MAIDEN OPEN PIT ORE RESERVE ESTIMATE FOR CONSTELLATION PROJE
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1
MAIDEN OPEN PIT ORE RESERVE ESTIMATE FOR
CONSTELLATION PROJECT
Aeris Resources Limited (ASX: AIS) (“Aeris” or “the Company”) is pleased to announce a
Maiden Open Pit Ore Reserve Estimate for its Constellation Project, located in the Cobar
Basin Region of New South Wales, approximately 45 kilometres north-east of the Tritton
Processing Plant.
This Maiden Ore Reserve Estimate (ORE) has been derived from the recently reported
Constellation Mineral Resource Estimate (MRE)1 and is based on the technical and economic
analyses completed as part of Pre-Feasibility Studies (PFS) for the initial open pit mining
options. The estimate reports only mineralisation classified as Indicated Resource in
accordance with the JORC Code (2012 Edition).
Maiden Open Pit Ore Reserve Estimate:
o Probable Ore Reserve: 2.3 Mt @ 2.0% Cu, 0.6 g/t Au, 3 g/t Ag
containing 47 kt Cu, 49 koz Au, and 228 koz Ag
Ore Reserve supports a 5-to-7-year open pit mine life, with potential for future
optimisation and expansion into an underground operation targeting the remaining
Mineral Resource at depth.
The pit design underpinning the Ore Reserve includes 0.6Mt of Inferred Resource @
3.2% Cu, 0.5 g/t Au, 3 g/t Ag containing an estimated 20 kt Cu, 10 koz Au, and 62 koz
Ag. This material is not included in the Ore Reserve. It is planned to be drilled prior to
mining with the objective to upgrade this material into Indicated status.
Further studies underway to assess the deeper portions of the Constellation
mineralisation for potential underground mining opportunities.
1
Refer to ASX Announcement “Material Increase in Copper and Gold at Constellation” dated 31st
March
2025,
28 October 2025 ASX/ MEDIA RELEASE
2
Project Overview
The Constellation orebody is located within 45 kilometres of the Tritton processing plant and is
100% owned by Aeris Resources.
The project’s previously reported Mineral Resource Estimate (MRE)2 stands at:
7.6 Mt @ 2.0% Cu, 0.7 g/t Au, and 2.5 g/t Ag.
The oxide and primary ore included in this Ore Reserve is planned to be processed through
the Tritton processing plant, leveraging existing infrastructure to reduce capital intensity and
improve project economics.
Maiden Constellation Ore Reserve Estimate – October 2025
Tonnes Grade Contained Metal
Source Category (Mt) %
Cu
g/t
Au
g/t
Ag
kt
Cu
koz
Au
koz
Ag
Oxide Ore Probable 0.4 1.2 0.4 1.8 5 5 24
Supergene/Primary Ore Probable 1.9 2.2 0.7 3.3 42 44 204
Open Cut Total Probable 2.3 2.0 0.6 3.0 47 49 228
Note: Ore Reserves are reported in accordance with the JORC Code (2012 Edition). Rounding may cause minor
computational discrepancies. The above reported Constellation Ore Reserve Estimate has been prepared as a
subset of the Constellation Mineral Resource Estimate. The Ore Reserve is not additional to the Mineral Resource.
Competent Person’s Statement
The information in this report relating to Ore Reserves is based on work supervised and
information compiled by Cam Schubert who is a Fellow of the AusIMM (Member #111663)
and a Competent Person as defined by the JORC Code 2012. Cam Schubert is a full time
employee of Aeris Resources and has sufficient experience relevant to the style of
mineralisation and type of deposit under consideration and to the activity being undertaken
to qualify as a Competent Person under the JORC Code.
Cam Schubert consents to the inclusion in the report of the matters based on their
information in the form and context in which it appears.
Cam Schubert is entitled to participate in Aeris's executive equity long-term incentive plan,
details of which are included in Aeris's annual Remuneration Report. Annual replacement of
depleted Mineral Resources and Ore Reserves is one of the performance measures of Aeris’s
long-term incentive plans.
2
Refer to ASX Announcement “Material Increase in Copper and Gold at Constellation” dated 31st
March
2025,
3
Introduction
The Constellation Project is located within the Bogan Shire of central New South Wales,
approximately 20 kilometres north-east of the township of Girilambone, 45 kilometres north-
east of the existing Tritton Copper Operations and 55 kilometres north-west of Nyngan. The
Project area is situated on predominantly cleared agricultural land with limited remnant
native vegetation and minimal surface disturbance, estimated at approximately 300
hectares. The site lies within the Macquarie–Bogan River Catchment.
Aeris Resources Limited operates the Tritton Copper Operations with ore sourced from
surrounding deposits on Aeris tenements and transported to Tritton for processing. The
Constellation Project represents a proposed new ore source within this operating framework,
extending the life of the existing Tritton infrastructure.
The Project proposes the development of an open pit and potential subsequent
underground mine to extract copper ore. Ore from Constellation will be hauled to the Tritton
processing facility via existing road networks where practicable. Lower-grade ore will be
stockpiled onsite for future treatment options.
Progressive rehabilitation will be undertaken throughout the life of the Project, with final
landforms designed to be safe, stable, and suitable for post-mining agricultural use. Given
the modest disturbance footprint, the Project is expected to have a limited surface impact
while contributing significantly to the sustainability and longevity of the Tritton Copper
Operations.
4
Figure 1. Constellation Project Locality.
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Study Status
The Constellation ORE has been derived from a comprehensive mining technical study
completed to Pre-Feasibility Study level for an initial open pit operation. The study builds upon
previous studies and incorporates updated geological, resource, geotechnical,
metallurgical, and economic inputs.
The current work included detailed pit optimisation, strategic scheduling, pit stage designs
and trade-off analysis to assess potential open pit and underground transition options. This
was followed by the design of the preferred open pit stages, waste rock storage facility, and
rehabilitation concept, together with a fully integrated Life-of-Mine (LOM) schedule.
Ore mined from the Constellation open pit will be processed through the existing Tritton
Copper Operations, leveraging established processing, logistics, and product handling
infrastructure. As such, downstream processing, transport, and marketing aspects of the
Project are supported by a high level of confidence, exceeding typical PFS standards.
The PFS demonstrates that the proposed mine plan is technically achievable and
economically viable, and all material Modifying Factors have been appropriately
considered in the estimation and classification of the Ore Reserve.
Geology and Mineral Resource Estimate
Local Geology
The Constellation deposit is hosted within the early to mid-Ordovician meta-sedimentary
sequence of the Girilambone Group, comprising highly deformed and strongly foliated
sandstones (psammites), quartzite, pelites, phyllite, chert, and graphitic shales, with lesser
mafic units. Regional metamorphism is of lower- to middle-greenschist facies, characterised
by abundant quartz, muscovite, chlorite, and minor epidote.
Altered Alpine- and Alaskan-type ultramafic bodies occur to the east of the region, while
north–northwest-trending, post-orogenic monzodiorite intrusions crosscut the older
metasedimentary sequences. The area has undergone a complex deformation history,
resulting in the development of multiple shear zones, faults, and folding events, with two
prominent foliations evident across the deposit.
The Constellation deposit shares strong geological similarities with other copper deposits
within the Tritton Copper Operations tenure, including the Tritton (+20 Mt) and Murrawombie
(+15 Mt) deposits. These mineralised systems are typically constrained by structural and
lithological elements and form pipe-like bodies. Deposits in the area, including Constellation,
appear to correlate with zones of structural complexity, with evidence that mineralisation
occurred late in the structural history. Folding and faulting in these structural domains have
allowed for dilation and transport of enriched fluids to precipitate copper +/- gold +/- silver
mineralisation within modified lithologic and structurally controlled positions.
Mineralisation Style
Mineralisation at Constellation comprises massive, banded to disseminated sulphides,
dominated by pyrite, chalcopyrite, and minor pyrrhotite in the primary zones. Distinct oxide
and supergene mineralised horizons are also well developed:
6
In the oxide domain, copper occurs primarily as malachite and azurite, with minor
chrysocolla and native copper.
The underlying supergene zone is dominated by chalcocite, with variable amounts of
pyrite and minor chalcopyrite, plus subordinate malachite/azurite.
The highest copper grades are typically associated with quartz-rich breccia zones infilled by
chalcopyrite and within chalcocite-dominant supergene domains.
Deposit Geometry and Continuity
The Constellation mineralised system plunges moderately (~30°) to the south-east and
comprises two structural zones:
A main zone dipping moderately to the east, and
A steeper “stand-up” zone to the north, dipping to the south.
The change in orientation is interpreted to be shear- and fold-related. The mineralised system
has been delineated over a 1,100-metre down-plunge extent and up to 300 metres along
strike, remaining open down-plunge.
Downhole electromagnetic (DHEM) surveys have identified two large conductive bodies
extending below the base of existing drilling, providing strong encouragement that the
mineralised system remains open down-plunge and along both the northern and southern
boundaries.
7
Figure 2 – Long section looking west showing the modelled copper mineralised domains and
drill hole intercepts (Cu assays).
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Drilling, Sampling and Data Quality
Exploration and resource definition drilling at the Constellation Project has been completed
using a combination of Reverse Circulation (RC), Diamond Drilling (DD), and RC pre-collars
with diamond tails (RCD). Only assays derived from these drilling methods were used in the
data informing the Constellation Mineral Resource Estimate3.
In total, 264 drillholes comprising 110 RC holes and 154 diamond holes, for an aggregate
52,012 metres of drilling, were used in the resource dataset. Of this, 42,795 metres (82%) were
diamond core. Drilling was carried out by DRC Drilling and Durock Drilling under contract to
Aeris Resources Limited.
Near-surface drilling (to approximately 200 metres depth) was predominantly completed by
RC on nominal 25–30 m × 25–30 m spacing, while deeper drilling was completed by diamond
core on 40–80 m × 80–100 m spacing. The combination of drilling techniques and spacing
provides adequate definition of mineralisation geometry and grade continuity to support
Indicated and Inferred Mineral Resource classification.
Sampling and Sample Preparation
Diamond drill core was generally sampled on 1 metre intervals, although sample boundaries
were adjusted to align with geological contacts, sulphide textures, and visible copper
mineralisation. Sample lengths ranged from 0.2 m to 1.4 m. All core was cut along the axis,
with one half submitted for assay and the other retained for reference.
Samples weighing more than 3 kg were crushed using a Boyd crusher (90% passing 2 mm),
rotary split to a 2–3 kg sub-sample, and pulverised in an LM5 mill to achieve 80% passing 75
µm. Samples under 3 kg were crushed in a jaw crusher (70% passing 6 mm) and the entire
sample pulverised in an LM5 mill. A 300 g sub-sample was taken from the pulverised material
for analysis.
RC samples were collected at 1 m intervals from the cyclone splitter. Sample recoveries for
the RC program averaged greater than 90%, as visually estimated at the drill rig. Based on
observed geology, 1 m samples were collected within and proximal to mineralised zones,
while background intervals were composited to 4 m.
A comprehensive QA/QC program was implemented, incorporating certified reference
materials, blanks, and field duplicates. Reference standards and blanks were inserted at a
rate of 1 in 20 samples. Duplicate samples were collected from RC drilling at regular intervals
to assess assay repeatability. The QA/QC results confirm that the sampling and analytical
processes provide a high level of confidence in data accuracy and precision.
Assaying and Analytical Methods
All samples were dispatched to a certified commercial laboratory for multi-element analysis.
A variety of analytical methods have been used that are summarised in the ASX
announcement “Material Increase in Copper and Gold at Constellation” dated 31st March
2025.
3
Refer to ASX Announcement “Material Increase in Copper and Gold at Constellation” dated 31st
March
2025,
9
Geological Interpretation and Modelling
The geological interpretation for the Constellation deposit is well constrained by the close-
spaced drilling and detailed geological logging of lithology, alteration, mineralisation, and
structure. The deposit comprises two primary structural zones — a moderately east-dipping
main zone and a steeper northern “stand-up” zone, both of which host copper–gold–silver
mineralisation.
Geological domains were modelled based on 1 m composited assay intervals, supported by
detailed structural and lithological logging. Estimation domains were established for copper,
gold, silver, sulphur, iron, and density, based on statistical and spatial analysis of grade
distributions.
Copper mineralisation domains were defined using 0.1% Cu grade shells in oxide material,
and 0.3% Cu grade shells in supergene and primary sulphide zones, with using sequential
copper data. Weathering surfaces were generated from drill hole logs. Sulphur and iron were
modelled as correlated variables within the same domains.
Resource Estimation Methodology
All data validation, QA/QC review, geological modelling, and grade estimation were
completed internally by Aeris Resources Limited. Data from the exploration and resource
definition drilling programs are securely stored and validated within the company’s acQuire
database.
Copper, gold, silver, sulphur, iron, and density were estimated using Ordinary Kriging (OK)
within a block model constructed with parent block dimensions of 10 m (E) × 10 m (N) × 5 m
(RL). Sub-blocks down to 1 m × 1 m × 1.25 m were used to ensure accurate representation of
mineralisation boundaries and volume control. Kriging neighbourhood analysis was
undertaken to define optimal block and search parameters.
The application of a top-cut was considered for each estimation domain (mineralised and
background) for all elements. Most estimation domains applied a top-cut to exclude outlier
high grades. The assessment of top-cuts was completed through statistical analyses
(histogram distribution, lognormal probability plots, and summary statistics) and by reviewing
the spatial location, continuity, and continuity of grade trends. All contacts are treated as
hard domain boundaries based on reviewing grade trends between adjoining estimation
domains. Different search parameters and variogram models were used as deemed
appropriate for the specifics of each estimation domain.
Model Validation
The block model was validated through multiple approaches, including:
Visual comparison of estimated block grades with composite grades in section and
plan;
Statistical comparison of declustered composites and model grades within each
domain; and
Trend (swath) plots of easting, northing, and elevation to confirm the model
reproduces local grade trends.
10
The validation process confirmed the block model provides an accurate and unbiased
representation of the underlying data and geological interpretation.
Mineral Resource Classification
The Constellation Mineral Resource Estimate (MRE)4 has been classified as Indicated and
Inferred in accordance with the JORC Code (2012 Edition). Classification is based on drill
spacing and confidence in the geological interpretation and grade estimation.
Indicated Mineral Resource: Defined within areas drilled on spacing up to 40 m × 40
m, with a good understanding of the geology and copper grade continuity.
Inferred Mineral Resource: Assigned to areas drilled at a broader spacing of up to 80
m along strike and 100 m down-dip. Geological understanding is appropriate at the
domain scale, and there is some understanding of mineralisation between drillholes.
The classification reflects a robust understanding of the geology and mineralisation,
supporting its use in mine planning and subsequent Ore Reserve estimation.
4 Refer to ASX Announcement “Material Increase in Copper and Gold at Constellation” dated 31st March 2025,
11
Mineral Resource Basis
This Maiden Ore Reserve estimate has been prepared as a subset of this Mineral Resource
reporting only mineralisation classified as Indicated Resource within the reserve pit design as
shown in Figure 3. That is, the Ore Reserves is not additional to the Mineral Resource.
Figure 3. Isometric view looking north showing the March 2025 Indicated and Inferred
Mineral Resource Classification distribution plus the Ore Reserve pit stages
12
Figure 4. Isometric view looking north showing the March 2025 Indicated and Inferred
Mineral Resource Copper grade distribution plus the Ore Reserve pit stages
Mining Factors
The mining components of the study included detailed pit optimisation, strategic scheduling,
pit stage designs and trade-off analysis to assess potential open pit and underground
transition options. This was followed by the design of the preferred open pit stages and the
waste rock storage facility, including rehabilitation concept.
Pit Optimisation Parameters
Cut-off inputs
Economic cut-off grades were determined using a Net Smelter Return (NSR) methodology,
which accounts for revenue contributions from copper, gold, and silver, and incorporates all
costs associated with road haulage to the Tritton mill, processing, site overheads, realisation,
and government royalties.
The following economic parameters were used in the NSR calculations for the pit
optimisations:
Parameter Value
Copper price US$10,377/t (~US$4.71/lb)
Gold price US$2,797/oz
Silver price US$34/oz
Exchange rate AUD 1.00 = USD 0.682
13
Metallurgical inputs
Supergene and sulphide ore types were considered in the pit optimisations. Oxide ore type
was ignored. The average metallurgical recovery and payable factors adopted for the pit
optimisation were as follows:
Copper: 94.5% supergene & sulphide
Gold: 86.7% supergene, 87.1% sulphide
Silver: 34.7% supergene, 83.1% sulphide
Deduction and payabilities are aligned with current Tritton offtake agreements.
No deleterious elements have been identified at concentrations likely to incur smelter
penalties.
Cost inputs
Mining costs were derived from benchmark data for current Aeris managed open pit
operations within the Tritton district, using similar equipment classes and local conditions.
Processing and realisation costs were based on actual operating figures from the Tritton
operations, adjusted for haulage distance.
Mining Method and Mine Design
Mining of the Constellation open pit will utilise conventional open cut hard-rock mining
methods, employing hydraulic excavators and rigid off-highway haul trucks consistent with
other Aeris open pit operations in the region.
The Ore Reserve open pit design was based on the selected shell from the pit optimisations.
It exhibits a relatively high life-of-mine strip ratio averaging 34:1 and is therefore
predominantly a bulk waste mining operation. Mining will be undertaken on 10 m benches,
with 5 m flitches applied around ore zones to enhance selectivity and ore control.
Material Mined Tonnes
Reserve Ore Tonnes 2.3Mt
Waste Tonnes 79.5Mt
Waste (Inferred Resource) 0.6Mt
TOTAL Tonnes 82.4Mt
14
Figure 5. Cross section view showing the ore zone plus 6 pit stages plus depth of weathering.
Reserve Pit Stages 1-6
Constellation ore zone
Depth of weathering
Legend – Cu %
15
Figure 6. Plan view showing the 6 pit stages plus the waste rock storage facility.
Geotechnical
Detailed geotechnical site investigations and analysis to a Feasibility Study standard were
conducted by PSM Geotechnical and Engineering Services. Geotechnical parameters were
derived from geotechnical analysis of the following data sources:
Nearby open pit experience from four of Aeris owned open pits in similar conditions
approximately 25km south-east of the Constellation deposit, including the Larsens,
Hartmans, North-East and Murrawombie Pits.
3D geological models including ore, weathering and fault models,
Borehole data including 29 diamond core holes that were located in favourable
locations to assess the conditions of the open pit.
Groundwater data including open standpipes, piezometers, falling head tests and
packer testing.
Geotechnical laboratory testing.
The resulting recommended design parameters are:
Bench Angles:
Vary between 60° and 75°, with most sectors at 75°, except two sectors at 70° and
60°.
Berm Widths:
Range from 6 m to 9 m depending on sector.
Berm Heights:
Typically 10 m, except one sector with 20 m berm height.
Inter-Ramp Angles:
Range from approximately 45.3° to 57.9°, with values specific to each sector.
Reserve Pit Stages 1-6
Waste Rock
Storage
Facility
16
Figure 7. Showing distribution of variable design parameters across different slope design
sectors.
17
Mining widths and Dilution
The mineralisation geometry varies significantly across the deposit, from sub-vertical to
moderately plunging zones, and more flat-lying domains in localised areas. True ore
thicknesses range from less than 2 m to over 20 m, and a minimum selective mining unit
(SMU) of 4 m has been assumed for design and scheduling purposes.
Mining shapes were developed to capture only Indicated Mineral Resources for inclusion in
the Ore Reserve. Each ore domain was modelled to preferentially include minor dilution
rather than risk ore loss. Inferred Resources, unclassified mineralisation, and internal waste
have been included as planned dilution within the recoverable ore shapes.
An additional 0.5 m of unplanned dilution was applied to all ore contacts, resulting in total
dilution ranging between 11% and 41%, averaging 16%. The contact wall rocks are generally
mineralised, and as such, no net metal loss is expected from dilution material.
Metallurgical Investigations and Processing Assumptions
Metallurgical Testwork and Ore Domains
Comprehensive metallurgical testwork programs have been undertaken under the
supervision of Aeris Resources Limited by independent commercial metallurgical laboratories.
Testing has been conducted on samples representing all major mineralisation styles within the
Constellation deposit, including oxide, supergene, transitional, and primary sulphide
domains. Test samples were selected to capture the range of copper, gold and silver grades,
mineralogy, and geotechnical characteristics across the deposit, and are considered
representative of future mill feed.
The Constellation mineralisation comprises massive to disseminated sulphides containing
pyrite, chalcopyrite, and minor pyrrhotite in the primary zone, with well-developed oxide and
supergene horizons. Oxide mineralisation is dominated by malachite and azurite with minor
chrysocolla and native copper, while the supergene zone is dominated by chalcocite.
Figure 8. Showing example of oxide mineralisation – Drillhole: TAKD063, 29.0 to 33.5m5
5
Refer to ASX announcement “Material increase in copper and gold at Constellation” dated 31 March
2025.
22.10% Cu
6.19% Cu
7.94% Cu
7.16% Cu
18
Figure 9. Showing example of sulphide mineralisation – Drillhole: TAKD019 184.0 to 187.7m6
Metallurgical Recoveries
The following table outlines the recovery assumption used within the financial evaluation:
Copper Gold Silver
Oxide Ore
>1% 65% 75% 0%
<1% >0.75% 55% 70% 0%
<0.75% >0.50% 45% 65% 0%
Supergene Ore 95% 87% 35%
Sulphide Ore 95% 87% 93%
Representativeness and Sample Selection
Drill intercepts utilised in metallurgical testwork represent the full range of ore types and
grade distributions across the Constellation deposit. Samples were selected from multiple
domains and elevations to ensure representativeness of both open pit and underground
mining areas.
Metallurgical Classification Basis
For ore classification and recovery modelling, three metallurgical domains have been
defined:
Oxide zone (malachite–azurite–chrysocolla–native Cu)
Supergene zone (chalcocite-dominant)
Primary zone (chalcopyrite–pyrite–pyrrhotite)
Assay datasets for Acid Soluble Copper (ASCu), Cyanide Soluble Copper (CNCu), Copper
(Cu), and Sulphur (S) were used to delineate these domains and underpin metallurgical
recovery assumptions applied to the Ore Reserve estimate.
6
Refer to ASX Announcements “Constellation continues to shine” dated 27 May 2021 and ASX
announcement “Constellation Update” dated 3 August 2021 for information relating to drill hole
TAKD019.
2.37% Cu
2.08% Cu
1.68% Cu
1.33% Cu
19
Processing and Flowsheet
The Tritton processing plant is located within the Tritton Mine operations and has a
throughput history exceeding 26 Mt over 20 years from multiple ore sources. Metallurgical
testing confirms that ore breakage characteristics and grindability are consistent with Tritton
feed material and will be suitable for treating Constellation ore
Figure10. The Tritton Ore Processing plant will treat the Constellation supergene, sulphide and
high grade oxide mineralisation.
Processing of supergene and primary ores will employ a conventional crushing, grinding, and
flotation circuit.
Supergene ores will be treated using a bulk rougher flotation configuration,
maximising copper recovery and producing concentrates exceeding 22% Cu.
Primary ores will use a selective flotation approach to reject pyrite while achieving
copper recoveries above 95% and concentrate grades above 22% Cu.
Oxide ores respond favourably to CPS flotation using NaHS. Implementation of NaHS
addition and minor instrumentation upgrades will be required at the Tritton plant prior
to processing oxide feed.
Oxide and supergene ores are expected to be treated in batch campaigns, while
Constellation primary ore will be blended with other Tritton-area sulphide sources as part of
normal plant operations.
20
Infrastructure
The Constellation Project will leverage a combination of new and existing infrastructure to
support mining and processing operations. Key infrastructure components proposed for the
site include:
Waste rock storage to manage mined waste material facilities.
Mineralised waste and low grade ore stockpiles.
A run-of-mine (ROM) ore stockpile to facilitate ore handling and feed flexibility.
A mine laydown area and workshop for equipment maintenance and operational
support.
Topsoil stockpiles for site rehabilitation purposes.
A solar farm and on-site power station to supply reliable and sustainable energy.
Water management and storage infrastructure, including a dedicated water pipeline
connecting the Project site to the Murrawombie Copper Mine to optimise water
supply.
Administrative facilities including offices, staff amenities, and car parking.
Ore mined at Constellation will be hauled to the Tritton Operation, located approximately 45
km by road, where the ore processing and tailings storage facilities are established.
Skilled labour is readily available in the region to support mining operations, with
accommodation provided in the nearby town of Nyngan, situated within 55 km of the
Constellation Project.
To support haulage and operational traffic, the following external infrastructure upgrades are
planned:
Upgrades to public roads between Constellation site and Tritton Operations.
An underground water pipeline within the road corridor.
21
Environmental & Regulatory Summary
The Constellation Project is classified as a State Significant Development (SSD-41579871)
under the NSW Environmental Planning and Assessment Act 1979. The Development
Application, supported by an Environmental Impact Statement (EIS)7, was submitted in July
2024 and publicly exhibited between August–September 2024. A Response to Submissions
and subsequent Amendment Report have been lodged, with determination and all
secondary approvals anticipated prior to construction in mid-2026.
A modification to DA 41/98 was approved in September 2025, integrating Constellation with
the Tritton Copper Operations. Key approvals include increased tailings storage capacity,
extended mine life, and tailings export across Tritton mines for potential use as mine backfill.
The Project is located on freehold land within Bogan Shire, a region reliant on agriculture and
mining. A Mining Lease Application is planned for early 2026, with access agreements under
negotiation. Native Title has been extinguished on the subject land.
A comprehensive environmental risk assessment has been completed, identifying all
potential risks as manageable with mitigation. Biodiversity commitments include offsets,
hollow tree salvage, and habitat restoration. Surface water impacts are expected to be
minimal, and a progressive rehabilitation program will create safe, stable, and non-polluting
landforms suitable for agricultural use while enhancing local biodiversity.
Waste rock management will utilise a purpose-built waste storage facility (WSF) and potential
underground backfill. Mineralised oxide material will be stored separately for potential future
processing.
The Project delivers strong social and economic benefits, supporting regional employment,
local infrastructure, and Indigenous engagement. Copper, classified as a strategic mineral,
continues to see rising global demand, reinforcing the strategic importance of the Project.
Aeris remains committed to ecologically sustainable development, balancing operational
objectives with e
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