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EPT Disclosure

28th Jul 2008 12:05

RNS Number : 0091A

Citigroup Derivatives Markets Inc

28 July 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	Citigroup Derivatives Markets Inc
Company dealt in	Rio Tinto plc
Class of relevant security to which the dealings being disclosed relate (Note 1)	Ordinary Shares (dealt in the form of ADRs)
Date of dealing	25 July 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	1,400 (0.00%)	37,562 (0.00%)
(2) Derivatives (other than options)	(0.00%)	(0.00%)
(3) Options and agreements to purchase/sell	103,600 (0.01%)	119,000 (0.01%)
Total	103,100 (0.01%)	157,962 (0.01%)

(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
Convertible	Number (%)	Number (%)
(1) Relevant securities	(0.00%)	(0.00%)
(2) Derivatives (other than options)	(0.00%)	(0.00%)
(3) Options and agreements to purchase/sell	(0.00%)	(0.00%)
Total	(0.00%)	(0.00%)

Rights to subscribe (Note 2)

Class of relevant security:

Details

3. DEALINGS (Note 3)

(a) Purchases and sales

Purchases	Number of securities	Price per unit (Note 4) USD (unless stated)
	800	437.5
	100	394.3
	100	394.3
Total	1,000

Sales

Number of securities

Price per unit (Note 4)

USD (unless stated)

(b) Derivatives transactions (other than options)

Product name,

e.g. CFD

Long/short (Note 5)

Number of securities (Note 6)

Price per unit (Note 4)

(i) Writing, selling, purchasing or varying

Product name, e.g. call option (C = call; P = put)	Writing, selling, purchasing, varying etc.	Number of securities to which the option relates (Note 6)	Exercise Price (USD)	Type, e.g. American, European etc.	Expiry date	Option money paid/received per unit (USD) (Note 4)
P	purchasing	1000	370	AMERICAN	2008-08-16	6.3
P	purchasing	800	480	AMERICAN	2008-08-16	42.5
P	purchasing	600	370	AMERICAN	2008-08-16	8.7
P	purchasing	100	370	AMERICAN	2008-08-16	8.7
P	purchasing	100	370	AMERICAN	2008-08-16	8.7
P	purchasing	100	370	AMERICAN	2008-08-16	7.8
P	purchasing	100	450	AMERICAN	2008-08-16	62.54
P	purchasing	100	450	AMERICAN	2008-08-16	62.3
P	purchasing	100	450	AMERICAN	2008-08-16	62.54
C	selling	-100	390	AMERICAN	2008-09-20	29.7
C	selling	-100	390	AMERICAN	2008-09-20	29.7
P	selling	-100	460	AMERICAN	2008-08-16	72.05
P	selling	-100	460	AMERICAN	2008-08-16	72.05
P	selling	-100	460	AMERICAN	2008-08-16	71.81
C	selling	-200	390	AMERICAN	2008-09-20	30.2

(ii) Exercising

Product name, e.g. call option

Number of securities

Exercise price per unit (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.

None

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

Date of disclosure	28 July 2008
Contact name	Pavla Trskova
Telephone number	02890 409544
Name of offeree/offeror with which connected	BHP Billiton plc
Nature of connection (Note 9)	Corporate Broker/Financial 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. call option	Written or purchased	Number of securities to which the option or derivative relates	Exercise price (Note 2)	Type, e.g. American, European etc.	Expiry date
C	purchased	7100	480	American	2008-08-16
P	purchased	5400	380	American	2009-01-17
C	purchased	5100	470	American	2008-08-16
C	purchased	4100	480	American	2008-08-16
C	purchased	3100	470	American	2008-08-16
C	purchased	3000	380	American	2009-01-17
P	purchased	3000	430	American	2009-01-17
P	purchased	3000	440	American	2009-01-17
C	purchased	3000	490	American	2008-08-16
C	purchased	2700	450	American	2008-08-16
C	purchased	2700	460	American	2008-08-16
P	purchased	2400	380	American	2009-01-17
C	purchased	2100	440	American	2008-10-18
C	purchased	2000	400	American	2009-01-17
P	purchased	2000	420	American	2009-01-17
P	purchased	2000	450	American	2009-01-17
P	purchased	2000	450	American	2009-01-17
P	purchased	2000	530	American	2009-01-17
P	purchased	2000	370	American	2008-08-16
P	purchased	2000	430	American	2008-09-20
C	purchased	2000	420	American	2008-10-18
P	purchased	1700	420	American	2008-09-20
C	purchased	1400	420	American	2008-08-16
C	purchased	1400	450	American	2008-08-16
C	purchased	1400	460	American	2008-08-16
P	purchased	1200	440	American	2008-10-18
P	purchased	1100	430	American	2009-01-17
C	purchased	1100	440	American	2008-08-16
P	purchased	1100	370	American	2008-10-18
P	purchased	1000	560	American	2010-01-16
C	purchased	1000	390	American	2009-01-17
P	purchased	1000	390	American	2009-01-17
P	purchased	1000	410	American	2009-01-17
C	purchased	1000	420	American	2009-01-17
P	purchased	1000	460	American	2009-01-17
P	purchased	1000	470	American	2009-01-17
C	purchased	1000	480	American	2009-01-17
P	purchased	1000	500	American	2009-01-17
P	purchased	1000	510	American	2009-01-17
C	purchased	1000	550	American	2009-01-17
P	purchased	1000	570	American	2009-01-17
C	purchased	1000	430	American	2008-08-16
C	purchased	1000	440	American	2008-08-16
C	purchased	1000	440	American	2008-08-16
C	purchased	1000	470	American	2008-08-16
C	purchased	1000	420	American	2008-10-18
P	purchased	1000	420	American	2008-10-18
P	purchased	1000	420	American	2008-10-18
C	purchased	1000	450	American	2008-10-18
P	purchased	1000	450	American	2008-10-18
C	purchased	1000	470	American	2008-10-18
C	purchased	1000	500	American	2008-10-18
P	purchased	800	450	American	2008-10-18
C	purchased	800	460	American	2008-10-18
C	purchased	700	600	American	2008-10-18
C	purchased	600	410	American	2008-08-16
C	purchased	600	430	American	2008-10-18
C	purchased	600	600	American	2008-10-18
C	purchased	500	420	American	2008-08-16
P	purchased	500	430	American	2008-10-18
P	purchased	400	400	American	2008-10-18
P	purchased	400	550	American	2008-10-18
C	purchased	300	400	American	2008-10-18
P	purchased	200	420	American	2009-01-17
C	purchased	200	490	American	2008-10-18
P	purchased	200	500	American	2008-10-18
P	purchased	100	390	American	2009-01-17
P	purchased	100	480	American	2009-01-17
C	purchased	100	370	American	2008-08-16
C	purchased	100	400	American	2008-08-16
P	purchased	100	470	American	2008-10-18
C	purchased	100	530	American	2008-10-18
P	purchased	100	540	American	2008-10-18
C	written	-100	540	American	2010-01-16
C	written	-100	500	American	2009-01-17
P	written	-100	430	American	2008-08-16
P	written	-100	400	American	2008-10-18
P	written	-100	430	American	2008-10-18
C	written	-100	450	American	2008-10-18
C	written	-100	460	American	2008-10-18
C	written	-100	660	American	2008-10-18
C	written	-100	700	American	2008-10-18
P	written	-200	410	American	2010-01-16
C	written	-200	550	American	2008-10-18
C	written	-200	580	American	2008-10-18
P	written	-300	420	American	2008-08-16
C	written	-300	430	American	2008-08-16
C	written	-400	500	American	2010-01-16
P	written	-400	550	American	2010-01-16
C	written	-400	390	American	2008-09-20
P	written	-500	390	American	2008-10-18
C	written	-600	440	American	2008-10-18
C	written	-600	470	American	2008-10-18
C	written	-600	500	American	2008-10-18
C	written	-700	600	American	2009-01-17
C	written	-800	300	American	2009-01-17
P	written	-800	460	American	2008-10-18
C	written	-900	590	American	2009-01-17
C	written	-1000	520	American	2010-01-16
C	written	-1000	530	American	2010-01-16
C	written	-1000	540	American	2010-01-16
C	written	-1000	550	American	2010-01-16
C	written	-1000	440	American	2009-01-17
C	written	-1000	470	American	2009-01-17
C	written	-1000	510	American	2009-01-17
C	written	-1000	580	American	2009-01-17
P	written	-1000	580	American	2009-01-17
P	written	-1000	400	American	2008-08-16
P	written	-1000	450	American	2008-08-16
C	written	-1000	490	American	2008-08-16
P	written	-1000	490	American	2008-08-16
P	written	-1000	380	American	2008-10-18
P	written	-1000	480	American	2008-10-18
C	written	-1000	540	American	2008-10-18
C	written	-1000	550	American	2008-10-18
C	written	-1000	550	American	2008-10-18
C	written	-1000	570	American	2008-10-18
C	written	-1000	590	American	2008-10-18
C	written	-1000	620	American	2008-10-18
C	written	-1000	620	American	2008-10-18
C	written	-1000	630	American	2008-10-18
C	written	-1000	640	American	2008-10-18
C	written	-1000	650	American	2008-10-18
C	written	-1000	660	American	2008-10-18
P	written	-1100	430	American	2008-08-16
P	written	-1700	370	American	2008-10-18
C	written	-1800	520	American	2008-10-18
P	written	-2000	380	American	2008-08-16
P	written	-2000	420	American	2008-08-16
P	written	-2000	440	American	2008-08-16
C	written	-2000	510	American	2008-10-18
P	written	-2600	410	American	2008-08-16
C	written	-2600	540	American	2008-10-18
C	written	-3000	560	American	2008-10-18
C	written	-3000	570	American	2008-10-18
P	written	-3100	390	American	2008-08-16
C	written	-3500	420	American	2008-10-18
P	written	-3800	450	American	2008-08-16
C	written	-4000	580	American	2008-10-18
C	written	-4200	530	American	2008-10-18
P	written	-5300	470	American	2008-08-16
P	written	-6300	460	American	2008-08-16
P	written	-9000	490	American	2008-08-16
P	written	-10200	480	American	2008-08-16
P	written	-11000	470	American	2008-08-16

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

END

EMMILFILDEITFIT

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