BIL - BHP Billiton Plc - Proposed combination with12 Nov 2007
BIL
 BIBLT                                                                           
BIL - BHP Billiton Plc - Proposed combination with Rio Tinto to unlock value    
BHP Billiton Plc                                                                
Share code: BIL                                                                 
ISIN: GB0000566504                                                              
12 November 2007                                                                
Number                                                                          
33/07                                                                           
BHP BILLITON`S PROPOSED COMBINATION WITH RIO TINTO TO UNLOCK VALUE              
HIGHLIGHTS                                                                      
*    Combination to create the world`s premier diversified natural resources    
    company                                                                     
*    Unique portfolio of large-scale, low-cost, long-life assets                
*    US$3.7 billion per annum in quantified synergies achieved through          
    efficiencies and acceleration of volumes to meet strong customer demand     
*    Three BHP Billiton shares for each Rio Tinto share equivalent to a premium 
of approximately 28 per cent for Rio Tinto shareholders                     
*    All share proposal gives Rio Tinto shareholders exposure to the world`s    
    premier diversified natural resources company                               
*    Value enhancing for BHP Billiton shareholders with exposure to synergies   
captured, strengthened asset portfolio and unrivalled future growth         
    pipeline                                                                    
*    US$30 billion post-completion buy-back intended                            
*    Cash flow and earnings per share accretive from the first full fiscal year 
following completion                                                        
1    Introduction                                                               
The Board of BHP Billiton has recently written to the Board of Rio Tinto        
proposing a combination of their respective companies to create an organisation 
without peer in the natural resources industry.  The Board of BHP Billiton has  
sought and continues to seek to engage in discussions with Rio Tinto with a view
to obtaining the support and recommendation of the Board of Rio Tinto for this  
proposal.  To date Rio Tinto has not agreed to these discussions.               
BHP Billiton now considers it appropriate to make BHP Billiton and Rio Tinto    
shareholders aware of this proposal so that it can seek their support for       
discussions between the two companies. This announcement is intended to provide 
information about BHP Billiton`s proposal and does not constitute an offer and  
there can be no assurance that any combination or offer will result.            
It is proposed that the combination of BHP Billiton and Rio Tinto be completed  
by two inter-conditional schemes of arrangement with each Rio Tinto shareholder 
receiving three BHP Billiton shares for each Rio Tinto share held.              
This share exchange ratio implies a premium of approximately 28 per cent to the 
combined volume weighted average market capitalisations of Rio Tinto Limited and
Rio Tinto plc over the month ended 31 October 2007 (being the last date prior to
BHP Billiton`s approach to Rio Tinto), based on volume weighted average BHP     
Billiton share prices over the same period.                                     
Importantly, with the all share proposal, Rio Tinto shareholders receive not    
only the premium, but also pro rata access to the current and future economic   
benefits of the combination, including a pro rata share of synergies.           
This combination is value enhancing for BHP Billiton shareholders, who also gain
from a pro rata share of synergies, strengthened asset portfolio and unrivalled 
future growth pipeline.                                                         
2    Unlocking Value                                                            
BHP Billiton firmly believes that the rationale for combining BHP Billiton and  
Rio Tinto is compelling due to the strategic fit, the expected synergies and the
opportunity to create an organisation without parallel.  This combination will  
unlock unique value for both BHP Billiton and Rio Tinto shareholders.           
A.   Strategic Fit                                                          
BHP Billiton considers the combination of BHP Billiton and Rio Tinto as the most
logical and compelling consolidation opportunity for both companies. The fit in 
terms of values, strategy, asset mix and quality, as well as culture, is without
comparison in the natural resources industry.                                   
The two companies each have portfolios of large-scale, low-cost, long-life      
assets that are highly complementary and, when combined, would be without peer. 
Importantly, the proposal offers material benefits unique to this combination   
because of the common and overlapping presence in a number of major resource    
basins and joint ownership interests.                                           
*    The overlaps offer unique opportunities for material value creation from   
    realising further economies of scale, sharing infrastructure and removing   
duplication.  The unique value arises from combining the operations in a    
    number of major resource basins, especially:                                
*    faster and more efficient development of the combined iron ore resources in
    Western Australia;                                                          
*    optimisation of the Australian coal operations in the Hunter Valley and the
    Bowen Basin; and                                                            
*    improved and expanded development of brownfield and greenfield             
    opportunities within the combined Aluminium, Base Metals, Diamonds and      
Industrial Minerals businesses.                                             
*    By combining the two development portfolios, optimising the development    
    sequence and utilising the combined infrastructure, the development of new  
    production can be substantially brought forward, and the long-term value    
and utilisation of the resources can be optimised.                          
*    Looking beyond the current development portfolios, both companies are      
    seeking to develop resources in new geographies that frequently have high   
    infrastructure and other costs, as well as increased risks. Combined, BHP   
Billiton and Rio Tinto would have greater ability and increased             
    opportunities to develop the next generation of world-scale projects in     
    these new regions, for the benefit of customers, local communities and      
    shareholders.                                                               
B.   Quantified Synergies                                                   
This combination is expected to generate material synergies - the total being   
unique to a combination of BHP Billiton and Rio Tinto due to the substantial    
overlap in neighbouring and jointly-owned operations, combined with the usual   
areas of duplication. In particular, BHP Billiton expects:                      
*    US$1.7 billion nominal per annum of cost savings in the third full year    
    following completion, achieved through removal of duplication as well as    
    procurement and operating efficiency savings; and                           
*    further EBITDA enhancement of US$2.0 billion nominal per annum in the      
    seventh full year following completion, driven primarily by the             
    acceleration of volumes to customers.                                       
In the seventh full year following completion this, therefore, gives a total    
incremental EBITDA of US$3.7 billion nominal per annum of quantified synergies. 
The total one-off implementation cash costs related to achieving these synergies
are expected to amount to US$0.65 billion over the first two full years         
following completion.                                                           
This estimate of cost savings and further EBITDA enhancement has been reported  
on under the City Code on Takeovers and Mergers by KPMG and by BHP Billiton`s   
financial advisor Goldman Sachs International.  Copies of their letters are     
included in parts (a) and (b) respectively of Appendix II.                      
The estimate of cost savings and further EBITDA enhancement should be read in   
conjunction with notes (s) to (w) of Appendix I.                                
    C.   Unparalleled Organisation                                              
BHP Billiton and Rio Tinto have aligned values and similar management processes.
Both companies share core values focussed on global best practice in safety,    
community and environment.                                                      
Created from this combination is a deep pool of talent, scarce in the current   
strong resources market, and BHP Billiton anticipates that key management       
positions would be filled by drawing on the best of both management teams.      
In addition, BHP Billiton would invite a number of Rio Tinto`s independent      
directors to join the combined Board.                                           
3    A Deliverable Proposal                                                     
BHP Billiton has spent considerable time formulating its proposal to Rio Tinto  
and is highly confident that it can be successfully completed.                  
Manageable Regulatory Issues                                                    
BHP Billiton has undertaken a thorough analysis of the anti-trust implications  
of this combination and is confident that anti-trust issues present no          
significant barriers to completing the proposed transaction, and that any       
possible regulatory concerns can be readily addressed. BHP Billiton considers   
that this process should not impact in a meaningful way either the future       
prospects of the combined group or the amount and achievability of synergies.   
Importantly, the expanded growth options and speed-to-market benefits available 
to the combined group would provide material pro-competitive benefits in key    
commodity markets, to the advantage of customers.                               
BHP Billiton expects the regulatory focus to centre on the combined iron ore    
businesses, where the combined group would have a share of contestable iron ore 
sales of approximately 27 per cent.  In the supply of iron ore, prices are set  
by supply and demand and the cost of marginal production.  The combined group`s 
assets would be low cost in comparison to the marginal producer, meaning the    
combined group would have an incentive to invest in those assets and to grow    
production.  In addition, BHP Billiton expects emerging and new low-cost        
producers will increase competition in what is a rapidly evolving marketplace.  
BHP Billiton expects that obtaining the regulatory approvals will take between 9
and 12 months, allowing for a detailed review by the regulators.                
    B.   Clear Benefits for Customers                                           
This proposal will enable the combined group to better serve the needs of       
customers.  Together, BHP Billiton and Rio Tinto will be able to deliver        
increased product volumes to market more quickly, against a backdrop of growing 
demand.  Supply logistics can be optimised by way of blending or improved       
delivery options resulting in greater security of supply to customers.  The     
combination will create a unique portfolio of low-cost, world-class assets which
will enable product to be delivered to customers throughout global economic     
cycles.                                                                         
    C.   Preserves Dual Listed Companies (DLC) Structure                        
In order to deliver the value of the combination to all shareholders, BHP       
Billiton has proposed that the transaction be structured as an all share        
exchange at a fixed ratio, preserving the DLC structure and each listing        
domicile for Rio Tinto shareholders.                                            
Only a combination of BHP Billiton and Rio Tinto could readily accommodate both 
parts of Rio Tinto`s DLC structure.                                             
    D.   Shareholder and Other Approvals                                        
BHP Billiton continues to seek the support and recommendation of the Board of   
Rio Tinto for its proposal, which would be subject to receipt of all appropriate
required anti-trust and regulatory approvals.  BHP Billiton has proposed that   
the combination of BHP Billiton and Rio Tinto be completed by two inter-        
conditional schemes of arrangement, the implementation of which would require   
approvals of both BHP Billiton and Rio Tinto shareholders and court approvals.  
4    Value Proposition for All Shareholders                                     
    A.   Compelling Premium and Ongoing Participation for Rio Tinto             
Shareholders                                                                    
On a pro forma basis, Rio Tinto shareholders would own approximately 41 per cent
of the combined group (excluding intra-company cross-holdings).                 
BHP Billiton has proposed that the terms for the combination would involve each 
Rio Tinto shareholder receiving three BHP Billiton shares for each Rio Tinto    
share. More specifically, the proposed consideration would be structured as:    
three BHP Billiton Limited shares for each Rio Tinto Limited share; and         
three BHP Billiton shares for each Rio Tinto plc share consisting of 80 per cent
BHP Billiton Plc shares and 20 per cent BHP Billiton Limited shares. The        
consideration for Rio Tinto plc shareholders would be structured on a mix and   
match basis.                                                                    
Based on the closing prices of a BHP Billiton Limited Ordinary Share of A$46.10 
and a BHP Billiton Plc Ordinary Share of GBP18.31 on 31 October 2007 (being the 
last date prior to BHP Billiton`s approach to Rio Tinto), the proposal values:  
*    each Rio Tinto Limited Ordinary Share at A$138.30 and the issued ordinary  
    share capital of Rio Tinto Limited at A$39.5 billion; and                   
*    each Rio Tinto plc Ordinary Share at GBP56.28 and the issued ordinary share
capital of Rio Tinto plc at GBP56.1 billion.                                
Based on the closing prices of BHP Billiton Limited and BHP Billiton Plc shares 
on 31 October 2007, the total consideration offered to shareholders of Rio Tinto
Limited and Rio Tinto plc is US$153.2 billion. This implies a premium of        
approximately:                                                                  
*    25 per cent to the combined market capitalisations of Rio Tinto Limited and
    Rio Tinto plc on 31 October 2007 of US$122.1 billion; and                   
*    30 per cent to the combined volume weighted average market capitalisations 
of Rio Tinto Limited and Rio Tinto plc over the month ended 31 October 2007 
    of US$118.2 billion                                                         
Based on the volume weighted average prices of BHP Billiton Limited and BHP     
Billiton Plc shares for the month ended 31 October 2007, the total consideration
to shareholders of Rio Tinto Limited and Rio Tinto plc is US$151.2 billion.     
This implies a premium of approximately                                         
*    28 per cent to the combined volume weighted average market capitalisations 
    of Rio Tinto Limited and Rio Tinto plc over the same period.                
Based on BHP Billiton`s closing share prices on 9 November 2007, the total      
consideration offered to shareholders of Rio Tinto Limited and Rio Tinto plc is 
US$138.1 billion, which represents a premium of approximately 15 per cent to the
combined market capitalisations of Rio Tinto Limited and Rio Tinto plc on 8     
November 2007 and 7 November 2007, respectively, being market capitalisations   
reflecting closing prices of Rio Tinto Limited and Rio Tinto plc shares         
immediately prior to BHP Billiton`s announcement on 8 November 2007 in response 
to speculation about a potential offer for Rio Tinto at a premium.              
The issue of BHP Billiton Limited shares as a portion of the consideration to   
Rio Tinto plc shareholders will rebalance the DLC legs to approximately equal   
size.                                                                           
Rio Tinto shareholders resident in Australia and the United Kingdom will be able
to benefit from capital gains tax rollover relief, other than possibly in       
respect of BHP Billiton Limited shares that are received by Rio Tinto plc       
shareholders.                                                                   
    B.   Continued Participation by Both Sets of Shareholders                   
Importantly, the proposal does not require any Rio Tinto shareholder to exit; it
delivers to Rio Tinto shareholders not only the premium, but also pro rata      
access to the current and future economic benefits of the combination, including
a pro rata share of synergies.                                                  
The combination of BHP Billiton and Rio Tinto is value enhancing for BHP        
Billiton shareholders.  In creating the world`s premier diversified natural     
resources company, BHP Billiton shareholders will benefit from a pro rata       
exposure to the substantial synergies to be captured and a strengthened asset   
portfolio and future growth pipeline.                                           
BHP Billiton expects the combination to be cash flow per share and earnings per 
share accretive to BHP Billiton shareholders from the first full fiscal year    
following completion.                                                           
C.   Financial Strength                                                     
Importantly, the combined group would be uniquely positioned to meet the strong 
demand that both companies are presently enjoying from China, India and other   
high growth economies, which is expected to continue.                           
The combination of BHP Billiton`s and Rio Tinto`s high-quality, low-cost, long- 
life assets, with enhanced commodity and geographic diversification, and        
additional value enhancement through merger synergies, would enable the combined
group to deliver strong long-term performance throughout commodity cycles.      
The combined group would have superior cash flows; BHP Billiton`s intention is  
for the combined group to target a single A credit rating.  BHP Billiton        
estimates that the combined group would have the financial flexibility to return
significant capital to its shareholders, and intends to make the first such     
return following completion through an initial share buy-back (or other         
appropriate mechanism) of approximately US$30 billion. This cash distribution   
would allow the combined group to have an efficient balance sheet while         
maintaining flexibility for future investment.                                  
BHP Billiton believes that Rio Tinto has in place financing arrangements of     
US$40 billion to fund the acquisition of Alcan Inc, which include a change of   
control clause.                                                                 
BHP Billiton intends to maintain a progressive dividend policy.                 
5    Information on BHP Billiton                                                
BHP Billiton is headquartered in Melbourne, Australia, and is the world`s       
largest global diversified natural resources company. BHP Billiton is listed on 
stock exchanges in Australia (ASX), United Kingdom (LSE), United States (NYSE), 
South Africa (JSE), Germany (Frankfurt) and Switzerland (Zurich).  As at Friday,
9 November, 2007, BHP Billiton had a market capitalisation of US$206.7 billion. 
BHP Billiton has approximately 39,000 employees working in more than 100        
operations in approximately 25 countries.  For the financial year ended 30 June 
2007, BHP Billiton reported revenue, together with its share of jointly         
controlled entities` revenue, of US$47.5 billion, underlying earnings before    
interest and tax (underlying EBIT) of US$20.1 billion, net profit attributable  
to shareholders of US$13.4 billion and net operating cash flow of US$15.6       
billion. As at 30 June 2007, BHP Billiton had net assets of US$29.9 billion.    
BHP Billiton operates ten business units or Customer Sector Groups (CSGs),      
aligned with the commodities which the company extracts and markets. The ten    
CSGs are Aluminium, Base Metals, Diamonds and Specialty Products, Energy Coal,  
Iron Ore, Manganese, Metallurgical Coal, Petroleum, Stainless Steel Materials   
and Uranium.                                                                    
*    The Aluminium CSG`s (12 per cent of total BHP Billiton FY2007 revenue)     
    principal activities are the mining of bauxite, refining of bauxite into    
alumina and smelting of alumina into aluminium metal. The CSG has           
    operations in Australia, Brazil, Mozambique, South Africa, and Suriname.    
*    The Base Metals CSG`s (27 per cent of total BHP Billiton FY2007 revenue)   
    principal activities are the mining of copper, silver, lead, zinc,          
molybdenum, uranium and gold. A separate Uranium CSG was created in July    
    2007.  Its principal activities are the production and marketing of uranium 
    and the operation and development of the Olympic Dam ore body.   The        
    Uranium CSG`s results will be reported as part of the consolidated Base     
Metals CSG`s results.  The Base Metals CSG has operations in Australia,     
    Chile, Peru and the United States.                                          
*    The Diamonds and Specialty Products CSG`s (two per cent of total BHP       
    Billiton FY2007 revenue) principal activities are the mining of diamonds    
and titanium minerals. The CSG has operations in Canada and South Africa.   
*    The Energy Coal CSG`s (10 per cent of total BHP Billiton FY2007 revenue)   
    principal activities are the mining and marketing of export thermal         
    (energy) coal. The CSG has operations in Australia, Colombia, South Africa  
and the United States.                                                      
*    The Iron Ore CSG`s (12 per cent of total BHP Billiton FY2007 revenue)      
    principal activities are the mining of iron ore from a number of mines. The 
    CSG`s principal operations are based in the Pilbara region of north Western 
Australia and in Brazil.                                                    
*    The Manganese CSG`s (three per cent of total BHP Billiton FY2007 revenue)  
    principal activities are the mining of manganese ore and production of      
    manganese metal and alloys. The CSG has operations in Australia and South   
Africa.                                                                     
*    The Metallurgical Coal CSG`s (eight per cent of total BHP Billiton FY2007  
    revenue) principal activities are the mining of metallurgical coal in       
    Australia.                                                                  
*    The Petroleum CSG`s (12 per cent of total BHP Billiton FY2007 revenue)     
    principal activities are oil and gas exploration, production, development   
    and marketing in Australia, the United Kingdom, the United States, Algeria, 
    Trinidad and Tobago, and Pakistan.                                          
*    The Stainless Steel Materials CSG`s (15 per cent of total BHP Billiton     
    FY2007 revenue) principal activities are producing nickel concentrate       
    primarily for the stainless steel industry. The CSG operates a number of    
    mines, concentrators, smelters and refineries in Australia and Colombia.    
6    Information on Rio Tinto                                                   
Rio Tinto is headquartered in London, United Kingdom and is listed on the       
Australian, London and New York stock exchanges.  As at Friday, 9 November,     
2007, Rio Tinto had a market capitalisation of US$151.7 billion.                
Rio Tinto has operations worldwide with strong representation in Australia and  
North America and significant businesses in South America, Asia, Europe and     
southern Africa.  Through its global operations, Rio Tinto produces iron ore,   
metallurgical and thermal coal, copper, bauxite, alumina, aluminium, uranium and
diamonds as well as other base metals and industrial minerals.                  
Rio Tinto has recently expanded its aluminium operations with the acquisition of
a majority interest in Alcan, creating the world`s leading supplier of          
aluminium.                                                                      
7    Management and Employees                                                   
The existing employment rights, including pension rights, of all management and 
employees of Rio Tinto will be fully safeguarded.                               
8    Regulation                                                                 
The proposal would be subject to satisfaction or waiver of Regulatory Pre-      
conditions, relating to the obtaining of regulatory clearances from the European
Union, Australia, the United States, Canada and South Africa.                   
This announcement does not constitute a firm intention to make an offer and,    
accordingly, there can be no assurance that any offer will be made, even if     
these Regulatory Pre-conditions are satisfied or waived.                        
9    General                                                                    
In accordance with Rule 2.10 of the UK City Code, as at Friday, 9 November 2007,
2,256,993,546 BHP Billiton Plc Ordinary Shares (including 20,072,510 BHP        
Billiton Ordinary Shares held by BHP Billiton Limited) and 3,358,359,496 BHP    
Billiton Limited Ordinary Shares were in issue.  The International Securities   
Identification Number for BHP Billiton Limited Ordinary Shares is AU000000BHP4  
and for BHP Billiton Plc Ordinary Shares is GB0000566504.                       
10   Further Details                                                            
A media teleconference with Marius Kloppers, including a question and answer    
session, will be held at 8:00 AM GMT (7:00 PM AEDT) today. Dial-in details will 
be provided separately.                                                         
There will be a joint presentation to analysts and investors on this            
announcement in London at 9:00 AM GMT (8:00 PM AEDT) today at Goldman Sachs     
International, River Court Building, 120 Fleet Street, London EC4A 2BB and at   
Goldman Sachs JBWere, Level 42, Governor Phillip Tower, 1 Farrer Place, Sydney, 
with a web-casting facility on BHP Billiton`s web site (www.bhpbilliton.com).   
There will also be a dial-in conference call facility for the presentation.     
Dial-in details will be provided separately.                                    
A recording of the presentation will be accessible through BHP Billiton`s web   
site.                                                                           
Contacts                                                                        
Australia                               United Kingdom                          
Samantha Evans, Media Relations         Andre Liebenberg, Investor Relations    
Tel: +61 3 9609 2898  Mobile: +61 400   Tel: +44 20 7802 4131  Mobile: +44      
693 915                                 7920 236 974                            
email:Samantha.Evans@bhpbilliton.com    email:Andre.Liebenberg@bhpbilliton.com  
Jane Belcher, Investor Relations        Illtud Harri, Media Relations           
Tel: +61 3 9609 3952                    Tel: +44 20 7802 4195                   
Mobile: +61 417 031 653                 Mobile: +44 7920 237 246                
email:Jane.H.Belcher@bhpbilliton.com    email: Illtud.Harri@bhpbilliton.com     

United States                           South Africa                            
Tracey Whitehead, Investor & Media      Alison GIlbert, Investor Relations      
Relations                               Tel: SA +27 11 376 2121 or              
Tel: US +1 713 599 6100 or              UK +44 20 7802 4183                     
UK +44 20 7802 4031                     Mobile: +44 7769 936 227                
Mobile: +44 7917 648 093                Email: Alison.Gilbert@bhpbilliton.com   
email:Tracey.Whitehead@bhpbilliton.com                                          
This announcement is for information purposes only and does not constitute an   
offer or invitation to acquire or dispose of any securities or investment advice
or a proposal to make a takeover bid in any jurisdiction.                       
The directors of BHP Billiton accept responsibility for the information         
contained in this announcement.  Having taken all reasonable care to ensure that
such is the case, the information contained in this announcement is, to the best
of the knowledge and belief of the directors of BHP Billiton, in accordance with
the facts and contains no omission likely to affect its import.                 
The release, publication or distribution of this announcement in jurisdictions  
other than the United Kingdom and Australia may be restricted by law and        
therefore any persons who are subject to the laws of any other jurisdiction     
should inform themselves about, and observe, any applicable requirements.  This 
announcement has been prepared for the purposes of complying with English and   
Australian law and the UK City Code and the information disclosed may not be the
same as that which would have been disclosed if this announcement had been      
prepared in accordance with the laws of other jurisdictions.                    
It is possible that this announcement could or may contain forward looking      
statements that are based on current expectations or beliefs, as well as        
assumptions about future events.  Reliance should not be placed on any such     
statements because of their very nature, they are subject to known and unknown  
risks and uncertainties and can be affected by other factors that could cause   
actual results, and BHP Billiton`s plans and objectives, to differ materially   
from those expressed or implied in the forward looking statements.              
None of the statements concerning expected cost savings, revenue benefits (and  
resulting incremental EBITDA) and EPS accretion in this announcement should be  
interpreted to mean that the future earnings per share of the enlarged BHP      
Billiton group for current or future financial years will necessarily match or  
exceed the historical or published earnings per share of BHP Billiton, and the  
actual cost savings and revenue benefits (and resulting EBITDA enhancement) may 
be materially greater or less than estimated.                                   
There are several factors which could cause actual results to differ materially 
from those expressed or implied in forward looking statements.  Among the       
factors that could cause actual results to differ materially from those         
described in the forward looking statements are BHP Billiton`s ability to       
successfully combine the businesses of BHP Billiton and Rio Tinto and to realise
expected synergies from that combination, changes in the global, political,     
economic, business, competitive, market and regulatory forces, future exchange  
and interest rates, changes in tax rates and future business combinations or    
dispositions.                                                                   
BHP Billiton does not undertake any obligation (except as required by law, the  
Listing Rules of ASX Limited or the rules of the UK Listing Authority and the   
London Stock Exchange) to revise or update any forward looking statement        
contained in this announcement, regardless of whether those statements are      
affected as a result of new information, future events or otherwise.            
This announcement does not constitute an offer to sell or invitation to purchase
any securities or the solicitation of any vote or approval in any jurisdiction. 
In connection with BHP Billiton`s proposed combination with Rio Tinto by way of 
the proposed Schemes of Arrangement ("Schemes"), the new BHP Billiton shares to 
be issued to Rio Tinto shareholders under the terms of  the Schemes have not    
been, and will not be, registered under the US Securities Act of 1933, as       
amended, or under the securities laws of any state, district or other           
jurisdiction of the United States, and no regulatory clearances in respect of   
the new BHP Billiton shares have been, or (possibly with certain limited        
exceptions) will be, applied for in any jurisdiction of the United States.  It  
is expected that the new BHP Billiton shares will be issued in reliance upon the
exemption from the registration requirements of the US Securities Act provided  
by Section 3(a)(10) thereof.                                                    
In the event that the proposed Schemes do not qualify (or BHP Billiton otherwise
elects pursuant to its right to proceed with the transaction in a manner that   
does not qualify) for an exemption from the registration requirements of the US 
Securities Act, BHP Billiton would expect to register the offer and sale of     
securities it would issue to Rio Tinto US shareholders and Rio Tinto ADS holders
by filing with the SEC a Registration Statement (the "Registration Statement"), 
which will contain a prospectus ("Prospectus"), as well as other relevant       
materials.  No such materials have yet been filed. This communication is not a  
substitute for any Registration Statement or Prospectus that BHP Billiton may   
file with the SEC.                                                              
U.S. INVESTORS AND U.S. HOLDERS OF RIO TINTO SECURITIES AND ALL HOLDERS OF RIO  
TINTO ADSs ARE URGED TO READ ANY REGISTRATION STATEMENT, PROSPECTUS AND ANY     
OTHER DOCUMENTS MADE AVAILABLE TO THEM AND/OR FILED WITH THE SEC REGARDING THE  
POTENTIAL TRANSACTION, AS WELL AS ANY AMENDMENTS AND SUPPLEMENTS TO THOSE       
DOCUMENTS, IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT
INFORMATION.                                                                    
If and when filed, investors and security holders will be able to obtain a free 
copy of the Registration Statement, the Prospectus as well as other relevant    
documents filed with the SEC at the SEC`s website (http://www.sec.gov), once    
such documents are filed with the SEC.  Copies of such documents may also be    
obtained from BHP Billiton without charge, once they are filed with the SEC.    
Dealing Disclosure Requirements                                                 
Under the provisions of Rule 8.3 of the Takeover Code (the "Code"), if any      
person is, or becomes, "interested" (directly or indirectly) in 1 per cent or   
more of any class of "relevant securities" of any of BHP Billiton Plc, BHP      
Billiton Limited,  Rio Tinto plc or Rio Tinto Limited, all "dealings" in any    
"relevant securities" of that company (including by means of an option in       
respect of, or a derivative referenced to, any such "relevant securities") must 
be publicly disclosed by no later than 3.30 pm (London time) on the London      
business day following the date of the relevant transaction.                    
The relevant disclosure must also include details of all "interests" or         
"dealings" in any class of "relevant securities" of the other company which is  
part of its DLC structure. Therefore, if, for example, a disclosure is being    
made in respect of a dealing in securities of BHP Billiton Plc, an accompanying 
disclosure must also be made of interests or short positions held in securities 
of BHP Billiton Limited, even if the person`s interest or short position is less
than 1 per cent of the relevant class. The same approach should be adopted in   
respect of securities of Rio Tinto plc and Rio Tinto Limited. Therefore, each   
disclosure should consist of two Rule 8.3 disclosure forms, one for the Plc arm 
of the DLC structure and one for the Limited arm of the DLC structure, released 
as one announcement.                                                            
This requirement will continue until the date on which the "offer period" ends. 
If two or more persons act together pursuant to an agreement or understanding,  
whether formal or informal, to acquire an "interest" in "relevant securities" of
BHP Billiton Plc, BHP Billiton Limited, Rio Tinto plc or Rio Tinto Limited, they
will be deemed to be a single person for the purpose of Rule 8.3.               
Under the provisions of Rule 8.1 of the Code, all "dealings" in "relevant       
securities" of either BHP Billiton or Rio Tinto by BHP Billiton or Rio Tinto, or
by any of their respective "associates", must be disclosed by no later than     
12.00 noon (London time) on the London business day following the date of the   
relevant transaction.                                                           
A disclosure table, giving details of the companies in whose "relevant          
securities" "dealings" should be disclosed, and the number of such securities in
issue, can be found on the Takeover Panel`s website at                          
www.thetakeoverpanel.org.uk.                                                    
"Interests in securities" arise, in summary, when a person has long economic    
exposure, whether conditional or absolute, to changes in the price of           
securities. In particular, a person will be treated as having an "interest" by  
virtue of the ownership or control of securities, or by virtue of any option in 
respect of, or derivative referenced to, securities.                            
Terms in quotation marks are defined in the Code, which can also be found on the
Panel`s website. If you are in any doubt as to whether or not you are required  
to disclose a "dealing" under Rule 8, you should consult the Panel.             
APPENDIX I                                                                      
Bases and Sources of Information                                                
A    Unless otherwise stated, financial and other information concerning BHP    
    Billiton and Rio Tinto has been extracted or derived from the interim       
statements, preliminary results and the annual report and accounts of each  
    company for the relevant periods, or from published sources or from BHP     
    Billiton management sources.                                                
B    Unless otherwise stated, average share prices and market capitalisations   
throughout this announcement reflect volume-weighted averages.              
C    The market value of BHP Billiton Limited shares is based on the closing    
    price of a BHP Billiton Limited share of A$46.10, provided by the           
    Australian Securities Exchange on 31 October 2007, being the last date      
prior to BHP Billiton`s approach to Rio Tinto.                              
D    The market value of BHP Billiton Plc shares is based on the closing middle-
    market price of a BHP Billiton Plc share of GBP18.31, provided by the       
    London Stock Exchange on 31 October 2007, being the last date prior to BHP  
Billiton`s approach to Rio Tinto.                                           
E    The volume weighted average closing share price over the calendar month    
    ended 31 October 2007, being the last date prior to BHP Billiton`s approach 
    to Rio Tinto, is A$45.77 for BHP Billiton Limited and GBP17.99 for BHP      
Billiton Plc.                                                               
F    The market value of BHP Billiton Limited shares is based on the closing    
    price of a BHP Billiton Limited share of A$42.47, provided by the           
    Australian Securities Exchange on 9 November 2007, being the last           
practicable date prior to this announcement.                                
G    The market value of BHP Billiton Plc shares is based on the closing middle-
    market price of a BHP Billiton Plc share of GBP16.28, provided by the       
    London Stock Exchange on 9 November 2007, being the last practicable date   
prior to this announcement.                                                 
I    As at 9 November 2007 (being the last practicable date prior to this       
    announcement) there were 2,256,993,546 BHP Billiton Plc shares (including   
    20,072,510 BHP Billiton Plc shares held by BHP Billiton Limited) and        
3,358,359,496 BHP Billiton Ltd shares in issue.                             
J    The market value of Rio Tinto Limited shares is based on the closing price 
    of a Rio Tinto Limited share of A$110.00, provided by the Australian        
    Securities Exchange on 31 October 2007, being the last date prior to BHP    
Billiton`s approach to Rio Tinto.                                           
K    The market value of Rio Tinto plc shares is based on the closing middle-   
    market price of a Rio Tinto plc share of GBP44.90, provided by the London   
    Stock Exchange on 31 October 2007, being the last date prior to BHP         
Billiton`s approach to Rio Tinto.                                           
L    The volume weighted average closing share price over the calendar month    
    ended 31 October 2007, being the last date prior to BHP Billiton`s approach 
    to Rio Tinto is A$109.20 for Rio Tinto Limited and GBP43.09 for Rio Tinto   
plc.                                                                        
M    The market value of Rio Tinto Limited shares is based on the closing price 
    of a Rio Tinto Limited share of A$130.90, provided by the Australian        
    Securities Exchange on 9 November 2007, being the last practicable date     
prior to this announcement.                                                 
N    The market value of Rio Tinto plc shares is based on the closing middle-   
    market price of a Rio Tinto plc share of GBP56.24, provided by the London   
    Stock Exchange on 9 November 2007, being the last practicable date prior to 
this announcement.                                                          
O    As at 9 November 2007 (being the last practicable date prior to this       
    announcement) there were 456,815,943 Rio Tinto Limited shares and           
    997,082,015 Rio Tinto plc shares in issue. Rio Tinto plc, through THA       
Holdings Australia Pty Limited, holds 171,072,520 shares in Rio Tinto       
    Limited.                                                                    
P    All references to the share capital or market capitalisation of Rio Tinto  
    Limited refer to the publicly traded shares, or free float, of Rio Tinto    
Limited, which excludes the Rio Tinto Limited shares held by a wholly-owned 
    subsidiary of Rio Tinto plc.                                                
Q    All references to the share capital or market capitalisation of BHP        
    Billiton exclude shares held as treasury shares and shares currently held   
by BHP Billiton Limited in BHP Billiton Plc and not yet cancelled.          
R    The exchange rate of 2.077 US$/GBP and 0.927 US$/A$ on 31 October 2007     
    The exchange rate of 2.095 US$/GBP and 0.914 US$/A$ on 9 November 2007      
S    All reference to nominal figures assume an inflation rate of 2.5 per cent  
T    In arriving at the estimate of cost savings and revenue benefits, the Board
    of BHP Billiton has assumed the following:                                  
-    that there will be no significant impact on the combined group arising from
    any decisions made by competition authorities;                              
-    that there will be no material change to the market dynamics in the        
    combined core markets following completion. In particular, BHP Billiton has 
    based these estimates on its understanding of current and future market     
    supply, demand and pricing levels; and                                      
-    there will be no material change to the relative exchange rates in the     
    combined core markets and geographies following completion.                 
U    In arriving at the estimate of cost savings and revenue benefits, the Board
    of BHP Billiton has assumed that there are comparable operations, processes 
and procedures within Rio Tinto, except where publicly available            
    information clearly indicates otherwise. BHP Billiton`s management, through 
    a detailed understanding of BHP Billiton`s cost structure, has determined   
    the source and scale of realisable cost savings. The one-off implementation 
cash costs of achieving the cost savings and revenue benefits represents    
    those costs which are incremental to BHP Billiton`s existing plans.  In     
    addition to BHP Billiton management`s information, the sources of           
    information that BHP Billiton has used to arrive at the estimate of cost    
savings include:                                                            
-    Rio Tinto`s annual report and accounts;                                    
-    Rio Tinto`s presentations to analysts;                                     
-    Rio Tinto`s website;                                                       
-    Documents and statements issued by Rio Tinto in connection with its        
    acquisition of Alcan;                                                       
-    Analysts` research;                                                        
-    Other public information; and                                              
-    BHP Billiton`s knowledge of the industry and of Rio Tinto.                 
V    The Board of BHP Billiton has not had discussions with Rio Tinto`s w       
    management regarding the reasonableness of their assumptions supporting the 
    estimate of cost savings and revenue benefits. Therefore, there remains an  
inherent risk in this forward-looking estimate.                             
W    Due to the scale of a combined BHP Billiton and Rio Tinto organisation,    
    there may be additional changes to the combined group`s operations. In      
    addition, there are several material assumptions underlying the estimate,   
including the allocation of costs within Rio Tinto, the relative proportion 
    of volume sensitive costs for both BHP Billiton and Rio Tinto and the level 
    of costs necessary to operate effectively each combined function or         
    activity. A detailed sensitivity analysis was conducted to establish the    
robustness of the estimates to a number of changes in the assumptions in    
    addition to contingencies factored in by management. Because of these       
    factors and the fact that the changes relate to the future, the resulting   
    cost savings and revenue benefits may be materially greater or less than    
those estimated.                                                            
APPENDIX II                                                                     
Report on Estimated Cost Savings and Revenue Benefits                           
The following are the texts of letters from KPMG and from Goldman Sachs         
International relating to the BHP Billiton statement of estimated cost savings  
and revenue benefits set out in this document:                                  
A    from KPMG                                                                  
                                                           KPMG Audit Plc       
8 Salisbury Square   
                                                           London EC4Y 8BB      
United Kingdom                                                                  
The Directors                                                                   
BHP Billiton Limited               BHP Billiton Plc                             
180 Lonsdale Street                Neathouse Place                              
Melbourne  Vic  3000               London SW1V 1BH                              
Goldman Sachs International                                                     
Peterborough Court                                                              
133 Fleet Street                                                                
London EC4A 2BB                                                                 
12 November 2007                                                                
Dear Sirs                                                                       
BHP Billiton`s Proposal to Rio Tinto Limited and Rio Tinto plc                  
We refer to the statement made by the directors of BHP Billiton Limited and BHP 
Billiton Plc (`the Directors`) on page three of this document (`the Statement`) 
to the effect that:                                                             
"...BHP Billiton expects :                                                      
*    US$1.7 billion nominal per annum of cost savings in the third full year    
    following completion; achieved through removal of duplication as well as    
procurement and operating efficiency savings; and                           
*    Further EBITDA enhancement of US$2.0 billion nominal per annum in the      
    seventh full year following completion, driven primarily by the             
    acceleration of volumes to customers.                                       
In the seventh full year following completion this, therefore, gives a total    
incremental EBITDA of US$3.7 billion nominal per annum of quantified synergies. 
The total one-off implementation cash costs related to achieving these synergies
are expected to amount to US$0.65 billion over the first two full years         
following completion."                                                          
The Statement has been made in the context of the disclosures in notes (s) to   
(w) of Appendix I setting out, inter alia, the basis of the Directors` belief   
(including sources of information) supporting the Statement and their analysis  
and explanation of the underlying constituent elements.                         
This report is required by Note 8(b) to Rule 19.1 of the City Code on Takeovers 
and Mergers (`the City Code`) and is given for the purpose of complying with    
that requirement and for no other purpose.                                      
Responsibility                                                                  
The Statement is the responsibility solely of the Directors.  It is our         
responsibility and that of Goldman Sachs International to form respective       
opinions, as required by Note 8(b) to Rule 19.1 of the City Code as to whether  
the Statement has been made by the Directors with due care and consideration.   
Save for any responsibility which we may have to those persons to whom this     
report is expressly addressed, to the fullest extent permitted by law we do not 
assume any responsibility and will not accept any liability to any other person 
for any loss suffered by any such other person as a result of, arising out of,  
or in connection with this report.                                              
Basis of opinion                                                                
We have discussed the Statement, together with the underlying plans, with the   
Directors and with Goldman Sachs International.  We have also considered the    
letter dated 12 November 2007 from Goldman Sachs International to the Directors 
on the same matter.  We conducted our work in accordance with Standards for     
Investment Reporting issued by the Auditing Practices Board of the United       
Kingdom.                                                                        
We do not express any opinion as to the achievability of the benefits identified
by the Directors in the Statement.  The Statement is subject to uncertainty as  
described in this document.  Because of the significant changes in the enlarged 
group`s operations expected to flow from the merger and because the Statement   
relates to the future, the actual merger benefits achieved are likely to be     
different from those anticipated in the Statement and the differences may be    
material.                                                                       
Opinion                                                                         
On the basis of the foregoing, we report that in our opinion the Directors have 
made the Statement, in the form and context in which it is made, with due care  
and consideration.                                                              
Yours faithfully                                                                
KPMG Audit Plc                                                                  
B    from Goldman Sachs International                                           
                                                 Goldman Sachs International    
Peterborough Court             
                                                 133 Fleet Street               
                                                 London EC4A 2BB                
The Directors                                                                   
BHP Billiton Limited               BHP Billiton Plc                             
180 Lonsdale Street                Neathouse Place                              
Melbourne  Vic  3000               London SW1V 1BH                              
12 November 2007                                                                
Dear Sirs                                                                       
BHP BILLITON`S PROPOSAL TO RIO TINTO LIMITED AND RIO TINTO PLC ("RIO TINTO")    
We refer to the statement of estimated cost savings and revenue benefits, the   
bases of preparation thereof and the notes thereto (together the "Statement")   
made by BHP Billiton Limited and BHP Billiton Plc ("BHP Billiton") set out in   
this document, for which the Directors of BHP Billiton are solely responsible.  
We have discussed the Statement (including the assumptions and sources of       
information referred to therein), with the Directors of BHP Billiton and those  
officers and employees of BHP Billiton who developed the underlying plans.  The 
Statement is subject to uncertainty as described in this document and our work  
did not involve an independent examination of any of the financial or other     
information underlying the Statement.                                           
We have relied upon the accuracy and completeness of all the financial and other
information reviewed by us and have assumed such accuracy and completeness for  
the purposes of rendering this letter. We have also reviewed the work carried   
out by KPMG and have discussed with them the conclusions stated in their letter 
of 12 November 2007 addressed to yourselves and ourselves on this matter.       
We do not express any opinion as to the achievability of the cost savings and   
estimated revenue benefits identified by the Directors of BHP Billiton.         
This letter is provided pursuant to our engagement letter with BHP Billiton     
solely to the Directors of BHP Billiton in connection with Note 8 (b) of Rule   
19.1 of the City Code on Takeovers and Mergers and for no other purpose. We     
accept no responsibility to Rio Tinto or its shareholders or any other person   
other than the Directors of BHP Billiton in respect of the contents of, or any  
matter arising out of or in connection with, this letter.                       
On the basis of the foregoing, we consider that the Statement by BHP Billiton,  
for which the Directors of BHP Billiton are solely responsible, has been made   
with due care and consideration in the context in which it was made.            
Yours faithfully                                                                
Simon Dingemans                                                                 
Managing Director                                                               
For and on behalf of Goldman Sachs International                                
APPENDIX III                                                                    
Definitions                                                                     
"GBP"                                       United Kingdom pounds sterling;     
"A$"                                    Australian Dollars;                     
"Alcan"                                 Alcan, Inc;                             
"Australia"                             the Commonwealth of Australia, its      
                                       states, territories and possessions;     
"BHP Billiton"                          BHP Billiton Plc or BHP Billiton        
Limited, or both, or the BHP Billiton    
                                       group, as the context may require;       
"BHP Billiton Limited Ordinary Shares"ordinary shares in the share capital of   
                                       BHP Billiton Limited;                    
"BHP Billiton Plc Ordinary Shares"    ordinary shares of US$0.50 each in the    
                                       share capital of BHP Billiton Plc;       
"Board" or "Directors"                means the directors of Rio Tinto plc and  
                                       Rio Tinto Limited, or the directors of   
BHP Billiton Plc and BHP Billiton        
                                       Limited, or the directors of the         
                                       combined group, as the context may       
                                       require;                                 
"EBITDA"                                Earnings before Interest, Taxes,        
                                       Depreciation and Amortisation;           
"EBIT"                                  Earnings before Interest and Taxes;     
"Financial Services Authority"          the UK Financial Services Authority,    
which is an independent non-governmental 
                                       body given statutory powers by the       
                                       Financial Services and Markets Act 2000; 
"FY2007"                                the financial year ended 30 June 2007;  
"KPMG"                                 KPMG Audit Plc;                          
"Listing Rules"                         the listing rules of the UK Listing     
                                       Authority;                               
"Panel"                                 the UK Panel on Takeovers and Mergers;  
"Regulatory Pre-conditions"             the pre-conditions to the posting of the
                                       Rio Tinto plc scheme document and the    
                                       Rio Tinto Limited explanatory statement  
                                       and related documents;                   
"Rio Tinto ADSs"                      Rio Tinto plc`s American Depositary       
                                       Shares representing 4 Rio Tinto plc      
                                       shares per American Depositary Share and 
                                       listed on the New York Stock Exchange;   
"Rio Tinto"                             Rio Tinto plc or Rio Tinto Limited, or  
                                       both, or the Rio Tinto group, as the     
                                       context may require;                     
"SEC"                                   United States Securities and Exchange   
Commission;                              
"UK City Code"                          the UK City Code on Takeovers and       
                                       Mergers;                                 
"UK Listing Authority"                  the Financial Services Authority acting 
in its capacity as the competent         
                                       authority for the purposes of Part VI of 
                                       the Financial Services and Markets Act   
                                       2000;                                    
"United Kingdom"                        the United Kingdom of Great Britain and 
                                       Northern Ireland;                        
"US Securities Act"                     US Securities Act of 1933, as amended   
                                       from time to time; and                   
"US$"                                   United States dollars.                  
Date: 12/11/2007 08:33:01 Produced by the JSE SENS Department.                  
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