GATEWAY MINING LIMITED — Capital/Financing Update 2021

Apr 27, 2021

ABN: 31 008 402 391 Level 11, 52 Phillips Street Sydney NSW 2000 GPO Box 225 Sydney NSW 2001 Tel: 61 2 8316 3998 Fax: 61 2 8316 3999 Website: www.gatewaymining.com.au

ASX Announcement: 28 April 2021

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HIGH-GRADE GOLD DISCOVERY AT GIDGEE GROWS WITH SIGNIFICANT NEW RESULTS FROM STEP-OUT DRILLING

First results from recent RC drilling successfully extends the known mineralised gold system at the Evermore Prospect by a further 200m to the south, to over 420m

HIGHLIGHTS

• Significant high-grade results returned in the initial batch of assays from the current Reverse Circulation (RC) drilling program targeting potential extensions of the previously discovered mineralisation at the Evermore discovery (formerly referred to as the broader Northwest Margin target area).

• Results have confirmed the presence of high-grade mineralisation within the layered mafic-ultramafic intrusive unit that has been identified along the margin of the granodiorite, significantly extending the footprint of known mineralisation within the Lower Zone at Evermore by 200m to over 420m:

• GRC651: 12 metres @ 5.6g/t Au from 78m, including 4m @ 13.2g/t Au

• ▪ GRC634: 23 metres @ 1.4g/t Au from 105m ▪ GRC639: 12 metres @ 1.7g/t Au from 122m ▪ GRC633: 2 metres @ 4.1g/t Au from 111m

• These results build on the previously reported intersections of[1] :

• GRC630: 7 metres @ 11.7g/t Au from 97m

• ▪ GRC550: 15 metres @ 3.0g/t Au from 104m and; 10 metres @ 9.2g/t Au from 140m

• ▪ GRC538: 10 metres @ 2.5g/t Au from 114m

• The outstanding new intercept of 12m @ 5.6g/t from 78m in hole GRC651 is located approximately 200m south of the southernmost intersection of the Lower Zone in GRC630 (7m @ 11.7g/t from 97m).

• Together with previously reported intersections, this has extended the known strike of high-grade mineralisation within the Lower Zone to over 420m and remains open to the north and south.

• Drilling completed to date at these extensional areas of Evermore is still relatively wide-spaced, with further work to be completed to adequately define the orientation and continuity of the high-grade components to the mineralisation along strike and down-dip.

• Results received to date only represent the initial 14 holes returned from the laboratory, with a further 47 holes submitted and still outstanding. The location of holes with assays returned to date is not systematic, so is not yet considered to provide a complete picture of the prospectivity of the area.

• RC and diamond drilling is continuing with the RC rig to be redeployed back to the Evermore discovery to further define this southern extension to the high-grade mineralisation and further enhance the geological understanding generated by the drilling to date.

• A review of existing fire assay and cyanide leach assay data by independent consulting metallurgists Scott-Daley-Francks has confirmed the view that the gold present at these various prospect areas across the Gidgee Gold Project, including the Evermore prospect, is very likely to be “free-milling” at a grind size reasonably typical of conventional Western Australian CIP/CIL gold operations.

1 See ASX announcements dated 20 November 2020 and 22 January 2021

Gateway Mining Limited (ASX: GML) ( Gateway or Company ) is pleased to advise that it has significantly extended the footprint of the high-grade Lower Zone at the emerging Evermore Prospect (previously referred to as the Northwest Margin target) at its 100%-owned, 1,000km[2] Gidgee Gold Project in Western Australia after receiving highly encouraging results from the initial batches of assays from the ongoing Reverse Circulation ( RC ) drill program.

Initial assay results have been received from 14 RC holes out of the 61 completed and submitted to date at both the Evermore prospect and the southern continuation of prospective geology between 120,000oz MontagueBoulder Inferred Mineral Resource (1.7Mt @ 2.2g/t Au)[2] and the historic Caledonian NE pit (see Figure 1).

The program, which comprises both RC and associated diamond drilling, is ongoing.

A full description of significant intersections received to date are included as Table 1, with drill program details documented in the JORC (2012) Table 1 included as Appendix 2.

KEY POINTS:

• Drilling of the Evermore RC program commenced in February 2021, as part of a broader RC and diamond drilling campaign along the Northwest Margin of the Montague Granodiorite. Drilling at Evermore was designed with two aims. The first was to in-fill around significant high-grade intersections from the 2020 RC campaign within the Lower Zone to confirm the Company’s geological understanding of the mineralisation controls. The second was to step-out from these intersections both along strike and down-dip, testing the newly defined layered mafic-ultramafic intrusion along the margin of the Montague Granodiorite.

• A total of 45 holes (including several re-entries of previously drilled holes) have been completed for 7,415m of RC drilling at Evermore. Drilling was designed to in-fill to approximately 40m x 40m around the previously received intersections, and drill 40m spaced holes on nominal 80m spaced sections stepping out to the south and north along the granodiorite margin (see Figure 2).

• Several holes that intersected the targeted shear zone within the mafic-ultramafic intrusive have returned mineralised assay intervals. High-grade intersections returned include:

• GRC651: 12 metres @ 5.6g/t Au from 78m, including 4m @ 13.2g/t Au

• ▪ GRC634: 23 metres @ 1.4g/t Au from 105m ▪ GRC633: 3 metres @ 1.9g/t Au from 100m; and 2 metres @ 4.1g/t Au from 111m

• ▪ GRC639: 12 metres @ 1.7g/t Au from 122m

• Encouragingly, the intersection in hole GRC651 is located approximately 200m south of the southernmost intersection previously drilled in the Lower Zone (Figure 2). This has now extended the defined high-grade strike of mineralisation within the Lower Zone to over 420m, which is still open along strike to the north and south (see Figure 2). Previously reported drilling results also returned from this zone are[3] :

• GRC630: 7 metres @ 11.7g/t Au from 97m

• ▪ GRC550: 15 metres @ 3.0g/t Au from 104m and; 10 metres @ 9.2g/t Au from 140m

• ▪ GRC538: 10 metres @ 2.5g/t Au from 114m

• GRC634 successfully intersected the targeted shear zone and returned a broad zone of mineralisation (23m @ 1.4g/t Au), demonstrating some expected variability within the structure. The mineralisation remains open to the west but is constrained to the east against the contact with the granodiorite where GRC633 intersected a zone of mineralisation including 3m @ 1.9g/t and 2m @ 4.1g/t Au.

• Holes GRC645 and 646 tested the target zone 40m south of the intersection previously reported in GRC630 (7m @ 11.7g/t Au) and appear to have intersected a zone of structural complexity that has off-set the geology in this local position. GRC645 was drilled within the granodiorite, so was deemed an unsuccessful test, and GRC646 suggests that the mineralisation could be located further to the west.

• Mineralisation observed consists of moderately dipping, silica and biotite altered shearing within the host layered mafic-ultramafic intrusion, locally developed to a talc-chlorite schist. Quartz veining is developed, with pyrite and chalcopyrite sulphide development common. Occasional galena is also observed.

2 See ASX announcement dated 3 October 2019

3 See ASX announcements dated 20 November 2020 and 22 January 2021

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• The results of the drilling received to date are highly encouraging and they continue to demonstrate that there is a significant zone of gold mineralisation along the margin of the granodiorite for over 400m of strike at the Evermore Prospect. The controls on the mineralisation will continue to be better understood as remaining drilling results are returned. It is clear that there is a very high-grade component that is hosted by a number of structures that intersect a mafic-ultramafic intrusion that ranges between 50m and +100m.

Analytical and Drilling Status

• To date assay batches have not been returned from the laboratory in a systematic manner. Many jobs in critical areas around these intersections are still to be received, and many holes returned to date have been peripheral to the targeted mineralisation. Several significant holes drilled into the target structure and host lithology are still outstanding.

• RC and diamond drilling at the greater Northwest Margin area is continuing. RC drilling is currently completing systematic RC traverses between the 120,000oz Montague-Boulder Inferred Mineral Resource (1.7Mt @ 2.2g/t Au)[4] and the historic Caledonian NE pit. Following the receipt of these results, additional RC holes to tighten drill coverage around the significant high-grade zone will be planned, as well as refine further targeting along strike to the south.

Metallurgical Review

• As part of the ongoing assessment of the Gidgee Gold Project, Gateway commissioned consulting metallurgists Scott-Daley-Francks ( SDF ) to review the database of fire assay data that have been repeated utilising the “LeachWell” cyanide leach assay technique.

• With fire assay being an accepted total gold digest technique, and LeachWell being an accelerated cyanide leach technique, comparison of the two can confirm that gold mineralisation is free-milling in nature.

• It should be noted that this form of analysis provides preliminary indications and are not considered a substitute for full diagnostic metallurgical testwork suitable for deriving true metallurgical recoveries or kinetic properties of the mineralisation.

• Fire assay and LeachWell data were present for 584 samples from various drilling campaigns at the Montague-Boulder, Whistler, Flametree and Evermore (formerly Northwest Margin) prospects. Basic analysis of these data by SDF indicates a strong correlation between fire assay and LeachWell techniques, beyond the expected variation within gold samples due to the nugget effect and gold occlusion in silicates.

• This correlation indicates that the gold present at these prospect areas is very likely to be “free-milling” at a grind size reasonably typical of conventional Western Australian CIP/CIL gold operations.

• These results provide strong encouragement and it is planned that programs of targeted metallurgical sampling and diagnostic testing will be undertaken at the various prospects as part of any formal economic assessments of mineralisation in the future.

4 See ASX announcement dated 3 October 2019

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Figure (1): Northwest Corridor, including Evermore drill program with existing drill results in holes greater than 50m deep

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Figure (2): Evermore Prospect RC drilling with significant intercepts and previous “Lower Zone” intersections

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Figure (3): RC drill cross-section 6,967,600mN

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MANAGEMENT COMMENT

Gateway’s Managing Director, Mr Mark Cossom, said: “Our 2021 exploration campaign is off to a great start and it’s pleasing to say that we’ve picked up pretty much where we left off last year. The initial batch of assays from follow-up drilling at the Evermore prospect – our new name for the emerging Northwest Margin target area – has well and truly come up with the goods!

“The broad high-grade intercept of 12m @ 5.6g/t including 4m @13.2g/t in GRC651 is located around 200m south of, and correlates extremely well with, the previous outstanding intercept of 7m @ 11.7g/t. This shows that the footprint of the high-grade Lower Zone mineralisation extends over 420m and remains open – a highly significant result which strengthens our conviction that we have an exciting discovery on our hands here.

“We still have a large number of assays outstanding from recent drilling at the Evermore prospect, including samples from 47 holes which we hope to receive in the next 2-3 weeks. These results should help us to continue to refine our understanding of the geometry and controls on the mineralisation at Evermore, and will help us to target the next phase of drilling. The RC rig currently on site will be immediately re-deployed to drill these holes, which will be designed to in-fill drill spacing and lay the foundations for a maiden JORC Mineral Resource.

“This is an exciting time for our shareholders. We now have multiple shallow high-grade intercepts into a completely new area between our two cornerstone deposits which has all the hallmarks of a significant new discovery. We have drill rigs currently on site generating vast quantities of samples which should generate solid news-flow in the months ahead. Plus, we’ve just had preliminary indications that all of the key deposits and prospects across the Gidgee Gold project have favourable metallurgy with free-milling characteristics. We intend to do more work to confirm this conclusion, but we are definitely on the right track.”

This released has been authorised by:

Mark Cossom Managing Director

For and on behalf of GATEWAY MINING LIMITED

Competent Person Statement

The information in this report that relates to Exploration Results or Mineral Resources is based on information compiled or reviewed by Mr Mark Cossom who is a full-time employee of Gateway Mining Ltd and is a current Member of the Australian Institute of Mining and Metallurgy. Mr Cossom owns shares and options in Gateway Mining Ltd. Mr Cossom has sufficient experience, which is relevant to the style of mineralisation and types of deposit under consideration and to the activities undertaken, to qualify as a Competent Person as defined in the 2012 Edition of the “Australasian Code of Reporting of Exploration Results, Mineral Resources and Ore Reserves”. Mr Cossom consents to the inclusion in the report of the matters based on the information in the form and context in which it appears.

Investors Media Mark Cossom Nicholas Read Managing Director Read Corporate T: 02 8316 3998 T: 08 9388 1474 or Kar Chua Company Secretary T: 02 8316 3998

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TABLE (1): EVERMORE RC DRILLING SIGNIFICANT INTERCEPT TABLE

Hole ID	Prospect	MGA_E	MGA_N	RL	Dip/Azi	Hole Depth(m)	From (m)	To (m)	Width (m)	Au (g/t)	Comment
GRC494	Evermore	751117	6968059	512	-60\090	161	136	137	1	7.2	Re-entry78m - 161m
GRC527	Evermore	751160	6967700	512	-60\270	204	194	195	1	2.2	Re-entry92m - 204m
GRC538	Evermore	751082.29	6968018.287	512	-60\090	180	136	137	1	1.1	Re-entry132 - 180m
GRC632	Evermore	751040	6968015	512	-60\090	198	126	130	4	1.9	Down-dip of GRC538, intersected outside U/M
							175	177	2	1.2
							197	198	1	2.7	Mineralisation at EOH
GRC633	Evermore	751060	6967835	512	-60\090	162	100	103	3	1.9
							111	113	2	4.1
GRC634	Evermore	751020	6967835	512	-60\090	180	105	128	23	1.4
GRC636	Evermore	751060	6967910	512	-60\090	164	28	31	3	1.2
							118	123	5	1.3
GRC638	Evermore	751090	6967980	512	-60\090	146				NSA
GRC639	Evermore	751050	6567980	512	-60\090	158	122	134	12	1.7
							147	148	1	1.7
GRC640	Evermore	751010	6967980	512	-60\090	190				NSA
GRC643	Evermore	751070	6968150	512	-60\090	120				NSA
GRC644	Evermore	750990	6968150	512	-60\090	146	63	64	1	1.1
							100	101	1	2.3
GRC645	Evermore	751040	6967750	512	-60\090	160				NSA
GRC646	Evermore	751000	6967750	512	-60\090	160	102	105	3	1.2
							138	139	1	1.5
GRC651	Evermore	750930	6967600	512	-60\090	160	78	90	12	5.6	including 4m @ 13.2g/t Au
							97	98	2	1.1
GRC655	Evermore	751040	6967340	512	-60\270	134					Did not reach target - shanked bit
GRC667	Achilles	751480	6965840	512	-60\270	128					Achilles Nth stratigraphic hole
GRC668	Achilles	751560	6965840	512	-60\270	128					Achilles Nth stratigraphic hole

Notes:

• All coordinates located in MGA (GDA94) Zone 50. Azimuth is magnetic degrees

• RL’s are nominal

• Significant intersections are calculated as a minimum of 1m greater than 1.0g/t Au with a maximum of 4m of internal dilution

• Au assayed by 50g Fire Assay with AAS finish at ALS Laboratories Perth and Kalgoorlie

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APPENDIX (1)

About the Gidgee Gold Project

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Gidgee Gold Project Tenement Location Diagram

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APPENDIX (2): EVERMORE RC DRILLING JORC Code, 2012 Edition Table 1

Section 1 Sampling Techniques and Data

(Criteria in this section apply to all succeeding sections)

Criteria	JORC Code explanation	Commentary
Sampling techniques	• Nature and quality of sampling (e.g. cut channels, random chips, or specific specialised industry standard measurement tools appropriate to the minerals under investigation, such as down hole gamma sondes, or handheld XRF instruments, etc.). These examples should not be taken as limiting the broad meaning of sampling. • Include reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems used. • Aspects of the determination of mineralisation that are Material to the Public Report. • In cases where ‘industry standard’ work has been done this would be relatively simple (e.g. ‘reverse circulation drilling was used to obtain 1 m samples from which 3 kg was pulverized 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 (e.g. submarine nodules) may warrant disclosure of detailed information.	• RC drilling (GRC prefix) - 2kg - 3kg samples were split from dry 1m bulk samples. The sample was initially collected from the cyclone in an inline collection box. Once the metre was completed the sample was dropped under gravity thorough a Metzke cone splitter, with the 1m split for assay collected in a calico bag. • The bulk reject from the sample was collected in wheelbarrows and dumped into neat piles on the ground. • Field duplicates were collected at a ratio of 1:50 and collected at the same time as the original sample through the B chute of the cone splitter. OREAS certified reference material (CRM) was inserted at a ratio of 1:50. The grade ranges of the CRM’s were selected based on grade populations and economic grade ranges.
Drilling techniques	• Drill type (e.g. core, reverse circulation, open-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.).	• RC – Challenge Drilling drill rig was used. The rig consisted of a truck mounted RC rig with on board compressor, an on board Booster, and a truck mounted auxiliary compressor.
Drill sample recovery	• Method of recording and assessing core and chip sample recoveries and results assessed. • Measures taken to maximize 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.	• During the RC sample collection process, the sample sizes were visually inspected to assess drill recoveries • The majority of samples were of good quality with ground water having minimal effect on sample quality or recovery. • From the collection of recovery data, no identifiable bias exists.
Logging	• Whether core and chip samples have been geologically and geotechnically logged to a level of detail to support appropriate Mineral Resource estimation, mining studies and metallurgical studies. • Whether logging is qualitative or quantitative in nature. Core (or costean, channel, etc.) photography.	• RC chips were washed and stored in chip trays in 1m intervals for the entire length of each hole. Chips were visually inspected and logged to record lithology, weathering, alteration, mineralisation, veining and structure. • Data on rock type, deformation, colour, structure, alteration, veining, mineralisation and oxidation state were recorded. • Logging is both qualitative and quantitative or semi quantitative in nature.

Criteria	JORC Code explanation	Commentary
	• The total length and percentage of the relevant intersections logged.
Sub-sampling Techniques and sample preparation	• If core, whether cut or sawn and whether quarter, half or all core taken. • If non-core, whether riffled, tube sampled, rotary split, etc. and whether sampled wet or dry. • For all sample types, the nature, quality and appropriateness of the sample preparation technique. • Quality control procedures adopted for all sub-sampling stages to maximise representivity of samples. • Measures taken to ensure that the sampling is representative of the in situ material collected, including for instance results for field duplicate/second-half sampling. • Whether sample sizes are appropriate to the grain size of the material being sampled.	• Samples were split from dry, 1m bulk sample via a cone splitter directly from the cyclone. • The QC procedure adopted through the process includes: • Field duplicates were collected at a rate of 1: 50, these were collected during RC drilling at the same time as the primary sample. • OREAS certified material (CRM) was inserted at a rate of 1:50, the grade ranges of the CRM’s were selected based on grade populations. • 2-3kgs of sample was submitted to the laboratory. • Samples oven dried then pulverized in LM5 mills to 85% passing 75micron. • All samples were analysed for Au using the Au-AA26 technique which is a 50g lead collection fire assay.
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. • For geophysical tools, spectrometers, handheld XRF instruments, etc., the parameters used in determining the analysis including instrument make and model, reading times, calibrations factors applied and their derivation, etc. • Nature of quality control procedures adopted (e.g. standards, blanks, duplicates, external laboratory checks) and whether acceptable levels of accuracy (i.e. lack of bias) and precision have been established.	• Drill samples were submitted to ALS (Perth). All samples were analysed by a 50g fire assay (AAS finish) which is a total digest assay technique. Due to industry-wide pressure on fire-assay capacity, some prepped samples were transported to ALS Kalgoorlie for fire assay. • Field duplicates were collected at a rate of 1:50 with CRM’s inserted at a rate of 1:50 also. The grade ranges of the CRM’s were selected based on grade populations.
Verification of sampling and assaying	• The verification of significant intersections by either independent or alternative company personnel. • The use of twinned holes. • Documentation of primary data, data entry procedures, data verification, data storage (physical and electronic) protocols. • Discuss any adjustment to assay data.	• Drilling results are cross checked by company geologists • Data is recorded digitally at the project within MicroMine Geobank software, assay results are received digitally. • All data is stored within DataShed SQL Database.
Location of data points	• Accuracy and quality of surveys used to locate drill holes (collar and down-hole surveys), trenches, mine workings and other locations used in Mineral Resource estimation. • Specification of the grid system used. • Quality and adequacy of topographic control.	• Initial drill hole location is initially recorded with a handheld Garmin GPS (+/- 3m). A Reflex EZ North Seeking Gyro is used to record the deviation of the drill holes (+/- 1deg)

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Criteria	JORC Code explanation	Commentary
Data spacing and distribution	• Data spacing for reporting of Exploration Results. • Whether the data spacing and distribution is sufficient to establish the degree of geological and grade continuity appropriate for the Mineral Resource and Ore Reserve estimation procedure(s) and classifications applied. • Whether sample compositing has been applied.	• Refer to tables within text for data spacing. • Holes drilled within this program are not considered to be of suitable data spacing for use in Mineral Resource or Ore Reserve estimation
Orientation of data in relation to geological structure	• Whether the orientation of sampling achieves unbiased sampling of possible structures and the extent to which this is known, considering the deposit type. • If the relationship between the drilling orientation and the orientation of key mineralised structures is considered to have introduced a sampling bias, this should be assessed and reported if material.	• The drilling was orientated perpendicular to the perceived strike of the mineralised structures, with holes testing west-dipping structures in the mafic and layered intrusive units drilled to the east, and those testing near the interpreted east-dipping granodiorite contact drilled to the west. Inclined RC holes (-60°) are considered to be appropriate to the dip of the mineralised structure creating minimal sampling bias.
Sample security	• The measures taken to ensure sample security.	• Calico samples are sealed into green/poly weave bags and cable tied. These are then sealed in bulka bags and transported to the laboratory in Perth by company staff or contractors or established freight companies.
Audits or reviews	• The results of any audits or reviews of sampling techniques and data.	• Drilling results are cross checked by company geologists

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Section 2 Reporting of Exploration Results

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

Criteria	JORC Code explanation	Commentary
Mineral tenement and land tenure status	• Type, reference name/number, location and ownership including agreements or material issues with third parties such as joint ventures, partnerships, overriding royalties, native title interests, historical sites, wilderness or national park and environmental settings. • The security of the tenure held at the time of reporting along with any known impediments to obtaining a licence to operate in the area.	• M57/217, M57/98 and E57/888. These tenements are held under Gateway Mining Ltd 100%. • No Native Title claims are lodged over the tenements
Exploration done by other parties	• Acknowledgment and appraisal of exploration by other parties.	• Gold was discovered in the district during the gold rush era, first records of gold won from small-scale, high-grade workings include the Montague Mining Centre (1904-13). Renewed interest in the late 1960's included base metal exploration carried out within exposed stratigraphy of the Montague Ranges (Bungarra Ranges), exploration interest that broadened with the release of the Sandstone 1:250,000 aeromagnetic sheet in 1970 resulting in the staking of favourable magnetic anomalies by exploration companies. • Early explorers in the Montague Ranges included Anaconda Australia Inc. (1966-67), followed by International Nickel Australia (1971-75) evaluating a Gabbro - banded differentiated basic complex believed prospective for copper and/or nickel such as the Dulith Gabbro, USA. Strong geophysical and mineralised anomalism was encountered, however, copper-zinc enrichment was also encountered in adjacent felsic stratigraphy at Ed's Bore prospect, which was followed-up by CRA Exploration (1983-1990) to intersect polymetallic VMS enrichments at Bevan prospect (not substantively pursued). • At Montague, Western Mining Corporation (1976) conducted investigations for copper and gold including soil sampling and IP surveying, which was followed by CRA Exploration (1984-89) working concurrently with AMOCO Minerals Australia Company (1984) and Clackline Refractories Ltd (from 1985 - to later become Herald Resources) assessing/purchasing historic mine areas from Mr W.J. Griffiths of Sandstone. RAB drilling penetrating transported cover resulted in the virgin discoveries of NE Pit by AMOCO and Whistler deposit by CRA. Later noted explorers included Dalrymple Resources NL (1987-1990) intersecting gold at the Armada (Twister) prospect, and Arimco Mining (1990- 98) intersecting gold at Lyle prospect, Victory West prospect, and copper at The Cup prospect (not substantively pursued). • The Montague Mining Centre produced approximately 150,000oz of gold commencing in 1986 at Caledonian and NE Pits (Clackline), and continued at Montague Boulder from 1988 (Herald), and was to close in 1993 after completion of the Rosie Castle open cut (Herald). Whistler open cut was mined from November 1990 (Polaris Pacific NL) and ore toll treated through the Herald mill. Little attention was paid to mineralisation other than gold. Gateway Mining in joint venture with Herald Resources continued exploration of the MontagueMining Centre, Gateway also targeting poly-metallicintrusion

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Criteria	JORC Code explanation	Commentary
		related - VMS models in the district from 2006. • Airport, Airport Sth, S Bend, Rosie Nth, Rosie Sth mineralisation was discovered by Gateway Mining between 2007 and 2011 in RAB drilling and later defined by RC drilling.
Geology	• Deposit type, geological setting and style of mineralisation.	• Gateways’s Gidgee Project is located in the Gidgee district in the Archean Yilgarn Craton of Western Australia approximately 630km NE of Perth and 70km north from the township of Sandstone on the eastern central portion of the Gum Creek Greenstone Belt, of the Southern Cross Province. Metamorphic grade of the Gum Creek Greenstone Belt is estimated to be low- grade greenschist facies. • Project lithology includes basalt/ash tuff/dolerite/gabbro, the Montague Granodiorite sub-volcanic intrusion (calc-alkaline - FI), dacite volcanic flow/s (FI), volcaniclastic sequences of felsic composition and epiclastic conglomerates, ultramafic intrusives and external orogenic granite plutons. Key regional characteristics of a Volcanic Arc Extensional Basin include calc- alkaline bimodal volcanic sequences associated with extensive iron formations. Later ENE-WSW orogenic compression event is characterised by NNW regional scale faults/unconformities, NNW shearing and folding, slaty cleavage has developed within sediments near a tight syncline fold closure within the NE area of the project.
Drill hole Information	• A summary of all information material to the understanding of the exploration results including a tabulation of the following information for all Material drill holes: o easting and northing of the drill hole collar o elevation or RL (Reduced Level – elevation above sea level in metres) of the drill hole collar o dip and azimuth of the hole o down hole length and interception depth o hole length. • 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.	• Exploration drill results from recent drilling, and associated details are contained in Table 1 of this release. Historic intersections mentioned in this release have been previously released by Gateway in various ASX releases, which can be accessed on the Gateway Mining Ltd website
Data aggregation methods	• In reporting Exploration Results, weighting averaging techniques, maximum and/or minimum grade truncations (eg cutting of high grades) and cut-off grades are usually Material and should be stated. • 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	• Significant intersections are calculated as a minimum of 1m greater than 1.0g/t Au with a maximum of 4m of internal dilution • No high-grade cut-off has been applied

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Criteria JORC Code explanation Commentary	Criteria JORC Code explanation Commentary	Criteria JORC Code explanation Commentary
	shown in detail. • The assumptions used for any reporting of metal equivalent values should be clearly stated.
Relationship between mineralisation widths and intercept lengths	• These relationships are particularly important in the reporting of Exploration Results. • If the geometry of the mineralisation with respect to the drill hole angle is known, its nature should be reported. • 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’).	• The drilling was orientated perpendicular to the perceived strike of the mineralised structures targeted. Inclined RC holes (-60°) are perpendicular to the dip of the mineralised structure creating minimal sampling bias.
Diagrams	• Appropriate maps and sections (with scales) and tabulations of intercepts should be included for any significant discovery being reported These should include, but not be limited to a plan view of drill hole collar locations and appropriate sectional views.	• Appropriate maps are included in the announcement
Balanced reporting	• Where comprehensive reporting of all Exploration Results is not practicable, representative reporting of both low and high grades and/or widths should be practiced to avoid misleading reporting of Exploration Results.	• The accompanying document is considered to be a balanced report with a suitable cautionary note.
Other substantive exploration data	• Other exploration data, if meaningful and material, should be reported including (but not limited to): geological observations; geophysical survey results; geochemical survey results; bulk samples – size and method of treatment; metallurgical test results; bulk density, groundwater, geotechnical and rock characteristics; potential deleterious or contaminating substances.	• The area has been covered by detailed ground gravity and airborne magnetic surveys. The Montague Dome system was recently covered by a systematic fine-fraction soil sampling program which highlighted a series of anomalies corresponding to the mineralisation intercepted by this drilling.
Further work	• The nature and scale of planned further work (eg tests for lateral extensions or depth extensions or large-scale step-out drilling). • Diagrams clearly highlighting the areas of possible extensions, including the main geological interpretations and future drilling areas, provided this information is not commercially sensitive.	• Further step-out RC and diamond drilling targeting the lower structure down dip and along strike of high-grade gold intercepts. Potential systematic infill of these results may be warranted to begin evaluation of the Mineral Resource potential

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