Additional Listing

Tertiary Minerals PLC
20 September 2001

                            Tertiary Minerals plc

                               ('the Company')

Application has today been made for admission of an additional 628,000
ordinary shares of 1p each in the Company ('Ordinary Shares') to trading on
the Alternative Investment Market of the London Stock Exchange. These shares
have been issued pursuant to the exercise of existing warrants to subscribe
for Ordinary Shares at an exercise price of 10p per Ordinary Share.

The warrants have all been exercised by certain directors of the Company and
persons connected with them as follows:

                                                       Percentage holding of
                                                       issued Ordinary Share
               Number of Ordinary     Number of       capital of the Company
               Shares being issued Ordinary Shares  following the execrcise of
                 pursuant to the    held following       warrants (Note 3)
                   exercise of     the exercise of
                    warrants           warrants

     Name

Patrick Lyn               (Note 1)          (Note 2)                      25.86%
Cheetham                   500,000         5,687,250

(Chief
Executive)

Michael Allan              128,000          416,000                       1.89%
Price

(non-executive
director)

Note 1: 250,000 of the Ordinary Shares will be issued to Karen Elizabeth
Cheetham

Note 2: 2,843,625 Ordinary Shares will be held by Karen Elizabeth Cheetham

Note 3: 21,994,674 Ordinary Shares will be in issue following the exercise of
warrants

The new Ordinary Shares will rank pari passu in all respects with the existing
Ordinary Shares of the Company and admission is expected on 26 September 2001.