Notice of Resignation of Managing Director

Tertiary Minerals plc

www.tertiaryminerals.com

("Tertiary" or "the Company")

25 March 2020

Tertiary Minerals plc ("Tertiary" or "the Company")

Notice of Resignation of Managing Director

Tertiary Minerals plc, the AIM traded company building a multi-commodity project portfolio, wishes to advise that it has today received notice from Mr. Richard Clemmey of his resignation as Managing Director of the Company.

Mr. Clemmey will continue in his position until 30 June 2020 to manage the upcoming drill programme on the Company's exciting Pyramid Gold Project in Nevada, USA and to ensure an orderly transition of responsibilities. The Company will seek to make a replacement appointment in due course and the Executive Chairman will assume the role of Chief Executive as an interim measure, if so required.

Commenting today, the Executive Chairman, Mr. Patrick Cheetham, said "It is with regret that the Board has accepted Ric's resignation but understands his decision given that recent events on the Storuman project in Sweden have shifted the Group's focus to its gold and other exploration and resource identification projects. We wish Ric every success in his new role and thank him for his contribution to the Company."

Further information:

Market Abuse Regulation (MAR) Disclosure

Certain information contained in this announcement would have been deemed inside information for the purposes of Article 7 of Regulation (EU) No 596/2014 until the release of this announcement

Cautionary notice

The news release may contain certain statements and expressions of belief, expectation or opinion which are forward looking statements, and which relate, inter alia, to the Company's proposed strategy, plans and objectives or to the expectations or intentions of the Company's directors. Such forward-looking statements involve known and unknown risks, uncertainties and other important factors beyond the control of the Company that could cause the actual performance or achievements of the Company to be materially different from such forward-looking statements. Accordingly, you should not rely on any forward-looking statements and save as required by the AIM Rules for Companies or by law, the Company does not accept any obligation to disseminate any updates or revisions to such forward-looking statements.

Notes to Editors

Tertiary Minerals plc (ticker symbol 'TYM') is an AIM-traded mineral exploration company building and developing a multi-commodity project portfolio - Industrial minerals, base and precious metals.