Pioneer Minerals Appoints Drilling Contractor for Springfield Maiden RC Programme

Pioneer Minerals Secures Drilling Contractor, Advancing Springfield Toward Its Maiden Drill Campaign

Pioneer Minerals Limited (ASX: PMM) has taken a decisive step forward at its Springfield Tungsten, Gold and Gallium Project in Idaho, USA, formally awarding the drilling contract for its maiden reverse circulation (RC) drill programme to Alaska Midnight Sun Drilling Inc. The Pioneer Minerals Springfield drilling contractor for maiden RC drill program appointment signals a meaningful transition from target generation and geological interpretation into direct drill testing, setting the stage for what could be a transformative period of news flow for the company.

With mobilisation targeted for the September quarter of 2026, subject to Plan of Operations approval and completion of site preparation activities, the Springfield system is rapidly approaching its first modern drill test. Behind this milestone sits an increasingly compelling multi-commodity story: high-grade tungsten, gold, and gallium mineralisation confirmed across multiple styles, supported by LiDAR structural interpretation, magnetic surveys, rock chip geochemistry, and an electromagnetic survey programme underway ahead of drilling.

A Contractor with Half a Century of North American Experience

The selection of a drilling contractor is not merely an administrative step. It represents the point at which exploration intent converts into execution capability. Pioneer has engaged Alaska Midnight Sun Drilling Inc. (Midnight Sun), a contractor with more than 50 years of operating history across the United States and Canada.

Midnight Sun's familiarity with the operational and logistical demands of North American exploration environments is considered by Pioneer to be well suited to the conditions at the Springfield Project. Furthermore, the appointment provides investors with confidence that the transition from target definition to drill-hole generation is no longer theoretical — it is contracted.

Management Commentary

"Securing Midnight Sun as drilling contractor represents another important milestone as Pioneer advances Springfield toward its maiden drill programme. Over recent months we have significantly enhanced our understanding of the project through geochemistry, geophysics and detailed LiDAR interpretation, and we are now moving toward directly testing these targets."

— Michael Beven, Chief Executive Officer, Pioneer Minerals

What the Maiden Drill Programme Looks Like

The maiden RC drill programme at Springfield has been designed with clear geological intent, integrating historical mine records with modern exploration datasets to construct a multi-layered targeting framework.

Programme Summary

The programme is designed to test two distinct mineralisation systems simultaneously:

1. The Springfield scheelite-bearing tungsten skarn system — a classic skarn-hosted tungsten deposit style associated with the historic mine workings
2. Structurally controlled gold and gallium mineralisation — an independent system identified through recent geochemical and structural interpretation programmes

Targets have been generated from the integration of:

• Historical mine records and geological mapping
• Rock chip geochemistry results
• Ground magnetic surveys
• Recently completed LiDAR structural interpretation, which identified previously unrecognised fault structures including a northeast-trending fault interpreted to crosscut directly through the historic Springfield Mine area and intersect a large magnetic anomaly
• Planned electromagnetic (EM) surveys targeting conductive sulphide zones, to be incorporated into final collar placement prior to drilling

Understanding LiDAR and Why It Matters for Targeting

What is LiDAR?

LiDAR stands for Light Detection and Ranging. It is an airborne remote sensing technology that uses laser pulses to generate highly detailed, three-dimensional models of the land surface. Critically, LiDAR can penetrate vegetation canopy to reveal underlying terrain and subtle surface expressions that traditional mapping cannot detect.

Why Does It Matter for Springfield?

In mineral exploration, structural features such as faults, fold axes, and shear zones often control where mineralising fluids travel and where metals deposit. By using LiDAR to identify previously unrecognised fault structures at Springfield — including the northeast-trending fault now considered a high-priority drill target — Pioneer has materially improved its targeting confidence without turning a single metre of ground.

For investors, LiDAR-derived targeting represents a cost-effective method of enhancing geological understanding before the more capital-intensive drilling phase. The fact that LiDAR work has already identified new structural corridors intersecting a known magnetic anomaly adds a meaningful layer of support to the drill programme's design.

Key Terms Glossary

The Springfield System: What the Geochemistry Already Shows

Before a single drill hole is turned, the surface expression of Springfield's mineral endowment is already making a statement. Rock chip sampling campaigns have returned results across three commodities that collectively reinforce the multi-commodity narrative.

Gallium Results — Reconnaissance Rock Chip Sampling

At least a further 10 samples exceeded 40 ppm Ga₂O₃, confirming widespread gallium enrichment across a continuous anomalous zone within the broader Springfield system.

Gold and Tungsten Results — Key Highlights

Beyond the rock chip results, preliminary metallurgical test work on historic tailings returned a 3.27% WO₃ concentrate with a 17.6x upgrade factor. This result speaks to the project's potential amenability to processing and the concentration of tungsten within existing on-site material.

Near-Term Catalysts: A Busy Pipeline Ahead of the Drill Bit

Pioneer is not waiting passively for drilling to begin. A series of parallel work programmes are being progressed simultaneously to maximise the project's readiness and generate additional news flow in the months ahead.

Near-Term Work Programme Summary

This parallel workstream approach means investors can expect a steady cadence of updates — survey results, mapping outcomes, regulatory progress, and ultimately drill assay results — in the period leading to and following mobilisation.

The Investment Case: Three Commodities, One System, First Drill Test

Springfield's emerging investment case rests on several pillars that, taken together, represent a differentiated opportunity within the junior minerals exploration space.

1. Multi-Commodity Exposure Under One Project

The Springfield system hosts three commodities — tungsten, gold, and gallium — each with distinct end-use markets and demand dynamics. The ability to test all three within a single drill programme provides optionality that is relatively rare at the exploration stage.

2. Gallium's Strategic Context

Gallium is classified as a critical mineral across multiple jurisdictions owing to its role in semiconductors, LEDs, and defence-related electronics. Springfield's rock chip sampling has returned some of the highest gallium values recorded in preliminary exploration at this scale, with 12 samples exceeding 61 ppm Ga₂O₃ and widespread enrichment confirmed across the system.

It is important to note that these are surface rock chip results and further work, including drilling, is required to understand the true extent and continuity of gallium mineralisation at depth.

3. A Historic Mine Footprint Providing Geological Validation

The Springfield Mine has a documented history of tungsten production. Drilling into a historically validated system reduces one layer of geological uncertainty compared with entirely greenfield targets. Preliminary test work on existing tailings delivering a 17.6x tungsten upgrade adds further credence to the system's metallurgical character.

4. The First Modern Drill Test

Despite the project's documented history and recent geochemical confirmation, no modern drill programme has ever been executed across the broader Springfield system. Pioneer's maiden programme will represent the first systematic subsurface test of the full extent of mineralisation — a genuine first-mover data opportunity.

5. Idaho's Established Mining Jurisdiction

The Springfield Project is located in Idaho, a state with a well-established regulatory and legal framework for mineral exploration and mining. Idaho is home to several operating and development-stage mines across gold, silver, and other commodities. Pioneer's neighbours include projects such as Perpetua Resources' Stibnite Gold Project and Resolution Minerals' Horse Heaven Antimony Project.

Why Investors Should Watch PMM Closely

Pioneer Minerals is entering a period of materially increased operational activity. The Pioneer Minerals Springfield drilling contractor for maiden RC drill program milestone is now firmly in place, the regulatory submission is lodged, and multiple field programmes are advancing in parallel. For investors who follow junior explorers, the period between contractor appointment and first assay results is typically one of the most news-rich and closely watched phases of a project's life.

The Springfield system has demonstrated compelling surface geochemistry across three commodities, metallurgical test work supports tungsten upgradeability, and modern targeting tools including LiDAR and planned EM surveys have generated what the company considers a well-defined, multi-layered set of drill targets. The maiden programme — up to 35 holes and 2,000m of RC drilling — will represent the first direct test of this system's depth potential.

Investors should note that the programme remains subject to Plan of Operations approval from the US Forest Service and completion of site preparation activities, and that claims tenure at the North Pine Project is subject to final BLM confirmation. These are standard regulatory and administrative milestones for US-based exploration projects, and Pioneer has committed to keeping the market updated as each is resolved.

Key Takeaway:

Pioneer Minerals has positioned itself at an inflection point in the Springfield Project's development, with a drilling contractor secured, a regulatory submission lodged, and a maiden drill programme designed to test a multi-commodity system hosting tungsten, gold, and gallium. With the September quarter 2026 mobilisation target approaching and a busy near-term work programme generating ongoing newsflow, investors should keep a close watch on PMM as it prepares to turn the first drill holes at Springfield.

This article is based on Pioneer Minerals' ASX announcement dated 18 October 2025. All figures, results, and operational details are sourced directly from that announcement and previously referenced ASX releases. Investors should conduct their own due diligence and refer to Pioneer's full announcements available at www.pioneerminerals.com.au and www.asx.com.au.

Want to Learn More About Pioneer Minerals and the Springfield Project?

Pioneer Minerals (ASX: PMM) is advancing toward a genuine inflection point, with a drilling contractor secured, a regulatory submission lodged, and a maiden RC drill programme targeting tungsten, gold, and gallium at the Springfield Project in Idaho. For investors looking to follow this story as it develops toward the September quarter 2026 mobilisation target, head to the Exploration Investor YouTube channel for further coverage and insight into PMM and the Springfield Project.