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Riverside Consolidates the Union Project Area with Acquisition of the Past-Producing Union Mine

Mergers & Acquisitions

Riverside Consolidates the Union Project Area

with Acquisition of the Past-Producing Union

Mine

Vancouver, British Columbia--(Newsfile Corp. - March 1, 2023) -

Riverside Resources Inc. (TSXV:

RRI) (OTCQB: RVSDF) (FSE: 5YY)

("Riverside" or the "Company"),

is pleased to announce that it

has signed an Option Agreement (the "Agreement") to acquire a 100% undivided right, title and interest

in the Union Mine, within the Union District of Sonora, Mexico. This district has historically produced

high-grade zinc, gold and silver in carbonate replacement deposits ("CRD"), which is a significant style

of deposit forming major mines in northern Mexico and the southwest USA.

The Union Mine historically

produced ~50,000 ounces of gold ("Au") from the upper oxide zones of manto and chimney bodies

according to past reports. The potential for further expansion through a focused exploration is wide open

along strike and at depth for both oxide and into sulfide ore targets.

This specific tenure, located within the Company's 100%-owned Union Project, has been of interest to

Riverside for several years and this Agreement finally consolidates this key inlier ground. The Union

Mine property is in good standing with established infrastructure, surface access, and the opportunity to

complete option purchase for 100% interest in these claims provides the Company with a clear path to

start testing priority targets across the consolidated land package in this district.

Riverside's President and CEO, John-Mark Staude, stated: "Riverside is excited to be progressing the

Union District and this deal consolidates the heart of the broader Union Project, giving us line of sight

towards 100% ownership. We believe there is excellent potential to extend mineralization beyond the

areas that were historically mined at Union and Union Norte. Controlling the historical mine areas and

local infrastructure puts us in a position to move ahead more aggressively with other discovery targets

within the surrounding areas as well."

Agreement Details:

Riverside paid USD$170,000 and can complete its earn-in to own an undivided 100% interest by

making a second payment of USD$100,000 any time within 60 months of signing the Agreement.

Upon completion of the earn-in, a 1.25% Net Smelter Royalty ("NSR") will be retained by the

underlying owner.

Riverside can purchase ("buy back") 0.25% increments of the NSR for USD$250,000 each at any

time.

Figure 1. Geologic map with the tenure acquired in new Agreement shown in pink rectangle with manto

and chimney type CRD targets shown in red polygons. Riverside now controls all mineral tenure in this

map.

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/6101/156677_73e9c74b44a70bdd_002full.jpg

Figure 2. Cross section looking west with proposed drill sites and hole traces. Assays from Riverside's

sampling of rock dump materials from the two mine areas are labeled in black. Red areas are

interpreted manto and chimney target bodies that will now be able to drill explore.

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/6101/156677_73e9c74b44a70bdd_003full.jpg

Recent work by Riverside, announced earlier for the tenures around the Union Mine ground, returned

high grade assays from rock chip sampling and identified favorable structures (see press release

October 3, 2022)

The next phase of proposed work on this land tenure includes ground-based

geophysics building upon previous work to further refine the larger structures likely responsible for the

carbonate replacement bodies similar to those found in the Cananea Mining district (including

Buenavista Mine), Sonora and the Sierra Vista Mining district (Taylor and other deposits), Arizona. Drill

permitting is now underway and the Company views the consolidated Union Project as one of the

Company's lead assets and will move to rapidly refine targets for drilling later this year.

Qualified Person & QA/QC:

The scientific and technical data contained in this news release pertaining to the La Union Project was

reviewed and approved by Julian Manco, P.Geo, a non-independent qualified person to Riverside

Resources focusing on the work in Sonora, Mexico, who is responsible for ensuring that the information

provided in this news release is accurate and who acts as a "qualified person" under National Instrument

43-101 Standards of Disclosure for Mineral Projects.

Rock samples from the exploration program discussed above at the La Union Project were taken to the

Bureau Veritas Laboratories in Hermosillo, Mexico for fire assaying for gold. The rejects remained with

Bureau Veritas in Mexico while the pulps were transported to Bureau Veritas laboratory in Vancouver,

BC, Canada for 45 element ICP/ES-MS analysis using 4-acid digestion methods. A QA/QC program

was implemented as part of the sampling procedures for the exploration program. Standard samples

were randomly inserted into the sample stream prior to being sent to the laboratory.

About Riverside Resources Inc.:

Riverside is a well-funded exploration company driven by value generation and discovery. The Company

has over $8M in cash, no debt and less than 80M shares outstanding with a strong portfolio of gold-silver

and copper assets and royalties in North America. Riverside has extensive experience and knowledge

operating in Mexico and Canada and leverages its large database to generate a portfolio of prospective

mineral properties. In addition to Riverside's own exploration spending, the Company also strives to

diversify risk by securing joint-venture and spin-out partnerships to advance multiple assets

simultaneously and create more chances for discovery. Riverside has properties available for option,

with information available on the Company's website at

www.rivres.com

.

ON BEHALF OF RIVERSIDE RESOURCES INC.

"John-Mark Staude"

Dr. John-Mark Staude, President & CEO

For additional information contact:

John-Mark Staude

President, CEO

Riverside Resources Inc.

[email protected]

Phone: (778) 327-6671

Fax: (778) 327-6675

Web:

www.rivres.com

Mehran Bagherzadeh

Corporate Communications

Riverside Resources Inc.

[email protected]

Phone: (778) 327-6671

TF: (877) RIV-RES1

Web:

www.rivres.com

Certain statements in this press release may be considered forward-looking information. These

statements can be identified by the use of forward-looking terminology (e.g., "expect"," estimates",

"intends", "anticipates", "believes", "plans"). Such information involves known and unknown risks --

including the availability of funds, the results of financing and exploration activities, the interpretation

of exploration results and other geological data, or unanticipated costs and expenses and other risks

identified by Riverside in its public securities filings that may cause actual events to differ materially

from current expectations. Readers are cautioned not to place undue reliance on these forward-

looking statements, which speak only as of the date of this press release.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the

policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this

release.

To view the source version of this press release, please visit

https://www.newsfilecorp.com/release/156677