Minerals Corporation is pleased to announce a milestone...

Minerals Corporation is pleased to announce a milestone achievement in volume sales. After
engaging in extensive testwork with a number of companies in the Australian cement industry, it
has executed a Heads of Agreement for Skardon River kaolin supply for the manufacture of two
products with potential to increase to other high volume products later. Kaolin is used in high
quality large volume concrete applications in North America but historically has not materially
penetrated the Australian market. The Heads of Agreement is for kaolin usage as follows:
· 15,000 tonnes during the start up phase in 2007; · 30,000 tonnes in 2008; and · 50,000 tonnes in 2009.
In view of the importance of this development, the company has also engaged the services of a
senior industry technical consultant to assist with future development work in this industry
sector.

2) MAJOR CUSTOMER TESTWORK APPROVAL Following trials in 2006/07, we are pleased to announce excellent testwork results for a high
volume and high value Skardon River kaolin application with a major global polymers company.

3) NEW CLOSING DATE FOR SHARE PURCHASE PLAN (SPP) Due to the above events, the directors have decided to extend the closing date of the SPP by
3 working days to 5.00pm on 27 June 2007 so as to allow shareholders extra time to consider
the SPP offer as announced on 6 June 2007.