Pacific Ridge Exploration (TSXV: PEX; OTCQB: PEXZF; FSE: PQWN) has provided an update on its ongoing drilling activities at the 100%-owned RDP copper-gold project, located in the Golden Horseshoe region of north-central British Columbia. The RDP project lies at the southern end of the Toodoggone district, approximately 40 kilometres west of the company’s flagship Kliyul copper-gold project.

Blaine Monaghan, President & CEO of Pacific Ridge, commented in a press release: “We are very pleased with what we are seeing so far. Strong copper mineralization is present in many of the drill holes and drilling has confirmed that the porphyry copper-gold-silver mineralization at Day is hosted in a tabular body that remains open. We look forward to reporting the drill results from the 2025 RDP drill program.”

The company resumed drilling at RDP in 2025 following significant mineralized intercepts reported from the 2022 program. The current drilling campaign is focused on the Day target, where the company is working to define the geometry and continuity of porphyry-style copper-gold-silver mineralization first encountered in earlier exploration.

Background and Previous Results

In 2022, drilling at the Day target returned what Pacific Ridge described at the time as one of the province’s top porphyry copper-gold intersections that year. Drill hole RDP-22-005 intersected 107.2 metres grading 1.39% copper equivalent (CuEq), or 2.06 grams per tonne (g/t) gold equivalent (AuEq). The interval included 0.63% copper, 1.10 g/t gold, and 2.91 g/t silver, within a broader zone of 497.2 metres averaging 0.66% CuEq (0.37% copper, 0.40 g/t gold, and 1.60 g/t silver).

The 2025 drilling campaign is primarily aimed at verifying the presence and orientation of a westward-striking, steeply northward-dipping tabular body of porphyry copper-gold-silver mineralization. Drilling is being conducted from multiple pads designed to test the extent of mineralization laterally and at depth.

Drill Hole RDP-25-010

The first hole of the 2025 campaign, RDP-25-010, was collared approximately 40 metres southwest of RDP-22-005. It was drilled at an azimuth of 60° and a dip of 72°. Quartz-magnetite-sulphide veining was observed in the first five metres of the hole. However, the drill encountered a late-mineral intrusive from 5 metres to 175.5 metres, leading to the hole’s termination.

Drill Hole RDP-25-011

From the same drill pad, hole RDP-25-011 was drilled at an azimuth of 48° and dip of 65°, to a total depth of 431 metres. The hole was positioned to intersect mineralization beneath and northwest of RDP-22-005. It encountered patchy potassic alteration—mainly potassium feldspar and magnetite—and zones of quartz-magnetite-sulphide veining, with visible chalcopyrite and minor bornite. These features were hosted in early-mineral monzodiorite and hydrothermal breccia units. The company reports that this hole extended known mineralization by at least 50 metres to the north, and that mineralization remains open in that direction.

Drill Holes RDP-25-012 and RDP-25-013

Two additional holes, RDP-25-012 and RDP-25-013, were drilled from a pad located 170 metres northeast of RDP-22-005. These were designed to test the continuity of the interpreted tabular mineralized body between RDP-22-005 and RDP-23-007. The latter was drilled in 2023, ending in a final intercept of 19.0 metres grading 0.45% CuEq (0.32% copper, 0.19 g/t gold, 1.08 g/t silver).

RDP-25-012 was drilled at an azimuth of 48° and dip of 65°, reaching a depth of 363 metres. RDP-25-013 was drilled at an azimuth of 160° and dip of 70°, extending to a total length of 582 metres. Both holes intersected copper-sulphide mineralization—including chalcopyrite and bornite—within potassically-altered monzodiorite and hydrothermal breccia. These findings support the hypothesis of a steeply dipping, tabular zone of porphyry copper-gold mineralization. In RDP-25-013, mineralization was observed to a vertical depth of 500 metres and remains open at depth.

Ongoing Work: RDP-25-014

As of the latest update, RDP-25-014 is in progress. This hole is being drilled from the same pad as RDP-25-011, at an azimuth of 160° and a dip of 70°. No preliminary results from this hole were reported in the latest release.

Broader Project Context

The RDP project is one of several copper-gold exploration properties held by Pacific Ridge in British Columbia. In addition to RDP and the flagship Kliyul project, the company’s portfolio includes the Chuchi, Onjo, and Redton copper-gold projects. All of the projects are located in areas of active or historical exploration within the Quesnel and Stikine terranes of central and northern B.C., known for hosting porphyry copper-gold deposits.

The RDP project, specifically, is situated in the Toodoggone region—an area that has seen increased exploration activity in recent years due to renewed interest in porphyry systems. The Day target, where current drilling is focused, is one of several prospective zones within the RDP property.

The company has not yet reported assay results from the 2025 drill holes. Further updates are expected as analytical data becomes available and additional holes are completed. The primary focus remains on determining the size, geometry, and grade continuity of the mineralized system at the Day target.

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