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EPT Disclosure - Amendment

15th May 2008 13:00

RNS Number : 5532U

Citigroup Derivatives Markets Inc

15 May 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)

Amendment

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	09 May 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	12,966 (0.00%)	19,700 (0.00%)
(2) Derivatives (other than options)	(0.00%)	(0.00%)
(3) Options and agreements to purchase/sell	111,200 (0.01%)	106,800 (0.01%)
Total	124,166 (0.01%)	126,500 (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

Purchase

Number of securities

Price per unit (Note 4)

USD (unless stated)

100

501.73

Total

100

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)
C	selling	-100	500	AMERICAN	2008-06-21	30
C	selling	-100	500	AMERICAN	2008-06-21	30
P	selling	-300	500	AMERICAN	2008-05-17	13.6
P	selling	-800	420	AMERICAN	2008-05-17	0.35

(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	15 May 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	14900	470	American	2008-07-19
P	purchased	7800	300	American	2008-07-19
C	purchased	6000	580	American	2008-07-19
C	purchased	5300	590	American	2008-07-19
C	purchased	5100	600	American	2008-07-19
C	purchased	4000	570	American	2008-07-19
P	purchased	3600	520	American	2008-07-19
C	purchased	3100	560	American	2008-07-19
C	purchased	3000	550	American	2008-07-19
C	purchased	2700	510	American	2008-05-17
C	purchased	2600	450	American	2008-07-19
P	purchased	2500	400	American	2008-07-19
P	purchased	2000	370	American	2008-05-17
P	purchased	2000	380	American	2008-05-17
C	purchased	2000	440	American	2008-07-19
C	purchased	2000	580	American	2008-07-19
C	purchased	2000	420	American	2008-10-18
C	purchased	2000	500	American	2008-10-18
C	purchased	1800	440	American	2008-10-18
P	purchased	1500	470	American	2008-05-17
C	purchased	1400	470	American	2008-05-17
C	purchased	1400	360	American	2008-07-19
P	purchased	1400	500	American	2008-07-19
P	purchased	1300	370	American	2008-05-17
P	purchased	1200	440	American	2008-10-18
P	purchased	1100	490	American	2008-07-19
C	purchased	1100	540	American	2008-07-19
C	purchased	1000	470	American	2008-06-21
P	purchased	1000	250	American	2008-07-19
P	purchased	1000	260	American	2008-07-19
P	purchased	1000	290	American	2008-07-19
P	purchased	1000	310	American	2008-07-19
P	purchased	1000	390	American	2008-07-19
P	purchased	1000	370	American	2008-10-18
C	purchased	1000	420	American	2008-10-18
P	purchased	1000	420	American	2008-10-18
C	purchased	1000	430	American	2008-10-18
C	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	900	380	American	2008-05-17
C	purchased	900	330	American	2008-07-19
P	purchased	800	400	American	2008-05-17
C	purchased	800	460	American	2008-10-18
P	purchased	700	300	American	2008-07-19
P	purchased	600	480	American	2008-05-17
C	purchased	500	430	American	2008-05-17
C	purchased	500	480	American	2008-05-17
P	purchased	500	450	American	2008-07-19
C	purchased	500	470	American	2008-07-19
C	purchased	500	550	American	2008-07-19
C	purchased	400	420	American	2008-05-17
P	purchased	400	490	American	2008-05-17
C	purchased	400	250	American	2008-07-19
P	purchased	400	330	American	2008-07-19
C	purchased	400	370	American	2008-07-19
C	purchased	300	520	American	2008-05-17
C	purchased	300	300	American	2008-07-19
C	purchased	300	330	American	2008-07-19
C	purchased	300	410	American	2008-07-19
C	purchased	300	480	American	2008-07-19
C	purchased	200	440	American	2008-05-17
P	purchased	200	450	American	2008-05-17
C	purchased	200	460	American	2008-05-17
P	purchased	200	460	American	2008-05-17
C	purchased	200	470	American	2008-05-17
C	purchased	200	480	American	2008-05-17
C	purchased	200	320	American	2008-07-19
P	purchased	200	330	American	2008-07-19
P	purchased	200	390	American	2008-07-19
C	purchased	100	250	American	2008-07-19
P	purchased	100	250	American	2008-07-19
P	purchased	100	280	American	2008-07-19
P	purchased	100	320	American	2008-07-19
C	purchased	100	390	American	2008-07-19
C	purchased	100	500	American	2008-07-19
C	purchased	100	520	American	2008-07-19
P	purchased	100	570	American	2008-07-19
P	purchased	100	580	American	2008-07-19
C	written	-100	410	American	2008-05-17
P	written	-100	430	American	2008-05-17
C	written	-100	500	American	2008-05-17
P	written	-100	500	American	2008-05-17
C	written	-100	510	American	2008-05-17
P	written	-100	510	American	2008-05-17
P	written	-100	450	American	2008-06-21
P	written	-100	460	American	2008-06-21
C	written	-100	520	American	2008-06-21
C	written	-100	320	American	2008-07-19
C	written	-100	350	American	2008-07-19
C	written	-100	360	American	2008-07-19
C	written	-100	430	American	2008-07-19
C	written	-100	440	American	2008-07-19
P	written	-100	460	American	2008-07-19
C	written	-100	530	American	2008-07-19
P	written	-100	400	American	2008-10-18
P	written	-100	430	American	2008-10-18
C	written	-200	400	American	2008-05-17
P	written	-200	410	American	2008-05-17
P	written	-200	440	American	2008-05-17
P	written	-200	500	American	2008-05-17
C	written	-200	500	American	2008-06-21
P	written	-200	310	American	2008-07-19
C	written	-200	420	American	2008-07-19
C	written	-200	460	American	2008-07-19
C	written	-300	480	American	2008-06-21
C	written	-300	480	American	2008-06-21
C	written	-300	420	American	2008-07-19
P	written	-400	430	American	2008-05-17
C	written	-400	470	American	2008-06-21
P	written	-400	410	American	2008-07-19
C	written	-500	400	American	2008-05-17
P	written	-500	490	American	2008-07-19
C	written	-600	440	American	2008-05-17
C	written	-600	490	American	2008-05-17
P	written	-600	380	American	2008-07-19
C	written	-600	400	American	2008-07-19
P	written	-600	420	American	2008-07-19
C	written	-600	450	American	2008-07-19
C	written	-600	440	American	2008-10-18
C	written	-900	370	American	2008-07-19
P	written	-900	470	American	2008-07-19
P	written	-900	510	American	2008-07-19
P	written	-900	600	American	2008-07-19
C	written	-1000	460	American	2008-06-21
P	written	-1000	270	American	2008-07-19
P	written	-1000	340	American	2008-07-19
P	written	-1000	350	American	2008-07-19
P	written	-1000	350	American	2008-07-19
C	written	-1000	380	American	2008-07-19
P	written	-1000	430	American	2008-07-19
P	written	-1000	440	American	2008-07-19
P	written	-1000	470	American	2008-07-19
C	written	-1000	490	American	2008-07-19
P	written	-1000	550	American	2008-07-19
C	written	-1000	590	American	2008-07-19
P	written	-1000	370	American	2008-10-18
P	written	-1000	380	American	2008-10-18
P	written	-1000	390	American	2008-10-18
P	written	-1000	460	American	2008-10-18
P	written	-1000	480	American	2008-10-18
P	written	-1100	440	American	2008-05-17
P	written	-1100	340	American	2008-07-19
C	written	-1100	430	American	2008-07-19
P	written	-1100	540	American	2008-07-19
P	written	-1100	450	American	2008-10-18
P	written	-1200	360	American	2008-07-19
P	written	-1200	410	American	2008-07-19
P	written	-1200	590	American	2008-07-19
P	written	-1300	410	American	2008-05-17
C	written	-1300	510	American	2008-07-19
P	written	-1400	360	American	2008-07-19
C	written	-1500	500	American	2008-07-19
P	written	-1600	400	American	2008-05-17
C	written	-1600	400	American	2008-07-19
C	written	-1700	490	American	2008-05-17
C	written	-1900	600	American	2008-07-19
P	written	-2000	420	American	2008-05-17
P	written	-2000	320	American	2008-07-19
P	written	-2000	440	American	2008-07-19
P	written	-2000	450	American	2008-07-19
C	written	-2600	500	American	2008-05-17
P	written	-2600	430	American	2008-07-19
C	written	-3000	480	American	2008-07-19
P	written	-3100	450	American	2008-05-17
C	written	-3100	300	American	2008-07-19
C	written	-3100	560	American	2008-07-19
C	written	-3700	520	American	2008-05-17
C	written	-3800	410	American	2008-07-19
P	written	-4100	460	American	2008-07-19
C	written	-17000	460	American	2008-07-19

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

EMMBBGDUIUBGGIU

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