Date    4 July 2001
Number  02/01


BHP Billiton Limited (BHP Billiton) today announced that its offers to acquire
all of the Class A subordinate voting shares (Class A shares) and the Class B
multiple voting shares (Class B shares) of  Dia Met Minerals Ltd. (Dia Met),
for C$21.00 per share had expired.

At the expiry of the offers, approximately 98.6 per cent of the Class A shares
and 88.7 per cent of the Class B shares had been deposited, including shares
previously taken up and paid for under the offers.  All conditions of the
offers, including a minimum acceptance of 75 per cent of both classes of
shares, have been met.

BHP Billiton now intends to exercise its statutory right to compulsorily
acquire the remaining Class A shares, having secured over 90 per cent of this
class.  The Company may also seek a meeting of Dia Met shareholders to
consider a 'subsequent acquisition transaction', whereby BHP Billiton will
acquire (at C$21.00 per share) all Class B shares not deposited under the

Acquisition of Dia Met, and the additional interest in the Ekati Diamond
Mine (TM), is strategically important as it ensures that BHP Billiton will
continue to have access to a larger supply of rough diamonds to support its
polished diamond branding initiatives.

BHP Billiton will account for its ownership of Dia Met from 30 June 2001.
Based on acceptances to its offers, BHP Billiton will be entitled to an
economic interest in Dia Met of 92 per cent, following the compulsory
acquisition of the Class A shares.

Dia Met is a publicly traded Canadian mineral exploration and development
company with a primary focus on diamonds.  The company's principal asset is
a 29 per cent joint venture interest in the Ekati Diamond Mine (TM), Canada's
first commercial diamond mine.

BHP Billiton is the operator of the Ekati Diamond Mine (TM) and owns a 51 per
cent joint venture interest.  Mr. Charles Fipke and Mr. Stewart Blusson own 10
per cent of the joint venture respectively.

Further information can be found on our Internet site:


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