American Pacific Mining Corp. reported the third and final batch of assay results from the 2023 resource definition and geotechnical drill programs at the Palmer Project. Palmer is an advanced-stage, high-grade volcanogenic massive sulphide-sulphate deposit located in the Porcupine Mining District of the Haines Borough, Alaska, USA.

Constantine North Inc., a subsidiary of American Pacific, is the operator for the Project and the USD 20 million 2023 program was funded by joint venture (?JV?) partner Dowa Metals & Mining Co. Ltd. (Dowa). The final batch of 2023 assay results include the four (4) most significant copper (Cu) drill intersections (grade x thickness) reported to-date at Palmer, with significant zinc (Zn), gold (Au) and silver (Ag) results, as well as extending Cu-Zn mineralization beyond the current mineral resource estimate (MRE).

Highlights include: CMR23-172 Zone 1: 43.8 m grading 6.54% Cu, 3.15% Zn, 0.42 g/t Au and 27.97 g/t Ag(8.22% CuEq); CMR23-167 Zone 1: 37.1 m grading 4.57% Cu, 8.44% Zn, 0.50 g/t Au and 29.33 g/t Ag(8.40% CuEq); CMR23-169 Zone 1: 33.2 m grading 5.48% Cu, 7.22% Zn, 0.64 g/t Au and 36.78 g/t Ag(8.95% CuEq); CMR23-171 Zone 1: 23.9 m grading 9.03% Cu, 3.49% Zn, 0.83 g/t Au and 41.75 g/t Ag (11.15% CuEq); CMR23-168 Zone 1: 28.4 m grading 2.29% Cu, 4.01% Zn, 0.21 g/t Au and 26.61 g/t Ag (4.20% CuEq); and CMR23-174 Zone 2-3: 39.8 m grading 1.11% Cu, 4.34% Zn, 0.45 g/t Au and 32.45 g/t Ag (3.31% CuEq), including 17.8 m grading 1.05% Cu, 8.86% Zn, 0.94 g/t Au and 66.24 g/t Ag (5.54% CuEq). The 2023 diamond drill program successfully targeted high-priority areas in two unique mineralized lenses, Zone 1 and Zone 2-3, which together make up the South Wall Zone of the Palmer deposit. The Company is incorporating all 2023 results into its 3D geological model to complete interpretation/analysis and target rank drill locations for the 2024 program.

The third and final batch of assay results reported in this release consists of 13 drillholes (seven at Zone 1, five at Zone 2-3, and one geotechnical drill hole at the RW Oxide Zone). Summary of Results and Initial Observations: Zone 1: Drill holes CMR23-167, CMR23-169 and CMR23-171/172 stand out for their exceptional copper grades and thicknesses and support an emerging copper-rich core to Zone 1. Zone 1: CMR23-172 intersected 43.8 m of 6.54% Cu and 3.15% Zn, extending below the MRE wireframe in an area correlating to the emerging Cu-rich core and that remains open to the west and downdip. Zone 1: CMR23-168 (28.4 m of 2.29% Cu and 4.01% Zn) representing a priority step-out target for future drilling as there is limited drilling at >100 m spacing downdip.

Zone 1: CMR23-161 intersected 18.4 m of 1.6% Cu and 14.7 m of 2.66% Cu and 2.93% Zn, with the bottom of the last intercept extending approximately 20.6 m below the limits of the Zone 1 MRE in an area that remains open to the NE and downdip. Zone 2-3: Two distinct sphalerite-chalcopyrite-pyrrhotite-barite massive sulphide horizons have been identified in the drill core. Zone 2-3 remains open for expansion along strike and within the current resource model.

The Zone 2-3 mineralization is cut off by the Kudo fault at depth; the interpreted fault offset of the mineralization remains a compelling exploration target. RW Oxide Zone: Geotechnical drill hole GT23-025 intersected 1.88% lead, 0.94 g/t Au and 137.4 g/t Ag over 8.1 m. The RW Oxide Zone has limited drilling and is not included in the current MRE. GT23-25 also bottomed in copper mineralization (0.9 m of 2.27% Cu) in an area with limited drilling.

This mineralization represents a proximal exploration target for future drill campaigns. There are strict Quality Assurance and Quality Control (QA/QC) protocols at Palmer covering the planning and placing of drill holes in the field; drilling and retrieving drill core; drill hole surveying; core transport to the PalmerC amp; core logging, sampling and bagging of core for analysis; transport of core from site to ALS Laboratory in North Vancouver, BC for sample preparation and analysis; recording and final statistical vetting of results. Sampling Procedures - The Company's QA/QC drill core sample protocol consists of collection of samples over a minimum 0.3 m interval to a maximum 1.5 m interval (depending on the lithology and style of mineralization) over the mineralized portions of the drillhole.

The drill core sample is cut in half with a diamond saw, with half of the core placed in individual sealed polyurethane bags and the remaining half securely retained in the original core box for permanent storage. Drill core samples are shipped by transport truck in sealed woven plastic bags to ALS Geochemistry Analytical Lab facility in North Vancouver, BC for sample preparation and analysis. ALS Geochemistry meets all requirements of International Standards ISO/IEC 17025:2017 and ISO 9001:2015.

ALS Global operates according to the guidelines set out in ISO/IEC Guide 25. Gold was determined by fire-assay fusion of a 30 g sub-sample with atomic absorption spectroscopy (AAS). Various metals including silver, gold, copper, lead and zinc were analyzed by inductively-coupled plasma (ICP) atomic emission spectroscopy, following multi-acid digestion.

The elements copper, lead and zinc are determined by ore grade assay for samples that return values >10,000 ppm by ICP analysis. Silver is determined by ore-grade assay for samples that return >100 ppm by ICP analysis. Barium (BaO) analysis utilized lithium borate fusion into fused discs for XRF analyses, with BaO converted to BaSO4 (barite) using a conversion factor of BaO x 1.52217.

Density measurements were determined at the project site by Constantine personnel on cut core for each assay sample. The Company maintains a robust QA/QC program that includes the collection and analysis of duplicate samples and the insertion of blanks and standards (certified reference material). In addition, prepared samples, sample replicates, duplicates and internal reference materials are routinely used as part of ALS Geochemistry's internal quality assurance program.