UBS Sec. Australia - EPT Disclosure

RNS Number:2709M
UBS Securities Australia Limited
22 January 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 UBS Securities Australia Limited
Company dealt in Rio Tinto Plc
Class of relevant security to which the Ordinary
dealings being disclosed relate (Note 1)

Date of dealing 21st January 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 1,192,085 0.12% 332,011 0.03%

(2) Derivatives (other than options)

(3) Options and agreements to purchase/sell 1,124,276 0.11%

Total 1,192,085 0.12% 1,456,287 0.15%

(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

(2) Derivatives (other than options)

(3) Options and agreements to purchase/sell

Total

(c) Rights to subscribe (Note 2)

Class of relevant security: Details

3. DEALINGS (Note 3)

(a) Purchases and sales

Purchases/Sales Number of securities Price per unit
(AUD) (Note 4)
Purchases 33228 111.94
Sales 33228 111.94

(b) Derivatives transactions (other than options)

Product name, Long/short (Note 5) Number of securities (Note 6) Price per unit (Note 4)

e.g. CFD

(c) Options transactions in respect of existing securities

(i) Writing, selling, purchasing or varying

Product name, Writing, selling, Number of Exercise price Type, e.g. Expiry date Option money
e.g. call purchasing, securities to American, paid/received
option varying etc. which the option European etc per unit (Note
relates (Note 6) 4)

(ii) Exercising
Product name, e.g. call option Number of securities Exercise price per unit (AUD) (Note 4)

(d) Other dealings (including new securities) (Note 3)

Nature of transaction (Note 7) Details Price per unit (if applicable) (Note 4)

4. 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.

Is a Supplemental Form 38.5(b) attached? (Note 8)
YES

Date of disclosure 22nd January 2008

Contact name Mark Riches

Telephone number +44 20 7567 3613

Name of offeree/offeror with which connected BHP Billiton Plc/ BHP Billiton Limited
Nature of connection (Note 9) Connected advisor

Notes

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

SUPPLEMENTAL FORM 38.5(b)

DETAILS OF OPEN POSITIONS

(This form should be attached to Form 38.5(b))

OPEN POSITIONS (Note 1)

Product name, e.g. Written or Number of Exercise Type, e.g. Expiry date
call option purchased securities to price (AUD) American,
which the option (Note2) European
or derivatives etc.
relates
Call warrant Written 590363 0.01 European 02-Jul-08
Call warrant Written 533913 0.01 European 02-Mar-12

Notes

1. Where there are open option positions or open derivative positions (except
for CFDs), full details should be given. Full details of any existing
agreements to purchase or to sell should also be given on this form.

2. For all prices and other monetary amounts, the currency must be stated.

For details of the Code's dealing disclosure requirements, see Rules 8 and 38.5
and their Notes which 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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