Morgan StanAustralia - EPT Disclosure

RNS Number:5815S
Morgan Stanley Australia Sec Ltd.
17 April 2008

DEALINGS BY CONNECTED EXEMPT PRINCIPAL TRADERS

WITHOUT RECOGNISED INTERMEDIARY STATUS, OR WITH RI STATUS

BUT NOT DEALING IN A CLIENT-SERVING CAPACITY

(Rule 38.5(b) of the Takeover Code)

1. KEY INFORMATION

Name of exempt principal trader Morgan Stanley Australia Securities Limited

Company dealt in BHP Billiton Limited

Class of relevant security to which the Ordinary Shares
dealings being disclosed relate (Note 1)

Date of dealing 16 April 2008

2. INTERESTS, SHORT POSITIONS AND RIGHTS TO SUBSCRIBE

(a) Interests and short positions (following dealing) in the class of
relevant security dealt in (Note 2)
Long Short

Number (%) Number (%)

(1) Relevant securities 713,105 (0.02%) 3,876,987 (0.12%)

(2) Derivatives (other than options) N/A N/A

(3) Options and agreements to purchase/sell N/A N/A

Total 713,105 (0.02%) 3,876,987 (0.12%)

(b) Interests and short positions in relevant securities of the company,
other than the class dealt in (Note 2)

Class of relevant security: Long Short

Number (%) Number (%)

(1) Relevant securities N/A N/A

(2) Derivatives (other than options) N/A N/A

(3) Options and agreements to purchase/sell N/A N/A

Total N/A N/A

(c) Rights to subscribe (Note 2)

Class of relevant security: Details

N/A N/A

3. DEALINGS (Note 3)

(a) Purchases and sales

Total number of securities purchased Highest price paid (Note 3) AUD Lowest price paid (Note 3) AUD

1,356,582 43.3600 42.8000

Total number of securities sold Highest price received (Note 3) AUD Lowest price received (Note 3) AUD

839,913 43.3400 42.8000

(b) Derivatives transactions (other than options)

Product name, Long/short (Note 5) Number of securities (Note 6) Price per unit (Note 4) AUD
e.g. CFD

N/A N/A N/A N/A

3. OTHER INFORMATION

Agreements, arrangements or understandings relating to options or derivatives

Full details of any agreement, arrangement or understanding between the person disclosing and any other person relating
to the voting rights of any relevant securities under any option referred to on this form or relating to the voting
rights or future acquisition or disposal of any relevant securities to which any derivative referred to on this form is
referenced. If none, this should be stated.

NONE

Is a Supplemental Form 38.5(b) attached? (Note 8) NO

Date of disclosure 17 April 2008

Contact name Zafrhan Fahmy

Telephone number 020 7677 2471

Name of offeree/offeror with which connected Rio Tinto Plc

Nature of connection (Note 9) Advisor

Notes

The Notes on Form 38.5(b) can be viewed on the Takeover Panel's website at
www.thetakeoverpanel.org.uk

This information is provided by RNS
The company news service from the London Stock Exchange
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