American Tungsten & Antimony (ASX:AT4) advances Nevada drilling plans as US tungsten focus sharpens

American Tungsten & Antimony has taken a further step in advancing its US critical minerals portfolio, outlining plans to submit a Notice of Intent to regulators for a maiden diamond drilling program at the Tennessee Mountain Tungsten Project in Nevada.

The proposed drilling initiative sits alongside active drilling underway at the company’s Antimony Canyon Project in Utah, reflecting a coordinated approach across two historically mined US critical mineral systems.

Highlights

• Notice of Intent to be submitted for maiden diamond drilling at the Tennessee Mountain Tungsten Project in Elko County, Nevada.

• Tennessee Mountain classified as previously disturbed due to extensive historical mining and trenching activity, supporting a streamlined permitting pathway.

• Project hosts a bulk tonnage tungsten molybdenum skarn system with mineralisation defined over more than 5 km of strike.

• Planned drilling aimed at verifying high grade historical intercepts and confirming geological continuity.

• Drilling currently underway at the Antimony Canyon Project in Utah.

Tennessee Mountain benefits from a long history of exploration and mining, with historical trenching and underground workings dating back to the mid 20th century.

This legacy of activity has resulted in widespread existing surface disturbance, a factor the company has highlighted as likely to simplify regulatory processes and reduce the need for new ground disturbance during the upcoming drilling campaign.

In the US permitting context, this characteristic can materially influence timelines and operational sequencing.

From a geological perspective, Tennessee Mountain is described as a large scale tungsten molybdenum skarn system, with mineralisation reported from surface across multiple zones.

Tungsten mineralisation has been defined within a classic skarn setting that now extends over more than 5 km of strike, indicating a system of district scale dimensions rather than a series of isolated lenses.

The company has noted the bulk tonnage nature of the mineralisation, which may support assessment of large scale open pit mining scenarios, subject to confirmation through modern drilling.

The proposed diamond drilling program is designed to verify and extend historical drilling completed primarily during the 1950s and 1970s, with historical results including intercepts such as 24.9 m at 0.65% WO3 from 7.68 m, incorporating higher grade intervals, as well as multiple near surface intersections exceeding 0.7% WO3.

The upcoming program will focus on confirming these historical results to contemporary reporting standards and testing both strike and depth extensions of known mineralisation.

American Tungsten & Antimony Managing Director Andre Booyzen emphasised the importance of the permitting milestone, stating that

“submitting the NOI for Tennessee Mountain is a crucial step in our plan to unlock the value of this outstanding tungsten asset”.

He noted that the immediate priority is validating key historical holes to modern standards, with the drilling campaign designed to support rapid progression toward a maiden JORC 2012 and or SK 1300 compliant Mineral Resource.

At a corporate level, Tennessee Mountain strengthens AT4’s position across two critical minerals within Tier 1 US jurisdictions, adding scale and diversification to its existing antimony portfolio.

The company has articulated a broader objective of creating a secure domestic US tungsten supply, with resource definition at Tennessee Mountain positioned as a foundational step in that strategy.

Looking ahead, the submission of the Notice of Intent marks the transition from historical data reliance to active field validation at Tennessee Mountain.

With expectations of timely regulatory feedback and logistics planning underway, the project represents a near term operational focus for AT4 within the evolving US critical minerals landscape, where jurisdictional security and legacy assets are increasingly in focus.

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