IsoEnergy to Purchase Toro Vitality, Strengthening a Prime-Tier Uranium Portfolio in a Rising Market

Undertaking

Location

Nation

Class

Tonnes
(m)

U ₃ O ₈ grade (%)

contained
U ₃ O ₈
(m lbs)

V ₂ O ₅ grade (ppm)

contained
V ₂ O ₅
(m lbs)

Hurricane

Saskatchewan

Canada

Indicated

0.1

34.50 %

48.6

Inferred

0.1

2.20 %

2.7

Tony M

Utah

USA

Indicated

1.1

0.28 %

6.6

Inferred

0.4

0.27 %

2.2

Sage Plain

Utah

USA

Indicated*

0.2

0.16 %

0.8

1.3 %

6.5

Inferred*

0.0

0.13 %

0.0

0.9 %

0.2

Daneros

Utah

USA

Indicated*

0.0

0.36 %

0.1

Inferred*

0.0

0.37 %

0.1

Ben Lomond

Queensland

Australia

Indicated*

1.3

0.28 %

8.1

Inferred*

0.6

0.21 %

2.8

Dieter Lake

Quebec

Canada

Inferred*

19.3

0.06 %

24.4

Milo

Queensland

Australia

Inferred*

88.4

0.01 %

14.0

Matoush

Quebec

Canada

Indicated*

0.6

0.95 %

12.3

Inferred*

1.7

0.44 %

16.4

Coles Hill

Virginia

USA

Indicated*

108.5

0.06 %

132.9

Inferred*

32.9

0.04 %

30.4

Whole M&I – 43-101

1.1

55.2

–

Whole Inferred 43-101

0.4

4.9

–

Whole M&I

111.8

209.5

6.5

Whole Inferred

143.4

93.1

0.2

*Consists of historic sources

Itemizing Rule

Clarification

Commentary

5.12.1

The supply and date of the historic estimates or international estimates.

Milo: Milo Mineral Useful resource Assertion: 22 November 2012 contained in an ASX Announcement by GBM Assets Ltd (ASX:GBZ).

Ben Lomond: McKay, A. D., 1982, Ben Lomond Deposit: In Situ Uranium Useful resource Estimate. Confidential Report of the Australian Atomic Vitality Fee Uranium Useful resource Analysis Unit.

Vigar, A & Jones, D. 2005 Technical Report on the Mining Leases Protecting the Ben Lomond Uranium – Molybdenum Deposit Queensland, Australia. Ready for Maple Minerals Company as a NI-43-101 Report. Accessible at https://ww.sedarplus.ca.

Coles Hill: The Coles Hill Mineral Assets are thought-about to be historic in nature. The newest Mineral Useful resource estimate was ready by Lyntek, Inc. and BRS Engineering in 2013 (Kyle, John I., P. E. and Douglas Beahm, P.E., P.G., 2013; NI 43-101 Preliminary Financial Evaluation Replace (REVISED), Coles Hill Uranium Property, Pittsylvania County, Virginia, United States of America, and relies upon assay and geologic knowledge collected by the previous proprietor, Marline Oil Co, who drilled out the undertaking between 1979 and 1981. All assays and geotechnical knowledge used to develop the Mineral Useful resource estimate for the Coles Hill undertaking was generated from that exploration program.

Tony M: IsoEnergy’s Tony M mine undertaking has a Mineral Useful resource estimate that’s present throughout the context of the Canadian Institute of Mining, Metallurgy and Petroleum (CIM) Code for Mineral Reserves and Mineral Assets (CIM Code). Whereas the CIM Code is a international estimate, its classification of Mineral Assets is comparable in most respects to these of the JORC Code.

Daneros: The Mineral Useful resource estimate for the Daneros mine undertaking of IsoEnergy is taken into account to be historic in nature. Historic exploration knowledge utilized in IsoEnergy’s undertaking analysis was derived from floor rotary and core holes drilled by Utah Energy & Mild and White Canyon Uranium (collectively 603 drill holes), and underground lengthy holes (583 holes) drilled by Deneson Mines and Vitality Fuels. Numerous Mineral Useful resource estimates, all of that are historic in nature and never in compliance with the JORC Code in 2009 for White Canyon Uranium and Vitality Fuels, Inc. in 2012 and 2018. The information used to arrange these experiences was historic exploration drilling knowledge and geologic data from prior mining operations.

Dieter Lake: The newest historic, international Mineral Useful resource estimate performed for the Dieter Lake undertaking in Northern Quebec is documented in two experiences. The primary is “2005 Exploration on the Dieter Lake Property, Quebec dated November 3, 2006” by Dahrouge Geological Consulting Ltd. for Strathmore Minerals Company which for the primary time describes the brand new useful resource estimate. This estimate, together with an replace on exploration exercise from 2007 to 2011, was repeated in “Technical Report on the Dieter Lake Property, Quebec, Canada” dated October 7, 2011″, ready GeoVector Administration Inc. for Fission Vitality Corp (www.sedarplus.ca). Clinton Davis was an creator on each experiences. Michael Guo did the 2005 modelling and was a co-author on the 2006 report. Previous to the 2005 estimate, historic useful resource estimates had been accomplished in 1981, 1989, and 2004.

Davis, C. & Guo, M. (2006). 2005 Exploration on the Dieter Lake Property, Quebec; NI 43-101 Report for Strathmore Minerals Corp, 28 p., with appendices.

Davis, C.F, (2011), Fission Vitality Corp, Technical Report on the Dieter Lake Property, Quebec, Canada, NI43-101 Report for Fission Vitality Corp, 47 p., with appendices (www.sedarplus.ca).

Sage Plain: Mineral sources for IsoEnergy’s Sage Plain undertaking have been estimated by an unbiased contractor to the undertaking’s then present proprietor, Vitality Fuels, Inc. and reported within the “Up to date Technical Report on Sage Plain Undertaking (together with the Calliham Mine)” dated March 18, 2015 and authored by Douglas C. Peters, CPG of Peters Geosciences. The Technical Report follows the format of NI 43-101, however the creator didn’t establish any Mineral Reserve and Mineral Useful resource code used to categorise the mineralization. Assets have been estimated by using a polygonal technique. IsoEnergy considers the Sage Plain sources to be historic in nature.

Matoush: The newest historic, international Mineral Useful resource estimate is documented in “Technical Report on the Mineral Useful resource Replace for the Matoush Undertaking, Central Québec, Canada, NI43-101 Report” dated February 15, 2012, ready by David A. Ross, R. Barry Cook dinner, Normand L. Lecuyer, and Bruce Fielder (Melis Engineering Ltd.) of Roscoe Postle Associates Inc. (“RPA”) for Strateco Assets Inc. This report is out there on www.sedarplus.ca. The historic, international Mineral Useful resource estimate was additional up to date by RPA in December 2012, as disclosed in a press launch of Strateco dated December 7, 2012, and in Strateco Assets’ Annual Data For, dated March 21, 2013 (obtainable on www.sedarplus.ca). RPA up to date the Mineral Useful resource estimate for the Matoush undertaking primarily based on drill outcomes obtainable as at November 22, 2012.

Hurricane: The newest international Mineral Useful resource estimate is documented in “Technical Report on the Larocque East Undertaking, Northern Saskatchewan, Canada” for IsoEnergy Ltd. This report was ready by Mark B. Mathisen of SLR Consulting (Canada) Ltd. (“SLR”). Two variations, each with an efficient date of July 8, 2022, can be found at www.sedarplus.ca – one with a signature date of July 12, 2022, and an amended model with a signature date of August 4, 2022. It’s defined within the amended report that this Technical Report conforms to NI 43-101 Requirements of Disclosure for Mineral Initiatives and replaces the technical report filed on SEDAR on July 19, 2022, which has been revised to appropriate the typographical error associated to the Indicated U3O8 grades in Desk 14-11, which summarizes the block mannequin sensitivity to cut-off grade. Further typographical errors have been corrected to align the descriptions of historic drilling in Part 6 with Desk 10-1. The really helpful work plan has been revised.

5.12.2

Whether or not the historic estimates or international estimates use classes of mineralisation aside from these outlined in Appendix 5A (JORC Code) and in that case, a proof of the variations.

Milo: The Inferred useful resource was calculated in accordance with JORC 2004.

Ben Lomond: The Inferred useful resource used JORC terminology of the time (1982).

Coles Hill: Estimates of Mineral Assets for the Coles Hill undertaking have been ready in accordance with Canadian Nationwide Instrument 43-101 and CIM requirements that have been in impact on the time that the useful resource estimate was ready (2013). The estimate predates the present CIM Requirements and CIM Estimation of Mineral Assets & Mineral Reserves Finest Practices Pointers, which turned efficient in November, 2019. IsoEnergy considers the Coles Hill sources to be historic in nature. Using “Inferred Mineral Assets” and “Indicated Mineral Assets” observe the necessities of the CIM Code. The definitions of such classifications (“Inferred Mineral Assets” and “Indicated Mineral Assets”) are much like these classifications underneath the JORC Code, and there aren’t any variations within the definitions of “Inferred Mineral Assets” and “Indicated Mineral Assets” between the 2 Codes.

Tony M: The “present” Mineral Useful resource estimate for the Tony M undertaking was ready in compliance with the CIM Definition Requirements for Mineral Assets & Mineral Reserves (2014), CIM Uranium Main Observe Pointers (2024) and Canadian Nationwide Instrument 43-101. The definitions of Mineral Useful resource classifications for “Indicated Mineral Assets” and “Inferred Mineral Assets” underneath the CIM Code are much like the JORC Code definitions of “Inferred Mineral Assets” and “Indicated Mineral Assets”.

Daneros: Mineral sources for the Daneros Mine undertaking have been estimated for former undertaking proprietor Vitality Fuels, Inc. by Douglas C. Peters, CPG and this estimate is contained throughout the “Up to date Report On The Daneros Mine Undertaking, San Juan County, Utah, U. S. A.” dated March 2, 2018. Though the useful resource is taken into account to be historic, the estimate makes use of useful resource classifications which might be the identical as these of the JORC Code.

Dieter Lake: The Davis and Guo (2006) report and contained Mineral Useful resource estimate predate the present CIM Requirements (Might 2014) and CIM Estimation of Mineral Assets & Mineral Reserves Finest Practices Pointers (November 2019), and for IsoEnergy the Mineral Assets are a historic estimate underneath Nationwide Instrument 43-101 – Requirements of Disclosure for Mineral Initiatives (“NI 43-101”) and a certified particular person has not performed enough work to categorise the historic estimate as present Mineral Assets. It’s unsure whether or not the Inferred sources within the 2006 report would qualify as Inferred sources underneath JORC requirements.

Sage Plain: Assets estimated and reported within the 2015 Technical Report on the Sage Plain Undertaking” are historic in nature don’t look like in keeping with Mineral Useful resource codes in impact on the time of the report.

Matoush: The Ross et al (2012) report and contained Mineral Useful resource estimate, and the historic, international Mineral Useful resource replace within the March 21, 2013 Strateco Assets Annual Data Type predate the present CIM Requirements (Might 2014) and CIM Estimation of Mineral Assets & Mineral Reserves Finest Practices Pointers (November 2019), and for IsoEnergy the Mineral Assets are a historic estimate underneath Nationwide Instrument 43-101 – Requirements of Disclosure for Mineral Initiatives (“NI 43-101”) and a Competent Individual has not performed enough work to categorise the historic estimate as present Mineral Assets. It’s unsure whether or not the Inferred and Indicated sources within the 2012 report would qualify as Inferred sources underneath JORC (2012) requirements.

Hurricane: The Mathison (2022) report conforms to NI 43-101 Requirements of Disclosure for mineral tasks. International mineral sources have been labeled in accordance with definitions for mineral sources within the Canadian Institute of Mining, Metallurgy and Petroleum (CIM) Definition Requirements for Mineral Assets and Mineral Reserves dated Might 10, 2014. The definitions of Mineral Useful resource classifications for “Indicated Mineral Assets” and “Inferred Mineral Assets” underneath the CIM Code are much like the JORC Code definitions of “Indicated Mineral Assets” and “Inferred Mineral Assets”.

5.12.3

The relevance and materiality of the historic estimates or international estimates to the entity.

Milo, Ben Lomond, Daneros, Dieter Lake, Sage Plain, Matoush, Coles Hill: The estimate is taken into account related nonetheless not materials within the context of world uranium sources held.

Tony M: The Tony M undertaking Mineral Assets are “present” underneath the CIM Code and should not “historic” in nature. As such they’re related and are materials to IsoEnergy.

Hurricane: The Mathisen (2022) international Mineral Useful resource estimate, is taken into account to be each related and materials to IsoEnergy.

5.12.4

The reliability of historic estimates or international estimates, together with by reference to any of the standards in Desk 1 of Appendix 5A (JORC Code) that are related to understanding the reliability of the historic estimates or international estimates.

Milo: The estimates would require some further work to adapt to JORC 2012 nonetheless the methodologies for making ready the useful resource estimates haven’t modified considerably compared to earlier reporting.

Ben Lomond: The estimate is indicative of the mineralisation current nonetheless substantial re-drilling and assaying, down gap surveys and radiometric logging and so on can be required to offer a JORC 2012 useful resource estimate.

Coles Hill: Though the Coles Hill useful resource estimate is taken into account to be an correct and related illustration of the character of the uranium mineralization on the undertaking, further work, as per the suggestions within the technical report, shall be required for the sources to be reclassified as “present” underneath the CIM Code and the CIM Uranium Main Observe Pointers (2024). The prevailing useful resource estimate was ready in accordance with the then-prevailing NI 43-101 and CIM requirements, though the drill gap knowledge that varieties the idea of the useful resource estimate had not been confirmed on the time the estimate was ready. Whereas this estimate predates the present CIM Requirements (2014) and CIM Estimation of Mineral Assets & Mineral Reserves Finest Practices Pointers (November, 2019), the methodologies for making ready and evaluating the useful resource estimates haven’t modified considerably compared to these in impact on the time of the newest estimate (2013). The historic Mineral Assets are thought-about to be dependable.

Tony M: The Tony M sources are related and dependable within the context of evaluating the undertaking. The sources are “present” and should not historic in nature.

Daneros: Assets on the Daneros mine should not “present” and are historic in nature. Nonetheless, they might be related to the analysis of the undertaking and its exploration potential sooner or later.

Dieter Lake: The historic, international, Inferred sources introduced in each the Davis and Guo (2006) and Davis (2011) experiences predate the present CIM Requirements (Might 2014) and CIM Estimation of Mineral Assets & Mineral Reserves Finest Practices Pointers (November 2019), and for IsoEnergy the Inferred sources are a historic estimate underneath Nationwide Instrument 43-101 – Requirements of Disclosure for Mineral Initiatives (“NI 43-101”) and a Competent Individual has not performed enough work to categorise the historic estimate as present Mineral Assets. Till this work is finished, the reliability of the historic Dieter Lake useful resource estimate is unsure.

Sage Plain: The methodology for useful resource estimation used for the Sage Plain undertaking is in keeping with historic work all through the central Colorado Plateau uranium area. Polygonal estimation methodology, and the classification of sources and/or reserves derived from such research have served small underground uranium mining adequately for many years. Whereas native miners are aware of the classifications and methodologies, they aren’t applicable or dependable for IsoEnergy.

Matoush: The Ross et al (2012) report and contained Mineral Useful resource estimate, and the historic, international Mineral Useful resource replace within the March 21, 2013 Strateco Assets Annual Data Type predate the present CIM Requirements (Might 2014) and CIM Estimation of Mineral Assets & Mineral Reserves Finest Practices Pointers (November 2019), and for IsoEnergy the Mineral Assets are a historic estimate underneath Nationwide Instrument 43-101 – Requirements of Disclosure for Mineral Initiatives (“NI 43-101”) and a Competent Individual has not performed enough work to categorise the historic, international estimate as present Mineral Assets. Till this work is finished, the reliability of the historic, international Mineral Useful resource estimate is unsure, and it’s unsure whether or not the Inferred and Indicated sources within the 2012 report would qualify as Inferred and Indicated sources underneath JORC (2012) requirements.

Hurricane: The Mathison (2022) report conforms to NI 43-101 Requirements of Disclosure for mineral tasks. International Mineral Assets have been labeled in accordance with definitions for Mineral Assets within the Canadian Institute of Mining, Metallurgy and Petroleum (CIM) Definition Requirements for Mineral Assets and Mineral Reserves dated Might 10, 2014 present CIM Requirements (Might 2014), and IsoEnergy experiences the Mineral Assets as a compliant estimate underneath Nationwide Instrument 43-101 – Requirements of Disclosure for Mineral Initiatives (“NI 43-101”).

5.12.5

To the extent identified, a abstract of labor applications on which the historic estimates or international estimates are primarily based and a abstract of the important thing assumptions, mining and processing parameters and strategies used to arrange the historic or international estimates.

Milo:

The newest JORC 2004 Mineral Useful resource estimate was accomplished for the Milo Undertaking by Kerrin Allwood F.AusIMM and revealed as a JORC 2004 Useful resource in 2012 (Allwood.Okay , Nov, 2012). The Nov, 2012 historic JORC 2004 Useful resource estimate was calculated for co-incident TREEYO & P2O5 and a copper equal useful resource comprising Au, Ag, Cu, Mo, Co & U. The Milo JORC 2004 estimate block mannequin was generated from 34 drillholes and 9878 samples with a complete core size of 11572m, all of which have been competed by GBM Assets Ltd (ASX:GBZ) from 2009 to 2012.

Detailed summaries of the GBM Assets Ltd drill applications accomplished from 2009 to 2012 are lined in Allwood & Norris (Feb, 2012), Allwood & Norris . (August, 2012), and Allwood & Norris (Nov, 2012). The target of diamond drill applications from 2009 to 2012 was to confirm and check the Milo deposit ( 22 drillholes, 3696 samples ) (, Allwood & Norris Feb, 2012), establish anomalous intersections within the Milo deposit for observe­ up drilling Allwood & Norris . (August, 2012), 31 drillholes for 11464m of drilling and full an additional 3 drillholes to finish the Inferred useful resource for an preliminary Scoping Research Allwood & Norris ( Nov, 2012), 34 drillholes, 11572m, 3503 RC, 8069 DD. 9878m sampled at largely 1m intervals.

Ben Lomond:

In whole 73,151 m of drilling was accomplished with 63,292 obtainable for the quatoed estimate. ( detailed under ). All holes have been radiometrically logged. The information was digitised in order that laptop evaluation together with the restitution of logs and the estimation of sources, might be carried out at numerous cut-off grades.

Chemical analyses of the core gave the required management for the radiometric equivalent-grade calculations, by defining the equilibrium ratio between radiometric grade and the precise grade as decided by evaluation. Intensive documentation exists on the calibration of the assorted spectrometers used through the drilling campaigns and a special calibration issue is used for every. The precise uranium values used are due to this fact a mixture of precise assays and down-hole spectrometer probe readings. Correlation general is nice and discrepancies minor (McKay 1982).

The parameters used within the collection of the ore intervals have been a minimal true thickness of 0.5 metres and most included waste (true thickness) of 5 metres. Useful resource zones have been outlined on 25m sections utilizing teams of intersections, remoted intersections weren’t included. The grades from the composites have been space weighted to offer the common grade above a threshold of 500 ppm uranium. The world was measured on every 25m part to offer the tonnage at a bulk density of two.603

The useful resource classes have been chosen primarily based on the Australian JORC code tips of the time. The classes have been:
• Indicated — prolong as much as 5 metres from a drill-hole up or down dip, or half the gap to the following drill-hole if lower than 5 metres.
• Inferred – prolong 5 to fifteen metres from a drill-hole up or down dip, or half the gap to the following drill-hole if between 5 and 15 metres.

Drilling 1975-1981
No. of Holes         Metres
Diamond Core Floor                   98                   19,459

Underground                                   30                   2,797
Percussion  Floor                        201                 28,915
Underground                                77                    2,582
Air Trac    Floor                         230                  9,539
SUB-TOTAL:                                   636                  63,292

1982-1984:
No. of holes   Metres
Diamond core
Floor                                          21                     4,895

Percussion
Floor                                          43                     4,964

GRAND TOTAL:                            700                   73,151

Coles Hill:

The Coles Hill uranium deposits have been found by Marline Oil in 1979 and 1980. Marline carried out a large-scale core drilling program to check their beforehand recognized geophysical, radiometric, and geochemical anomalies on the undertaking website, and this work resulted within the preliminary definition of the Coles Hill North and South uranium deposits. The Marline core drilling program prolonged into 1981, and the information generated from that drilling program has served as the idea for all subsequent useful resource estimations. In 1982 Union Carbide Company (later often known as Umetco) entered right into a three way partnership with Marline with the target of making ready a feasibility examine that may result in the event of the Coles Hill uranium deposits and advance the undertaking to a manufacturing standing. Mineral useful resource estimates for the undertaking which might be thought-about to be related to the undertaking have been ready using the radiometric and chemical assays derived from the 1979-1981 drilling program of 263 core holes, in addition to 3 core holes drilled on the property in 2008. The basic assay and geological knowledge for the undertaking was preserved, and a good portion of the core was saved in lined amenities. Comparability of historic assay knowledge with “test” assays from sampling applications in 2008 and 2013 usually confirmed the validity of the historic knowledge. The Mineral Useful resource estimate for the undertaking have been estimated by BRS Engineering, a Wyoming-based unbiased minerals exploration and engineering firm that has in depth expertise within the analysis of uranium tasks. BRS employed radiometric assay knowledge from 264 drill holes to develop the estimate of Mineral Assets at Coles Hill. Drill gap assay knowledge was compiled in Datamine software program at an interval of 0.50 ft inside a “mineralized envelope” of 0.02% eU3O8 to constrain grade interpolation. A pattern composite of 1.0 ft was chosen.

The kriging methodology employed optimum block sizes and the optimum variety of samples to entry within the estimate have been decided by various check runs on strategically positioned blocks in excessive density and low-density areas in every space. The optimum parameters have been decided by observing what produced the perfect regression slope (R) and kriging effectivity, and the bottom unfold in 90% confidence limits, however nonetheless retaining the smallest block dimension regarding the possible future smallest mining unit (“SMU”). These three parameters produced good correlations amongst themselves. Three separate searches have been affected, particularly 1 instances the vary of the variogram, 1.5 instances the vary of the variogram and a pair of instances the vary of the variogram. For the North Coles a minimal of 17 samples and a most of 25 samples have been deemed to be geostatistically applicable for the primary two searches. The third search was set at a minimal of 8 samples and a most of 25 samples. For the South Coles a minimal of 10 samples and a most of 20 samples for the primary two searches and for the third a minimal of 8 samples and a most of 20 samples have been deemed to be applicable (Figures 19 and 21). The search was confined to a particular layer as a result of vertical variability of the mineralization and due to this fact the octant search technique was deemed pointless. A draft NI 43-101 Preliminary Financial Evaluation date (Revised) on the Coles Hill undertaking was ready for former proprietor Virginia Vitality in 2013 by John Kyle of Lyntek, Inc. and Douglas Beahm, principal Engineer of BRS Engineering, Inc. This examine, which isn’t publicly obtainable, contains knowledge verification data for the entire drill gap data, together with assays, in addition to summaries of metallurgical testing undertaken by Umetco Minerals, proposed mining strategies, metallurgical restoration strategies, and proposed undertaking infrastructure. Copies of this report are in IsoEnergy’s information. This examine of the Coles Hill undertaking included knowledge on mining and mineral processing methodologies in enough element to establish cut-off grade standards for estimation of Mineral Assets.

Tony M:

The Tony M uranium deposit and several other different comparable and close by deposits have been found in a distant a part of southeast Utah within the mid Nineteen Seventies by Plateau Assets, a subsidiary of a midwestern US electrical utility firm. Plateau’s discovery was made by way of wide-spaced exploration drilling in an space of a number of very small-scale underground mines. The newly found deposits have been outlined by typical “open gap” rotary drilling and “spot “coring of doubtless financial mineralization inside favorable flat mendacity sandstones. Plateau commenced with the event of a large-scale room and pillar underground mine in 1978. There was restricted uranium manufacturing from Tony M previous to its shut-down in 1984, however manufacturing was restarted for a brief time frame in 2007-2008, earlier than being shut down once more attributable to low commodity costs. From the time of discovery to shut-down of mining operations at Tony M a substantial quantity of drill knowledge from floor drilling and underground long-hole drilling was collected, and that knowledge, in addition to mine operational knowledge and metallurgical restoration data supplied a considerable basis for a brand new Mineral Useful resource estimate that was ready in 2022 by SLR Worldwide Company. and these knowledge conform to Canadian Nationwide Instrument 43-101 Requirements of Disclosure for Mineral Initiatives. The report, entitled “Technical Report on the Tony M Mine, Utah, USA Report for NI 43-101” is dated September 9, 2022, and could be seen by way of IsoEnergy’s profile on the SEDAR Plus website (accessed 8/11/2025). The useful resource estimate was primarily based upon the outcomes of 1,678 vertical typical (“open gap”) rotary drill holes, totalling 947,610 ft. One thousand 600 seventy of the drill holes have been accomplished by former proprietor of the Tony M mine Plateau Assets and the rest (eight) have been accomplished by IsoEnergy. The eight IsoEnergy holes have been drilled as offsets to holes beforehand drilled by Plateau in an effort to affirm the outcomes of the historic drill holes. The holes drilled by IsoEnergy included 2,555 ft of “typical” open gap rotary drilling and 439 ft of core. All holes have been vertical in orientation. Mineral sources on the Tony M undertaking have been labeled in accordance with the Canadian Institute of Mining, Metallurgy and Petroleum (CIM) Definition Requirements for Mineral Assets and Mineral Reserves, dated Might 10, 2014, definitions that are included by reference in NI 43-101.

SLR estimated the sources utilizing a standard block modelling method using the inverse squared (ID2) methodology and length-weighted 1.0- foot uncapped composites to estimate the uranium grades (% eU3O8) in a three-pass method. The useful resource estimate was primarily based upon a US$65 per pound uranium value, and a cut-off grade oof 0.14% eU3O8. IsoEnergy is in possession of the entire technical knowledge used to arrange the present Mineral Useful resource estimate.

Daneros: The Daneros mine undertaking has been the location for quite a few exploration and growth actions because the early Fifties. A lot of the information from these efforts has been misplaced or isn’t accessible to IsoEnergy. Latest mine manufacturing and exploration undertaken by IsoEnergy has supplied knowledge for analysis of the undertaking and exploration planning however isn’t full sufficient for a brand new useful resource estimate or for up to date mine planning.

Dieter Lake: Primarily based on the Davis and Guo (2006) and Davis (2011) experiences, the 2006 historic, international Mineral Useful resource estimate, which is repeated within the 2011 report, used each 2005 drill core resampling knowledge and historic knowledge from 96 drill holes. Useful resource modelling was additionally up to date in 2005 as a part of the analysis of the information collected through the 2005 exploration program and in comparison with the present historic useful resource mannequin. This estimate used 200 m radius polygons, a minimal cutoff of 200 ppm over 1 metre, and a density of two.67g/cm ³ .

Sage Plain: Information of exploration outcomes and uranium manufacturing from the Sage Plain undertaking space are usually restricted to borehole gamma-ray logs, and drill gap maps of applications carried out periodically, and so they have served as the idea for the historic estimates. The historic useful resource estimates for the Sage Plain undertaking have been usually calculated utilizing both a polygonal or circle-tangent modelling technique, each of which have been outdated by extra relevant geostatistical useful resource estimation strategies. Summaries of historic exploration and mining actions on the Sage Plain undertaking should not obtainable to IsoEnergy. The historic useful resource estimates don’t conform to both the present JORC Code or the CIM Code.

Matoush: The Ross et al (2012) historic, international Mineral Useful resource estimate within the NI43-101 report dated February 15, 2012 for Strateco Assets utilized drill gap knowledge obtainable as of December 31, 2011 when the Matoush Gemcom database included 515 diamond core holes as much as and together with gap MT-11-039. Of those, 392 holes representing 175,190 m of drilling are positioned throughout the space of sources. The wireframe fashions representing the mineralized zones are intersected by 150 drill holes. As of December 31, 2011, chemical analyses for all holes had been acquired. Equal U3O8 (eU3O8) values weren’t used for this useful resource estimate, as was performed in earlier useful resource estimates. A set of cross-sections and plan views have been used to assemble three-dimensional wireframe fashions at a cut-off grade of 0.1% U3O8. Excessive-grade values have been reduce to 9% U3O8 previous to compositing. Outlines of the mineralized lenses have been interpreted on ten-metre spaced vertical sections. Minimal standards of 0.1% U3O8 over 1.5 m true thickness was used as a information. Slender intercepts grading 0.05% to 0.1% U3O8 positioned adjoining to the primary mineralized intercept have been included. The place mandatory, the wireframe intercept was “bulked out” to a minimal of 1.5 m true thickness. Low-grade intercepts have been included within the preliminary wireframe fashions for zones MT-34 and MT-22. Many of those intercepts have been eliminated by clipping the useful resource wireframe if under 0.1% U3O8. Some intersections grading 0.05% to 0.1% U3O8 have been included within the grade interpolation to protect continuity and/or keep a delicate boundary. Variogram parameters have been interpreted from two-metre composited values. Pattern intervals throughout the wireframe fashions vary from ten centimetres to 5 metres, and common 70 cm. Assays throughout the wireframe fashions have been composited to two-metre lengths beginning on the first mineralized wireframe boundary from the collar and resetting at every new lens wireframe boundary. A number of shorter composites happen on the backside of the mineralized zone, instantly above the place the drill gap exits the wireframe. Partial composites lower than 60 cm lengthy have been faraway from the dataset. Non-assayed intervals have been handled as zero grade. Block U3O8 grades throughout the wireframe fashions have been estimated by extraordinary kriging. For density, RPA reviewed outcomes of 945 bulk density measurements made by Strateco technicians utilizing the water immersion technique. RPA concluded that smaller samples could have poor accuracy and precision, and due to this fact elected to make use of solely samples weighing higher than 450 g to calculate the common density of mineralization at 2.6 t/m3. This issue was then used to transform useful resource volumes to a tonnage. RPA manually labeled the Mineral Assets primarily based on drill gap spacing, geology, lens thickness, continuity, and variogram ranges. Most areas of Indicated are supported by 30 m to 40 m drill gap spacing, with some exceptions in areas of thicker and extra steady mineralization the place drill gap spacing as much as 50 m was included. The drill gap spacing within the AM-15 zone is usually lower than 20 m. The MT-34 (Fundamental lens), South lens, and a lot of the North Lens have been labeled as Indicated. Though there are some areas of carefully spaced drilling within the higher MT-34 (a part of AM-15 zone) and South lenses, no blocks have been labeled as measured as a result of grade and geometrical continuity has not been established to the boldness degree required for the measured class.

A number of shorter composites happen on the backside of the mineralized zone, instantly above the place the drill gap exits the wireframe. Partial composites lower than 60 cm lengthy have been faraway from the dataset. Non-assayed intervals have been handled as zero grade. Block U3O8 grades throughout the wireframe fashions have been estimated by extraordinary kriging. For density, RPA reviewed outcomes of 945 bulk density measurements made by Strateco technicians utilizing the water immersion technique. RPA concluded that smaller samples could have poor accuracy and precision and due to this fact elected to make use of solely samples weighing higher than 450 g to calculate the common density of mineralization at 2.6 t/m3. This issue was then used to transform useful resource volumes to a tonnage. RPA manually labeled the Mineral Assets primarily based on drill gap spacing, geology, lens thickness, continuity, and variogram ranges. Most areas of Indicated are supported by 30 m to 40 m drill gap spacing, with some exceptions in areas of thicker and extra steady mineralization the place drill gap spacing as much as 50 m was included. The drill gap spacing within the AM-15 zone is usually lower than 20 m. The MT-34 (Fundamental lens), South lens, and a lot of the North Lens have been labeled as Indicated. Though there are some areas of carefully spaced drilling within the higher MT-34 (a part of AM-15 zone) and South lenses, no blocks have been labeled as measured as a result of grade and geometrical continuity has not been established to the boldness degree required for the measured class.

In 2012, Strateco Assets carried out a further 15,000-metres drilling, together with some 11,000 metres of definition drilling geared toward outlining the Indicated useful resource throughout the boundaries of the brand new Inferred useful resource zones. On December 7, 2012, the Strateco Assets introduced the outcomes of the most recent Matoush undertaking historic, international Mineral Useful resource replace by RPA, which confirmed that the Indicated Mineral Useful resource had elevated because the earlier useful resource estimate, dated February 15, 2012. The replace was primarily based on drill outcomes obtainable as of November 22, 2012 and was additionally revealed of their March 21, 2013 Annual Data Type which is out there on www.sedarplus.ca

Hurricane: The closing date of the Mineral Useful resource database is March 22, 2022, which represents the date wherein all assays have been acquired from IsoEnergy’s Winter 2022 drill program. The Hurricane useful resource database, dated March 22, 2022, contains drill gap collar places (together with dip and azimuth), assay, alteration, geochemical, and lithology knowledge from 106 drill holes totalling 37,875.3 m of drilling accomplished from 1983 by way of spring of 2022. A complete of 785 samples of the 1,504 within the database have been contained throughout the mineralized uranium wireframes. The wireframe fashions representing the Hurricane low-grade (LG), medium-grade (MG) and high-Grade (HG) mineralized zones are intersected by 48 of 106 drill holes. Geological interpretations supporting the estimate have been generated by SLR and reviewed by IsoEnergy personnel. Wireframe fashions of mineralized zones have been used to constrain the block mannequin grade interpolation course of. The fashions characterize grade envelopes utilizing the geological interpretation described above as steerage.

The wireframes consisted of a LG area utilizing a nominal COG of 0.05% U3O8 and a minimal core size of 1 metre. SLR considers the collection of 0.05% U3O8 to be applicable for building of mineralized wireframe outlines, as this worth displays the bottom COG that’s anticipated to be utilized for reporting of the Mineral Assets in an underground working situation and is in keeping with different identified deposits within the Athabasca Basin. Pattern intervals with assay outcomes lower than the nominated COG have been included throughout the mineralized wireframes if the core size was lower than two metres or allowed for modelling of grade continuity. Wireframes of the MG and HG domains have been created utilizing a grade intercept restrict equal to or higher than one metre with a minimal grade of 5% U3O8 and 25% U3O8, respectively, though decrease grades have been included in locations to take care of continuity and to satisfy a minimal thickness of 1 metre.

Uranium outliers have been capped at 5% U3O8 and 20% U3O8 throughout the LG and MG domains, leading to a complete of 10 capped assay values. No capping was utilized to the HG area. SLR’s QP selected to restrict the affect of the upper grade composites by using spatial restriction within the Excessive Grade area. SLR used the Leapfrog restrictive search software “clamp” that reduces the excessive worth to a threshold worth as soon as the utmost distance is reached somewhat than discarding the excessive grade composite fully. The utmost distance of affect was set to fifteen m x 15 m x 1.5 m with a grade x density threshold worth of 250 (roughly equal to 55% U3O8) in each estimation passes. Composites have been created from the capped, uncooked assay values utilizing the downhole compositing operate of Seequent Leapfrog Geo modelling software program bundle. The composite lengths used throughout interpolation have been chosen contemplating the predominant sampling size, the minimal mining width, fashion of mineralization, and continuity of grade, and ranged from 0.5 m to three.0 m throughout the wireframe fashions, with 97.2% of the samples taken at 0.5 m intervals. Given this distribution, and contemplating the width of the mineralization, the SLR QP selected to composite to at least one metre lengths. Assays throughout the wireframe domains have been composited beginning on the first mineralized wireframe boundary from the collar and resetting at every new wireframe boundary. Assays have been capped previous to compositing. A small variety of unsampled and lacking pattern intervals have been ignored. Residual composites have been maintained within the dataset.

SLR generated downhole, omni-directional, and directional variograms utilizing the one metre U3O8 composite values positioned throughout the LG and MG mineralized domains. The MG area variogram was calculated utilizing composites positioned inside MG and HG wireframes to permit for extra pairs within the evaluation. The variograms have been used to help search ellipsoid anisotropy, linear tendencies noticed within the knowledge, and Mineral Useful resource classification choices. The downhole variograms suggests a relative nugget impact of roughly 10%. Lengthy vary directional variograms have been targeted within the major airplane of mineralization, which generally strikes northeast and horizontally throughout the strike course. Most ranges have been interpreted to be 27 m to 35 m. The uranium grade was used to estimate the density of every pattern with the polynomial system. Densities have been then interpolated into the block mannequin to transform mineralized volumes to tonnage and have been additionally used to weight the uranium grades interpolated into every block. All modelling work was carried out utilizing Leapfrog Edge model 2021.2.4 software program. The Hurricane block mannequin has 5 m x 2 m x 1 m entire blocks. A regularized entire block method was used whereby the block was assigned to the area the place its centroid was positioned. The variables Grade, Density, and Grade x Density have been interpolated for U3O8 utilizing the inverse distance cubed (ID3) methodology. Estimation of grades was managed by mineralized wireframe zones. So as to reproduce the course of the skinny, folded, and faulted domains, SLR employed a variable orientation software in Leapfrog Edge. The software permits the search to be domestically adjusted to the orientation of the mineralization, which leads to improved native grade estimates. SLR used the hanging wall and footwall of every area to information the variable course search.

Onerous boundaries have been used to restrict the usage of composites between totally different mineralization domains for U3O8 interpolation. SLR validated the block mannequin utilizing the next strategies:

•         Swath plots of composite grades versus ID3, extraordinary kriging (OK), and nearest neighbour (NN) grades within the X, Y, and Z

•         Volumetric comparability of blocks versus wireframes

•         Visible Inspection of block versus composite grades on plan, vertical, and lengthy part

•         Statistical comparability of block grades with assay and composite grades

SLR discovered grade continuity to be affordable and confirmed that the block grades have been moderately in keeping with native drill gap composite grades.

A evaluate of different uranium growth tasks and working mines within the Athabasca Basin was undertaken to establish sure working parameters as they relate to the estimate of a cut-off grade (COG).

The next assumptions have been used within the growth of the COG for Hurricane:

•         Hurricane can be developed utilizing distant mining extraction strategies much like different growth tasks or working mines within the Athabasca Basin.

•         Metallurgical restoration is assumed to be much like different previous and current uranium mines within the Athabasca Basin.

•         The long-term U3O8 value is assumed to be US$65/lb U3O8, and the change price is assumed to be C$/US$ = 0.75.

•         Provincial income royalties are primarily based on tips revealed by the Saskatchewan authorities.

•         Working prices can be consultant of a distant mining extraction technique.

Making use of these elements resulted in a COG of 1.00% U3O8.

Classification of Mineral Assets as outlined in Canadian Institute of Mining, Metallurgy and Petroleum definition Requirements for Mineral Assets and Mineral Reserves (CIM 2014) have been adopted for classification of Mineral Assets.

The SLR QP has thought-about the next elements that may have an effect on the uncertainty related to every classification of Mineral Assets: reliability of sampling knowledge, confidence in interpretation and modelling of geological and estimation domains, and confidence in block grade estimates. The SLR QP presents the next conclusions associated to every of those elements:

•         Reliability of sampling knowledge:

o    Drilling, sampling, pattern preparation, and assay procedures observe trade requirements.

o    Knowledge verification and validation work affirm drill gap pattern databases are dependable.

o    No vital biases have been noticed within the QA/QC evaluation outcomes.

•         Confidence in interpretation and modelling of geological and estimation domains:

o    Mineralization domains are interpreted manually in cross-sections and refined in longitudinal sections by an skilled useful resource geologist.

o    There may be good settlement between the drill holes and mineralization wireframe shapes

o    The mineralization wireframe shapes are properly outlined by pattern knowledge in areas labeled as Indicated.

•         Confidence in block grade estimates:

o    Indicated block grades correlate properly, spatially and statistically, with composite knowledge, each domestically and globally.

Blocks have been labeled as Indicated or Inferred primarily based on drill gap spacing, confidence within the geological interpretation, and obvious continuity of mineralization. All of the blocks throughout the HG domains and blocks throughout the MG area with obvious grade continuity from two or extra holes have been labeled as Indicated. For the LG grade area, blocks that didn’t meet the standards of grade x thickness (GT) higher than or equal to 1.0%*m have been faraway from the Mineral Useful resource reporting. All remaining blocks throughout the MG and LG domains have been assigned an Inferred class.

5.12.6

Any more moderen estimates or knowledge related to the reported mineralisation obtainable to the entity.

Milo, Ben Lomond, Coles Hill, Tony M, Daneros, Dieter Lake, Sage Plain, Matoush, Hurricane: No more moderen estimates have been accomplished or knowledge related to the reported mineralisation is out there.

Further technical data, derived primarily from exploration drilling, is restricted in scope and has no impression upon the Mineral Useful resource estimates.

5.12.7

The analysis and/or exploration work that must be accomplished to confirm the historic estimates or international estimates as Mineral Assets or Ore Reserves in accordance with Itemizing Guidelines Appendix 5A (JORC Code).

For all tasks, it’s famous that IsoEnergy isn’t required to reveal its Mineral Assets or Ore Reserve estimates in accordance with the JORC Code, as it’s a Canadian entity and isn’t admitted to the official checklist of ASX. Accordingly, there is no such thing as a current intention to undertake work for the needs of reporting IsoEnergy’s Mineral Useful resource estimates in accordance with the JORC Code.

Milo: The information would require evaluate and preparation of a Desk 1. The copper equal would require updating consistent with JORC 2012.

Ben Lomond: A considerable re-drilling / drilling marketing campaign can be required with the related work essential to report the useful resource in accordance with JORC (2012).

Coles Hill, Tony M: It’s anticipated that each one future Mineral Reserve and Mineral Useful resource estimates of IsoEnergy shall be ready in accordance with the then-prevailing Canadian Institute of Mining, Metallurgy and Petroleum Code and Canadian Nationwide Instrument NI 43- 101. Planning and scheduling of future work that could be required to advance the Mineral Assets from an historic classification to a present Mineral Useful resource, as outlined by the CIM Code, shall be performed as technical analysis of the undertaking is progressed.

“Offset drilling” of key drill holes within the Coles Hill North and Coles Hill South uranium deposits shall be required to verify the validity of the historic drill outcomes from the Marline Oil drilling program.

Solely a restricted drilling program can be required to confirm the Tony M sources underneath the JORC Code.

Daneros: Further work required to judge, affirm, and improve the historic Mineral Assets at Daneros would by rotary and core drilling to validate historic drilling data, and infill rotary and core drilling to check potential extensions to identified mineralized zones, and underground lengthy gap drilling.

Dieter Lake: The competent particular person of the unbiased geological consulting agency that IsoEnergy engaged in 2025 to replace the Dieter Lake historic international useful resource estimate to present NI43-101 and CIM requirements really helpful that historic drill gap knowledge verification shall be required – together with a go to to the property to confirm drill gap places and perform verification sampling. The property go to was performed in July 2025. Verification samples have been collected however helicopter points prevented conformation of drill gap collar places from being accomplished. The marketing consultant’s report is pending. There is no such thing as a current intention to report the estimate in accordance with the JORC Code (2012) version, as IsoEnergy isn’t presently required to adjust to this reporting code.

Sage Plain: Historic sources on the Sage Plain undertaking might be superior to “present” standing underneath the CIM Code by way of further rotary and core drilling applications. Any future Mineral Reserve and Mineral Useful resource estimates of IsoEnergy Restricted shall be ready in accordance with the then-prevailing Canadian Institute of Mining, Metallurgy and Petroleum Code and the context of Canadian Nationwide Instrument NI 43- 101.

Matoush: An analysis of the work required to confirm the historic, international mineral useful resource estimates as Mineral Assets or Ore Reserves in accordance with JORC 92012) code has not been performed.

Hurricane: An analysis of the work required to confirm the international mineral useful resource estimates as Mineral Assets or Ore Reserves in accordance with JORC (2012) code has not been performed.

5.12.8

The proposed timing of any analysis and/or exploration work that the entity intends to undertake and a touch upon how the entity intends to fund that work.

Milo: Additional drilling is deliberate to increase the useful resource. The entity can fund that work from current capital. Preliminary Reverse Circulation drill program of 1,000m being contemplated for Q2 2026.

Ben Lomond: Not presently deliberate.

Coles Hill: Drilling to verify the historic drill outcomes is but to be deliberate however shall be funded from current sources.

Tony M: Present work on the Tony M undertaking pertains to evaluation of technical matters which will have a bearing on future growth and operation of the Tony M mine. Such a piece program has not been scheduled. This work is being funded by way of IsoEnergy’s present finances.

Daneros: A affirmation drilling program on the Daneros undertaking has not but been scheduled. Future work on the Daneros undertaking can be funded by IsoEnergy’s current sources.

Deiter Lake: IsoEnergy has engaged an unbiased geological consulting agency to replace the historic Mineral Useful resource estimate to present NI43-101 and CIM requirements. It’s anticipated their report shall be acquired by December 31, 2025 however till their analysis of historic drill gap knowledge is full it’s unsure whether or not the Mineral Useful resource estimate shall be acquired in 2025.

Sage Plain: Exploration and affirmation drilling for the Sage Plain undertaking has not but been scheduled. Future actions on the Sage Plain undertaking shall be funded by way of IsoEnergy’s current sources.

Matoush: There is no such thing as a current intention to report the estimate in accordance with the JORC Code (2012) version, as IsoEnergy isn’t presently required to adjust to this reporting code.

Hurricane: There is no such thing as a current intention to report the estimate in accordance with the JORC Code (2012) version, as IsoEnergy isn’t presently required to adjust to this reporting code.

5.12.9

A cautionary assertion proximate to, and with equal prominence as, the reported historic estimates or international estimates stating that:

•       the estimates are historic estimates or international estimates
and should not reported in accordance with the JORC Code;

•       a reliable particular person has not performed enough work to categorise
the historic estimates or international estimates as Mineral Assets or Ore Reserves in accordance with the JORC Code; and

•       it’s unsure that following analysis and/or additional exploration work that the historic estimates or international estimates will be capable to be reported as Mineral Assets or Ore Reserves in accordance with the JORC Code.

A proximate cautionary assertion has additionally been included inside the primary physique of this announcement as required.

5.12.10

An announcement by a named competent particular person or individuals that the data available in the market announcement supplied underneath guidelines 5.12.2 to five.12.7 is an correct illustration of the obtainable knowledge and research for the fabric mining undertaking. The assertion should embrace the data referred to in rule 5.22(b) and (c).

The knowledge on this announcement supplied underneath ASX Itemizing Guidelines 5.12.2 to five.12.7 is an correct illustration of the obtainable knowledge and research for the IsoEnergy tasks and has been reviewed by the competent particular person or individuals named under.

Milo, Ben Lomond: Peter James Mullens. Peter James Mullens is an worker of IsoEnergy and a fellow of the Australian Institute of Mining and Metallurgy. Mr Mullens consents to the inclusion on this launch of the issues primarily based on that data within the kind and context wherein it seems.

Daneros, Sage Plain, Coles Hill, Tony M: Dean T. Wilton. Dean T Wilton is a marketing consultant to IsoEnergy, a member of the Australian Institute of Skilled Geoscientists and a Licensed Skilled Geologist as designated by the American Institute of Skilled Geologists. Mr Wilton consents to the inclusion on this launch of the issues primarily based on that data within the kind and context wherein it seems.

Dieter Lake, Matoush, Hurricane: Daniel Brisbin. Daniel Brisbin is an worker of IsoEnergy and a member of Affiliation of Skilled Engineers and Geoscientists of Saskatchewan. Mr Brisbin consents to the inclusion on this launch of the issues primarily based on that data within the kind and context wherein it seems.