Ann: Appendix 5B , page-2

Form 603
Corporations Act 2001
Section 671B
Notice of initial substantial holder
To Company Name/Scheme
Bonaparte Diamond Mines NL
ACN/ARSN
45 078 606 434
1. Details of substantial holder (1)
Name Minemakers Limited
ACN / ARSN (if applicable)
The holder became a substantial holder on 09 / 04 / 2009 .
2. Details of voting power
The total number of votes attached to all the voting shares in the company or voting interests in the scheme that the substantial holder or an associate (2)
had a relevant interest (3) in on the date the substantial holder became a substantial holder are as follows:
Class of securities (4) Number of securities Persons’ votes (5) Voting power (6)
Ordinary Fully Paid Shares 19,612,255 19,612,255 10.3%
3. Details of relevant interests
The nature of the relevant interest the substantial holder or an associate had in the following voting securities on the date the substantial holder became a
substantial holder are as follows:
Holder of relevant interest Nature of relevant interest (7) Class and number of securities
Minemakers Limited Relevant interest arises under
s608(8) of the Corporations
Act as a result of acceptances
of the takeover offer set out in
the Bidder’s Statement dated
11 March 2009.
19,612,255 Ordinary Fully
Paid Shares
4. Details of present registered holders
The persons registered as holders of the securities referred to in paragraph 3 above are as follows:
Holder of relevant interest Registered holder of
securities
Person entitled to be
registered as holder (8)
Class and number of
securities
Minemakers Limited Accepting
ordinary
shareholders
Minemakers Limited 19,612,255 Ordinary
Fully Paid Shares
5. Consideration
The consideration paid for each relevant interest referred to in paragraph 3 above, and acquired in the four months prior to the day that the substantial holder
became a substantial holder is as follows:
Holder of relevant interest Date of acquisition Consideration (9) Class and number of securities
Minemakers Limited Various dates
between
27/3/09 and
9/4/09
Consideration
payable on the terms
of the takeover offer
set out in the Bidder’s
Statement dated 11
March 2009.
19,612,255 Ordinary Fully
Paid Shares
6. Associates
The reasons the persons named in paragraph 3 above are associates of the substantial holder are as follows:
Name and ACN/ARSN (if applicable) Nature of association
N/A N/A
7. Addresses
The addresses of persons named in this form are as follows:
Name Address
Minemakers Limited 23 Altona Street, West Perth, WA 6005
Signature
print name
John Ribbons
capacity Company Secretary
sign here
date 15 / 4 / 2009
DIRECTIONS