Announcement PDF ASX Announcement & Media Release | ASX: KAL | 30 September 2025 RC drilling commences at Wessex, continuing to Lighthorse. Kalgoorlie Gold Mining (ASX:KAL) (‘KalGold’ or ‘the Company’) is pleased to announce the Company’s largest Reverse Circulation (RC) drill program at the Pinjin Gold Project commenced yesterday. The program comprises 50 RC holes for approximately 6,200 m. The program aims to confirm primary gold mineralisation beneath multi-kilometre zones of gold mineralisation and anomalism defined by the Company’s broad aircore drill programs. Drilling is underway at Wessex where seven holes (1,050 m) will test beneath thick, shallow gold mineralisation adjacent to the (off-tenure) Anglo Saxon open pit gold mine. The open pit owner, Hawthorn Resources, is currently drilling to improve its resource and explore mining opportunities. Within the week, the rig will move to Lighthorse to commence a program of 40 drill holes (4,750 m) to test the full 1.6 km strike extent of Lighthorse. Following this, three drill holes (400 m) will test beneath strong arsenic mineralisation associated with gold anomalism and silica cap development at Providence South. The entire program is expected to take up to six weeks to complete. We are also pleased to report that all preparations for the diamond drilling to test a conceptual intersection target at Kirgella Gift and Providence are complete with drilling scheduled to commence shortly. For further information regarding KalGold, please visit www.kalgoldmining.com.au or contact: Matt Painter Managing Director and Chief Executive Officer Tel +61 8 6002 2700 Follow KalGold on social media. Kalgoorlie Gold Mining Limited | ACN 645 666 164 Suite 2, 1209 Hay St, West Perth WA 6005, Australia T: +61 (0)8 6002 2700 | E: info@kalgoldmining.com.au | www.kalgoldmining.com.au KalGold’s largest RC program commences next week RC About the Pinjin Project The Pinjin Gold Project is located in a Tier One location approximately 140 km northeast of Kalgoorlie Boulder and covers a substantial portion of the southern part of the prolific Laverton Tectonic Zone (LTZ). To the north, this major crustal structure hosts some of the Eastern Goldfields’ largest gold mines and deposits. The project is strategically located near Ramelius Resources’ (ASX: RMS) Rebecca Gold Project, where a recent pre-feasibility study outlined a path to gold production by 2027. Figure 3 – Location map of the Lighthorse gold prospect at KalGold’s Pinjin Project around 140 km northeast of KalgoorlieBoulder. The project is situated approximately 25 km north of Ramelius Resources’ (ASX: RMS) Rebecca Gold Project. Also shown are KalGold’s JORC Code (2012) Inferred Mineral Resources, the outcropping La Mascotte deposit 35 km east of Kalgoorlie, and the Kirgella Gift and Providence deposits from only 3m depth at Pinjin. Projection: MGA 94 Zone 51. Authorised for lodgement by the Board of Kalgoorlie Gold Mining Limited. Page 2 KalGold’s largest RC program commences next week RC About KalGold ASX-listed resources company Kalgoorlie Gold Mining (KalGold, ASX: KAL) is a proven, low-cost gold discoverer with a large portfolio of West Australian projects and a total gold resource in excess of 214,000 oz. KalGold prides itself on defining shallow, potentially open-pittable gold resources at very low costs, currently less than A$4.60 per ounce of gold2. Current focus includes: • The Pinjin Project within the 30 Moz Laverton Tectonic Zone (host to Sunrise Dam, Granny Smith, Rebecca, Anglo Saxon, and Wallaby projects) is located only 25 km north along strike from Ramelius Resources (ASX: RMS) Rebecca Gold Project. A first JORC Code (2012) Inferred Mineral Resource Estimate at Kirgella Gift and Providence (2.34 Mt @ 1.0 g/t Au for 76,400 oz1) represents the first area targeted at Pinjin, with many more targets scheduled for testing. The company aims to define further resources as these targets are tested. Some tenure is the subject of a farm-in over two years. Between this tenure and KalGold’s own tenure and applications, the Company has established a significant presence in a strategic and important gold producing region. • The Bulong Taurus Project, 35 km east of KalgoorlieBoulder. Contains the outcropping La Mascotte gold deposit where KalGold has defined a JORC Code (2012) Inferred Mineral Resource Estimate of 3.61 Mt @ 1.19 g/t Au for 138,000 oz2, plus a series of satellite prospects and historic workings of the Taurus Goldfield. Work continues at the project. 1 See KalGold ASX release, “First Kirgella Gift Inferred Resource of 76,400oz from 3m”. 25 July 2024. 2 See KalGold ASX release, “La Mascotte gold deposit: First JORC (2012) Mineral Resource of 138,000 oz Au”. 7 March 2023. Page 3 KalGold’s largest RC program commences next week RC CAUTIONARY NOTE REGARDING FORWARD-LOOKING INFORMATION This news release contains forward-looking statements and forward-looking information within the meaning of applicable Australian securities laws, which are based on expectations, estimates and projections as of the date of this news release. This forward-looking information includes, or may be based upon, without limitation, estimates, forecasts and statements as to management’s expectations with respect to, among other things, the timing and amount of funding required to execute the Company’s exploration, development and business plans, capital and exploration expenditures, the effect on the Company of any changes to existing legislation or policy, government regulation of mining operations, the length of time required to obtain permits, certifications and approvals, the success of exploration, development and mining activities, the geology of the Company’s properties, environmental risks, the availability and mobility of labour, the focus of the Company in the future, demand and market outlook for precious metals and the prices thereof, progress in development of mineral properties, the Company’s ability to raise funding privately or on a public market in the future, the Company’s future growth, results of operations, restrictions caused by COVID-19, performance, and business prospects and opportunities. Wherever possible, words such as “anticipate”, “believe”, “expect”, “intend”, “may” and similar expressions have been used to identify such forward-looking information. Forward-looking information is based on the opinions and estimates of management at the date the information is given, and on information available to management at such time. Forward-looking information involves significant risks, uncertainties, assumptions, and other factors that could cause actual results, performance, or achievements to differ materially from the results discussed or implied in the forward-looking information. These factors, including, but not limited to, fluctuations in currency markets, fluctuations in commodity prices, the ability of the Company to access sufficient capital on favourable terms or at all, changes in national and local government legislation, taxation, controls, regulations, political or economic developments in Australia or other countries in which the Company does business or may carry on business in the future, operational or technical difficulties in connection with exploration or development activities, employee relations, the speculative nature of mineral exploration and development, obtaining necessary licenses and permits, diminishing quantities and grades of mineral reserves, contests over title to properties, especially title to undeveloped properties, the inherent risks involved in the exploration and development of mineral properties, the uncertainties involved in interpreting drill results and other geological data, environmental hazards, industrial accidents, unusual or unexpected formations, pressures, cave-ins and flooding, limitations of insurance coverage and the possibility of project cost overruns or unanticipated costs and expenses, and should be considered carefully. Many of these uncertainties and contingencies can affect the Company’s actual results and could cause actual results to differ materially from those expressed or implied in any forward-looking statements made by, or on behalf of, the Company. Prospective investors should not place undue reliance on any forward-looking information. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions, the Company cannot assure prospective purchasers that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither the Company nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information. The Company does not undertake, and assumes no obligation, to update or revise any such forward-looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law. No stock exchange, regulation services provider, securities commission or other regulatory authority has approved or disapproved the information contained in this news release. COMPETENT PERSON STATEMENT The information in this report that relates to Exploration Targets, Exploration Results, Mineral Resources or Ore Reserves is based on information compiled by Dr Matthew Painter, a Competent Person who is a Member of the Australian Institute of Geoscientists. Dr Painter is the Managing Director and Chief Executive Officer of Kalgoorlie Gold Mining Limited (KalGold) 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 Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves. Dr Painter consents to the inclusion in the report of the matters based on his information in the form and context in which it appears. Dr Painter holds securities in Kalgoorlie Gold Mining Limited. EXPLORATION RESULTS The references in this announcement to Exploration Results were reported in accordance with Listing Rule 5.7 in the announcements titled: • Sub-Audio Magnetics (SAM) geophysical data guides upcoming RC drill program at Pinjin. Diamond Drilling at Kirgella Gift and Providence to commence soon, 26 August 2025. • Lighthorse Strike Extended to 1,450m. Extensive RC Program Beginning Shortly, 15 July 2025. • SAM geophysical survey commencing around Lighthorse, and exploration update, 6 June 2025 • Farm-in at Pinjin Gold Project completed, 29 May 2025. • Quarterly activities report for the quarter ending 31 March 2025, 30 April 2024 • Lighthorse RC program confirms primary gold mineralisation at depth, follow up drilling imminent, 15 April 2025 Page 4 KalGold’s largest RC program commences next week RC • • • • • • • • • • • • Aircore drilling to test Lighthorse strike extensions in April, 10 March 2025 Multi-kilometre target areas along strike at KalGold’s Lighthorse discovery, 17 February 2025 Lighthorse gold discovery follow-up RC drilling to commence first week of March, 13 February 2025 ‘Lighthorse’ gold discovery at Pinjin: thick, high-grade gold intercepted at new greenfields find, 7 February 2025 First-pass aircore drilling at Kirgella West: broad gold anomalism and mineralisation over 1,200m strike, 18 December 2024 Quarterly activities report for the quarter ending 30 September 2024, 30 October 2024 More thick, shallow gold intercepts at Pinjin extend Wessex target to 2 km strike length, 9 October 2024 Thick gold intercepts from initial drilling at Wessex near Anglo Saxon gold mine, 23 May 2024 Providence: North plunging shallow gold mineralisation has significant potential, 7 December 2023 Shallow, high-grade results extend Kirgella Gift and Providence corridor to over 1,150m of strike, 25 October 2023 Thick, shear-hosted gold mineralisation intercepted at Kirgella Gift, 8 June 2023 KalGold farms-in to Kirgella gold tenements and acquires Rebecca West tenure at Pinjin, 23 May 2023. The Company confirms that it is not aware of any new information or data that materially affects the information included in the previous market announcements noted above. MINERAL RESOURCE ESTIMATES The references in this announcement to Mineral Resource estimates were reported in accordance with Listing Rule 5.8 in the following announcements: • • La Mascotte gold deposit: First JORC (2012) Mineral Resource of 138,000 oz Au, 7 March 2023. First Kirgella Gift Inferred Resource of 76,400 oz from 3m, 5 July 2024. In accordance with ASX Listing Rule 5.23, the Company confirms that it is not aware of any new information or data that materially affects the information included in the previous market announcement noted above and that all material assumptions and technical parameters underpinning the Mineral Resource estimates in the previous market announcements continue to apply. Page 5