MacDonald Mines Exploration Ltd. announced the commencement of a broad gravity survey over the Alwyn Copper-Gold (Cu-Au) Trend (Alwyn) on its 100% owned SPJ Property (SPJ) near Sudbury, Ontario. Survey Highlights: The gravity survey is testing the presence of iron-rich alteration zones in which Cu-Au mineralization could be associated with specular hematite to form iron oxide copper-gold (IOCG) or affiliated critical metal mineralization that are not detectable with regional magnetic surveys; Geological indicators from the 2022 drilling program are suggesting the presence of iron-rich alteration zones under the Alwyn prospect; The gravity survey covers a total of 321.9 ha at 100 m line spacing with line azimuth 45°/225° over 3.2 km along the McLaren Lake Fault Zone to cover the high and moderate priority targets proposed by ALS GoldSpot Discoveries Ltd. (ALS GoldSpot) in May 2022; The survey will be conducted by Initial Exploration Services in conjunction with ALS GoldSpot over an estimated 10 days. Alwyn Cu-Au Target: Phase 1 drilling at Alwyn consisted of five oriented diamond drill holes, totalling 693 m. Variably dense and multi-directional networks of quartz-carbonate to carbonate veins, comparable to the networks of veins associated with copper-gold mineralization at surface, were intersected in all five drill holes.

At surface and in diamond drilling in the Alwyn area, sporadic veins comprised of specular hematite + K-feldspar and variably associated with chalcopyrite mineralization were also observed. This iron oxide-bearing + K-feldspar alteration type is indicative of possible IOCG mineralization. The 321.9 ha gravity survey along the 2.5 km Alwyn Cu-Au trend is testing for the presence of zones of iron alteration under the Alwyn prospect in which Cu-Au mineralization could be associated with specular hematite to form IOCG mineralization.

This survey will help to define the footprint of iron alteration/mineralization, including potassium feldspar, earthy & specular hematite associated with mineralization and veins that were observed in the 2022 drilling program. Regional magnetic surveys indicate several interesting features along the Alwyn trend and McLaren Lake Fault. No gravity surveys have been completed in this area to date which is necessary to detect concentrations of specular hematite or non-magnetic iron-rich minerals.

The results of the survey will be integrated into ALS GoldSpot's machine learning technology to generate additional targets for future drilling and exploration. Highlights of Phase 1 Drilling at the Alwyn Prospect: 0.41 % CuEq (0.17 % Cu, 0.36 g/t Au and 0.28 g/t Ag) over 90.44 m in hole AW-22-102 (Alwyn), within an untested area of Alwyn, including two zones of stronger mineralization: Upper zone: 41.53 m at 0.53 % CuEq (0.24 % Cu, 0.43 g/t Au and 0.41 g/t Ag), including 3.99 % CuEq (1.36 % Cu, 3.87 g/t Au and 3.05 g/t Ag) over 3.20 m; Lower zone: 13.00 m at 0.84 % CuEq (0.29 % Cu, 0.82 g/t Au and 0.33 g/t Ag); Identification of cobalt anomalies in most of the drill holes completed in the Alwyn system with the broadest intersection being 0.015 % Co over 26.50 meters in AW-22-101; Copper-gold mineralization open in all directions and confirmed over a strike length of 115 m within the 2.5 km Alwyn: Copper-Gold Trend interpreted in conjunction with the work of ALS GoldSpot; Supports the potential to further expand the Alwyn copper-gold system; Widest and most significantly mineralized interval intersected during this initial five hole program at Alwyn was located southeast of the Alwyn Mine beyond the historically known footprints of Cu-Au mineralization.