ST BARBARA LIMITED — Major Shareholding Notification 2005

Jan 18, 2005

STRATA MINING CORPORATION LIMITED ACN 008 021 118

19 January, 2005

The Manager Listings Department Australian Stock Exchange Limited

Facsimile: 1900 999 279

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No. of Pages (incl.):

NOTICE OF PERSON CEASING TO BE A SUBSTANTIAL HOLDER

Dear Sir/Madam

Pursuant to Section 671 of the Corporations Law, Strata Mining Corporation Limited hereby advises that it is no longer a substantial holder in St Barbara Mines Limited.

The enclosed ASIC Form 605 discloses all required details.

Yours faithfully

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MARK M J SMITH Company Secretary

Form 605

Corporations Law Section 671B

Notice of Ceasing to be a Substantial Holder

To Company Name/Scheme	ST BARBARA MINES LIMITED
ACN/ARSN	009 165 066
1. Details of substantial holder (1)
Name:	STRATA MINING CORPORATION LIMITED ("STRATA") and its related bodies
The holder ceased to be a substantial holder on:	18/01/2005
The previous notice was given to the	01/11/2004
company on: The previous notice was dated:	01/11/2004
2. Changes in relevant interests

Particulars of each change in, or change in the nature of, a relevant interest of the substantial holder or an associate in voting securities of the company or scheme, since the substantial holder was last required to give a substantial holding notice to the company or scheme are as follows:

Date of change	Person whose relevant interest changed	Nature of change (6)	Class and number of securities affected
18/01/05	Strata Mining Corporation Limited	Pursuant to Buyback offer of St Barbara Mines Limited dated 10 December 2004 and swap into NuStar Mining Corporation	46.200.000
18/01/05	Excalibur Mining Corporation Limited	Pursuant to Buyback offer of St Barbara Mines Limited dated 10 December 2004 and swap into NuStar Mining Corporation	72.480.547

3. Change in association

The Persons who have become associates (3) of, creased to be associates of, or have changed the nature of their association (7) with, the substantial holder in relation to voting interests in the company or scheme are as follows:

Name and ACN/ARSN (if applicable)	Nature of association	No. of Securities Affected
16/12/04 Excalibur Mining Corporation Limited	Acquisition of 36% Interest in the share capital through share subscription by Strata Mining on 16/12/2004.	72.480.547

4. Addresses

The addresses of persons named in this form are as follows:

Name	. Address
Strata Mining Corporation Limited	Suite 4, 10 Canning Highway, South Perth
Excalibur Mining Corporation Limited	22 Melton Street, London, NW1 2BW, UK

Authorised Signatory:

Yn Ll

Date: $\frac{19}{/} \cdot \frac{105}{/}$

MARK M J SMITH COMPANY SECRETARY

This notice of change of substantial holder (ASIC Form 605) comprises 1 page/s in total