Kalgoorlie Gold Mining Restarts RC Drilling at Lighthorse and Advances Aircore Drilling Across Pinjin Project

RC Drilling Resumes at Lighthorse with Targeted Infill and Extension Drilling

Kalgoorlie Gold Mining has restarted RC drilling at the Lighthorse gold prospect within the Pinjin Gold Project, with the rig arriving on 24 July 2026 and drilling commencing over that weekend. The program focuses on systematic follow-up drilling, including infill and extensional holes across northern Lighthorse to reduce drill spacing to approximately 50 × 40 metres over the most promising primary gold mineralisation identified so far. Additional selective infill and extension drilling is planned around the initial discovery zone and further north along the north–south magnetometric conductivity geophysical anomaly.

The RC program is designed for up to 19 holes totaling 3,200 metres. All holes are angled 60 degrees east to optimally intersect steeply west-dipping mineralised structures. The company anticipates completing the program within about three weeks. Drilling to date has revealed that the primary gold system at Lighthorse is more extensive than initially understood, with mineralisation remaining open to the north. Earlier RC drilling defined primary gold mineralisation in widely spaced holes north-northwest of the original discovery, advancing the understanding of the prospect’s potential.

Primary Gold Mineralisation Aligns with 2025 Sub-Audio Magnetics Survey

A significant insight guiding the current RC program is the strong correlation between previously intersected primary gold mineralisation and a north–south trending magnetometric conductivity (MMC) high identified in KalGold’s 2025 Sub-Audio Magnetics (SAM) survey over the Lighthorse corridor. This geophysical correlation provides a structured framework for infill and extension drilling. The planned RC holes, dipping 60 degrees east, are positioned to test areas within and beyond earlier drill coverage along the MMC anomaly.

Utilising geophysical targeting to enhance drilling efficiency is a standard exploration approach, demonstrating KalGold’s methodical evaluation of Lighthorse. The MMC high from the 2025 SAM survey offers a three-dimensional guide to subsurface mineralisation trends, enabling the design of a drilling program that tests both infill and extension opportunities along a defined corridor. This systematic strategy reflects KalGold’s confidence in the geophysical data and the potential for discovering additional primary gold mineralisation along the MMC anomaly.

Aircore Drilling Progresses with 55% Completion Across LTZ Flexure Targets

Alongside RC drilling at Lighthorse, Kalgoorlie Gold Mining is advancing first-pass aircore drilling over Laverton Tectonic Zone (LTZ) Flexure targets located about 3.5 kilometres southeast of the Kirgella Gift-Providence deposit. Approximately 140 holes have been drilled, representing 55% completion of the planned program. Average hole depths are around 35 metres, shallower than the initial estimate of 50 metres. Depths are expected to increase moving south toward the Lake Rebecca palaeodrainage system, with the program progressing on budget.

The geological units intersected so far align with KalGold’s interpretation of the LTZ Flexure area, including intermediate, mafic, and ultramafic rocks to the west—similar to the host rocks at Lighthorse and Kirgella Gift-Providence—and granitic gneiss, granite, and amphibolites of the Rebecca Sequence to the east. The boundary between these sequences is a significant LTZ structure marked by shearing, quartz veining, and various alteration styles observed in drilling. The aircore program is expected to conclude in the coming weeks, with results to be released after completion and assay processing.

Sampling and Logging Procedures for LTZ Flexure Aircore Drilling

The company update details the sampling and logging protocols for the LTZ Flexure aircore program. Sampling includes 4-metre composite intervals for gold-arsenic assays and 1-metre bottom-of-hole samples for multielement analysis. Archival chip trays provide field descriptions subject to revision post-program, with field codes documenting transported (T), saprolitic (S), and fresh (F) profile sections. Lithological descriptors and mineralisation indicators such as intermediate schist and sulphidic quartz veining are noted, exemplified by drill hole KGAC26052.

These documented procedures ensure industry-standard data quality and interpretation reliability. Logging data from all holes will be compiled for assessment upon program completion. Samples from KGAC26052 have been submitted for assay, with results to be reported once laboratory processing is finalized.

Pinjin Gold Project’s Strategic Location Within the Laverton Tectonic Zone

Kalgoorlie Gold Mining’s Pinjin Gold Project lies roughly 140 kilometres northeast of Kalgoorlie Boulder in Western Australia, situated within the prolific Laverton Tectonic Zone (LTZ). This Tier One location hosts some of the Eastern Goldfields’ largest gold mines and deposits, providing a strong regional geological context. The project neighbors Ramelius Resources’ (ASX:RMS) Rebecca Gold Project, where a recent pre-feasibility study outlined potential gold production by 2027, highlighting active exploration and development nearby.

The Pinjin Project includes the Kirgella Gift-Providence gold deposit and the Lighthorse prospect within KalGold’s portfolio. It is located approximately 25 kilometres north of Ramelius’ Rebecca Gold Project and 35 kilometres east of Kalgoorlie near the La Mascotte gold deposit. The project’s position within the productive LTZ indicates favorable gold-hosting geology and structural features, with proximity to other exploration and development sites underscoring the region’s exploration focus and infrastructure advantages for future production potential.

KalGold’s Exploration Portfolio and Gold Resource Base

Kalgoorlie Gold Mining Limited is an ASX-listed company recognized as a low-cost gold discoverer with a broad portfolio of Western Australian projects. The company reports a total gold resource exceeding 214,000 ounces. KalGold’s strategy emphasizes defining shallow, high-potential gold deposits, focusing on exploration targets that may yield near-surface, economically viable resources. This substantial resource base combined with multiple exploration projects across Western Australia reflects a diversified approach within a highly prospective gold jurisdiction.

Headquartered at Suite 2, 1209 Hay Street, West Perth, Western Australia, KalGold provides investor contact details and is led by Managing Director and CEO Matt Painter. Further company information is available at www.kalgoldmining.com.au. The company’s ASX listing and public disclosure obligations affirm its established presence in Western Australia’s gold exploration sector with institutional investor support.

Assay Results from Kirgella Gift and Providence RC Program Still Pending

The company update notes that assay results from the Kirgella Gift and Providence RC drilling completed in late May 2026 remain delayed due to extended laboratory turnaround times caused by industry-wide demand. The laboratory expects turnaround times to normalize in the coming months, with KalGold anticipating receipt of all remaining results shortly. The company will release results after thorough assessment and interpretation.

This delay may impact project development timelines and public information flow. However, KalGold’s transparency regarding the cause and expected resolution provides clarity to investors. The pending assay data will be critical for evaluating mineralisation characteristics and resource definition within the Kirgella Gift-Providence and broader Pinjin areas once reviewed by the technical team.

Exploration Risks and Resource Definition Status at Pinjin

While early exploration at Pinjin, including primary gold mineralisation at Lighthorse and geological indicators across LTZ Flexure targets, is encouraging, the project remains in the exploration phase with significant work needed to define commercially viable mineral resources. Current RC and aircore drilling constitute first-pass and infill exploration designed to test targets and generate assay data to support future resource estimation. No mineral resource estimates for Lighthorse or LTZ Flexure targets have been disclosed, indicating these areas have yet to reach resource definition.

Exploration risks include the possibility that additional drilling may not confirm significant gold mineralisation beyond tested zones, that pending assay results may not support economic grades or thicknesses, and that geophysical targets may not translate into mineralised zones. The project’s location 140 kilometres from established Kalgoorlie Boulder infrastructure and 25 kilometres from Ramelius’ Rebecca site presents logistical considerations for future development. Successful conversion of exploration results into defined resources and production depends on multiple technical, financial, and market factors beyond KalGold’s direct control.

Upcoming Milestones and Timeline for Exploration Programs

The RC drilling program at Lighthorse is expected to take about three weeks from its late July 2026 start. The aircore drilling over LTZ Flexure targets is anticipated to finish in the coming weeks, with results to be reported thereafter. Timing for assay result releases from current and pending Kirgella Gift and Providence programs depends on laboratory processing and technical evaluation schedules.

Investors will likely monitor the release of Lighthorse RC drilling results and completion of the LTZ Flexure aircore program, as these data will inform KalGold’s assessment of mineralisation potential at Pinjin. The return of outstanding Kirgella Gift and Providence assay results will also provide important insights into mineralisation characteristics, guiding decisions on further drilling, resource definition, and project development planning within the Pinjin portfolio.