NOA Lithium Brines Inc. report positive lithium results from brine samples from RG23-002, the second hole of the Phase 1 diamond drill program at its Rio Grande project located in Salta Province, Argentina. The hole was drilled within the salar, approximately 14 kilometers southof the first hole on the Project and intersected two high-grade lithium brine aquifers of significant thickness. Both aquifers demonstrate potential to extend into NOA's claimblocks on other parts of the salar and may continue past the surface manifestation of the salar (visible salar) and into the alluvials within the basin.

This second hole follows on the discovery of significant lithium-bearing brines in the first hole, RG23-001. In that hole two stacked aquifers in the northern alluvials of the salar were discovered: a permeable brine interval of 71 m averaging 433 mg/l Li starting at 101 m downhole and an interval of 158 m averaging 773 mg/l Li (and up to 925 mg/l Li) starting from 311 m downhole. Hole RG23-002, drilled at the Cynthia Ines claim reached a depth of 642 m. Magnesium-to-lithium ratios averaged 10:1 across the hole.

Hole RG23-002 was executed with diamond drilling (HQ-size), permitting the extraction of core samples of the salar basin formations and collection of brine samples where possible. Drilling was carried out by Salta-based Hidrotec S.A., under the supervision of NOA's geologists. Sample analysis and QA/QC notes are outlined in a separate section below.

Several salar evaporite and semi-consolidated sedimentary lithologies were intersected downhole. From just under surface to approximately 120 m depth the hole progressed through well-sorted black sands followed by approximately 60 m of fractured halite. From approximately 180 m to 480 m sandy fractured halite was dominant and beyond this, sandy crystalline halite.

The Phase 1 drill program comprises six holes designed to deliver a maiden mineral resource estimate for the Rio Grande project in early 2024. The location of RG23-002 and completed hole RG23-001.