returned
assays.

Procedures
have
been
developed
to
ensure
a
repeatable
process
is
in
place
for
transferring,
maintaining
&
storing
all
drilling,
logging
and
sampling
data
on
the
network
server,
which
has
a
live
upload
to
a
local
device
and
daily
back
up
to
an
offsite
device.

Following
review
of
the
historical
dataset
for
the
underground
Resource,
no
adjustments
have
been
made
to
any
assay
data.
All
files
are
reported
digitally
from
ALS
laboratories
in
CSV
format,
which
is
then
imported
directly
into
the
Acquire
database.
Checks
of
the
assay
results
in
AcQuire
and
results
returned
from
the
laboratory
are
performed
at
the
completion
of
each
drilling
&
sampling
campaign.
Laboratory
certificates
for
returned
assays
are
stored
for
future
reference
and
checks
against
values
contained
within
the
AcQuire
database.

Section 1 Sampling Techniques and Data
Criteria JORC Code explanation Commentary
Location of data
points
Accuracy
and
quality
of
surveys
used
to
locate
drill
holes
(collar
and
down-hole
surveys),
trenches,
mine
workings
and
other
locations
used
in
Mineral
Resource
estimation.
Specification
of
the
grid
system
used.
Quality and adequacy of topographic control.

Collar
coordinates
are
picked
up
by
EHO
site
surveyors
using
a
Leica
total
station
survey
instrument.
All
underground
excavations
are
monitored
using
the
same
instrument.

The
topography
was
generated
from
a
LIDAR
survey
completed
over
EHM
mining
leases
in
2018
with
outputs
in
GDA94
coordinate
system.

A
variety
of
downhole
survey
methods
have
been
utilised
in
the
underground
resource,
however
93%
of
the
diamond
drill
holes
have
been
surveyed
using
a
gyroscopic
instrument
recording
down
hole
survey
data
in
3m
intervals.
Data spacing and
distribution
Whether
the
data
spacing
and
distribution
is
sufficient
to
establish
the
degree
of
geological
and
grade
continuity
appropriate
for
the
Mineral
Resource
and
Ore
Reserve
estimation
procedure(s)
and
classifications
applied.

All
data
points
are
reported
in
MGA94
zone
54.

Drill
holes
are
variably
spaced
with
the
following
broad
resource
classifications
applied:

Between
30m
x
30m
and
40m
x
40m
for
Measured

60m
x
60m
for
Indicated

100m
x
100m
Inferred.

This
drill
hole
spacing
is
considered
sufficient
given
the
deposit
grade
and
geological
continuity
and
Mineral
Resource
classification
definitions
as
outlined
in
the
2012
JORC
Code,
which
is
also
supported
by
historic
reconciliation
data
from
the
mill.

Samples
are
weighted
by
length
and
density
when
composited
to
2m
in
length
for
use
in
the
estimation.
Orientation of data in
relation to geological
structure
Whether
the
orientation
of
sampling
achieves
unbiased
sampling
of
possible
structures
and
the
extent
to
which
this
is
known,
considering
the
deposit
type.If
the
relationship
between
the
drilling
orientation
and
the
orientation
of
key
mineralised
structures
is
considered
to
have
introduced
a
sampling
bias,
this
should
be
assessed
and
reported
if
material.

Holes
drilled
from
the
surface
and
underground
are
oriented
perpendicular
to
orebody
mineralisation
and
orebody
bounding
shear
zones
wherever
possible.
UG
channel
samples
are
oriented
along
the
strike
of
orebody
mineralisation
and
are
conducted
on
a
lateral
25m
spacing,
in
line
with
sub-level
mine
excavations.

There
has
been
no
orientation
bias
recognised
within
the
data
used
for
the
underground
Resource
estimate.
Sample security The
measures
taken
to
ensure
sample
security

Diamond
core
samples
are
securely
stored
onsite
prior
to
being
despatched
to
the
ALS
laboratory
in
Townsville.
Audits or reviews The
results
of
any
audits
or
reviews
of
sampling
techniques
and
data.

An
external
audit
conducted
in
2014
on
the
data
management
&
QAQC
procedures
including
drilling
&
sampling.
These
were
found
to
be
in
line
with
industry
standards.
CSA
Global
completed
a
fatal
flaw
analysis
of
the
Ernest
Henry
Mineral
Resource
estimate
in
July
2021
and
only
minor
issues
were
identified.

Section 2 Reporting of Exploration Results (Criteria in the preceding section apply to this section)

Criteria JORC Code explanation Commentary
Mineral tenement and
land tenure status
Type,
reference
name/number,
location
and
ownership
including
agreements
or
material
issues
with
third
parties
such
as
joint
ventures,
partnerships,
overriding
royalties,
native
title
interests,
historical
sites,
wilderness
or
national
park
and
environmental
settings.
The
EHO
is
located
Queensland,
Ltd,
the
details
of
Jan
2022.
38km
north-east
of
Cloncurry,
150km
east
of
Mount
Isa
and
750km
west
Australia.
The
EHM
operations
extend
across
8
current
mining
leases
all
owned
these
leases
are
summarized
in
the
following
table.
Evolution
acquired
00%
The
security
of
the
tenure
held
at
the
time
of
reporting
along
with
any
known
impediments
to
obtaining
a
licence
to
operate
in
the
area.
Lease Ownership Expiry
ML2671 Ernest Henry Mining Pty Ltd 100% 30/11/25
ML90041 Ernest Henry Mining Pty Ltd 100% 30/11/2037
ML90072 Ernest Henry Mining Pty Ltd 100% 30/11/2025
ML90085 Ernest Henry Mining Pty Ltd 100% 31/03/26
ML90100 Ernest Henry Mining Pty Ltd 100% 31/5/2026
ML90107 Ernest Henry Mining Pty Ltd 100% 31/08/2026

Exploration done by other parties

Acknowledgment and appraisal of exploration by other parties • The EHM orebody was discovered by Western Mining Corporation Limited in 1991. The size and potential of the discovery became obvious with further drill definition following soon after, leading to a Feasibility Study and subsequently the open pit mine and mill. In 2006 a deep drilling campaign was initiated to explore the down dip extension of the deposit ultimately leading to the development of the current underground mining project.

ML90116 Ernest Henry Mining Pty Ltd 100% 30/09/2026 ML90075 Ernest Henry Mining Pty Ltd 100% 30/11/2025

• Data used in the current estimate is a compilation of several phases of exploration completed since the early 1990s. This data has been assessed for quality as outlined in 'Section 1' and deemed suitable for use as the basis of the Mineral Resource estimate.

Section 2 Reporting of Exploration Results
Criteria JORC Code explanation Commentary
Geology Deposit
type,
geological
setting
and
style
of
mineralisation.
The
Ernest
Henry
Deposit
is
an
Iron
Oxide
Copper
Gold
(IOCG)
hosted
within
a
sequence
of
moderately
SSE-dipping,
intensely
altered
Paleoproterozoic
intermediate
metavolcanic
and
metasedimentary
rocks
of
the
Mt
Isa
group.
Copper
occurs
as
chalcopyrite
within
the
magnetite-biotite-calcite-pyrite
matrix
of
a
250
x
300
m
pipe
like
breccia
body.
The
breccia
pipe
dips
approximately
40
degrees
to
the
South
and
is
bounded
on
both
the
footwall
and
hanging
wall
by
shear
zones.
The
main
orebody
starts
to
split
from
the
1575
level
into
a
South-East
lens,
and
from
the
1275
level
into
the
South-West
lens.
Both
lenses
are
separated
from
the
main
orebody
by
waste
zones,
termed
the
Inter-lens
and
South-West
Shear
Zone,
respectively.
The
orebody
is
open
at
depth.
Drill hole Information A
summary
of
all
information
material
to
the
understanding
of
the
exploration
results
including
a
tabulation
of
the
following
information
for
all
Material
drill
holes:
A
summary
of
drill
hole
information
is
provided
in
the
preceding
slide
to
the
Table
1
information
easting
and
northing
of
the
drill
hole
collar,
elevation
or
RL
(Reduced
Level

elevation
above
sea
level
in
metres)
of
the
drill
hole
collar,
dip
and
azimuth
of
the
hole,
down
hole
length
and
interception
depth,
hole
length.
Diamond:
Calculation
for
exploration
results:
Cut
off
grade
of
0.7%
Cu
with
a
minimum
mineralisation
composite
length
of
4m.
The
maximum
consecutive
waste
(below
0.7
g/t)
cannot
exceed
4m
however
there
is
no
limit
to
included
waste.
No
upper
cuts
are
applied.
Significant
intercepts
are
over
1.2%
Cu
length
weighted
average.
Data aggregation If
the
exclusion
of
this
information
is
justified
on
the
basis
that
the
information
is
not
Material
and
this
exclusion
does
not
detract
from
the
understanding
of
the
report,
the
Competent
Person
should
clearly
explain
why
this
is
the
case.
In
reporting
Exploration
Results,
weighting
averaging
techniques,
maximum
All
significant
new
drill
hole
assay
data
of
a
material
nature
are
reported
in
this
release.
No
cut-off
has
been
applied
to
any
methods and/or
minimum
grade
truncations
(e.g.
cutting
of
high
grades)
and
cut-off
grades
are
usually
material
and
should
be
stated.
sampling.
All
intervals
have
been
length
weighted.
Where
aggregate
intercepts
incorporate
short
lengths
of
high-grade
results
and
longer
lengths
of
low-grade
results,
the
procedure
used
for
such
aggregation
should
be
stated
and
some
typical
examples
of
such
aggregations
should
be
All
significant
new
drill
hole
assay
data
are
reported
in
this
release.
No
cut-off
has
been
applied
to
any
sampling.
shown
in
detail.
The
assumptions
used
for
any
reporting
of
metal
equivalent
values
should
be
clearly
stated.
No
metal
equivalent
values
are
used
Diagrams Appropriate
maps
and
sections
(with
scales)
and
tabulations
of
intercepts
should
be
included
for
any
significant
discovery
being
reported.
These
should
include,
but
not
be
limited
to
a
plan
view
of
drill
hole.
Drill
hole
location
diagrams
and
representative
sections
of
reported
exploration
results
are
provided
either
below
or
in
the
body
of
this
report.
32,970mN
(±50m)
showing
Bert
drillholes
EH1286
and
EH1292

JORC Code Table 1 – Ernest Henry

Section 2 Reporting of Exploration Results

Diagram showing North-south section looking west of the Ernest Henry orebody and East-west section looking north showing the location of the mineralisation at the Bert lens.

Section 2 Reporting of Exploration Results
Criteria JORC Code explanation Commentary
Balanced reporting • Where
comprehensive
reporting
of
all
Exploration
Results
is
not
practicable,
representative
reporting
of
both
low
and
high
grades
and/or
widths
should
be
Intersection
lengths
and
grades
are
reported
as
down-hole,
length
weighted
averages
practiced
to
avoid
misleading
reporting
of
Exploration
Results.
Numbers
of
drill
holes
and
metres
are
included
in
the
body
of
the
announcement.
Other substantive
exploration data
Other
exploration
data,
if
meaningful
and
material,
should
be
reported
including

(but
not
limited
to):
geological
observations;
geophysical
survey
results;
geochemical
survey
results;
bulk
samples

size
and
method
of
treatment;
metallurgical
test
results;
bulk
density,
groundwater,
geotechnical
and
rock
characteristics;
potential
deleterious
or
contaminating
substances.
Visual
estimates
of
Cu
mineralisation
are
derived
from
logging
geologists'
estimates
of
the
quantity
of
chalcopyrite
in
the
core.
Chalcopyrite
is
the
only
copper
bearing
mineral
in
fresh
material
at
Ernest
Henry.
Consequently,
visual
estimates
of
Cu
grades
are
derived
by
dividing
the
estimated
percentage
of
chalcopyrite
by
three.
Further work • The
nature
and
scale
of
planned
further
work
(e.g.
tests
for
lateral
extensions
or
depth
extensions
or
largescale
step-out
drilling).
Further
Exploration
work
at
Ernest
Henry
includes
follow-up
drilling.
Diagrams
clearly
highlighting
the
areas
of
possible
extensions,
including
the

main
geological
interpretations
and
future
drilling
areas,
provided
this
information
is
not
commercially
sensitive.