# 09:55 ET American Tungsten and Antimony Announces Study for Tungsten Production at Del Sol Refinery in Nevada American Tungsten & Antimony, Ltd., \(ASX: AT4; OTCQX: ATALF\) announced it has engaged Metso Finland Oy to complete a Scoping Study at FEL1 Concept...

Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/09-55-et-american-tungsten-and-antimony-announces-study-for-tungsten-production--8c4b3a16-b777-44ca-a53f-f9c629b17d75

Original source: https://www.prnewswire.com/news-releases/american-tungsten-and-antimony-announces-study-for-tungsten-production-at-del-sol-refinery-in-nevada-302866335.html

Publisher: prnewswire

Original announcement: 2026-09-01T14:03:00.112Z

Analysis by Minestarters Atlas

Atlas analysis published: Unknown date

Atlas analysis updated: Unknown date

- Company: American Tungsten and Antimony, Ltd.

- Ticker: AT4

- Exchange: Unavailable

- Region: Nevada

- Primary commodity: Tungsten

- Secondary commodities: Antimony

- Document categories: Metallurgy, Agreement transaction

- Extracted: 2026-09-01 14:05:09 UTC

Narrative sentiment: 0.60 · Bullish

## Minestarters Atlas summary

American Tungsten and Antimony has engaged Metso Finland Oy to conduct a FEL1 Scoping Study for a tungsten ammonium paratungstate \(APT\) production circuit at the Del Sol Refinery in Nevada. The proposed Phase 1 capacity is 2,500 tons per annum, with potential for expansion to 5,000 tons per annum.

Reasoning: The company is advancing a strategic tungsten production circuit by leveraging existing permitted infrastructure, which reduces capital risk and aligns with US national security mandates.

- Positive factor: Engagement of Metso Finland Oy for scoping study

- Positive factor: Utilization of existing permitted infrastructure \(Del Sol Refinery\)

- Positive factor: Strategic alignment with US Executive Order \#14415 regarding domestic sourcing

- Positive factor: Potential for modular expansion from 2,500 to 5,000 tpa

- Negative factor: Study is at FEL1 Concept level \(early stage\)

Facts used in scoring: 3

## Classification and evidence

**Bench Scale Only**

Polarity: negative

Definition: Only preliminary bench tests completed — no locked-cycle or pilot work.

Why it applies: The study is at the FEL1 Concept level, which is a preliminary scoping stage.

Evidence · text

> complete a Scoping Study at FEL1 Concept Study level

**Mill Route**

Polarity: neutral

Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\).

Why it applies: The project involves a hydrometallurgical refinery circuit for APT production.

Evidence · text

> constructed and permitted hydrometallurgical plant

## Extracted facts

Stored fact records: 3. Some facts used in scoring do not have a stored record.

## Metallurgical Results (3)

### Fact 1

[Link to this fact](https://atlas-staging.minestarters.com/news/09-55-et-american-tungsten-and-antimony-announces-study-for-tungsten-production--8c4b3a16-b777-44ca-a53f-f9c629b17d75#fact-metallurgical-facts-0)

#### Identity

- Ticker: AT4

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-01T00:00:00.000Z

Reasoning: Initiation of a formal scoping study for a new production circuit.

- Positive factor: Engagement of reputable engineering firm Metso Finland Oy

### Fact 2

[Link to this fact](https://atlas-staging.minestarters.com/news/09-55-et-american-tungsten-and-antimony-announces-study-for-tungsten-production--8c4b3a16-b777-44ca-a53f-f9c629b17d75#fact-metallurgical-facts-1)

#### Identity

- Ticker: AT4

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-01T00:00:00.000Z

Reasoning: Target production capacity for the first phase of the project.

- Positive factor: Defined initial production capacity

### Fact 3

[Link to this fact](https://atlas-staging.minestarters.com/news/09-55-et-american-tungsten-and-antimony-announces-study-for-tungsten-production--8c4b3a16-b777-44ca-a53f-f9c629b17d75#fact-metallurgical-facts-2)

#### Identity

- Ticker: AT4

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-01T00:00:00.000Z

Reasoning: Planned expansion capability for the production circuit.

- Positive factor: Scalability of the proposed design

## How Atlas produces this analysis

Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.