Mr. Doug Andrews reports

RT MINERALS CORP DISCOVERS NEW MINERALIZED OUTCROP CONFIRMING SIGNIFICANT EXTENSION OF THE ULTRAMAFIC LAYERED INTRUSIVE ON THE NORDICA PROPERTY, ONTARIO

RT Minerals Corp. has released results from a reconnaissance and field rock sampling program at the Nordica property carried out in late spring to present 2023. The Nordica property is 100 per cent owned by RT Minerals and located 60 kilometres southeast of Timmins, Ont.

Current sampling results are focused on RT Minerals' verification of mineralized outcrop within the vicinity of the original and historic discovery outcrop at the southeast end of the Nordica intrusive (MNDM files OFR 6102), confirmed by current RT Minerals samples 63457 to 63460. In addition, a newly discovered outcrop at Sylvia Creek approximately 2.7 km to the northwest is represented by RT Minerals samples 63455 and 63456. A total of six chip samples from outcrop consisting of approximately three kilograms per sample were taken, and all samples carried variable mineral content.

Current surface sampling confirms mineralization near the original historic discovery outcrop, and includes current chip sample 63457 containing 2,459 parts per million nickel, 1,470 ppm copper, 233 ppm cobalt and 0.25 per cent chromium; and chip sample 63458 containing 1,155 ppm Ni, 664 ppm Cu, 116 ppm Co and 0.94 per cent Cr; and chip sample 63459 containing 877 ppm Ni, 371 ppm Cu, 93.4 ppm Co and 1.51 per cent Cr; and chip sample 63460 containing 589 ppm Ni, 852 ppm Cu, 46.8 ppm Co and 0.05 per cent Cr.

In addition, from this same area of the historic discovery outcrop, current RT Minerals chip sample 63457 returned 0.19 gram per tonne palladium, and sample 63460 returned 0.26 g/t Pd.

Of significant interest are the current samples 63455 and 63456 taken by RT Minerals from outcrop. These two chip samples are located at Sylvia Creek approximately 2.7 km northwest of the historical discovery outcrop.

In addition, massive to semi-massive layered chromite outcrop was discovered at Sylvia Creek, where these samples were taken. Sample 63455 returned 540 ppm Ni, 3.95 per cent Cr, 0.17 per cent titanium and 320 ppm vanadium. Sample 63456 returned 701 ppm Ni, 11.9 per cent Cr, 0.30 per cent Ti and 878 ppm V.

The discovery of this layered chromite-bearing unit 2.7 km to the northwest is the first significant verification of ultramafic layered intrusive bedrock outside of the immediate 400-metre-by-400-metre area of the original discovery outcrop.

The outcrop is aligned with magnetics that strongly suggest that the entire Nordica intrusion could extend for at least 2.7 km along strike to the northwest. In addition, the outcrop is evidence that the intrusion is located farther westward within an area previously mapped as metavolcanics. This significantly increases the potential overall size of the Nordica intrusive complex. Six further four-kilogram samples from outcrop in this area are pending.

The current inferred size of the Nordica intrusion, excluding magnetic signatures, is approximately 250 metres wide (drill holes 98-01, 98-02 and outcrop), approximately 2.7 km long (drill hole 98-01 to the newly discovered outcrop) and approximately at least 240 m deep (historic drill holes 98-01 and 98-02).

The company has developed a plan for follow-up exploration within this new high-priority target area, including additional surface exploration to locate additional ultramafic assemblages followed by diamond drilling. Drilling in a northeasterly direction along the 2.7-kilometre-length target area will attempt to intercept additional ultramafic assemblages within the layered Nordica intrusive (pyroxenite, peridotite and gabbro) and to test for further Ni, Cu, platinum, Pd and Co mineralization within the intrusive. At least five widely spaced 300-metre drill holes would be required to initially test this target over the 2.7-kilometre length. This work program is subject to the company securing exploration financing.

Quality controls, sampling and assaying

All six three-kilogram chip samples from outcrop, in the current RT Minerals field program, were assayed using total digestion ICP-OES and fusion XRF. Assaying was managed and carried out by Activation Laboratories Ltd., Timmins, Ont., and Swaslabs Ltd., Kirkland Lake, Ont. Both are ISO/IEC 17025-accredited assay labs. The current assay results detailed herein are from RT Minerals' initial field sampling. The assays contained herein may not be indicative of all rock types. Additional sampling is required to determine the significance and extent of these results. Six further four-kilogram samples from the Sylvia Creek area of the newly discovered outcrops are pending.

Qualified person

The technical information contained in this news release has been reviewed and approved by Garry Clark, PGeo, a qualified person as defined in National Instrument 43-101 (Standards of Disclosure for Minerals Projects).

About RT Minerals Corp.

RT Minerals is a junior exploration company listed on the TSX Venture Exchange under the symbol RTM. The company holds a 100-per-cent interest, largely royalty free, in a portfolio of rare earth element, gold and base metal properties in Ontario, Canada.

The Nordica property (Cu, Ni, Co, Cr and Pd) is composed of 34 claims in Nordica township that cover the ultramafic layered Nordica intrusive complex in the Abitibi greenstone belt, within the Superior province, 60 km southeast of Timmins, Ont. Nordica is prospective for copper, nickel, cobalt, chromium and palladium mineralization. Previous exploration activity on the Nordica property has encountered Cu grading up to 0.292 per cent (rock grab samples), Ni up to 0.24 per cent in drill core over 1.0 m, Co up to 614 ppm (outcrop), Cr up to 17.7 per cent (grab rock sample) and Pd up to 1.2 parts per billion (outcrop chip and drill core over 3 1.0 m) (MNDM file OFR 6102).

The Kenogaming, Pharand I and Pharand II properties (Ni, Cr and Co) consist of 38 claim blocks that are 100 per cent owned with 32 claims royalty free and six claims subject to a 2-per-cent net smelter return royalty. The properties are situated in Kenogaming and Pharand townships in the northern Swayze greenstone belt, located within the Abitibi subprovince of the Superior province, southwest of Timmins, Ont. The properties are located within the Hanrahan assemblage, which is confined to the southeastern part of the northern Swayze greenstone belt. Cumulate ultramafic bodies are the specific targets comprising the Kenogaming, Pharand I and Pharand II prospects. In 1979, previous operators tested a strong magnetic anomaly with a 184.5-metre-long diamond drill hole, which intersected up to 0.25 per cent nickel in carbonated and serpentinized cumulate ultramafic with interbeds of chlorite and talc alteration over a 3.0-metre section at the bottom of the hole.

The Ireland property (rare earth element) is a royalty-free 52-claim block covering an inferred carbonatite complex (the Ireland complex) located in Ireland township, 45 km northeast of Smooth Rock Falls, Ont. The Ireland complex is 100 per cent owned by RT Minerals, is approximately 4.0 km long, 2.8 km wide and oval shaped, and is positioned along a southern extensional splay fault contained within the Kapuskasing structural trend. The Kapuskasing structural trend contains several well-documented carbonatite complexes that contain niobium, iron, titanium and rare earth element resources within various assemblages of carbonatite rocks.

Case batholith group 1 and new 190-claim staking (rare earth element) consist of 190 claims covering the Case batholith centred on the Heighington township, 85 km northeast of Cochrane, Ont. The Case batholith properties are 100 per cent owned and royalty free. The properties occur within the boundaries of the Case batholith and are specifically located in the Heighington, Kenning, Sequin and Case townships. Five properties are situated 12 km north of the Power Metals Case Lake lithium/cesium discovery in the Steel township. The 190 newly staked claims adjoin Power Metals and Beyond Lithium landholdings located in the southeastern portion of the Case batholith.

Case batholith group 2 (rare earth element) consists of four properties (113-claim blocks) that are 100 per cent owned, and certain of the claims are subject to a 2-per-cent NSR royalty, within the boundaries of the Case batholith in Northern Ontario. The four properties are in the Agassiz township (29 claims), the Potter township (51 claims), the Seguin/Challies township (14 claims) and the Bragg township (19 claims), Ontario. Substantially all the claim blocks have been acquired based on magnetic signatures resembling east-west-trending pegmatitic dikes and laccolith structures contained within the tonalite/granodiorite rock assemblages of the Case batholith.

Sheba-Michie-Alma (Cu, Ni, Co, Cr and Pt) consists of 194 mineral claims within the northwest-southeast-trending Michie, Sheba and Alma township corridor in the Abitibi greenstone belt, located within the Superior province, 70 km southeast of Timmins, Ont. The Sheba property is 100 per cent owned and royalty free. The Sheba property is prospective for Cu, Ni, Co, Cr, Pt and Pd mineralization (MNDM file 42A02SE2019). Previous limited surface sampling activities have encountered 0.19 per cent Cu, 0.14 per cent Ni and 0.34 per cent Cr immediately west of the Sheba South block in ultramafic pyroxenite-peridotite assemblages.

The Kendrey property (rare earth element) consists of 32 claims in the Kendrey and Colquhoun townships located 14 km southeast of Smooth Rock Falls, Ont., that are 100 per cent owned and royalty free. The property covers what appears to be a large, inferred carbonatite complex that is prospective for rare earth elements, primarily niobium. The intrusive is approximately 2.8 km wide and 2.7 km long. It is positioned along a southeastern extensional splay fault belonging to the Kapuskasing structural trend.

The Galna/Moody property (Cu, Ni, Co and Cr) consists of four separate claim blocks totalling 24 cells in the Galna and Moody townships, located 35 km east of Iroquois Falls, Ont. The company acquired a 100-per-cent interest in the property by map staking.

The Timmins property (base metals) is a royalty-free 16-claim block located approximately 50 km southeast of Timmins, Ont., and is 100 per cent owned by RT Minerals. The property features several mineralized fault systems that suggest proximity to a base metal source.

The Link-Catharine RLDZ property (gold) is composed of 15 unpatented single-cell mining claims with a total area of 220 hectares in one claim block. The Link-Catharine property is located 22 km south-southeast of the town of Kirkland Lake, Ont. RT Minerals has an option to earn a 100-per-cent interest in this property subject to a 2-per-cent NSR.

The Milligan property (gold) is a royalty-free 16-claim block located approximately 75 km northeast of Timmins, Ont., and is 100 per cent owned by RT Minerals. The Milligan property (gold) covers the southeast extension of the volcanic stratigraphy hosting the Eastford Lake gold discovery of 142.2 g/t Au over 3.0 m announced by Explor Resources in 2009.

The Blakelock property (gold) is a royalty-free nine-claim block located approximately 75 km northeast of Cochrane, Ont., and is 100 per cent owned by RT Minerals. The property is host to a massive east-west-trending magnetic-high intrusive complex that was subject to limited drilling in 1967.

The Mcquibban property (gold) is a royalty-free 19-claim block located approximately 50 km north of Cochrane, Ont., and is 100 per cent owned by RT Minerals. The property hosts a strong 3.0-kilometre-long east-west-trending inferred oxide facies banded iron formation, in which one historical drill hole encountered a gold mineralized interval of 5.47 g/t Au over 1.2 m.

We seek Safe Harbor.