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RCT.V ·

Rochester Announces Processing Plant Modifications

Mine Development & Operations Metallurgy & Processing

TSX Venture: RCT

Frankfurt: R5I

Suite 1305-1090 W. Georgia St., Vancouver, BC, V6E 3V7  Phone: 604.685.9316 Fax: 604.683.1585

News Release

ROCHESTER ANNOUNCES PROCESSING PLANT MODIFICATIONS

Vancouver, British Columbia – November 21, 2024: - Rochester Resources Ltd. (the “Company” or “Rochester”)

(TSXV: RCT) provides this update on work programs at the 100% owned Mina Real property.

Since 2007, the Mina Real processing plant has been treating mineralized material from the Estanzuela Unit, with

additional material from the San Francisco Unit since 2014. The plant employs a conventional cyanidation process,

including crushing, grinding, and chemical treatment.

The Company has conducted mining o perations without defined mineral resources and the production decision

was not based on a feasibility study of mineral reserves that has demonstrated technical or economic viability.

Historically, material from these two sources has contained high levels of manganese, which has negatively impacted

silver production. Over the past ten months, the Company has been actively evaluating potential plant modifications

to increase efficiency and silver production . Pilot testing has been conducted over the past four months and based

on results achieved the Company is now moving forward to implement the plant modifications.

The required plant modifications are projected to cost approximately USD $3 million. The implementation will occur

in stages, with an initial budget of USD $1 million. Initial funding for the project will be by debt, on terms to be

finalized, provided by Company Chairman and Director Eduardo Luna, alongside a company affiliated with

Rochester’s President, Nick DeMare.

ON BEHALF OF THE BOARD

“Nick DeMare”

CEO and Director

Tel: 604.685.9316

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.