Astral Builds Confidence in Theia Ahead of Resource Update

Key Concepts

Infill Program: A drilling program designed to increase the confidence in the geological model and resource estimation of a known mineral deposit by drilling at closer spacings.
Mineral Resource Grade: The average concentration of a valuable mineral (in this case, gold) within a defined mineral resource.
High-Grade Zones: Areas within a mineral deposit that contain significantly higher concentrations of the valuable mineral compared to the average grade.
DFS (Definitive Feasibility Study): A comprehensive study that provides a detailed assessment of the technical and economic viability of a mining project.
Starter Pit: The initial phase of open-pit mining, designed to be highly profitable and provide early cash flow.
Grade Control Quality Drilling: High-density drilling (e.g., 12m x 12m spacing) used to precisely delineate ore boundaries and optimize mine planning.
Mineralized Waste: Material that contains some mineralization but not enough to be classified as ore.
Waste: Material that contains no significant mineralization and must be removed to access the ore.
230 Shear: A specific high-grade geological structure identified within the deposit, potentially a feeder for mineralization.
Grantor: A geological term likely referring to the host rock or geological formation where mineralization occurs.
Geotechnical Testing: Investigations to determine the physical properties of rock and soil for engineering purposes, crucial for mine design and stability.
Mandela Deposits (EOS and Hestia): Other mineral deposits within the broader project area that require geotechnical data for DFS.

Infill Drilling Program and Results

The company is currently completing an infill drilling program at the 10,000-meter, 99-hole project. Approximately 50% of the results have been reported, consistently highlighting relatively broad and high-grade gold zones. These intersections show an average grade that is nearly double the mineral resource grade of 1.1 g/ton. This outcome is described as "pleasing" and demonstrates exceptional consistency across the reported sections. The success of this program is expected to provide significant confidence for the upcoming Definitive Feasibility Study (DFS) and subsequent development in the second half of next year.

Strategic Objectives of the Infill Program

The primary objective of this infill program is "derisking" the project, with a stated refusal to "go into this project and fail." The high-density drilling, described as "12 by 12 m sort of high density drilling almost great control quality of drilling," is intended to provide a high degree of confidence as the project moves towards development.

Identification of a Profitable Starter Pit

The drilling has identified what appears to be a "very highly profitable starter pit." This will serve as Stage One for the Thea project. The consistency of the results and the high grades are improving confidence, and the company is "extremely pleased to have such a high-grade zone to drop in on as we commence mining at Thea."

Interpretation of Peripheral Drilling Results

Drilling on the periphery of the deposit is acknowledged as a standard practice. These holes are drilled beyond known mineralization to inform mining plans, specifically for classifying material as "mineralized waste or or waste." The absence of significant mineralization in a couple of these peripheral holes is considered "information that we need to inform our mining plans" and is not a cause for concern.

Ongoing 3,000m Diamond Drill Program

A 3,000-meter diamond drill program commenced on October 14th, targeting two main areas:

The 230 Shear: This is a high-grade structure within the deposit. The program aims to "tag that high-grade structure" to understand its orientation and potential scale. The 230 Shear is considered a potential "feeder to actually introduce mineralization into the broader grantor," making its orientation and scale crucial for understanding.
Parallel Structure to the East: This target is located within the Thea footprint but at depth. It represents an area that has not been previously drilled and shows potential for a parallel structure. The company is "keen to test that as well."

Geotechnical Testing for DFS

A third component of the current program involves geotechnical testing. This is essential to gather "DFS level of data around the geotechnical work" for the rest of the Mandela deposits, specifically EOS and Hestia, as the project progresses towards the DFS.

Synthesis and Conclusion

The company is making significant progress in de-risking the Thea project through a comprehensive infill drilling program. The reported results are exceeding expectations, demonstrating broad, high-grade gold zones that are nearly double the average resource grade. This success is building strong confidence for the upcoming DFS and the planned development in the latter half of next year. The drilling is not only confirming existing mineralization but also identifying a highly profitable starter pit, which will be the focus of Stage One mining. Furthermore, an ongoing diamond drill program is investigating key geological structures like the 230 Shear and a potential parallel structure, while also collecting critical geotechnical data for other deposits within the Mandela project. The strategic approach emphasizes gathering precise geological and geotechnical information to ensure a successful and profitable development.