Tillkännagivande • Jun 16
American Tungsten & Antimony Ltd Announces Resignation of Chris Gregory, Non- Executive Director, from the Board, Effective 15 June 2026 American Tungsten & Antimony Ltd. announced that Non- Executive Director Chris Gregory has resigned from the Board, effective 15 June 2026 . Mr. Gregory has resigned from the Board to focus on his other business interests and commitments. Tillkännagivande • May 19
American Tungsten and Antimony Ltd has filed a Follow-on Equity Offering in the amount of AUD 10.35 million. American Tungsten and Antimony Ltd has filed a Follow-on Equity Offering in the amount of AUD 10.35 million.
Security Name: Ordinary Shares
Security Type: Common Stock
Securities Offered: 147,857,143
Price\Range: AUD 0.07
Discount Per Security: AUD 0.0042
Transaction Features: Subsequent Direct Listing Tillkännagivande • May 10
American Tungsten & Antimony Ltd. Appoints David Bernhardt as Chairman of Strategic Advisory Board American Tungsten & Antimony Ltd. announced the company has appointed former U.S. Secretary of the Interior David Bernhardt as Chairman of the Company's Strategic Advisory Board. Secretary Bernhardt served as Secretary of the Interior in President Trump's first administration, where he was responsible for oversight of approximately 500 million acres of federal land, including permitting, resource development and environmental management frameworks central to U.S. mining and energy sectors. The appointment of Secretary Bernhardt is expected to strengthen AT4's capabilities in permitting, policy alignment and stakeholder engagement across multiple agencies, as he provides direct insight into regulatory processes and facilitates engagement at the federal level. Tillkännagivande • Mar 11
American Tungsten & Antimony Ltd. Reports High-Grade Antimony Discovery At Little Emma Prospect in Utah American Tungsten & Antimony Ltd. reported high-grade antimony results from its first drill holes at the Little Emma Prospect within the Company's 100%-owned Antimony Canyon Project in Utah, marking a strong start to its maiden drilling program and reinforcing the potential for a large-scale antimony system in the United States. The initial drilling program intersected shallow, high-grade stibnite mineralization, providing early confirmation of the Company's geological model and demonstrating encouraging continuity within the mineralized system. Key intercepts include: 11.03m @ 3.1% Sb from 25.91m, including 2.62m @ 12.54% Sb from 29.2m; 8.47m @ 2.67% Sb from 31.15m, including 2.2m @ 9.69% Sb from 36.88m; 2.14m @ 3.02% Sb from 40.23m. The Little Emma Prospect is one of more than 20 historic antimony mines located within AT4's patented claim block at Antimony Canyon, highlighting the district-scale exploration potential across the property. These results follow the Company's ASX announcement dated 10 March 2026, which outlined the encouraging results from the initial drilling campaign. Antimony is classified by the U.S. Government as a critical mineral essential for national security, with applications in defense systems, semiconductors, batteries, flame retardants and advanced manufacturing. The United States currently relies heavily on foreign sources for antimony supply, with China historically dominating global production. The emergence of a significant domestic antimony resource would represent an important development for U.S. supply chain security. Tillkännagivande • Feb 06
American Tungsten & Antimony Delivers Antimony Ingots from Antimony Canyon Project in Utah American Tungsten & Antimony Ltd. announced that it has produced its first antimony ingots from material sourced from its Antimony Canyon Project (ACP) in Utah, as part of metallurgical testwork to support ongoing project evaluation. The work was conducted at an independent third-party metallurgical facility and provides proof-of-concept processing following delivery of a Metso Ausmelt concept study and plant design. Tillkännagivande • Jan 23
American Tungsten & Antimony Ltd Announces Appointment of Graeme Morissey as Chief Financial Officer, Effective January 23, 2026 American Tungsten & Antimony Ltd. announced the appointment of Graeme Morissey as Chief Financial Officer, effective January 23, 2026. Mr. Morissey served as Chief Financial Officer for Warriedar Resources Limited and played a pivotal role progressing the acquisition of Warriedar by Capricorn Metals Limited pursuant to a scheme of arrangement valued at over $300 million. Mr. Morissey brings extensive experience in governance of listed explorers and developers gained over previous roles in global accounting firms EY, KPMG and Grant Thornton, fulfilling the role of Director. He has assisted in managing the risks and opportunities associated with developing Warriedar’s flagship Golden Range and Fields Find gold project from early-stage exploration to a multi-million ounce Tier 1 styled mineral resource estimate. Mr. Morissey is a Chartered Accountant (CA) and a member of the Australian Institute of Company Directors (MAICD). He holds a Bachelor of Commerce from McMaster University in Canada. He has served as CFO for early-stage explorers, developers, and producers, accumulating extensive managerial experience in equity capital markets, debt financing, mergers and acquisitions, and local and cross-jurisdictional mining and exploration operations (including the Americas and Africa). Tillkännagivande • Jan 17
American Tungsten & Antimony Ltd Announces Drilling Update American Tungsten & Antimony Ltd. provided an update on the maiden diamond drilling programme at its 100% owned Antimony Canyon Project (ACP) in Utah, USA. The Company reported highly encouraging visual results from the first three holes of its maiden drilling campaign at the Antimony Canyon Project. The current programme targets the Company's 100% owned Patented Claims, which provide AT4 with secure land tenure and streamlined permitting. The initial drilling has focused on the Emma Claim, a key historical working within the broader claim package. Drilling Details: Holes ACP26DD001and ACP26DD002; The first two holes (ACP26DD001 and ACP26DD002) were designed to establish stratigraphic control on the Emma Claim and were drilled at a steep dip of -80 degrees. Both holes intersected the target mineralised horizon, confirming the system's continuity and significant width. Drilling has confirmed the presence of a substantial mineralised zone characterised by massive to disseminated stibnite (antimony sulphide): ACP26DD001 (Hole 1) intersected a mineralised zone approximately 42 m wide, with the main mineralised horizon 19 m thick (approximately true thickness). ACP26DD002 (Hole 2), designed to test lateral continuity to the northeast, intersected a zone of pervasive stibnite (up to 7%) and pyrite, more than 63 m thick (approximately true thickness). Hole 2 encountered ground conditions significantly more complex than in Hole 1, characterised by intense, pervasive alteration. The hole advanced to a depth of approximately 77 m before the drill rods bogged downhole in swelling clays developed along the basal contact with the underlying potentially mineralised conglomerate (as observed in Hole 1). The Company intends to continue drilling this position to design depth once appropriate recovery equipment is available. Most significantly, the final recovered intervals (74.37 m - 76.20 m) contained 2% Realgar and 2% Orpiment, low-temperature arsenic sulphides that typically form on the margins of the hottest parts of epithermal systems. Their presence in Hole 2, combined with the intense alteration that led to the bogged rods, strongly suggests the drilling has vectored into the halo of the primary feeder structure. Tillkännagivande • Oct 30
Trigg Minerals Limited has filed a Follow-on Equity Offering in the amount of AUD 2.5 million. Trigg Minerals Limited has filed a Follow-on Equity Offering in the amount of AUD 2.5 million.
Security Name: Ordinary Shares
Security Type: Common Stock
Securities Offered: 16,666,667
Price\Range: AUD 0.15
Transaction Features: Subsequent Direct Listing Tillkännagivande • Oct 24
Trigg Minerals Limited, Annual General Meeting, Nov 28, 2025 Trigg Minerals Limited, Annual General Meeting, Nov 28, 2025. Location: suite 2, 68 hay street, subiaco wa 6008, Australia Tillkännagivande • Sep 24
Trigg Minerals Limited has filed a Follow-on Equity Offering in the amount of AUD 5 million. Trigg Minerals Limited has filed a Follow-on Equity Offering in the amount of AUD 5 million.
Security Name: Ordinary Shares
Security Type: Common Stock
Securities Offered: 55,555,556
Price\Range: AUD 0.09
Security Features: Attached Options
Transaction Features: Subsequent Direct Listing Tillkännagivande • Jul 03
Trigg Minerals Limited has filed a Follow-on Equity Offering in the amount of AUD 12.5 million. Trigg Minerals Limited has filed a Follow-on Equity Offering in the amount of AUD 12.5 million.
Security Name: Ordinary Shares
Security Type: Common Stock
Securities Offered: 147,058,824
Price\Range: AUD 0.085
Discount Per Security: AUD 0.0051
Transaction Features: Subsequent Direct Listing Tillkännagivande • Jun 14
Trigg Minerals Limited Appoints David J. Fourie as Its Net Zero Expert Antimony Technical Advisor, Effective 1 July 2025 Trigg Minerals Limited announced the appointment of David J. Fourie, Pr. Eng., MBA as its Net Zero Expert Antimony Technical Advisor, effective 1 July 2025. Mr. Fourie is an extractive metallurgist with more than 25 years' experience across pyrometallurgy, smelter design and strategic project execution. As former Chief Operating Officer (COO) at Strategic & Precious Metals Processing (SPMP) in Oman, he led the ramp-up and technical operations of the world's largest antimony roaster outside China widely recognised as the first `clean plant' built to European environmental standards. Mr. Fourie has held senior positions at global engineering and resource firms including Mintek, Hatch and Tronox, and now operates as an independent consultant. Mr. Fourie has been engaged as a technical consultant to advise Trigg on smelter design and development strategy. He specialises in strategic metal flowsheets and smelter optimisation, advising clients through all stages of development from scoping and feasibility through to permitting, commissioning and steady-state operations. His appointment represents a positive step in Trigg's goal of building a vertically integrated, net zero supply chain for antimony in the western world leveraging Mr. Fourie's combination of technical, ESG and commercial experience in clean strategic metals processing. Tillkännagivande • Mar 20
Trigg Minerals Limited (ASX:TMG) agreed to acquire Exploration Licenses EL 9594, EL 9655, and EL 9653 from STANFORD ROCKS PTY LTD for AUD 0.50 million. Trigg Minerals Limited (ASX:TMG) agreed to acquire Exploration Licenses EL 9594, EL 9655, and EL 9653 from STANFORD ROCKS PTY LTD for AUD 0.50 million on March 18, 2025. A cash consideration of AUD 0.25 million will be paid by Trigg Minerals Limited and also issue 8,064,516 shares to STANFORD ROCKS PTY LTD.
The transaction is subject to approval by regulatory board / committee, approval of offer by acquirer shareholders, consummation of due diligence investigation and third party approval needed. The end date for satisfaction or waiver of the conditions precedent is 1 July 2025, with the shareholder approval at a General Meeting targeted for April 2025. Completion will occur on the date that is two business days after the satisfaction or waiver of the last of the conditions precedent. Tillkännagivande • Mar 13
1269280 WA Pty Ltd agreed to acquire K2O Minerals Pty Ltd from Trigg Minerals Limited (ASX:TMG) for AUD 0.06 million. 1269280 WA Pty Ltd entered into a Binding Heads of Agreement to acquire K2O Minerals Pty Ltd from Trigg Minerals Limited (ASX:TMG) for AUD 0.06 million on March 12, 2025. A cash consideration of AUD 0.06 million will be paid by 1269280 WA Pty Ltd. As part of consideration, AUD 0.06 million is paid towards common equity of K2O Minerals Pty Ltd.
The expected completion of the transaction is in 14 days. Tillkännagivande • Mar 08
Trigg Minerals Limited Appoints Andre Booyzen as Director Trigg Minerals Limited appointed Andre Booyzen as Director, date of appointment of 1 March 2025. Tillkännagivande • Feb 10
Trigg Minerals Limited Appoints Andre Booyzen as A Non-Executive Director, Effective 1 March 2025 Trigg Minerals Limited announced it has appointed former Mandalay Resources Vice President Andre Booyzen as a Non-Executive Director, effective 1 March 2025, following his recent appointment as a strategic advisor to the Company. Mr. Booyzen previously served Vice President of Mandalay Resources, where he had full strategic and operational control including product sales, off takes and funding negotiations at the Costerfield gold-antimony mine in Victoria, currently Australia's only producer of antimony concentrate. Mr. Booyzen also served on the board of the Minerals Council of Australia (Victoria) for more than 5 years and was Chairman for 3 of those. His experience in overseeing mine operations, development, and production at Costerfield aligns well with Trigg's focus on progressing Wild Cattle Creek. Mr. Booyzen is an experienced mine operator and leader and has more than 25 years of experience in operational, senior and executive roles, and is a specialist in antimony mining. He brings extensive experience in mine development, operational strategy, and off-take agreements, making his appointment to the Board particularly valuable as Trigg advances its portfolio of antimony projects in NSW. This includes the Wild Cattle Creek deposit at its Achilles Project, which has a JORC 2012 MRE 2 containing 1.52mt at 1.97% containing 29.9 tonnes of antimony being Australia's highest grade undeveloped primary antimony deposit with multiple high-grade shoots remaining open along strike and down dip showcasing significant potential for expansion, as well as its Taylors Arm, Spartan and newly acquired Bukkula Mine assets. In addition to his non-executive role, Mr. Booyzen will provide leadership for key workstreams at Trigg, supporting the next phase of development studies and the planned resource expansion at Wild Cattle Creek. His expertise in offtake agreements and global antimony markets, gained through his many years in the antimony industry, will be invaluable as Trigg develops its project financing strategy. Tillkännagivande • Feb 05
Trigg Minerals Limited (ASX:TMG) agreed to acquire Bukkulla Antimony Project, North Nundle Antimony Project and Tia Antimony Project . Trigg Minerals Limited (ASX:TMG) agreed to acquire Bukkulla Antimony Project, North Nundle Antimony Project and Tia Antimony Project on February 4, 2025. Tillkännagivande • Dec 06
Trigg Minerals Limited has completed a Follow-on Equity Offering in the amount of AUD 5 million. Trigg Minerals Limited has completed a Follow-on Equity Offering in the amount of AUD 5 million.
Security Name: Ordinary Shares
Security Type: Common Stock
Securities Offered: 151,515,152
Price\Range: AUD 0.033
Discount Per Security: AUD 0.00198
Transaction Features: Subsequent Direct Listing Tillkännagivande • Oct 18
Trigg Minerals Limited has completed a Follow-on Equity Offering in the amount of AUD 2.5 million. Trigg Minerals Limited has completed a Follow-on Equity Offering in the amount of AUD 2.5 million.
Security Name: Ordinary Shares
Security Type: Common Stock
Securities Offered: 100,000,000
Price\Range: AUD 0.025
Discount Per Security: AUD 0.0015
Security Features: Attached Options
Transaction Features: Subsequent Direct Listing Tillkännagivande • Oct 08
Trigg Minerals Limited, Annual General Meeting, Nov 15, 2024 Trigg Minerals Limited, Annual General Meeting, Nov 15, 2024. Tillkännagivande • Sep 20
Trigg Minerals Limited (ASX:TMG) agreed to acquire Taylors Arm and Spartan Antimony Projects in Northern NSW from Bullseye Gold Pty Ltd Trigg Minerals Limited (ASX:TMG) agreed to acquire Taylors Arm and Spartan Antimony Projects in Northern NSW from Bullseye Gold Pty Ltd for AUD 0.85 million on September 20, 2024. The consideration consists of 106.25 million common equity of Trigg Minerals Limited to be issued for assets of Taylors Arm and Spartan Antimony Projects in Northern NSW.
The transaction is subject to approval by regulatory board / committee, approval of offer by acquirer shareholders and consummation of due diligence investigation. Tillkännagivande • Aug 30
Trigg Minerals Limited Announces Management Changes Trigg Minerals Limited announced the appointment of Nicholas Katris as Non-Executive Director and Company Secretary, following the immediate resignation of Stephen Ross as a Non-Executive Director and David McEntaggart as Company Secretary. Mr. Katris is a Chartered Accountant with more than 15 years of experience in the resources sector. He has held various executive finance and company secretarial roles across Australia, Brazil, Canada, and
Africa. Mr. Katris brings extensive experience in corporate advisory, and public company management. He has worked with several publicly-listed lithium, nickel, and gold companies during exploration and project development. Currently, Mr. Katris serves as the Company Secretary for Perpetual Resources Limited and Leeuwin Metals Ltd. His appointment comes as Trigg Minerals increases its focus on the Drummond Epithermal Gold Project in Northern Queensland and continued search for complementary strategic projects. As a result of the resignation of Mr. Ross, the Company further advises that Resolution 11 included within the Notice of Meeting lodged with ASX on 16 August 2024 has been withdrawn from the General Meeting to be held on 16 September 2024. Tillkännagivande • Jul 24
Trigg Minerals Limited Appoints Bishoy Habib as Director Trigg Minerals Limited appointed Bishoy Habib as Director. Date of appointment is 24 July 2024. Tillkännagivande • Jul 05
Trigg Minerals Limited has filed a Follow-on Equity Offering in the amount of AUD 0.6 million. Trigg Minerals Limited has filed a Follow-on Equity Offering in the amount of AUD 0.6 million.
Security Name: Ordinary Shares
Security Type: Common Stock
Securities Offered: 37,320,610
Price\Range: AUD 0.008
Security Features: Attached Options
Security Name: Ordinary Shares
Security Type: Common Stock
Securities Offered: 37,679,390
Price\Range: AUD 0.008
Security Features: Attached Options
Transaction Features: Subsequent Direct Listing Tillkännagivande • Mar 07
Trigg Minerals Limited (ASX:TMG) completed the acquisition of 90% stake in Four new tenements in northern Queensland from Boadicea Resources Ltd (ASX:BOA). Trigg Minerals Limited (ASX:TMG) entered into a binding term sheet to acquire 90% stake in Four new tenements in northern Queensland from Boadicea Resources Ltd (ASX:BOA) for AUD 0.32 million on November 28, 2023. Trigg Minerals Limited will pay for AUD 20,000 in cash and issue for AUD 300,000 in TMG shares to BOA as consideration for the 90% interests in the licenses. The transaction is subject to certain conditions precedent, including regulatory consents or approvals (if any), due diligence. Completion of the transaction is expected to occur in late February 2024.
Trigg Minerals Limited (ASX:TMG) completed the acquisition of 90% stake in Four new tenements in northern Queensland from Boadicea Resources Ltd (ASX:BOA) on March 7, 2024. The transfer of ownership of the Tenements is subject to final approval by the Queensland Government Department of Resources. In the interim, the companies have executed a deed under which Trigg will assume the operating rights and expenditure commitments for the Tenements on behalf of Boadicea. Tillkännagivande • Nov 02
Trigg Minerals Limited, Annual General Meeting, Nov 30, 2023 Trigg Minerals Limited, Annual General Meeting, Nov 30, 2023, at 09:00 W. Australia Standard Time. Location: BDO, Level 9, Mia Yellegonga Tower 2, 5 Spring Street Perth WA 6005 Perth Western Australia Australia Agenda: To receive and consider the annual financial report of the Company for the financial year ended 30 June 2023 together with the declaration of the Directors, the Director's report, the Remuneration Report and the auditor's report; to consider ADOPTION OF REMUNERATION REPORT; to consider ELECTION OF DIRECTOR STEPHEN ROSS; to consider ELECTION OF DIRECTOR TIMOTHY MORRISON; to consider APPROVAL OF 7.1A MANDATE; to consider RENEWAL OF PROPORTIONAL TAKEOVER PROVISIONS IN THE CONSTITUTION. Tillkännagivande • Sep 16
Trigg Minerals Limited (ASX:TMG) entered into a binding agreement to purchase Rush Resources Limited. Trigg Minerals Limited (ASX:TMG) entered into a binding agreement to purchase Rush Resources Limited on September 15, 2023. Trigg Minerals will issue 56.7 million shares in two tranches comprising 38.3 million shares on completion and 18.3 million shares subject to an operational milestone of 2,000 metres of drilling and a minimum intersection of 20 metres at 1g/t Au being achieved within two years at the Drummond Project for the Rush acquisition and also the Project Acquisition Agreement. Corporate director Tim Morrison will be appointed as Chairman on deal completion. Completion is subject to approval by shareholders of Rush Resources and Trigg, capital raising by Trigg, acquisition of the Drummond Project, cancellation of all outstanding options in Rush and regulatory approvals. The transaction is expected to complete on October 26, 2023. Tillkännagivande • Jun 22
Trigg Minerals Limited Announces Board Changes Trigg Minerals Limited announced that experienced geologist and mining executive Stephen Ross has accepted an invitation to join the Company's Board as a Non-Executive Director, effective from 20 June 2023. Mr. Ross is a geologist with extensive executive experience on the ASX and LSE markets who has built successful project teams focused on developing mineral projects globally. Most recently, he has overseen Power Minerals Limited's ("ASX: PNN") proposed acquisition of 100% of the lithium subsidiaries of the TSX-V-listed Ultra Lithium Inc, in Catamarca Province, north-west Argentina. Mr. Ross will fill a vacancy on the Trigg board created as a result of Rod Baxter's decision tostep down to focus on his other roles within various listed and unlisted companies. Stephen Ross is a geologist, independent consultant and public company director who has been involved in the international minerals industry in technical, business development and corporate roles for 30 years. Stephen has sourced significant investments for junior explorer sand pre-development resource companies worldwide while holding Managing Director and senior technical positions while based in Central Asia, West Africa and Sri Lanka. Stephen is a member of the Australasian Institute of Mining and Metallurgy, is a Fellow of the Financial Services Institute of Australasia and he is a member of the Australian Institute of Company Directors. Stephen is currently the chairman of ASX-listed Power Minerals Limited, and a non-executive director of Pinnacle Minerals Limited and Summit Minerals Limited. Tillkännagivande • May 25
Trigg Minerals Limited Advises Maree Arnason Has Resigned as an Independent Non-Executive Director Trigg Minerals Limited hereby advised that Ms Maree Arnason has resigned as an Independent Non-Executive Director of the Company, effective as of 24 May 2023, to fulfil commitments elsewhere. Tillkännagivande • Feb 15
Trigg Minerals Limited Updates Mineral Resource Estimate for Lake Throssell SOP Project Trigg Minerals Limited updated Mineral Resource Estimate (MRE) for its Lake Throssell SOP Project. The material expansion of the Indicated Mineral Resource reflects the increasing confidence in the Lake Throssell SOP Project through innovative and systematic exploration and data gathering efforts. The increased size of the Indicated Resource, which is available for conversion to an Ore Reserve Estimate, is likely to have a material impact on the Project's total Production Target as advance the project towards Pre-Feasibility Study. As a reminder the October 2021 Scoping Study identified a total Production Target of 5.9Mt of SOP of which 70% was Indicated. This supported a 245,000tpa SOP project for an initial mine life of 21 years with lowest-cost quartile operating costs at a possible top-10 global production rate. Importantly 80% of the new Indicated Resource resides in higher-yielding aquifers with specific yields of 0.12 to 0.15. These aquifers will be the target of the next round of resource definition field work to prepare these aquifers for any future Ore Reserve Estimate. The Lake Throssell Project covers an area of 1,085km2 approximately 170km east of Laverton, Western Australia. The October 2021 Scoping Study outlined an initial 21-year mine life with forecast production of 245,000tpa SOP in the lowest cost-quartile, which would position Trigg as a potential top-10 global SOP producer. Trigg Minerals engaged Aquifer Resources to complete a Mineral Resource Estimate (MRE) for the Lake Throssell Project following field programs consisting of additional air-core drilling, monitoring bore drilling and geophysical logging. The basis of the updated MRE is additional brine samples and lithological interpretation from the air- core and monitoring bore drilling, the results of borehole magnetic resonance (BMR) logging, and small-scale aquifer tests of monitoring bores. This data has allowed conversion of the sediments within the vicinity of the BMR results to be converted from Inferred Mineral Resource to Indicated Mineral Resource due to the increased confidence in drainable porosity estimates. The aspects of the 2022 exploration program are presented in the following section. All drill collars and brine samples During 2022, additional tracks and lake causeways were installed to facilitate drilling on the lake shore and target test production bore locations off the lake surface. Four air-core drill holes were completed and lithological samples were obtained for geological logging and 29 brine samples obtained for brine assay analysis. The assay results were consistent with previous exploration results across the deposit and show a low degree of variability. The average K grade of the brine assay results is 4,549mg/L K. Three monitoring bores were completed. The monitoring bores twinned existing air-core drill holes with the aim of confirming production bore sites. The bores were drilled using mud rotary techniques with a water well drill rig. Each monitoring bore was gravel packed and bentonite sealed across the lacustrine clay to create a hydraulic seal. Monitoring bore brine samples were obtained from pumping of brine from the cased bore, which is screened over the basal aquifer zone using a narrow diameter low flow pump. The results compare well with the assay results of the twinned holes from the 2019 air-core program. The monitoring bores were mini aquifer tested on completion at low flow rates using a 2’, 12v pump. The testing has been analyzed using Theis (Theis 1935) and Cooper-Jacob (Cooper and Jacob 1946) methods for confined aquifers. Aquifer testing suggest the basal aquifer has a hydraulic conductivity of 0.25 to 0.55m/d from the monitoring bores tested. The logging has identified calcrete zones within the lacustrine clay. These zones yielded brine during air-core drilling not previously observed and will be assessed by targeted screened zones in future test production bores and test pumping. The basal fluvial aquifer was observed to be more of a clayey sand at the top of the sequence as it transitioned into the lacustrine clay, whilst at the base there is a ‘cleaner’ sand with lower fines content, represented by higher specific yield and hydraulic conductivity. Some borehole ‘washouts’ are evident in the lacustrine clay and transitional zone where total porosity is >50%, and these have been removed from the assessment of specific yield for these formations. The basal sand lies unconformably on top of the Permian bedrock (Paterson Formation). Across the Lake Throssell palaeovalley, the Paterson Formation is highly weathered and has a thick saprolite sequence.