Mr. John Mirko reports

ROKMASTER INCREASES REVEL RIDGE MINERAL RESOURCE ESTIMATE TO: 1,526,000 MEASURED AND INDICATED ("M&I") GOLD EQUIVALENT ("AUEQ") OUNCES AT 6.63 G/T AUEQ AND 1,486,800 INFERRED ("INF") OUNCES AT 6.11 G/T AUEQ

Rokmaster Resources Corp. has released an updated mineral resource estimate (2023 MRE) for the Revel Ridge project, located 42 kilometres by road north of Revelstoke, B.C.

Revel Ridge is currently known to host five mineralized zones, four of which are related to and in close proximity to the Main Deformation zone (MDZ). Mineralization associated with the MDZ is classified as a polymetallic orogenic gold deposit and is one of the largest undeveloped deposits of this type in Western Canada.

The fifth mineralized zone, the Revel Ridge Yellowjacket zone, is composed of high-grade silver-zinc-lead carbonate replacement deposits that occur 50 to 75 metres into the hangingwall of the MDZ and are amenable to underground access.

2023 mineral resource estimate highlights:

• Measured and indicated mineral resource, in all zones, is estimated to contain 1.53 million gold equivalent ounces within 7.16 million tonnes with an average grade of 6.63 grams per tonne gold equivalent;
• Inferred mineral resource, in all zones, is estimated to contain 1.49 million gold equivalent ounces within 7.56 million tonnes at an average grade of 6.11 grams per tonne gold equivalent (see attached tables).

John Mirko, president and chief executive officer of Rokmaster, stated: "With the 2023 MRE now complete, we have surpassed our goal of total mineral resources for this phase, making the Revel Ridge project one of the most significant gold-dominant polymetallic deposits worldwide. The results of the 2023 MRE show that Revel Ridge is a remarkable project -- one that has strong potential for expansion on the known zones and also for the discovery of new mineralized zones with additional exploration."

Rokmaster's exploration efforts have consistently added gold equivalent ounces to the previous mineral resource estimates. Between September, 2020, and October, 2022, Rokmaster successfully completed 120 drill holes for a total of 38,540 metres using a single drill rig. Rokmaster anticipates that the trend of increasing the project's mineral resources will continue with subsequent exploration. The project benefits from excellent on-site infrastructure and relatively close access to regional infrastructure, which allows for highly efficient exploration and potential development.

The consistency and strength of the mineralized zones on Revel Ridge are well demonstrated by examining the total amount of drilling completed on the project from the first drill hole in 1983 to 2022. The amount of drilling by all operators on the project totals 79,425 metres, which is generally much lower than many other deposits of this classification and scale. To illustrate the efficiency of drilling, each metre that has been cored on the project represents an average of approximately 19.2 measured and indicated gold equivalent ounces plus 18.7 inferred gold equivalent ounces within the 2023 MRE. More drilling, especially in the deeper portions of the MDZ, where coarse visible gold mineralization has recently been discovered, offers a significant opportunity to further grow the project's mineral resources, which remain open in all directions. (Note: The historical rate of gold equivalent ounces per metre drilled provides no assurance that this rate will continue in the future. Note that underground chip samples also contribute to the 2023 MRE.)

The 2023 MRE and Revel Ridge are the subject of continuing detailed metallurgical, engineering, environmental and economic evaluations managed by Ausenco Pty. Ltd. The new engineering studies will incorporate this expanded MRE as well as the significantly improved gold recoveries in the Revel Ridge Main zone (see news release dated June 1, 2022), which will differentiate it from the robust preliminary economic assessment that was completed in December, 2020.

Rokmaster has currently defined the strike length of the MDZ to be a minimum of 5.7 kilometres through geological mapping, drilling and geochemistry. The strike length of the mineralized volumes in the 2023 MRE is approximately 2.0 kilometres; therefore, roughly one-third of the known extent of the MDZ has been the subject of denser drill testing forming the 2023 MRE. As an orogenic gold deposit, the MDZ has good potential to remain persistent at depths similar to, and even deeper than, where Rokmaster has completed drill holes below the 830 level. Rokmaster plans to identify and test structural and lithological favourable sites for enhanced mineralization at deeper levels along the MDZ in the future. This strategy was successful in 2022, where the northwestern extension drilling found a favourable lithology contact for the MDZ to host significant sulphide mineralization (see news release dated Nov. 28, 2022). On the basis of the extended strike length of the MDZ as well as the overall consistency of mineralization, the long-term exploration target potential for the project is in the range of 18 million to 25 million tonnes at similar average grades as what is determined in the 2023 MRE.

(Note: The exploration target potential quantity and grade are conceptual in nature; there has been insufficient exploration to define a mineral resource; and it is uncertain if further exploration will result in the exploration target being delineated as a mineral resource.)

Revel Ridge mineralized domains

Gold mineralization at Revel Ridge is associated with planar deformation zones that cut an isoclinally folded sequence of Cambrian to Late Proterozoic fine-grained clastic sedimentary and carbonate rocks forming the western margin of the Kootenay Arc. Much of the mineralization at Revel Ridge has strong affinities to a class of gold deposits known as orogenic gold deposits. This deposit type forms within dilatant intervals in laterally persistent brittle-ductile deformation zones, which may be mineralized over kilometre-scale vertical distances. At Revel Ridge, the Revel Ridge Main zone (RRMZ), the Revel Ridge Footwall zone (RRFZ), the Revel Ridge Hanging Wall zone (RRHZ) and the Revel Ridge Main zone extension (RRMEX) all have characteristics common to orogenic gold deposits while the Revel Ridge Yellowjacket zone (RRYZ), has differing metallurgical characteristics, alteration styles and a unique mineralogy that is more characteristic of a silver-rich carbonate-hosted replacement deposit.

Revel Ridge Main zone (RRMZ): The RRMZ is the single-largest mineral resource domain in the 2023 MRE. The RRMZ is hosted within the MDZ, a highly planar, 55-degree-to-60-degree-northeast-dipping ductile deformation zone, with an average width of mineralization of 2.5 metres. The measured and indicated classification of the RRMZ is estimated to contain 1.09 million gold equivalent ounces in 4.47 million tonnes grading 7.59 grams per tonne gold equivalent. The inferred classification is estimated to contain 1.24 million gold equivalent ounces in 5.69 million tonnes grading 6.79 grams per tonne gold equivalent. Rokmaster's expanded surface and subsurface drill programs have significantly expanded the RRMZ at depth, where it remains open.

Revel Ridge Footwall zone (RRFZ): The RRFZ is the second-largest mineral resource domain within the 2023 MRE. The RRFZ subparallels the RRMZ but is commonly located between 10 metres and 30 metres into the footwall of the RRMZ. The RRFZ exhibits the same high-strain characteristics and similar alteration styles to the RRMZ. The RRFZ may be unique as the identification of visible gold is more common in this zone, particularly at deeper intervals of the RRFZ. Within the RRFZ, visible gold has been identified within sheeted quartz-ankerite veinlets that may be associated with minor red-brown sphalerite, galena and locally very minor arsenopyrite. In the measured and indicated classification, the RRFZ is estimated to contain 171,100 gold equivalent ounces grading 5.10 grams per tonne gold equivalent in 1.04 million tonnes. In the inferred classification, the RRFZ is estimated to contain 104,900 gold equivalent ounces grading 4.63 grams per tonne gold equivalent in 704,700 tonnes.

Revel Ridge Hanging Wall zone (RRHZ): The RRHZ is best developed in the north-central portions of the deposit area. The RRHZ is a mineralized deformation zone that occurs subparallel and a few metres to a few tens of metres into the hangingwall of the RRMZ. It has similar macro-scale characteristics: the development of strain-related fine-grained sericite, millimetre-scale to centimetre-scale quartz shear bands and sheeted shear foliation parallel high sulphide veins and veinlets. In the measured and indicated classification, the RRHZ is estimated to contain 107,400 gold equivalent ounces grading 4.44 grams per tonne gold equivalent in 753,200 tonnes, and, in the inferred classification, it is estimated to contain 64,600 gold equivalent ounces grading 3.49 grams per tonne gold equivalent in 575,100 tonnes.

Revel Ridge Yellowjacket zone (RRYZ): Of the five mineralized domains that make up the 2023 MRE, the RRYZ differs from all other mineralized domains. The RRYZ is a high-silver, zinc-lead carbonate replacement deposit hosted within siliceous limestone units and occurs 50 metres to 75 metres into the hangingwall of the RRMZ. The RRYZ is currently considered to be best developed near the north-central deposit area. The downdip extent of mineralization within the RRYZ is currently interpreted to be less than the downdip extent of mineralization in the RRMZ. The reduced downdip extension of mineralization in the RRYZ is a function of the role of anticlinal fold hinges in the development of this zone. RRYZ thickens near the anticlinal crests of deformed carbonate rocks and decreases along the limb position of these same rock units. The measured and indicated classification of the RRYZ is estimated to contain 20.34 million silver equivalent ounces in 887,900 tonnes grading 712.6 grams per tonne silver equivalent. In the inferred classification, it is estimated to contain 2.22 million silver equivalent ounces in 132,600 tonnes grading 521.5 grams per tonne silver equivalent.

Revel Ridge Main zone extension (RRMEX): The RRMEX is the northwestern strike continuation of MDZ and applies to any intersection northwest of DDH RR21-58. This zone is known to extend for at least 1,800 metres northwest of the 830-metre portal. In the inferred classification, the RRMEX is estimated to contain 58,500 gold equivalent ounces in 462,400 tonnes grading 3.94 grams per tonne gold equivalent.

2023 MRE parameters

The database on which the updated 2023 MRE is based includes data from 432 surface and underground drill holes totalling 79,425 metres of diamond drill core. The 2023 MRE also includes analytical results from 223 underground chip samples. Surface trench results have been used to constrain the Main zone outcrop. Both drill hole and underground chip sample data have been composited over 0.5-metre intervals and estimated using inverse distance cubed for gold and silver and inverse distance squared for lead and zinc.

The 2023 MRE block model data have been reviewed and validated, and the 2023 MRE has been estimated by P&E Mining Consultants Inc. The effective date of this MRE is June 6, 2023. A technical report will be filed on the company's website and SEDAR within 45 days of this disclosure.

The technical information in this news release has been prepared in accordance with Canadian regulatory requirements as set out in National Instrument 43-101 and reviewed and approved by Eric Titley, PGeo, who is independent of Rokmaster and who acts as Rokmaster's qualified person. Rokmaster's 2023 MRE, documented in this news release, has been reviewed and approved by Fred Brown, PGeo, and Eugene Puritch, PEng, FEC, CET, of P&E Mining Consultants Inc. both who are independent of Rokmaster.

About Rokmaster Resources Corp.

Rokmaster's flagship Revel Ridge project is host to a high-grade gold and polymetallic orogenic sulphide deposit, which has been the subject of a PEA (preliminary economic assessment) technical report dated Dec. 8, 2020, and the current 2023 MRE. The continuing 2023 drill program is designed to efficiently expand the volume of the Revel Ridge Main zone (as defined by the updated mineral resource estimate), which currently remains open in all directions.

Rokmaster continues with the finalization of its spinout plan for the Big Copper and Duncan Lake properties to 4Metals Exploration Ltd., a wholly owned subsidiary of Rokmaster (see news release dated Jan. 26, 2022). The spinout will provide Rokmaster shareholders the opportunity to realize the growth and potential associated with these properties and the recent resurgence in copper, zinc and silver prices in addition to the new incentives for the exploration of critical metals in Canada. Rokmaster shareholders will receive a pro rata distribution of the common shares of 4Metals Exploration on the tentative transaction date.

Big Copper

Rokmaster controls the Big Copper property in the Kimberley area of Southern British Columbia. Big Copper is a high-grade copper-silver occurrence hosted in mid-Proterozoic rocks. Copper-silver mineralization has been traced for 4.5 kilometres along strike and is exposed in a series of adits and trenches over approximately 500 metres of vertical relief. Big Copper likely belongs to a class of stratabound replacement copper-silver deposits hosted within mid-Proterozoic quartzitic sediments. The style and stratigraphic setting of mineralization at Big Copper may be analogous to similar stratabound silver-copper deposits in northwestern Montana (for example: the Troy mine (a significant past producer of copper and silver) and Hecla's Montanore predevelopment project (with 112 million tonnes inferred at 54.8 grams per tonne silver and 0.7 per cent copper) (Hecla, 2020 annual report, page 119).

Duncan Lake

Duncan Lake is a carbonate-hosted silver-lead-zinc deposit located near Duncan Lake in Southern British Columbia. The deposit is hosted within a Cambrian-age Badshot limestone, which also hosts zinc-lead-silver mineralization at Teck's recently producing Pend Oreille mine as well as past producers, including the Blue Bell mine, the Reeves MacDonald mine, and the Jersey Emerald and HB mines. Mineralization at Duncan Lake forms in the crest and limbs of the regional-scale Duncan Lake anticline, where strong zinc-lead plus or minus silver mineralization has been traced by surface and underground drilling for approximately 2,500 metres. At Duncan Lake, Rokmaster will be targeting greater than 30 million tonnes of greater than 10 per cent zinc plus lead plus silver. Historical background and a geological synthesis of the Duncan Lake deposit are provided in a National Instrument 43-101 report by B. Lane, 2018: "Technical Report on the Duncan Lake Project."

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