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ST GEORGE MINING LIMITED Capital/Financing Update 2025

Nov 23, 2025

65782_rns_2025-11-23_4802465f-e1ea-4138-8ef3-1c878bbdd4a4.pdf

Capital/Financing Update

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ASX RELEASE.
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24 November 2025

ASSAYS CONTINUE TO EXPAND THE WORLD-CLASS HIGH-GRADE RARE EARTHS AND NIOBIUM DEPOSIT AT THE ARAXÁ PROJECT

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  • Exceptional thick, high-grade rare earths and niobium from surface: Assays for a further six diamond drill holes have been received and confirm consistent high-grade mineralisation[1] :

  • 80.55m @ 5.44% TREO and 0.60% Nb₂O₅ from surface in AXDD009 including:32.3m @ 9.13% TREO and 0.75% Nb₂O₅ from surface

  • 80.45m @ 5.19% TREO and 0.58% Nb₂O₅ from surface in AXDD008 including :20.4m @ 7.13% TREO and 0.77% Nb₂O₅ from 56.6m

  • 100.8m @ 3.53% TREO and 0.43% Nb₂O₅ from surface in AXDD011 including :27m @ 4.66% TREO and 0.41% Nb₂O₅ from 17m

  • 101.75m @ 2.72% TREO and 0.49% Nb₂O₅ from surface in AXDD005 including :23m @ 3.62% TREO and 0.70% Nb₂O₅ from 34m

  • 81.4m @ 3.23% TREO and 0.49% Nb₂O₅ from surface in AXDD006 including : • 17.15m @ 3.68% TREO and 0.50% Nb₂O₅ from 30m

  • 105m @ 3.27% TREO and 0.51% Nb₂O₅ from surface in AXDD010 including :67m @ 3.98% TREO and 0.59% Nb₂O₅ from surface

  • Expansion of Mineral Resource Estimate (MRE) – already world-class with 40.6Mt @ 4.13% TREO[2] : AXDD005, AXDD010 and AXDD011 were step-out holes drilled outside the envelope of the existing MRE and support a potential large expansion of the MRE – already the largest and highest-grade carbonatite-hosted REE resource in South America and second-highest grade REE resource in the Western world.

  • Upgrade of MRE to indicated category: AXDD006, AXDD008 and AXDD009 were resource definition holes and support a potential high level of conversion of inferred resources in the MRE to the indicated category.

  • Drilling continues 24/7 with mineralisation open in all directions: An additional 29 diamond drill holes have been submitted to the laboratory with assays pending, and a further 40 diamond drill holes are planned in the current campaign with three diamond drill rigs on site.

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  1. See Tables 1 and 2 for details of the latest drill holes and assays.

  2. See Table 3 and our ASX Release dated 1 April 2025 ‘High-Grade Niobium and REE JORC Resource for Araxá’ for more information on the Mineral Resource Estimate

ST GEORGE MINING LIMITED ACN 139 308 973 Suite 2, Level 2, 28 Ord Street West Perth WA 6005 | PO Box 100 West Perth WA 6872 www.stgeorgemining.com.au | Phone +61 8 6118 2118

ASX RELEASE. Page 2 of 10

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St George Mining Limited ( ASX: SGQ ) (“ St George ” or the “ Company ”) is pleased to report further exceptional assay results from diamond drilling at its 100%-owned Araxá Rare Earths and Niobium Project in Minas Gerais, Brazil.

John Prineas, St George Mining’s Executive Chairman, said:

“These drilling results are exceptional and highlight the unrivalled quality of the thick, high-grade mineralisation at our Araxá Project. Significantly, the mineralisation remains open laterally in all directions and at depth.

“All resource expansion holes and resource definition holes have demonstrated consistent continuity and grade, giving us confidence that this drill campaign will transform the scale of the MRE, redefine the value of our company and further position St George as one of the leaders in the rare earths and niobium sectors.

“With three drill rigs continuously drilling and many drill samples already in the lab, we look forward to reporting more exciting drill results over the coming weeks.”

World-class deposit continues to expand

The latest diamond drilling results have successfully expanded the footprint of the Araxá mineralisation, confirming the three-dimensional continuity of high-grade rare earths and niobium deposit.

The results demonstrate that Araxá’s mineralised system is open-ended, with ongoing drilling expected to deliver further expansions to the volume of the deposit. Twenty-nine drill holes are in the ALS laboratory awaiting assay analysis and a further forty drill holes are planned to be completed by the three drill rigs at site.

The successful drilling to date – combined with the drilling to be reported and completed – provide confidence in the potential for a substantial resource upgrade.

AXDD005 was drilled 145m to the west of the existing MRE and – like AXDD001 (drilled 230m west of the MRE) and AXDD002 (drilled 150m west of the MRE) – has confirmed a substantial strike extension of the Araxá deposit.

The resource definition drilling has also delivered excellent results by confirming the scale and continuity of the high-grade mineralisation. This will support the conversion of inferred resources to the indicated category, underpinning the economic study into a potential mining operation at Araxá.

AXDD008 and AXDD009 were drilled in the northern part of the MRE, an area with very little drilling and defined as inferred resources. The thick, high-grade rare earths and niobium returned by the assays for these holes confirms the continuity of the mineralisation and will likely support the definition of significant indicated resources in this area.

Peak grades in the assay results are 22.5% TREO and 3.7% Nb₂O₅, illustrating the very high-grades at the carbonatite hosted deposit at Araxá – the same style of mineralisation as the two largest rare earths producers outside of China, Mountain Pass in California and Mt Weld in Western Australia.

The mineralised material in the latest drilling contains a high proportion of magnet rare earths – around 20% NdPr:TREO ratio – consistent with ratio in the existing MRE.

ASX RELEASE. Page 3 of 10

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Figure 1 – oblique section showing the latest diamond drill holes as well as other significant drilling completed in the current campaign. The latest drill holes have red labels.

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Figure 2 – section showing high-grade TREO intercepts (cut-off 1% TREO) and high-grade Nb2O5 intercepts (cutoff 0.2% Nb2O5) along with the existing MRE outline. The section highlights both the westward expansion of the existing resource and the recent resource definition drilling.

ASX RELEASE. Page 4 of 10

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Figure 3 – section showing high-grade TREO intercepts (cut-off 1% TREO) and high-grade Nb2O5 intercepts (cutoff 0.2% Nb2O5) along with the existing MRE outline illustrating both the extension of mineralisation to the west and the resource definition drilling

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Figure 4 – plan view map of Araxá area showing the location of the diamond drilling relative to the MRE, and the sections in Figures 2 and 3 above.

ASX RELEASE. Page 5 of 10

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Table 1 – drill hole details for the diamond holes reported in this announcement.

HOLE_ID EASTING NORTHING ELEVATION DEPTH DIP AZI
AXDD005 296361.06 7826415.08 1012.47 101.75 -90 0
AXDD006 296612.91 7826623.17 1046.69 81.40 -90 0
AXDD008 296693.74 7826618.59 1046.87 80.45 -90 0
AXDD009 296657.3 7826660.4 1051.2 80.55 -90 0
AXDD010 296448.37 7826463.76 1017.84 105.00 -90 0
AXDD011 296460.18 7826384.72 1042.6 100.80 -90 0

Table 2 – List of significant intercepts from diamond drilling (cut-off grade of 1% TREO)

HOLEID From To Interval TREO% MREO% NdPr:TREO Nb2O5%
AXDD005 0 101.75 101.75 @ 2.72 0.56 20 0.49
AXDD005 0 7 7 Incl. 3.53 0.75 21 0.44
AXDD005 4.35 5 0.65 Incl. 5.10 0.95 18 0.27
AXDD005 6.1 7 0.9 Incl. 6.44 1.33 20 0.35
AXDD005 10 18 8 Incl. 4.99 1.14 23 0.76
AXDD005 10.6 11 0.4 Incl. 5.25 1.06 20 1.22
AXDD005 13.45 18 4.55 Incl. 6.01 1.35 23 0.60
AXDD005 19 32.3 13.3 Incl. 3.79 0.71 19 0.71
AXDD005 21.1 23.45 2.35 Incl. 5.37 0.97 18 1.24
AXDD005 34 57 23 Incl. 3.62 0.75 21 0.70
AXDD005 35 36.1 1.1 Incl. 3.68 0.66 18 0.46
AXDD005 39.1 40 0.9 Incl. 2.03 0.38 18 0.47
AXDD005 40.6 44 3.4 Incl. 5.34 1.07 20 2.01
AXDD005 42.1 43 0.9 Incl. 7.37 1.34 18 3.14
AXDD005 42.1 44 1.9 Incl. 6.38 1.21 19 2.36
AXDD005 45 46.55 1.55 Incl. 2.48 0.54 21 0.32
AXDD005 47.3 48 0.7 Incl. 12.05 2.31 26 0.18
AXDD005 47.3 49.6 2.3 Incl. 8.47 1.95 23 0.21
AXDD005 50.45 51 0.55 Incl. 5.62 1.03 18 1.23
AXDD005 53 54.2 1.2 Incl. 6.50 1.18 18 1.55
AXDD005 55 56 1 Incl. 6.64 1.06 16 0.81
AXDD005 58.3 78 19.7 Incl. 2.00 0.39 19 0.34
AXDD005 81 85 4 Incl. 2.90 0.52 18 0.66
AXDD005 86 88 2 Incl. 2.50 0.54 22 0.62
AXDD005 101 101.75 0.75 Incl. 2.79 0.60 21 0.12
AXDD006 0 81.4 81.4 @ 3.23 0.61 17 0.41
AXDD006 0 12 12 Incl. 5.49 1.04 19 0.42
AXDD006 2 4.69 2.69 Incl. 10.10 1.90 19 0.29
AXDD006 3 4 1 Incl. 12.10 2.22 18 0.16
AXDD006 5.65 6 0.35 Incl. 6.09 1.28 21 0.16
AXDD006 8 9 1 Incl. 6.71 1.27 19 0.18
AXDD006 14 29 15 Incl. 3.76 0.75 20 0.44
AXDD006 19 21 2 Incl. 7.20 1.25 17 0.46

ASX RELEASE.

Page 6 of 10

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AXDD006 28.72 29 0.28 Incl. 6.62 0.95 14 0.22
AXDD006 30 47.15 17.15 Incl. 3.68 0.65 18 0.50
AXDD006 31.58 31.9 0.32 Incl. 6.05 1.09 18 0.33
AXDD006 33.05 34 0.95 Incl. 5.50 0.88 16 0.07
AXDD006 35 40.15 5.15 Incl. 3.87 0.67 18 0.45
AXDD006 36 36.75 0.75 Incl. 5.93 0.89 15 0.38
AXDD006 43.85 44.15 0.3 Incl. 5.25 0.84 16 0.11
AXDD006 45 45.8 0.8 Incl. 5.80 0.94 16 0.60
AXDD006 54.6 62 7.4 Incl. 4.61 0.80 18 0.73
AXDD006 54.6 56.3 1.7 Incl. 6.66 1.06 16 0.97
AXDD006 58.6 59.5 0.9 Incl. 5.24 0.92 17 1.10
AXDD006 61.15 62 0.85 Incl. 5.28 0.98 18 0.21
AXDD006 75.65 81 5.35 Incl. 3.17 0.62 20 0.33
AXDD008 0 80.45 80.45 @ 5.19 0.94 18 0.58
AXDD008 0 16 16 Incl. 4.91 0.89 18 0.55
AXDD008 0 1 1 Incl. 5.25 0.91 17 1.02
AXDD008 4 5 1 Incl. 5.88 0.94 16 0.69
AXDD008 9 11 2 Incl. 7.25 1.23 17 0.39
AXDD008 13 16 3 Incl. 7.89 1.39 17 0.59
AXDD008 17 24.1 7.1 Incl. 4.51 0.84 19 0.50
AXDD008 21 23 2 Incl. 7.62 1.31 17 0.41
AXDD008 25 36 11 Incl. 4.94 0.89 18 0.62
AXDD008 25 26 1 Incl. 7.85 1.35 17 0.76
AXDD008 29 30 1 Incl. 7.35 1.23 17 0.69
AXDD008 32.55 34 1.45 Incl. 8.25 1.41 17 0.64
AXDD008 35 36 1 Incl. 5.17 0.87 17 0.62
AXDD008 37 41 4 Incl. 10.03 2.00 20 0.15
AXDD008 37 38 1 Incl. 15.41 2.86 18 0.11
AXDD008 43 55.7 12.7 Incl. 4.07 0.70 17 0.44
AXDD008 48 49 1 Incl. 5.84 1.00 17 0.22
AXDD008 54 55.7 1.7 Incl. 6.47 1.08 16 0.38
AXDD008 56.6 77 20.4 Incl. 7.13 1.26 18 0.77
AXDD008 59 69 10 Incl. 8.39 1.44 17 0.69
AXDD008 67 68 1 Incl. 14.26 2.48 17 1.29
AXDD008 69.5 75 5.5 Incl. 8.07 1.45 18 0.91
AXDD009 0 80.55 80.55 @ 5.44 1.02 18 0.60
AXDD009 0 32.3 32.3 Incl. 9.13 1.60 18 0.75
AXDD009 5 6 1 Incl. 22.55 3.79 17 0.06
AXDD009 14 21 7 Incl. 11.25 1.96 18 0.35
AXDD009 22 25 3 Incl. 7.58 1.24 16 1.57
AXDD009 27 32 5 Incl. 7.61 1.36 18 1.33
AXDD009 33 40.8 7.8 Incl. 3.58 0.77 21 0.56
AXDD009 34 35 1 Incl. 6.19 1.32 21 0.35
AXDD009 42.6 49.55 6.95 Incl. 4.12 0.85 20 0.89
AXDD009 43 44 1 Incl. 5.71 1.34 23 0.92

ASX RELEASE.

Page 7 of 10

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AXDD009 48 49.55 1.55 Incl. 6.18 1.18 19 1.62
AXDD009 50.6 57.2 6.6 Incl. 2.66 0.57 21 0.54
AXDD009 58 80.55 22.55 Incl. 3.48 0.74 21 0.48
AXDD009 58 58.85 0.85 Incl. 5.05 1.14 22 0.29
AXDD009 68 69 1 Incl. 6.02 1.04 17 0.36
AXDD009 78 79 1 Incl. 6.32 1.28 20 0.65
AXDD009 79 80.55 1.55 Incl. 3.62 0.80 21 0.62
AXDD010 0 105 105 @ 3.27 0.69 22 0.51
AXDD010 0 67 67 Incl. 3.98 0.84 21 0.59
AXDD010 16 17 1 Incl. 6.76 1.14 17 0.51
AXDD010 19 20 1 Incl. 6.70 1.19 18 0.34
AXDD010 23 24 1 Incl. 7.73 1.33 17 0.76
AXDD010 30.5 43 12.5 Incl. 5.46 1.09 20 0.51
AXDD010 34 37 3 Incl. 7.11 1.34 19 0.45
AXDD010 40.75 43 2.25 Incl. 7.59 1.56 20 0.69
AXDD010 46 48 2 Incl. 6.14 1.10 18 0.56
AXDD010 49 49.75 0.75 Incl. 7.32 1.63 22 0.61
AXDD010 51 52 1 Incl. 12.20 2.37 19 3.77
AXDD010 52 52.75 0.75 Incl. 14.28 2.46 17 3.66
AXDD010 56.6 57.25 0.65 Incl. 7.99 1.58 20 0.22
AXDD010 58 59 1 Incl. 8.88 2.31 26 0.18
AXDD010 63 64 1 Incl. 5.67 1.35 23 0.80
AXDD010 67.75 75.8 8.05 Incl. 3.50 0.71 21 0.55
AXDD010 67.75 68.55 0.8 Incl. 5.19 0.97 19 0.51
AXDD010 71 71.3 0.3 Incl. 9.39 1.76 18 0.22
AXDD010 75 75.8 0.8 Incl. 6.72 1.27 19 0.96
AXDD010 77 85 8 Incl. 2.78 0.57 20 0.39
AXDD010 86 93.95 7.95 Incl. 1.86 0.42 23 0.39
AXDD010 97 97.75 0.75 Incl. 1.03 0.22 21 0.26
AXDD010 99 100 1 Incl. 1.23 0.25 20 0.19
AXDD010 101 102.25 1.25 Incl. 1.24 0.23 19 0.25
AXDD011 0 100.8 100.8 @ 3.53 0.66 19 0.43
AXDD011 0 7 7 Incl. 6.19 1.16 19 0.91
AXDD011 8 12 4 Incl. 8.44 1.36 16 1.36
AXDD011 10 10.8 0.8 Incl. 10.92 1.59 14 1.40
AXDD011 13 14 1 Incl. 7.29 1.49 20 0.99
AXDD011 17 44 27 Incl. 4.66 0.84 19 0.41
AXDD011 22 24 2 Incl. 5.79 1.04 18 0.39
AXDD011 29 30 1 Incl. 5.09 0.86 17 0.28
AXDD011 35 39.75 4.75 Incl. 8.38 1.25 15 0.36
AXDD011 37 38 1 Incl. 10.86 1.55 14 0.43
AXDD011 46 56 10 Incl. 3.33 0.66 20 0.44
AXDD011 66 69 3 Incl. 3.34 0.64 19 0.47
AXDD011 71 71.75 0.75 Incl. 6.97 1.34 19 0.30
AXDD011 93 99.8 6.8 Incl. 3.16 0.58 18 0.36

ASX RELEASE. Page 8 of 10

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About the Araxá Project:

St George acquired 100% of the Araxá Project on 27 February 2025. Araxá is a de-risked, world-class rare earths and niobium project in Minas Gerais, Brazil, located adjacent to CBMM’s world-leading niobium mining operations.

The region around the Araxá Project has a long history of commercial niobium production and provides access to infrastructure and a skilled workforce.

St George has negotiated government support for expedited project approvals, assembled a highly experienced in-country team and established relationships with key parties and authorities in Brazil to drive the Project through exploration work and development studies.

St George has been selected to participate in the Federal Government’s MAGBRAS Initiative – a program aimed at establishing an integrated and sustainable rare earth products supply chain including the production of permanent magnets entirely within Brazil.

These relationships underscore St George’s strategy to integrate with the Brazilian government and business sectors, as well as the local community, to support unified and smooth progress in the development of the Araxá Project.

On 1 April 2025, St George announced a maiden resource for the Project, which represents both a globally significant niobium and rare earths resource as shown in Table 3 below:

Niobium – total resource:

41.2 Mt at 0.68% Nb₂O₅ (6,800ppm Nb2O5) comprising (at a cut-off of 0.2% Nb₂O₅) :

Resource Classification Million Tonnes (Mt) Nb₂O₅ (%)
Measured 1.90 1.19
Indicated 7.37 0.93
Inferred 31.93 0.59
Total 41.20 0.68

Rare earths – total resource:

40.6 Mt at 4.13% TREO (41,300ppm TREO) comprising (at a cut-off of 2% TREO):

Resource Classification Million Tonnes (Mt) TREO (%) MREO (%)
Measured 1.90 5.44 1.04
Indicated 7.37 4.76 0.90
Inferred 31.37 3.90 0.74
Total 40.64 4.13 0.78

ASX RELEASE.

Page 9 of 10

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Authorised for release by the Board of St George Mining Limited.

John Prineas Peter Klinger
Executive Chairman Media and Investor Relations
St George Mining Purple
+61 411 421 253 +61 411 251 540
[email protected] [email protected]

Competent Person Statement – Mineral Resource Estimate

Mr. Beau Nicholls: The information in this ASX Release that relates to Mineral Resource Estimate and historical/foreign results is based upon, and fairly represents, information and supporting documentation reviewed and compiled by Mr. Beau Nicholls, a Competent Person who is a Fellow of The Australian Institute of Geoscientists. Mr Nicholls is the Principal Consultant of EM2 Ltd (Sahara), an independent consultancy engaged by St George Mining Limited for the review of historical data and preparation of the Mineral Resource Estimate for the Araxá Niobium & Rare Earth Project under the JORC guidelines of 2012. Mr Nicholls has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity being undertaken to qualify as a Competent Person as defined in the 2012 edition of the "Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves".

Mr. Leandro Silva: The information in this ASX Release that relates to Mineral Resource Estimate is based upon, and fairly represents, information and supporting documentation reviewed and compiled by Mr Leandro Silva, a Competent Person who is Member of The Australian Institute of Geoscientists. Mr Silva is the Consulting Geologist of EM2 Ltd (Sahara), an independent consultancy engaged by St George Mining Limited for the review of historical data and preparation of the Mineral Resource Estimate for the Araxá Niobium & Rare Earth Project under the JORC guidelines of 2012. Mr Silva has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity being undertaken to qualify as a Competent Person as defined in the 2012 edition of the "Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves"

This ASX announcement contains information related to the following reports which are available on the Company’s website at www.stgm.com.au:

  • 1 April 2025 Maiden High-Grade Niobium and Rare Earth Resource Estimate for the Araxá Project, Brazil

The Company confirms that it is not aware of any new information or data that materially affects the Mineral Resource Estimates included in any original market announcements referred to in this report and that all material assumptions and technical parameters underpinning the Mineral Resource Estimates continue to apply and have not materially changed. The Company confirms that the form and context in which the Competent Person’s findings are presented have not been materially modified from the original market announcements.

Competent Person Statement – Exploration Results

The information in this ASX Release that relates to historical and foreign results is based upon, and fairly represents, information and supporting documentation reviewed by Mr. Carlos Silva, Senior Geologist employed by GE21 Consultoria Mineral and a Competent Person who is a Member of The Australian Institute of Geoscientists. GE21 is an independent consultancy engaged by St George Mining Limited for the review of historical exploration data. Mr Silva has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity being undertaken to qualify as a Competent Person as defined in the 2012 edition of the "Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves".

ASX RELEASE. Page 10 of 10

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Competent Person Statement:

The information in this report that relates to Exploration Targets, Exploration Results, Mineral Resources or Ore Reserves for the Araxá Project is based on information compiled by Mr Wanderly Basso, a Competent Person who is a Member of The Australasian Institute of Geoscientists. Mr Basso is employed by St George Mining Limited to provide technical advice on mineral projects, and he holds performance rights issued by the Company.

Mr Basso has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity being undertaken to qualify as a Competent Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’. Mr Basso consents to the inclusion in the report of the matters based on his information in the form and context in which it appears.

Forward Looking Statements:

This announcement includes forward-looking statements that are only predictions and are subject to known and unknown risks, uncertainties, assumptions and other important factors, many of which are beyond the control of St George, the directors and the Company’s management. Such forward-looking statements are not guarantees of future performance.

Examples of forward-looking statements used in this announcement include use of the words ‘may’, ‘could’, believes’, estimates’, targets’, ‘expects’, or ‘intends’ and other similar words that involve risks and uncertainties. These statements are based on an assessment of present economic and operating conditions, and on a number of assumptions regarding future events and actions that, as at the date of the announcement, are expected to take place.

Actual values, results, interpretations or events may be materially different to those expressed or implied in this announcement. Given these uncertainties, recipients are cautioned not to place reliance on forward-looking statements in the announcement as they speak only at the date of issue of this announcement. Subject to any continuing obligations under applicable law and the ASX Listing Rules, St George does not undertake any obligation to update or revise any information or any of the forward-looking statements in this announcement or any changes in events, conditions or circumstances on which any such forward-looking statement is based.

This announcement has been prepared by St George Mining Limited and contains background Information about St George Mining Limited current at the date of this announcement. The announcement is in summary form and does not purport to be all inclusive or complete. Recipients should not rely upon it as advice for investment purposes, as it does not take into account your investment objectives, financial position or needs. These factors should be considered, with or without professional advice, when deciding if an investment is appropriate.

The announcement is for information purposes only. Neither this announcement nor the information contained in it constitutes an offer, invitation, solicitation or recommendation in relation to the purchase or sale of shares in any jurisdiction. The announcement may not be distributed in any jurisdiction except in accordance with the legal requirements applicable in such jurisdiction. Recipients should inform themselves of the restrictions that apply to their own jurisdiction as a failure to do so may result in a violation of securities laws in such jurisdiction.

This announcement does not constitute investment advice and has been prepared without taking into account the recipient’s investment objectives, financial circumstances or particular needs and the opinions and recommendations in this announcement are not intended to represent recommendations of particular investments to particular person.

Recipients should seek professional advice when deciding if an investment is appropriate. All securities transactions involve risks, which include (among others) the risk of adverse or unanticipated market, financial or political developments. To the extent permitted by law, no responsibility for any loss arising in any way (including by way of negligence) from anyone acting or refraining from acting as a result of this material is accepted by St George Mining Limited (including any of its related bodies corporate), its officers, employees, agents and advisers.

– Ends –

The following section is provided for compliance with requirements for the reporting of exploration results under the JORC Code, 2012 Edition.

Section 1 Sampling Techniques and Data

(Criteria in this section apply to all succeeding sections)

Criteria JORC Code explanation Commentary
Sampling Nature and quality of sampling (eg cut Drilling programme completed by Diamond (DD) Drilling
techniques 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.
Diamond Core Sampling: The sections of the core that are selected for
assaying are marked up and then recorded on a sample sheet for
cutting and sampling at the certified assay laboratory. Samples of HQ,
NQ2, HTW or NTW core are cut just to the right of the orientation line
where available, using a diamond core saw, with half core sampled
lengthways for assay.
Appropriate QAQC samples (standards, blanks and duplicates) are
inserted into the sequences as per industry best practice for all samples
collected in the different drilling methods.
Include reference to measures taken to ensure Diamond Core Sampling: For diamond core samples, blank samples are
sample representivity and the appropriate inserted in the first position of the batch and every 20th sample after
calibration of any measurement tools or that, a duplicate sample is taken every 20th sample. A certified sample
systems used. standard for niobium and REE is also added according to geology, but
at no more than 1:20 samples. Core recovery calculations are made
through a reconciliation of the actual core and the driller’s records.
For all drilling methods, the number of samples per batch varies
between 30 to 50 samples.
A percentage of the samples will be selected to be assayed by the same
method by a different laboratory for umpire checks.
The drill-hole collar locations are recorded using a handheld GPS and
after completion the final drill hole location will be recorded using a
high-precision RTX station which as expected accuracy of +/- 4cm.
Geological logging of core is completed at site with core being stored
for future reference.
Aspects of the determination of mineralisation Diamond Core Sampling: Diamond core (both HTW, NTW, HQ and
that are Material to the Public Report. NQ2) are half-core sampled to geological boundaries with an average
In cases where ‘industry standard’ work has
been done this would be relatively simple (eg
sample size of 1 meter. A minimum size of 20 cm and maximum of
1.2m. 95% of samples are expected to be less or equal than 1 metre.
‘reverse circulation drilling was used to obtain The samples are prepared by the laboratory according to the following
1 m samples from which 3 kg was pulverised procedure:
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
Whole samples drying and weighing, crushing of sample to -2mm
followed by homogenization and splitting to a 250g sub-sample.
Samples pulverization to 85% passing 75 micron and splitting of
pulverized material to 50-gram pulp.
submarine nodules) may warrant disclosure of Elements for all suites go through the following analytical method:
detailed information. Elements are analysed by ALS Laboratories using Lithium Metaborate
fusion and an ICP-MS/AES finish. These elements are: La2O3, CeO2,
Pr6O11, Nd2O3, Sm2O3, Eu2O3, Gd2O3, Tb4O7, Dy2O3, Lu2O3,
Ho2O3, Er2O3, Y2O3, Yb, Tm2O3, Nb2O5, Hf, Rb, Sn, Ta, Th, U, V, W,
Zr, Sc, SiO2, Na2O, P2O5, Al2O3, K2O, SrO, Fe2O3, Cr2O3, BaO, CaO,
TiO2, MgO, MnO and LOI.
Elements are analysed by SGS Laboratories using Lithium Metaborate
fusion and an ICP-MS/XRF finish. These elements are: La2O3,CeO2,

1

Criteria JORC Code explanation Commentary
Pr6O11, Nd2O3, Sm2O3, Eu2O3, Gd2O3, Tb4O7, Dy2O3, Lu2O3,
Ho2O3, Er2O3, Y2O3, Yb, Tm2O3, Nb2O5, Hf, Rb, Sn, Ta, Th, U, V, W,
Zr, Sc, SiO2, Na2O, P2O5, Al2O3, K2O, SrO, Fe2O3, Cr2O3, BaO, CaO,
TiO2, MgO, MnO and LOI.
Due to the high-grade nature of the deposit, assays results that are
reported above the upper detection limit for the methods above
mentioned will be subject to determination by XRF finish.
Prior to be analysed by the methods above mentioned, the samples will
be analysed using a Sciapps X555 portable XRF, the results obtained
from the portable XRF analyses are indicative only and will only be used
as preliminary indication of mineralisation occurrences and for the
purposes of geological interpretation.
Drilling Drill type (eg core, reverse circulation, open- Drilling programme were be completed by Diamond Drilling (DD).
techniques hole hammer, rotary air blast, auger, Bangka,
sonic, etc) and details (eg core diametre, 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).
Diamond Core Sampling: The diamond holes are drilled from surface
through the regolith to planned depth using a either a HTW, NTW, HQ
or NQ2 diameter, subject to ground and geological conditions, triple-
tube core barrels will be used whenever possible to preserve sample
integrity.
Drill sample Method of recording and assessing core and Diamond Core Sampling: Diamond core recoveries are recorded during
recovery chip sample recoveries and results assessed. drilling and reconciled during the core processing and geological
logging. The core length recovered is measured for each run and
recorded which is used to calculate core recovery as a percentage
Measures taken to maximise sample recovery Diamond Drilling: Measures taken to maximise core recovery include
and ensure representative nature of the using appropriate core diameter and shorter barrel length through
samples. the weathered zone. Primary locations for core loss in fresh rock are
on geological contacts and structural zones, and drill techniques are
adjusted accordingly, and if possible, these zones are predicted from
the geological modelling.
Whether a relationship exists between sample To date, no sample recovery issues have been identified that could
recovery and grade and whether sample bias introduce bias in the sampling methods.
may have occurred due to preferential
loss/gain of fine/coarse material.
Logging Whether core and chip samples have been Logging of samples records lithology, mineralogy, mineralisation,
geologically and geotechnically logged to a alteration, structures (when possible), weathering, colour and other
level of detail to support appropriate Mineral noticeable features to a level of detail to support appropriate Mineral
Resource estimation, mining studies and Resource estimation.
metallurgical studies.
Whether logging is qualitative or quantitative The logging is both qualitive and quantitative in nature, with sample
in nature. Core (or costean, channel, etc) recovery and volume being recorded. All core trays are photographed
photography. in sequence.
The total length and percentage of the All drill holes are geologically logged in full. The data relating to the
relevant intersections logged. elements analysed is later used to determine further information
regarding the detailed rock composition.
Detailed litho-geochemical information is collected by the portable XRF
unit to help with lithological identification and geological
interpretation.
Sub-sampling If core, whether cut or sawn and whether Diamond core are drilled with HTW, HQ and NQ2 size and sampled as
techniques and quarter, half or all core taken. complete half core to produce a bulk sample for analysis. Intervals
sample selected varied from 0.25 – 1.25m (maximum) where 5% of samples
preparation are expected to be less or equal than 1 metre. The HTW, HQ and NQ2
core is cut in half length ways using a diamond core saw. All samples
are collected from the same side of the core where practicable.

2

Criteria JORC Code explanation
Commentary
If non-core, whether riffled, tube sampled,
rotary split, etc and whether sampled wet or
dry.
Only diamond core holes reported.
For all sample types, the nature, quality and
appropriateness of the sample preparation
technique.
Assay preparation procedures follow a standard protocol which include
drying and weighing of whole sample, samples are then crushed to -
2mm size. Sample homogenization and splitting to a 250g sub-sample.
Pulverization to 85% passing 75 micron and splitting of pulverized
material to 50-gram pulp.
Quality control procedures adopted for all
sub-sampling stages to maximise
representivity of samples.
Quality control procedures include submission of Certified Reference
Materials (standards), duplicates and blanks
Diamond Core Sampling: Drill core is cut in half lengthways and the
total half-core submitted as the sample. This meets industry standards
where 50% of the total sample taken from the diamond core is
submitted. QC procedures maximise representivity of diamond core
and involve the use of certified reference material as assay standards,
along with blanks and duplicates with each sample batch.
QAQC results are routinely reviewed to identify and resolve any issues,
eventual failed batches are re-analysed.
A percentage of the global samples are selected to be assayed by the
same method by a different laboratory for umpire checks.
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.
Diamond drilling: Duplicate samples comprise half core samples for
Diamond Core.
Whether sample sizes are appropriate to the
grain size of the material being sampled.
The sample sizes are considered to be appropriate to correctly
represent type and style of mineralisation and associated geology
based on the deposit style (supergene deposit), the thickness and
consistency of the intersections and the sampling methodology.
Quality of
assay data and
laboratory
tests
The nature, quality and appropriateness of
the assaying and laboratory procedures used
and whether the technique is considered
partial or total.
The assay method and detection limits are appropriate for analysis of
the elements required.
For
geophysical
tools,
spectrometres,
handheld
XRF
instruments,
etc,
the
parametres used in determining the analysis
including instrument make and model,
reading times, calibrations factors applied and
their derivation, etc.
XRF: A handheld XRF instrument (Sciapps X555) is used to
systematically analyse the drill core, auger and RC sample piles onsite.
One reading is taken per half-metre, however for any core samples
with expected mineralisation then multiple samples are taken at set
intervals. The instruments are serviced and calibrated at least once a
year following the manufacturer protocol. Field calibration of the XRF
instrument using standards is periodically performed (usually daily).
The handheld XRF results are only used for preliminary assessment and
reporting of element compositions, prior to the receipt of assay results
from the certified laboratory.
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.
Laboratory QAQC involves the use of internal lab standards using
certified reference material (CRMs), blanks, umpire assays and pulp
duplicates as part of in-house procedures.
The Company also submits a suite of CRMs, blanks, umpire assays and
selects appropriate samples for duplicates. Company’s QAQC protocols
are expected to be collected at an overall rate of 16%. Blank samples
represent 4% of the database; duplicates, 4%; umpire checks, 4%; and
certified reference materials, for niobium and REE, has an expected 4%
insertion rate in the program.

3

Criteria JORC Code explanation Commentary
Verification of The verification of significant intersections by Significant intersections and assays are verified by the Company’s
sampling and either independent or alternative company Technical Director and Consulting Geologist.
assaying personnel.
The use of twinned holes. No drill holes are twinned.
Documentation of primary data, data entry Primary data is captured onto a laptop using acQuire software and
procedures, data verification, data storage includes geological logging, sample data and QA/QC information. This
(physical and electronic) protocols. data, together with the assay data, is entered into the St George Mining
central SQL database which is managed by external consultants.
Discuss any adjustment to assay data. No adjustments or calibrations will be made to any primary assay data
collected for the purpose of reporting assay grades and mineralised
intervals.
For geological analysis recognised calculations may be used to
demonstrate mineralisation potential for one or more elements of
interest, such as demonstrate below:
TREO (Total Rare Earth Oxides) calculations include the summation of
the following elements: La2O3 + CeO2 + Pr6O11 + Nd2O3 + Sm2O3 +
Eu2O3 + Gd2O3 + Tb4O7 + Dy2O3 + Lu2O3 + Ho2O3 + Er2O3 + Y2O3 +
Yb2O3
MREO (Magnetic Rare Earth Oxides) calculations include the
summation of the following elements: Pr6O11+ Nd2O3+ Tb4O7+
Dy2O3
HREO (Heavy Rare Earth Oxides) calculations include the summation of
the following elements: Eu2O3 + Gd2O3 + Tb4O7 + Dy2O3 + Lu2O3 +
Ho2O3 + Er2O3 + Y2O3 + Yb2O3
NdPr:TREO (NdPr Ratio) calculation include the summation of Pr6O11
+ Nd2O3 divided by TREO (Total Rare Earth Oxides) which is the
summation of following elements: La2O3 + CeO2 + Pr6O11 + Nd2O3 +
Sm2O3 + Eu2O3 + Gd2O3 + Tb4O7 + Dy2O3 + Lu2O3 + Ho2O3 + Er2O3
+ Y2O3 + Yb2O3
Location of Accuracy and quality of surveys used to locate Drill holes have been located and pegged using a Handheld GPS system
data points drill holes (collar and down-hole surveys), with an expected accuracy of +/-5m for easting, northing and elevation.
trenches, mine workings and other locations Upon completion of drilling the holes were recorded using a high-
used in Mineral Resource estimation. precision RTX Trimble Catalyst DA2 GNSS station which as expected
accuracy of +/- 4cm.
Downhole surveys are conducted using a downhole Gyro with reading
of 5m intervals after drilling is complete to record deviations of the hole
from the planned dip and azimuth.
Specification of the grid system used. The coordinates were provided in following format: SIRGAS 2000
datum - georeferenced to spindle 23S.
Quality and adequacy of topographic control. Elevation data are acquired using a RTX Trimble Catalyst DA2 GNSS
station at individual collar locations and entered in a central database.
A topographic surface will be created using this data and additional
topographic survey at later stage.
Data spacing Data spacing for reporting of Exploration Drill hole spacing has been designed to achieve the level desired for
and Results. exploratory work, aimed at identifying new areas of mineralisation.
distribution Hole spacing varies but an average of 40-150m distance is the most
common.
Whether the data spacing and distribution is Drilling conducted to date indicates that the mineralised zone remains
sufficient to establish the degree of geological open both at depth and laterally, highlighting the potential for resource
and grade continuity appropriate for the expansion. Ongoing drilling aims to update and increase the current
Mineral Resource and Ore Reserve estimation resource base, supporting the definition of Mineral Resources and
procedure(s) and classifications applied.

4

Criteria JORC Code explanation Commentary
Reserves in accordance with the classification criteria of the 2012 JORC
Code.
Whether sample compositing has been No compositing has been applied to the exploration results.
applied.
Orientation of Whether the orientation of sampling achieves
The mineralisation is flat lying and occurs within the saprolite/clay zone
data in relation unbiased sampling of possible structures and of a deeply developed regolith (reflecting topography and weathering).
to geological the extent to which this is known, considering
Vertical sampling from the drill holes is therefore appropriate.
structure the deposit type.
If the relationship between the drilling No orientation-based sampling bias has been identified in the data to
orientation and the orientation of key date.
mineralised structures is considered to have
introduced a sampling bias, this should be
assessed and reported if material.
Sample The measures taken to ensure sample Chain of Custody is managed by the Company until samples pass to a
security security. duly certified assay laboratory for subsampling and assaying. The
sample bags are stored on secure sites and delivered to the assay
laboratory by the Company or a competent agent. When in transit, they
are kept in locked premises. Transport logs have been set up to track
the progress of samples. The chain of custody passes upon delivery of
the samples to the assay laboratory.
Audits or The results of any audits or reviews of Sampling techniques and procedures are regularly reviewed
reviews sampling techniques and data. internally, as is data. To date, no external audits have been completed
on the planned drilling programme.

5

Section 2 Reporting of Exploration Results

(Criteria listed in the preceding section also apply to this section.)

Criteria JORC Code explanation Commentary
Mineral Type, reference name/number, location and ownership including The Araxa Project is comprised of three granted permits held by
tenement and
agreements or material issues with third parties such as joint
Itafos Araxá Mineracao E Fertilizantes S.A (“Itafos Araxá”), which has
land tenure ventures, partnerships, overriding royalties, native title interests, been acquired 100% by St George.
status historical sites, wilderness or national park and environmental
settings. Tenement 831.972/1985 is an application for a mining concession
that is progressing through the application process. Further
The security of the tenure held at the time of reporting along with any submissions to ANM (the relevant mining authority) are required to
known impediments to obtaining a licence to operate in the area. finalise the application including environmental and geotechnical
studies. Additional information may also be requested by ANM. There
is no certainty that the application will be granted or granted on
conditions that are acceptable.
Tenements 832.150/1989 (Exploration Licence) and 831.436/1988
(Application for Mining Concession) are subject to renewal and
extension applications to ANM (the relevant mining authority).
Additional information may be requested by ANM to complete the
process for renewal or extension. There is no certainty that the
renewal and extension requests will be granted or granted on
conditions that are acceptable.
Some areas within the project site are classified as legal reserve or
APP. Further exploration work (including drilling), mining activities
and any other suppression of vegetation in these areas will require
certain submissions and undertakings to the relevant authorities and
the approval of those authorities. There is no certainty that approvals
will be granted in the future or granted on conditions that are
acceptable.
Some areas within the project site are a listing and preservation zone
by the municipality, according to the current master plan, recognized
by Brazil and the State of Minas Gerais, according to the
Geoenvironmental Study of Hydromineral Sources/Araxá Project
conducted by CPRM/Geological Service of Brazil. This classification
is designed to protect water resources and vegetation within the
designated area. Approvals are required from the relevant authorities

1

Criteria JORC Code explanation Commentary
to conduct exploration and mining activities in these areas, presenting
a significant environmental management risk to the project. There is
no certainty that approvals will be granted in the future or granted on
conditions that are acceptable.
A royalty is payable to Extramil, a former owner of the project. The
royalty is a specified percentage of the revenue on Net Smelter
Returns (NSR). The following percentages apply:
• 3.5% NSR on phosphate;
• 3.0% - 10.5% NSR on REEs and niobium, on a sliding scale
according to the actual Internal Rate of Return of the Araxá Project,
more specifically:
• 3.0% NSR for IRR =<25%;
• 4.5% NSR for IRR =>25% < 30%;
• 6.0% NSR for IRR =>30% < 50%;
• 7.5% NSR for IRR =>50% < 70%; or
• 10.5% NSR for IRR => 90%.
A Government royalty is also payable which can range between 0.2%
to 3% of revenue depending on the product produced.
The land on which the project tenements are situated is owned either
by the State of Minas Gerais, CBMM or another third party. The
approval of the landowner is required to access the project area.
Access arrangements for the project have previously been agreed but
there is no certainty that access arrangements will be agreed in the
future or the timeframe in which such arrangements can be agreed.
Exploration Acknowledgment and appraisal of exploration by other parties. Historical exploration within the area of the Araxa Project is known to
done by other have occurred since 1965. Known historical exploration includes:
parties
1965 to 1974:
Exploration by the Brazilian government under the auspices of the

2

Criteria JORC Code explanation Commentary
DNPM and by CBMM and Canopus Holding SA (Canopus).
Exploration included the drilling and sampling of 24 diamond
boreholes and the excavation and sampling of 59 pits.
2004 to 2008:
Exploration was conducted by Extramil and Companhia Industrial
Fluminense (CIF) within the Araxá Project boundary. Exploration
included the drilling and sampling of 11 diamond boreholes and 31
auger holes.
2011 to 2012:
Exploration By Itafos (previously called MBAC Fertilizer Corp) which
included mapping, topographical surveys, 36 auger drillholes and 67
diamond core drillholes. Itafos also completed preliminary
metallurgical testwork and resource estimates.
Geology Deposit type, geological setting and style of mineralisation. St George is targeting Carbonatite hosted supergene style Niobium,
+/- Rare Earth mineralisation at the Araxa project.
This is based on geological interpretations and existing operating
mines within the vicinity of the Barreiro Carbonatite complex.
The project lies within the Barreiro Carbonatite complex. The host
mineral for niobium at Araxá is pyrochlore, and the host mineral for
REEs is monazite.
This complex is known to host high grade supergene (superficial)
niobium, rare-earths and phosphate with two existing mines currently
operating within the intrusion since as early as the 1950’s.
Drill hole A summary of all information material to the understanding of the Drill hole details are shown in the ASX Release.
Information exploration results including a tabulation of the following information
for all Material drill holes: For historical drill holes, see Tables 1 and 2 in the ASX Release
o easting and northing of the drill hole collar dated 6 August 2024. For methodology of new drilling, see Section 1
o elevation or RL (Reduced Level – elevation above sea level in of this JORC Table.
metres) of the drill hole collar
o dip and azimuth of the hole
o down hole length and interception depth
o hole length.

3

Criteria JORC Code explanation Commentary
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. _
Data In reporting Exploration Results, weighting averaging techniques,
aggregation maximum and/or minimum grade truncations (eg cutting of high For historical drill holes, see Tables 1 and 2 in the ASX Release
methods grades) and cut-off grades are usually Material and should be stated. dated 6 August 2024. For methodology of new drilling, see Section 1
of this JORC Table.
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 shown in detail.
The assumptions used for any reporting of metal equivalent values
_should be clearly stated. _
Relationship These relationships are particularly important in the reporting of
between Exploration Results. For historical drill holes, see Tables 1 and 2 in the ASX Release
mineralisation dated 6 August 2024. For methodology of new drilling, see Section 1
widths and If the geometry of the mineralisation with respect to the drill hole of this JORC Table.
intercept angle is known, its nature should be reported.
lengths
If it is not known and only the down hole lengths are reported, there
should be a clear statement to this effect (eg ‘down hole length, true
_width not known’). _
Diagrams Appropriate maps and sections (with scales) and tabulations of A prospect location map and section are shown in the body of the
intercepts should be included for any significant discovery being ASX Release.
reported These should include, but not be limited to a plan view of
_drill hole collar locations and appropriate sectional views. _
Balanced Where comprehensive reporting of all Exploration Results is not Details of new exploration results are within the ASX Release.
reporting practicable, representative reporting of both low and high grades
and/or widths should be practiced to avoid misleading reporting of For historical drill holes, see Tables 1 and 2 in the ASX Release
Exploration Results. dated 6 August 2024. For methodology of new drilling, see Section 1
of this JORC Table.
Other Other exploration data, if meaningful and material, should be reported
A discussion of the new exploration results is in the ASX Release.
substantive including (but not limited to): geological observations; geophysical
exploration survey results; geochemical survey results; bulk samples – size and For historical drill holes, see our ASX Release dated 6 August 2024.
data method of treatment; metallurgical test results; bulk density,
groundwater, geotechnical and rock characteristics; potential
_deleterious or contaminating substances. _

4

Criteria JORC Code explanation Commentary
Further work The nature and scale of planned further work (eg tests for lateral A discussion of further exploration work is contained in the body of
extensions or depth extensions or large-scale step-out drilling). the ASX Release. Further exploration will be planned based on
ongoing drill results, geophysical surveys, metallurgical testwork
Diagrams clearly highlighting the areas of possible extensions, results and geological assessment of prospectivity.
including the main geological interpretations and future drilling areas,
_provided this information is not commercially sensitive. _

5