KORELLA EXPORT CAPABILITY ENHANCED THROUGH RAILPHOS PROJECT

NEWS RELEASE 25-012 June 18, 2025

KORELLA EXPORT CAPABILITY ENHANCED THROUGH RAILPHOS PROJECT

WELLINGTON New Zealand - Chatham Rock Phosphate Limited (TSXV: “NZP”, NZX: “CRP” and
“3GRE” (Frankfurt) or the “Company”) is pleased to announce that it has commenced a Feasibility
Study to develop a railway to connect its 100% owned Korella North Mine and its planned phosphate
export facility to the Port of Karumba.

The RailPhos project connecting the Korella North Mine, NW Queensland to the Port of Karumba
involves the building of the long-mooted Cloncurry to Normanton rail line with an extension to
Karumba.

The Korella North Mine is adjacent the existing Phosphate Hill to Port of Townsville rail line which
would connect at Cloncurry to the new Cloncurry- Karumba rail line.

Korella North is the only phosphate mine capable of loading directly in bulk onto rail. Phosphate
companies with currently no access to bulk phosphate rail transport options are NW Phosphate, Centrex,
Avenira, Australia Venus Resources and Golden Cross Resources.

Transport in bulk by rail and transshipment of phosphate through the Port of Karumba into Panamax
and larger ocean-going vessels anchored in the Gulf of Carpentaria, provides the only economical
means of exporting phosphate.

RailPhos would provide a bulk rail solution for CRP’s Korella North Mine and Korella South projects
at Phosphate Hill in NW Queensland which will also enable other phosphate miners to export in bulk
utilising the common-user facility in the Port of Karumba.

RailPhos will be privately funded and operated.

RailPhos’s Cloncurry to Karumba rail line is designed to be an all-weather operation to enable export
of up to 10 million tonnes per annum of phosphate through a common-use facility in the Port of
Karumba.

Chatham is engaging with potential customers in China/Indonesia, rail construction companies, railway
operators, landowners, construction material providers and existing /potential phosphate miners inviting
them to participate as potential Joint Venture partners in RailPhos.

The feasibility study will establish the scope, cost and programme for delivery of railway track and
rolling stock to build and operate RailPhos and will include consideration of government approvals,
funding and title requirements for the rail corridor and other assets.

To enable third party users of RailPhos the feasibility study will also consider the establishment of
common user bulk rail loading facilities at Mirri (at Korella North, Phosphate Hill), Mt Isa and Duchess.

Chris Castle
President and Chief Executive Officer
Chatham Rock Phosphate Limited
64 21 55 81 85 or chris@crpl.co.nz


Statements about the Company’s future expectations and all other statements in this press release other than historical
facts are “forward looking statements”. Such forward-looking statements are based on numerous assumptions, and
involve known and unknown risks, uncertainties and other factors, including risks inherent in mineral exploration and

development, which may cause the actual results, performance, or achievements of the Company to be materially
different from any projected future results, performance, or achievements expressed or implied by such forward-looking
statements.

Neither the TSX Venture Exchange, its Regulation Service Provider (as that term is defined under the policies of the
TSX Venture Exchange), or New Zealand Exchange Limited has in any way passed upon the merits of the above
described transaction, and has neither approved nor disapproved of the contents of this press release.