ASX Announcement 8 September 2025 Gold Assays up to 25.1g/t Au at Fry Lake Gold Project HIGHLIGHTS • Channel sampling has identified shallow high-grade gold at the Flicka Zone with best results of: o 0.25m @ 11.6g/t Au from Vein 1 o 0.6m @ 6.7g/t Au from Vein 1 o 1m @ 13.6g/t Au from Vein 2  including 0.35m @ 25.1g/t Au o 0.5m @ 17.7g/t Au from Vein 2 o 1m @ 9.9g/t Au from Vein 3  o including 0.7m @ 13.2g/t Au 1.7m @ 5.2g/t Au from Vein 3  including 1m @ 7.9g/t Au • High-grade gold assays from surface demonstrate the strong gold tenor of the mineralised veins and reinforce the potential for follow-up drilling at Fry Lake. • Assay results are pending for soil and rock chip sampling completed across four target areas where 2024 soil sampling returned anomalous gold and copper results1, including samples with values of up to 17.8g/t Au and 2,420ppm Cu. Red Mountain Mining Limited (ASX: RMX) a Gold and Critical Minerals exploration and development Company, is pleased to announce high-grade gold assay results from its exploration program at the Flicka Lake claim, part of RMX’s 100%-owned Fry Lake Gold-Copper Project in Ontario, Canada. Managing Director, Lincoln Liu commented: “A series of shallow, high-grade channel sampling results at our Fry Lake Gold Project underscores the significant potential of the tenement. Fry Lake is now primed for targeted follow-up drilling. The team at Red Mountain is grateful to have the continued support of Fladgate Exploration, who had elected to take part of their consideration in RMX shares. Having partners who are prepared to back their work with equity underscores the strength of the project, the confidence in the exploration strategy and the commitment of all parties involved.” ASX: RMX investorhub.redmountainmining.com.au info@redmountainmining.com.au Red Mountain Mining Ltd ACN 119 568 Figure 1: 2025 RMX channel sample gold results for the Flicka Zone, with values for >5 g/t intervals highlighted. Approximate locations (±5m) for strongly mineralised (>5g/t Au) 2024 RMX rock chip grab samples are also shown. RED MOUNTAIN MINING LTD ASX: RMX INVESTORHUB.REDMOUNTAINMINING.COM.AU 2 Channel sampling returns high grade gold results in the Flicka Zone Channel sampling results successfully confirm RMX’s 2024 grab sampling 1 and demonstrate the high tenor of gold mineralisation associated with the three main vein prospects at Flicka Lake, with all three main vein prospects returning results of > 5ppm Au (Figure 2; Table 1). High grade intervals with all samples >5ppm Au are labelled on Figure 2 and show strike continuity in the NNW direction. Table 1 shows all samples containing >0.5ppm Au, grouped into mineralised intervals, where continuous. As is noted in the table, many of the channel samples commenced and/or finished in mineralised material, many of the mineralised intervals remain open in one, or both directions. The Flicka Zone veins are a gold-dominant system (Appendix 1). Best results include: o 0.25m @ 11.6g/t Au & 0.6m @ 6.72g/t Au from Vein 1 o 1m @ 13.64g/t Au (including 0.35m @ 25.1g/t Au) & 0.5m @ 17.7g/t Au from Vein 2 o 1m @ 9.91g/t Au (including 0.7m @ 13.2g/t Au) & 1.7m @ 5.16g/t Au (including 1m @ 7.91g/t Au) from Vein 3 Figure 2: Location of soil and rock chip samples collected during the July 2025 Flicka Lake field campaign. The locations of highly anomalous 2024 RMX soil samples (>0.1ppm Au and/or >500ppm Cu) are also shown, as well as the locations of the Fry Lake #9 (outside of RMX’s claim) and Flicka Zone gold prospects. For the locations and results of 2025 channel sampling at the Flicka Zone refer to Figure 2. 1 RMX ASX Announcement 6/11/2024: https://investorhub.redmountainmining.com.au/announcements/6616190 RED MOUNTAIN MINING LTD ASX: RMX INVESTORHUB.REDMOUNTAINMINING.COM.AU 3 The 2025 exploration work, which was completed in August, targeted both historical and recently identified highly anomalous gold and copper results. A channel sampling campaign was completed across three historically known high-grade gold-bearing quartz reefs at the Flicka Zone (Figure 1 and Figure 2), returning strongly encouraging results for gold. A total of 17 channel samples, ranging from 1m to 6m in length, were completed across the Flicka Zone, with 14 of these located within 30m of the lake shore on the previously identified Vein #1, Vein #2 and Vein #3 (Figure 2). Additionally, close-interval (25m grid) soil and rock chip sampling has been completed across four priority areas, to follow up anomalous soil gold and copper results from RMX’s 2024 sampling (Figure 1), with assay results for this work expected before the end of September. Completion of planned soil grids and rock chip sampling to test for gold and copper mineralisation As shown in Figure 2, RMX’s field team also completed as planned the collection of 1012 soil samples and 43 rock chip grab samples across four priority areas, following up anomalous gold and copper in soil values from the Company’s 2024 soil sampling program 2, which are interpreted to indicate additional potential for concealed high-grade vein-hosted gold mineralisation, similar to that exposed at the Flicka Zone and possible copper-rich polymetallic volcanic-hosted base metal sulfide mineralisation. The four areas have been soil sampled on a 25mspaced grid, with rock chip samples collected where available within the target areas. Sampling lines were carefully mapped using high-accuracy GPS and completed by hand-cutting across the target rocks. Where practical, sample breaks reflect lithological changes, such as changes in deformation, alteration and vein intensity. Samples were submitted to AGAT Laboratories, Calgary, Alberta, Canada for multielement analysis using 4 acid digest with an ICP-OES finish and gold via 50g charge fire assay with an AAS finish. Appendix 1 provides further details on where each sampling line commenced, the direction followed, the length of the sampled intervals, and the resulting gold assay results. 2 RMX ASX Announcement 19/11/2024: https://investorhub.redmountainmining.com.au/announcements/6634385 RED MOUNTAIN MINING LTD ASX: RMX INVESTORHUB.REDMOUNTAINMINING.COM.AU 4 North Grid Including duplicates, 523 samples were collected from the North Grid (Figure 1), covering an area where three 2024 soil samples returned in excess of 1g/t Au (maximum 17.8g/t Au) and two contained over 500ppm Cu (maximum 1630ppm Cu). The highest copper sample also contains 6.32g/t Au, 2.09g/t Ag, 818ppm Pb and 445ppm Zn, implying potential for copper-rich polymetallic volcanic-hosted massive sulfide mineralisation; whereas the gold-only anomalies indicate potential for the presence of high-grade vein-hosted gold mineralisation, similar to that exposed at the Flicka Zone. Northwest Grid Including duplicates, 272 samples were collected from the Northwest Grid, which surrounds a 2024 soil sample that contains 0.82g/t Au and also encompasses a sample close to the tenement boundary that contains elevated (0.017g/t) gold. This area is considered to show potential for concealed vein-hosted gold mineralisation. Central Grid Including duplicates, 86 samples were collected from the Central Grid (Figure 1), centered around a single soil sample that returned 2,420ppm Cu, which is the highest copper result of the 2024 survey, along with 0.74ppm Ag, 207ppm Pb and 115ppm Zn. Although the sample returned a below detection gold assay of <0.005ppm, its polymetallic signature suggests potential for copper-rich volcanic-hosted massive sulfide mineralisation. South Grid Including duplicates, 131 samples were collected from the South Grid (Figure 1), which lies immediately to the south of the Fry Lake #9 gold prospect and encompass two 2024 soil samples containing over 500ppm Cu (maximum 858ppm Cu) and two that contain elevated (0.029g/t and 0.012g/t) gold. Like the North Grid, the South Grid area has potential for both vein-hosted gold and copper-rich polymetallic volcanic-hosted base metal mineralisation. RED MOUNTAIN MINING LTD ASX: RMX INVESTORHUB.REDMOUNTAINMINING.COM.AU 5 Table 1: Summary of mineralised (>0.5ppm Au) samples from RMX’s 2025 channel sampling. Vein # Channel From (m) Interval To (m) Length (m) Au Interval @ 0.5ppm Au ppm cutoff 2m @ 1.00 ppm Au 0 1 1 0.916 1 2 1 1.09 L 0 0.6 0.6 6.72 M 3 3.25 0.25 11.6 0.25m @ 11.6ppm Au 0 0.3 0.3 0.558 1m @ 13.64ppm Au 0.3 0.65 0.35 13.4 0.65 1 0.35 25.1 directions F 1 1.5 0.5 17.7 0.5m @ 17.7ppm Au G 0.7 1 0.3 3.02 0.3m @ 3.02ppm Au 4.5 5.2 0.7 0.755 K Vein #1 E Vein #2 A B Open in both directions 0.6m @ 6.72ppm Au Open to E Open in both 1m @ 1.82ppm Au 5.2 5.5 0.3 4.31 0.5 1 0.5 3.31 0.5m @ 3.31ppm Au 0 0.3 0.3 2.22 1m @ 9.91ppm Au 0.3 1 0.7 13.2 Open to NE 1 1.8 0.8 5.9 1.1m @ 4.45ppm Au 1.8 2.1 0.3 0.501 Open to SW 0 0.7 0.7 1.23 1.7m @ 5.16ppm Au 0.7 1.7 1 7.91 Open in both directions C Vein #3 O P RED MOUNTAIN MINING LTD ASX: RMX INVESTORHUB.REDMOUNTAINMINING.COM.AU 6 Exploration by Fladgate under a partnership agreement with RMX As announced on 24 July 20253, RMX entered into a partnership agreement with Fladgate Exploration Consulting Corporation (“Fladgate”) to conduct the 2025 exploration program at the Flicka Lake prospect. Under the partnership agreement, Fladgate agreed to accept RMX Shares as consideration, in-lieu of its normal contract rate in cash. The agreement demonstrates Fladgate’s confidence in the potential of RMX’s Fry Lake Gold-Copper Project. Geological Background The Flicka Lake claims lie in the Archaean Meen-Dempster Greenstone Belt within the Uchi Lake Subprovince of the Superior Province of Canada. Flicka Lake is one of four recently acquired 100% RMX-owned properties within the relatively underexplored southwest portion of the Belt (Figure 3). The Superior Province is globally recognised as a Tier 1 exploration destination for synvolcanic base metal and structurally controlled Archaean orogenic gold mineralisation. Numerous orogenic gold prospects and mineral occurrences are recorded for the Meen-Dempster Greenstone Belt, including significant historical production from the Golden Patricia, Pickle Crow and Dona Mines (Figure 3). The four 100% RMX owned properties, collectively termed the Fry Lake Project, have seen only limited previous exploration and are considered to have significant potential for undiscovered orogenic gold and possible base metal mineralisation. The Archaean geology of the Flicka Lake property primarily comprises mafic and intermediate metavolcanic units that have been intruded locally by a series of gabbroic sills. Metasedimentary units are rare and consist of a few isolated outcrops of conglomerate, greywacke and banded iron formations up to 5m in thickness. Local metamorphism ranges from greenschist facies in the southern part of the property, where chlorite and epidote are more prevalent within mafic and intermediate units, to amphibolite facies further north, where hornblende is more abundant. 3 RMX ASX Announcement 24/7/2025: https://investorhub.redmountainmining.com.au/announcements/7069351 RED MOUNTAIN MINING LTD ASX: RMX INVESTORHUB.REDMOUNTAINMINING.COM.AU 7 Figure 3: Geology, orogenic gold prospects and mineral occurrences, significant historical gold mines and RMX properties within the Meen-Dempster Greenstone Belt, Superior Province, Canada. Geology simplified from 1:250 000 Scale Bedrock Geology of Ontario (https://www.geologyontario.mines.gov.on.ca/publication/MRD126-REV1). Gold prospects and occurrences, and historical production figures from Ontario Mineral Inventory (https://www.geologyontario.mndm.gov.on.ca/mines/ogs/databases/OMI.zip). Authorised for and on behalf of the Board, Mauro Piccini Company Secretary RED MOUNTAIN MINING LTD ASX: RMX INVESTORHUB.REDMOUNTAINMINING.COM.AU 8 About Red Mountain Mining Red Mountain Mining Limited (ASX: RMX) is a mineral exploration and development company. Red Mountain has a portfolio of US and Australia projects in Critical Minerals and Gold. Red Mountain is progressing its Armidale Antimony-Gold Project in NSW, Fry Lake Gold project in Canada. In addition, Red Mountain’s project portfolio includes the Nevada Lithium Projects. Competent Person Statement The information in this announcement that relates to Exploration Results and other technical information complies with the 2012 Edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (JORC Code). It has been compiled and assessed under the supervision of contract geologist Mark Mitchell. Mr Mitchell is a Member of the Australasian Institute of Geoscientists and 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 JORC Code. Mr Mitchell consents to the inclusion in this announcement of the matters based on his information in the form and context in which it appears. Disclaimer In relying on the above mentioned ASX announcement and pursuant to ASX Listing Rule 5.23.2, the Company confirms that it is not aware of any new information or data that materially affects the information included in the above-mentioned announcement. JOIN THE RED MOUNTAIN MINING INVESTOR HUB Visit https://investorhub.redmountainmining.com.au for access to the Investor Hub RED MOUNTAIN MINING LTD ASX: RMX INVESTORHUB.REDMOUNTAINMINING.COM.AU 9 Appendix 1 Sample details, gold and silver assays and >0.5ppm Au intervals for Flicka Zone channel samples. Channel A B C D E F G Vein # Vein #3 Vein #3 Vein #3 Vein #3 Vein #2 Vein #2 Vein #2 Start Location (UTM NAD83 Zone 15 Channel SampleID From (m) Easting (m) Northing (m) Elevation (m) Orientation 613781.3 613776.4 613774.5 613776.4 613734.4 613732.3 613727.1 5677559.4 5677558.3 5677560.6 5677549.4 5677525.3 5677528.3 5677530.6 Interval Summary of field description Length (m) To (m) Ag ppm Au ppm Interval @ 0.5ppm Au cutoff 220 5995401 0 1 1 Chlorite-carbonate altered massive gabbro, tr disseminated pyrite. 0.6 0.017 220 5995402 1 2 1 Chlorite-carbonate altered massive gabbro, tr disseminated pyrite. 0.9 0.054 220 5995403 2 3 1 Chlorite-carbonate altered massive gabbro, tr disseminated pyrite. 0.9 0.009 220 5995404 3 4 1 Chlorite-carbonate altered massive gabbro, tr disseminated pyrite. 1.3 0.013 220 5995405 4 4.5 0.5 Chlorite-carbonate altered massive gabbro, tr disseminated pyrite. 1.5 0.015 225 5995406 4.5 5.2 0.7 1.3 0.755 225 5995407 5.2 5.5 1.1 4.31 230 5995408 5.5 6 240 5995409 0 0.5 240 5995411 0.5 1 240 5995412 1 2 240 5995413 2 3 240 5995414 3 3.5 240 5995415 3.5 4.5 240 5995416 0 0.3 240 5995417 0.3 1 240 5995418 1 2 200 5995419 0 1 200 5995421 1 2 230 5995422 0 0.3 230 5995339 0.3 0.65 230 5995341 0.65 1 230 5995423 0 1 345 344 345 345 344 345 346 230 5995424 1 1.5 230 5995425 1.5 2.5 250 5995426 0 0.7 250 5995427 0.7 1 250 5995428 1 1.3 Sheared, mylonitic chlorite-carbonate altered gabbro, with 1% carbonate and quartz stringers parallel to shear fabric and minor disseminated pyrite. Sheared gabbro hosting 20cm sugary moderately oxidised quartz-chlorite vein, 0.3 with ~10% very fine grained disseminated pyrite. 0.5 Chlorite-carbonate altered massive gabbro, tr disseminated pyrite. Chlorite-carbonate altered sheared gabbro, 7% carbonate stringers along foliation, tr disseminated pyrite. Moderately oxidised and carbonate altered sheared gabbro hosting 15cm 0.5 oxidized, sugary quartz vein with ~10% very fine grained disseminated pyrite. Chlorite-carbonate altered sheared gabbro, with 3% quartz-carbonate and 0.1% 1 fine pyrite veinlets. 0.5 1 Chlorite-carbonate altered massive gabbro. 1m @ 1.82ppm Au 0.7 0.026 1 0.087 0.8 3.31 0.9 0.017 0.8 0.01 0.5 Chlorite-carbonate altered massive gabbro, tr disseminated pyrite. 0.9 0.008 1 Chlorite-carbonate altered massive gabbro, tr disseminated pyrite. 0.5m @ 3.31ppm Au 0.7 0.009 Sheared vfg quartz-carbonate altered mafic rock with stringers of oxidised quartzcarbonate,weak silica flooding, 5% disseminated pyrite. 1 2.22 1m @ 9.91ppm Au 0.7 70 cm moderately oxidised sugary quartz vein, with ~10% vfg disseminated pyrite. 1.7 13.2 Open to NE 0.9 0.034 0.7 0.015 <0.5 0.014 0.7 0.558 0.6 13.4 0.3 1 Chlorite-carbonate altered massive vfg mafic rock, tr disseminated pyrite. Chlorite-carbonate altered massive vfg mafic rock with 15cm slightly oxidised quartz-tourmaline vein. Chlorite-carbonate altered massive vfg mafic rock, tr disseminated pyrite, 30% 1 boudinaged quartz-tourmaline veins. Chlorite-carbonate altered massive gabbro, 0.5% disseminated pyrite and 0.5% 0.3 disseminated pyrrhotite, 5% carbonate stringers. Oxidised chlorite altered massive gabbro, 45cm oxidised quartz vein with 0.35 arsenopyrite and 2 specs of visible gold. Oxidised chlorite altered massive gabbro, 45cm oxidised quartz vein with 0.35 arsenopyrite. ~5% along fractures. Sheared, mylonitic chlorite-carbonate altered gabbro, with trace disseminated 1 pyrite. Sheared, mylonitic chlorite-carbonate altered gabbro, with ~5% oxidised quartz 0.5 veinlets, minor disseminated pyrite. Sheared, mylonitic chlorite-carbonate altered gabbro, with trace disseminated 1 pyrite. 1 1m @ 13.64ppm Au <0.5 25.1 0.8 0.015 1.3 17.7 0.8 0.36 0.7 Sheared, oxidised, chlorite altered gabbro, with trace disseminated pyrite. 2.8 0.018 0.3 30cm oxidised sugary quartz vein with ~2% pyrite. 0.6 3.02 Strongly sheared fissile chlorite-carbonate altered gabbro, with ~3% quartz veining and trace disseminated pyrite. 5.4 0.39 0.3 Open in both directions 0.5m @ 17.7ppm Au 0.3m @ 3.02ppm Au H Minor vein 613718.2 5677527.4 346 270 5995429 0 1 1 Chlorite-carbonate altered massive gabbro with 20cm quartz tourmaline vein. 0.8 0.008 I Minor vein 613717.9 5677525.0 349 260 5995431 0 0.5 0.5 Chlorite-carbonate altered massive gabbro with 10cm quartz tourmaline vein. 0.7 0.012 270 5995432 0 1 0.7 <0.002 J Minor vein 613710.5 5677523.1 346 270 5995433 1 2 0.7 <0.002 250 5995434 0 1 <0.5 0.916 2m @ 1.00 ppm Au K L M O P Q Vein #1 Vein #1 Vein #1 Vein #3 Vein #3 Vein #2 613693.0 613689.1 613691.4 613769.2 613767.6 613722.6 5677514.5 5677520.4 5677523.1 5677568.3 5677569.9 5677564.8 349 Chlorite-carbonate altered massive gabbro with 5cm oxidized quartz vein, trace disseminated pyrite. Strongly magnetic chlorite-carbonate altered massive gabbro with ~1% 1 disseminated magnetite, trace disseminated pyrite and ~1% carbonate stringer. Chlorite-carbonate altered massive gabbro with ~1% disseminated pyrite and1% 1 quartz carbonate veinlets. Brecciated chlorite-carbonate altered gabbro with ~1% disseminated pyrtite and 1 a 25cm quartz-pyrite vein with patchy oxidation. 1 1 1.09 Open in both directions 0.6 6.72 0.6m @ 6.72ppm Au Open to E 1 Sheared, oxidised carbonate-altered gabbro with ~3% pyrite veinlets. 0.8 0.154 1 Chlorite-carbonate altered massive gabbro, tr disseminated pyrite. 0.7 0.021 2 1 Chlorite-carbonate altered massive gabbro, tr disseminated pyrite. 0.6 0.025 2 3 1 Chlorite-carbonate altered massive gabbro, ~1% disseminated pyrite. 0.7 0.043 5995442 3 3.25 0.5 11.6 240 5995443 3.25 4.25 0.9 0.208 240 5995316 0 1 0.8 0.334 240 5995317 1 1.8 240 5995318 1.8 2.1 240 5995319 0 0.7 240 5995321 0.7 1.7 290 5995322 0 1 1 Weakly oxidised chlorite-carbonate altered massive gabbro. 290 5995323 1 2 1 250 5995435 1 2 270 5995436 0 0.6 270 5995437 0.6 1.6 240 5995438 0 1 240 5995439 1 240 5995441 240 0.6 Sheared, oxidised carbonate-altered gabbro with ~10% quartz-pyrite veining. 346 350 345 345 0.25 Oxidised quartz-carbonate vein, ~2% pyrite. 1 Chlorite-carbonate altered massive gabbro, tr disseminated pyrite. Sheared, mylonitic, oxidised carbonate altered gabbro, with 0.1% quartzcarbonate stringers along foliation , trace disseminated pyrite and pyrrhotite. Sheared, mylonitic, oxidised carbonate altered gabbro, with 80% deformed qtz0.8 carbonate-pyrite-arsenopyrite veinlets and trace vfg tourmaline. Sheared, mylonitic, oxidised carbonate altered gabbro, with 0.1% quartz0.3 carbonate stringers along foliation , 3% disseminated pyrite and 2% arsenopyrite. Sheared, mylonitic, chlorite-carbonate altered gabbro, withtrace quartz0.7 carbonate stringers along foliation, trace disseminated pyrite and pyrrhotite. Sheared, mylonitic, oxidised carbonate altered gabbro, with 30% deformed qtz1 carbonate and blue quartz veinlets, ~10% disseminated pyrite, 1% arsenopyrite. 1 350 RED MOUNTAIN MINING LTD ASX: RMX Weakly oxidised chlorite-carbonate altered massive gabbro, with 70% quartzcarbonate veining. 0.25m @ 11.6ppm Au 0.8 5.9 1.2 0.501 Open to SW 0.7 1.23 1.7m @ 5.16ppm Au Open in both directions 1 7.91 <0.5 0.009 <0.5 0.016 1.1m @ 4.45ppm Au INVESTORHUB.REDMOUNTAINMINING.COM.AU 10 JORC Code, 2012 Edition - Table 1 1.1 Section 1 Sampling Techniques and Data Criteria JORC Code explanation Sampling • techniques Commentary Nature and quality of sampling (e.g. cut • channels, random chips, or specific specialised lengths perpendicular to the strike of the industry standard measurement tools quartz vein system known to host gold. The appropriate to the minerals under investigation, such as down hole gamma samples were cut at approximately 5cm sondes, or handheld XRF instruments, etc). wide and 5-20cm deep and details are These examples should not be taken as presented in Appendix 1. The channels limiting the broad meaning of sampling. • Include reference to measures taken to were cut with two parallel rock saw cuts ensure sample representivity and the and sample chiselled out. The channels appropriate calibration of any measurement sites were based on basement exposures tools or systems used. • and quartz veining. Aspects of the determination of mineralisation that are Material to the Public • Report. • Channel Samples were taken along 1-6m Soil sampling was taken along NNE orientated traverses at approximately 100m In cases where ‘industry standard’ work has line and sample spacings regolith taken been done this would be relatively simple (eg ‘reverse circulation drilling was used to obtain from the B horizon 10-100cm depth unless 1 m samples from which 3 kg was pulverised thick humus/muskeg where shallow scrapes to produce a 30 g charge for fire assay’). In were taken. Samples were damp and other cases more explanation may be collected raw. required, such as where there is coarse gold that has inherent sampling problems. Unusual • commodities or mineralisation types (eg Rock samples were collected from outcrop with 1-2kg samples collected at sites submarine nodules) may warrant disclosure of deemed to be intrusive (quartz vein) or detailed information. considered potential hosts to mineralisation (sheared and/or altered basement). Drilling techniques • Drill type (e.g. core, reverse circulation, open- • No drilling reported. hole hammer, rotary air blast, auger, Bangka, sonic, etc) and details (e.g. core diameter, triple or standard tube, depth of diamond tails, face-sampling bit or other type, whether core is oriented and if so, by what method, etc). RED MOUNTAIN MINING LTD ASX: RMX INVESTORHUB.REDMOUNTAINMINING.COM.AU 11 Criteria JORC Code explanation Drill sample • recovery Commentary • No drilling reported. Whether core and chip samples have been • No drilling reported. geologically and geotechnically logged to a • Channel, rock and soil sampling data are Method of recording and assessing core and chip sample recoveries and results assessed. • Measures taken to maximise sample recovery and ensure representative nature of the samples. • Whether a relationship exists between sample recovery and grade and whether sample bias may have occurred due to preferential loss/gain of fine/coarse material. Logging • level of detail to support appropriate Mineral not used for resource estimation in this Resource estimation, mining studies and release. metallurgical studies. • Whether logging is qualitative or quantitative in nature. Core (or costean, channel, etc) photography. • The total length and percentage of the relevant intersections logged. Sub- • • quarter, half or all core taken. sampling techniques If core, whether cut or sawn and whether • Channel samples aim to test the quartz veining for gold and were biased towards If non-core, whether riffled, tube sampled, vein exposures, no extensive excavations and sample rotary split, etc and whether sampled wet or preparation dry. were conducted. Sample lengths are For all sample types, the nature, quality and reported, and the type of sampling is • appropriateness of the sample preparation considered appropriate for the objects to technique. • test the gold mineralisation across strike. Quality control procedures adopted for all sub-sampling stages to maximise • representivity of samples. • predetermine points based on generally a Measures taken to ensure that the sampling 100m spacing. Rock chip sampling was is representative of the in situ material biased towards outcrop that was altered or collected, including for instance results for field duplicate/second-half sampling. • Whether sample sizes are appropriate to the grain size of the material being sampled. Soil sampling was collected from intrusive in nature. • Soils were unscreened being damp while rock samples were taken raw, both considered appropriate for the medium sampled. RED MOUNTAIN MINING LTD ASX: RMX INVESTORHUB.REDMOUNTAINMINING.COM.AU 12 Criteria JORC Code explanation Commentary • QAQC included cleaning screens and sampling equipment between sites, new paper geochems and plastic protection sleeves or new high density woven calico bags. • Duplicate, blank and standards (CRM) were done at approximately 20 sample intervals offset. Quality of • The nature, quality and appropriateness of assay data the assaying and laboratory procedures used and and whether the technique is considered laboratory partial or total. tests • • pulverized with a 25g spilt taken fire assay. A split samples will also be taken for aqua regia and ICP-OES finish for base metals For geophysical tools, spectrometers, handheld XRF instruments, etc, the • parameters used in determining the analysis Channel and rocks crushed, dried, pulverized with splits taken for 50g charge including instrument make and model, • Soil samples will be crushed, dried and reading times, calibrations factors applied and fire assay and 4 acid total digest for base their derivation, etc. metals. Charges are analysed by ICP-OES. Nature of quality control procedures adopted (e.g. standards, blanks, duplicates, external • method for gold. laboratory checks) and whether acceptable levels of accuracy (i.e. lack of bias) and Fire Assay is considered an appropriate • precision have been established. Duplicate, blank and standards (CRM) were done at approximately 20 sample intervals offset. Verification • The verification of significant intersections by of sampling either independent or alternative company and personnel. assaying • Channel samples with significant assays were duplicate tested by the sample laboratory as a check. No adjustments were • The use of twinned holes. • Documentation of primary data, data entry made to the data other than reporting procedures, data verification, data storage assay and assay length together. (physical and electronic) protocols. • Discuss any adjustment to assay data. • Soil and Rock Assay results are yet to be received. • Sample check lists were compiled during the collection phase, checked before RED MOUNTAIN MINING LTD ASX: RMX INVESTORHUB.REDMOUNTAINMINING.COM.AU 13 Criteria JORC Code explanation Commentary laboratory lodgement and checked again by the laboratory. • Sample details are done in the field electronically with a tablet recording location, site description and other details by drop down menus. Data is transferred to database for quality inspection. Location of • data points Accuracy and quality of surveys used to • locate drill holes (collar and down-hole with site locations recorded in NAD83 UTM surveys), trenches, mine workings and other 15N. locations used in Mineral Resource • estimation. • Specification of the grid system used. • Quality and adequacy of topographic control. Tablet and Garmin GPS used in the field Channel samples were reported using a differential GPS accurate to +/-0.5m. • No DEM Topographic control was used, the ground is relatively flat. • No mineral resource estimation was conducted. Data • distribution Data spacing for reporting of Exploration • Results. spacing and • spacings, see Maps, based on available Whether the data spacing and distribution is basement exposures. sufficient to establish the degree of geological and grade continuity appropriate • for the Mineral Resource and Ore Reserve sampling. applied. Whether sample compositing has been Follow-up soil sample spacing (25m) is considered appropriate for initial first pass estimation procedure(s) and classifications • Channel sampling was done at various • applied. Rock samples were collected where basement exposures permitted. • Being exploration results no work was considered sufficient for any ore determinations. • No results have been received for the rock and soil