Increase Of Land Ownership At South Crofty

Cornish Metals Inc. (AIM/TSX-V: CUSN) ("Cornish Metals" or the "Company"), a mineral exploration and development company focused on advancing its 100% owned and permitted South Crofty tin project in Cornwall, United Kingdom, is pleased to announce that it has purchased approximately 4.5 acres of land from Cornwall Council. This land is immediately adjacent to existing surface land owned by Cornish Metals and provides direct access to the main road at Dundance Lane from where a new entrance to the mine site is planned and where a new mine office, stores and workshop will be located. This acquisition increased the total land area at South Crofty owned by the Company to approximately 32.5 acres.

Figure 1: Aerial view of South Crofty's existing surface land and the property acquired.

As at March 31, 2025 the Company's cash position was £47.9 million (equivalent to C$89 million).

o US$201 million after-tax NPV8% and 29.8% IRR

o 3-year after-tax payback

o 4,700 tonnes average annual tin production in years two through six

o Life of mine all-in sustaining cost of US$13,660 /tonne of payable tin

o Total after-tax cash flow of US$626 million from start of production

TECHNICAL INFORMATION

ON BEHALF OF THE BOARD OF DIRECTORS

"Don Turvey"

Don Turvey

CEO and Director

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Caution regarding forward looking statements

Caution regarding non-IFRS measures