UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                               ------------------

                                    FORM 11-K

                               ------------------

                     Annual Report Pursuant to Section 15(d)
                     of the Securities Exchange Act of 1934


(Mark one)

[X]  ANNUAL report  pursuant to Section 15(d) of the Securities  Exchange Act of
     1934

     For the fiscal year ended December 31, 2004

                                       or

[_]  Transition report pursuant to Section 15(d) of the Securities Exchange Act

     For the transition period from _________ to ___________

Commission file number 001-10533


A. Full title of the plan and the address of the plan, if different from that of
the issuer named below:

             KENNECOTT CORPORATION SAVINGS PLAN FOR HOURLY EMPLOYEES

B. Name of issuer of the securities held pursuant to the Plan and the address of
its principal executive office:

         Rio Tinto plc, 6 St. James's Square, London, SW1Y 4LD, England


                                  Page 1 of 20



          KENNECOTT CORPORATION
          SAVINGS PLAN FOR HOURLY EMPLOYEES

          FINANCIAL STATEMENTS AND SUPPLEMENTAL SCHEDULE

          AS OF DECEMBER 31, 2004 AND 2003 AND FOR THE YEAR
          ENDED DECEMBER 31, 2004

          TOGETHER WITH REPORTS OF INDEPENDENT REGISTERED PUBLIC
          ACCOUNTING FIRMS

                                  Page 2 of 20





                                                           KENNECOTT CORPORATION
                                               SAVINGS PLAN FOR HOURLY EMPLOYEES
                                                               TABLE OF CONTENTS
--------------------------------------------------------------------------------


                                                                            PAGE
                                                                            ----

Report of Independent Registered Public Accounting Firm (Tanner LC)            4

Report of Independent Registered Public Accounting Firm
  (PricewaterhouseCoopers LLP)                                                 5

Financial Statements:

  Statements of Assets Available for Benefits as of
    December 31, 2004 and 2003                                                 6

  Statement of Changes in Assets Available for Benefits
    for the year ended December 31, 2004                                       7

  Notes to Financial Statements                                           8 - 14

Supplemental Schedule - Schedule H, Part IV, line 4i -
  Schedule of Assets (Held at End of Year) as of December 31, 2004       15 - 16


All other schedules required by Section 2520.103-10 of the Department of Labor's
Rules and Regulations for Reporting and Disclosure under the Employee Retirement
Income Security Act of 1974 have been omitted because they are not applicable to
the Kennecott Corporation Savings Plan for Hourly Employees.


                                 Page 3 of 20





                                                REPORT OF INDEPENDENT REGISTERED
                                                          PUBLIC ACCOUNTING FIRM



The Plan Administrator (Vice President Human Resources of
  Kennecott Utah Copper Corporation)
Kennecott Corporation Savings Plan for Hourly Employees


We have audited the  accompanying  statement of assets available for benefits of
the Kennecott  Corporation  Savings Plan for Hourly  Employees  (the Plan) as of
December 31, 2004 and the related  statement of changes in assets  available for
benefits  for  the  year  then  ended.   These  financial   statements  are  the
responsibility  of the Plan's  management.  Our  responsibility is to express an
opinion on these financial statements based on our audit.

We conducted  our audit in accordance  with the standards of the Public  Company
Accounting Oversight Board (United States). Those standards require that we plan
and perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement.  An audit includes examining, on a
test basis,  evidence  supporting  the amounts and  disclosures in the financial
statements.  An audit also includes assessing the accounting principles used and
significant  estimates  made by  management,  as well as evaluating  the overall
financial  statement  presentation.   We  believe  that  our  audit  provides  a
reasonable basis for our opinion.

In our opinion,  the financial  statements  referred to above present fairly, in
all  material  respects,  the assets  available  for  benefits of the  Kennecott
Corporation  Savings Plan for Hourly  Employees as of December 31, 2004, and the
changes in assets  available  for benefits for the year then ended in conformity
with U.S. generally accepted accounting principles.

Our audit of the financial  statements  was performed for the purpose of forming
an opinion on the basic financial  statements taken as a whole. The supplemental
Schedule of Assets  (Held at End of Year) as of December  31, 2004 is  presented
for the purpose of  additional  analysis and is not a required part of the basic
financial  statements,  but is supplementary  information required by the United
States  Department of Labor's Rules and Regulations for Reporting and Disclosure
under the Employee  Retirement  Income  Security Act of 1974.  The  supplemental
schedule has been subjected to the auditing  procedures  applied in the audit of
the basic  financial  statements  and, in our opinion,  is fairly  stated in all
material  respects  in  relation to the basic  financial  statements  taken as a
whole.

/s/ Tanner LC


Salt Lake City, Utah
February 22, 2006

                                  Page 4 of 20


            REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM


To the Participants and Administrator of
the Kennecott Corporation Savings Plan for Hourly Employees

In our opinion, the accompanying statement of assets available for benefits
presents fairly, in all material respects, the assets available for benefits
of the Kennecott Corporation Savings Plan for Hourly Employees (the "Plan") at
December 31, 2003, in conformity with accounting principles generally accepted
in the United States of America. This financial statement is the responsibility
of the Plan's management. Our responsibility is to express an opinion on this
financial statement based on our audit. We conducted our audit of this statement
in accordance with the standards of the Public Company Accounting Oversight
Board (United States). Those standards require that we plan and perform the
audit to obtain reasonable assurance about whether the financial statements
are free of material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements,
assessing the accounting principles used and significant estimates made by
management, and evaluating the overall financial statement presentation. We
believe that our audit provides a reasonable basis for our opinion.

/s/ PricewaterhouseCoopers LLP

PricewaterhouseCoopers LLP
Salt Lake City, Utah
September 23, 2005




                                  Page 5 of 20




                                                           KENNECOTT CORPORATION
                                               SAVINGS PLAN FOR HOURLY EMPLOYEES
                                     STATEMENTS OF ASSETS AVAILABLE FOR BENEFITS

                                                           DECEMBER 31,
--------------------------------------------------------------------------------


                                                     2004               2003
                                                 -------------------------------
     ASSETS
     ------

Investments (note 2)                             $ 44,832,506       $ 44,184,371
                                                 -------------------------------
Receivables:
  Employee contributions                               83,242             85,056
  Employer contributions                               25,203             25,771
                                                 -------------------------------

          Total receivables                           108,445            110,827
                                                 -------------------------------

Assets available for benefits                    $ 44,940,951       $ 44,295,198
                                                 ===============================

--------------------------------------------------------------------------------

See accompanying notes to financial statements.

                                  Page 6 of 20





                                                           KENNECOTT CORPORATION
                                               SAVINGS PLAN FOR HOURLY EMPLOYEES
                           STATEMENT OF CHANGES IN ASSETS AVAILABLE FOR BENEFITS

                                                    YEAR ENDED DECEMBER 31, 2004
--------------------------------------------------------------------------------


ADDITIONS TO ASSETS ATTRIBUTED TO:
  Contributions:
    Employee                                                        $  2,231,329
    Employer                                                             627,191
                                                                    ------------

          Total contributions                                          2,858,520
                                                                    ------------

  Investment income:
    Net appreciation in fair value of investments                      2,516,167
    Interest and dividends                                             1,035,586
                                                                    ------------

          Total investment income                                      3,551,753
                                                                    ------------

          Total additions                                              6,410,273
                                                                    ------------

DEDUCTIONS FROM ASSETS ATTRIBUTED TO:
  Benefits paid to participants                                        5,764,414
  Administrative expenses                                                    106
                                                                    ------------

          Total deductions                                             5,764,520
                                                                    ------------

Increase in assets available for benefits                                645,753

ASSETS AVAILABLE FOR BENEFITS:
  Beginning of year                                                   44,295,198
                                                                    ------------

  End of year                                                       $ 44,940,951
                                                                    ============



--------------------------------------------------------------------------------

See accompanying notes to financial statements.

                                  Page 7 of 20





                                                           KENNECOTT CORPORATION
                                               SAVINGS PLAN FOR HOURLY EMPLOYEES
                                                   NOTES TO FINANCIAL STATEMENTS

--------------------------------------------------------------------------------



1.   DESCRIPTION OF        The  following  brief  description  of the  Kennecott
     THE PLAN              Corporation  Savings Plan for Hourly  Employees  (the
                           Plan) is provided  for general  information  purposes
                           only.  Participants should refer to the plan document
                           and  summary  plan   description  for  more  complete
                           information.

                           GENERAL
                           The Plan is a defined  contribution plan covering all
                           full-time  hourly employees who are represented by or
                           included in a collective bargaining unit of Kennecott
                           Utah   Copper    Corporation   and   its   affiliates
                           (collectively,  the Company),  as defined in the Plan
                           document.  Eligible  employees can participate in the
                           Plan  immediately  after  completing  three months of
                           continuous service. Kennecott Utah Copper Corporation
                           is an indirect  wholly owned  subsidiary of Rio Tinto
                           America  Inc.,  which  is an  indirect  wholly  owned
                           subsidiary of Rio Tinto plc (the Parent). The Plan is
                           intended to be a qualified  retirement plan under the
                           Internal  Revenue  Code  (IRC) and is  subject to the
                           provisions of the Employee Retirement Income Security
                           Act of 1974 (ERISA), as amended.

                           CONTRIBUTIONS
                           Each  year,  participants  may  elect  under a salary
                           reduction  agreement  to  contribute  to the  Plan an
                           amount  not  less  than 1% and not  more  than 19% of
                           their  eligible  compensation  on a before-tax  basis
                           through payroll deductions. Contributions are limited
                           by the IRC, which established a maximum  contribution
                           of $13,000 ($16,000 for participants over age 50) for
                           the  year  ended   December  31,  2004.   Participant
                           contributions are recorded in the period during which
                           the amounts are withheld from  participant  earnings.
                           Participants may also contribute amounts representing
                           distributions from other qualified defined benefit or
                           defined contribution plans.

                           The Company matches the  participant's  contributions
                           to the  Plan  at 50%,  up to the  first  6% of  their
                           eligible  compensation.  Matching  contributions  are
                           recorded   on  the  date  the   related   participant
                           contributions are withheld.

--------------------------------------------------------------------------------

                                  Page 8 of 20





                                                           KENNECOTT CORPORATION
                                               SAVINGS PLAN FOR HOURLY EMPLOYEES
                                                   NOTES TO FINANCIAL STATEMENTS
                                                                       CONTINUED

--------------------------------------------------------------------------------

1.   DESCRIPTION OF        PARTICIPANT ACCOUNTS
     THE PLAN              Individual  accounts  are  maintained  for each  Plan
     CONTINUED             participant.  Each participant's  account is credited
                           with the participant's  contributions,  the Company's
                           matching  contribution,  and  an  allocation  of  the
                           Plan's earnings,  and is charged with withdrawals and
                           an allocation of the Plan's losses and administrative
                           expenses.   Allocations   are  based  on  participant
                           earnings or account balances, as defined. The benefit
                           to which a  participant  is  entitled  is the benefit
                           that can be provided  from the  participant's  vested
                           account.

                           PARTICIPANT-DIRECTED OPTIONS FOR INVESTMENTS
                           Participants   direct   the   investment   of   their
                           contributions and the Company matching  contributions
                           into various  investment options offered by the Plan.
                           Investment  options  include  a  money  market  fund,
                           common  collective  trusts,  mutual funds,  synthetic
                           guaranteed  investment  contracts and common stock of
                           the  Parent  in  the  form  of  American   Depository
                           Receipts (ADRs).

                           VESTING
                           Participants   are   immediately   vested   in  their
                           contributions  plus actual earnings thereon.  Vesting
                           in  the  Company's   contribution  portion  of  their
                           accounts is based on years of continuous  service.  A
                           participant is 100% cliff vested after three years of
                           credited service.

                           PAYMENT OF BENEFITS
                           On termination  of service due to death,  disability,
                           or retirement,  participants  or their  beneficiaries
                           may elect to  receive a lump-sum  distribution  in an
                           amount equal to the value of the participants' vested
                           interests   in   their   accounts.    Under   certain
                           circumstances,   participants   may  withdraw   their
                           contributions   prior  to  the  occurrence  of  these
                           events.

                           FORFEITED ACCOUNTS
                           Forfeited non-vested participant account balances may
                           be used to reduce future Company contributions to the
                           Plan.  Forfeitures utilized for these purposes during
                           the year ended  December  31, 2004  totaled  $43,082.
                           Forfeitures  were $14,970 for the year ended December
                           31,  2004.  As of  December  31,  2004 and 2003,  the
                           balance of the  forfeiture  account  was  $13,828 and
                           $41,940, respectively.

--------------------------------------------------------------------------------

                                  Page 9 of 20




                                                           KENNECOTT CORPORATION
                                               SAVINGS PLAN FOR HOURLY EMPLOYEES
                                                   NOTES TO FINANCIAL STATEMENTS
                                                                       CONTINUED

--------------------------------------------------------------------------------


2.   SUMMARY OF            BASIS OF PRESENTATION
     SIGNIFICANT           The  financial  statements  of  the  Plan  have  been
     ACCOUNTING            prepared on the accrual basis of accounting.
     POLICIES
                           USE OF ESTIMATES
                           The preparation of the Plan's financial statements in
                           conformity with U.S.  generally  accepted  accounting
                           principles requires Plan management to make estimates
                           and assumptions  that affect the reported  amounts of
                           assets  available  for  benefits  at the  date of the
                           financial statements, the changes in assets available
                           for benefit  during the  reporting  period and,  when
                           applicable,  the disclosures of contingent assets and
                           liabilities at the date of the financial  statements.
                           Actual results could differ from those estimates.

                           RISKS AND UNCERTAINTIES
                           The Plan provides for  investments in securities that
                           are exposed to various risks,  such as interest rate,
                           currency  exchange  rate,  credit and overall  market
                           fluctuation. Due to the level of risk associated with
                           certain  investment  securities,   it  is  reasonably
                           possible  that  changes in the  values of  investment
                           securities  will occur in the near term and that such
                           changes could materially affect participants' account
                           balances and the amounts  reported in the  statements
                           of assets available for benefits.

                           INVESTMENT VALUATION AND INCOME RECOGNITION
                           The  Plan's  investments  are  stated  at fair  value
                           (generally   quoted  market  price)  except  for  its
                           benefit-responsive  guaranteed  investment contracts,
                           which are  valued  at  contract  value  (see Note 6).
                           Shares of mutual  funds are  valued at quoted  market
                           prices, which represent the net asset value of shares
                           held by the Plan at year end.

                           Purchases and sales of  securities  are recorded on a
                           trade-date  basis.  Interest income is recorded on an
                           accrual   basis.   Dividends   are  recorded  on  the
                           ex-dividend date.

                           The net appreciation (depreciation) in the fair value
                           of investments which includes realized gains (losses)
                           and unrealized  appreciation  (depreciation) on those
                           investments  is shown in the  statement of changes in
                           assets available for benefits of the Plan.

--------------------------------------------------------------------------------

                                  Page 10 of 20




                                                           KENNECOTT CORPORATION
                                               SAVINGS PLAN FOR HOURLY EMPLOYEES
                                                   NOTES TO FINANCIAL STATEMENTS
                                                                       CONTINUED

--------------------------------------------------------------------------------


2.   SUMMARY OF            PAYMENTS OF BENEFITS
     SIGNIFICANT           Benefits payments are recorded when paid by the Plan.
     ACCOUNTING
     POLICIES              ADMINISTRATIVE EXPENSES
     CONTINUED             The  Company  pays  the  majority  of the  costs  and
                           expenses incurred in administering the Plan.

                           The Plan has several  fund  managers  that manage the
                           investments  held  by  the  Plan.  During  2004,  the
                           Company paid all investment  management  fees related
                           to these fund managers.

                           The investment management fees related to transaction
                           costs  associated  with the  purchase  or sale of Rio
                           Tinto plc ADRs are paid by the participants.

                           PARTICIPANT LOANS
                           Loans are not permitted to be made to participants in
                           the Plan.

3.   PARTIES-IN-           Certain  Plan   investments  are  managed  by  Putnam
     INTEREST              Investments,   the  Plan  trustee,  therefore,  these
     TRANSACTIONS          transactions     are     exempt     party-in-interest
                           transactions.  Fees  paid by the Plan for  investment
                           management  services  were included as a reduction of
                           the return earned on each fund.

                           Transactions  associated  with Rio Tinto plc ADRs are
                           considered  exempt   party-in-interest   transactions
                           because  Rio Tinto plc is the parent of the  Company.
                           As of  December  31,  2004 and  2003,  the Plan  held
                           30,627.477 and 33,554.390  shares,  respectively,  of
                           common  stock of Rio Tinto plc,  with a cost basis of
                           $2,144,056 and $2,215,912,  respectively.  During the
                           year  ended  December  31,  2004,  the Plan  recorded
                           dividend income of $85,054.

--------------------------------------------------------------------------------

                                 Page 11 of 20




                                                           KENNECOTT CORPORATION
                                               SAVINGS PLAN FOR HOURLY EMPLOYEES
                                                   NOTES TO FINANCIAL STATEMENTS
                                                                       CONTINUED

--------------------------------------------------------------------------------


4.   INVESTMENTS           The Plan's  investments that represented five percent
                           or more of the Plan's  assets  available for benefits
                           as of December 31, 2004 and 2003 are as follows:

                                                            2004         2003
                                                        ------------------------

                           SEI Stable Asset Fund        $ 3,726,143  $ 4,697,103
                           Putnam S&P 500 Index Fund      3,606,189    3,558,411
                           Putnam International Equity
                             Fund                         2,623,143    2,429,618
                           Putnam Fund for Growth
                             and Income                   5,379,788    5,228,096
                           Putnam New Opportunities Fund  4,661,883    5,022,937
                           Putnam Voyager Fund            2,568,125    2,664,377
                           Monumental Life Insurance
                             Company GIC                  2,819,519    2,686,978
                           State Street Bank Synthetic
                             GIC                          4,920,475    4,731,914
                           Rio Tinto plc ADRs             3,651,102    3,734,939

                           During the year ended  December 31, 2004,  the Plan's
                           investments    (including   gains   and   losses   on
                           investments  bought and sold,  as well as held during
                           the year) appreciated in value as follows:

                             Mutual funds                            $ 1,951,298
                             Common stock                                214,599
                             Common collective trusts                    350,270
                                                                     -----------

                           Net appreciation in investments           $ 2,516,167
                                                                     ===========

--------------------------------------------------------------------------------

                                 Page 12 of 20




                                                           KENNECOTT CORPORATION
                                               SAVINGS PLAN FOR HOURLY EMPLOYEES
                                                   NOTES TO FINANCIAL STATEMENTS
                                                                       CONTINUED

--------------------------------------------------------------------------------


5.   PLAN                  The  terms of the Plan may be  amended,  modified  or
     TERMINATION           discontinued  after the effective date of the Savings
                           Plan  Agreement.  Such  amendment,   modification  or
                           discontinuance may occur pursuant to negotiations for
                           employees at Kennecott  Utah Copper  Corporation  who
                           are represented by the labor  organizations  that are
                           jointly  referred to as the Union,  or as required by
                           law, or to gain Internal Revenue Service approval. No
                           change,  however, shall make it possible for any part
                           of the  funds of the Plan to be used for or  diverted
                           for purposes other than for the exclusive  benefit of
                           participants and/or their beneficiaries. In addition,
                           no change  shall  adversely  affect the rights of any
                           participant with respect to contributions  made prior
                           to the date of the change.

                           If the  Plan is  terminated  in  accordance  with the
                           terms  described  in the  preceding  paragraph,  each
                           participant's  account  shall become fully vested and
                           nonforfeitable  and distribution of Plan assets shall
                           be made as directed by the Plan Administrator.

6.   GUARANTEED            The Plan's guaranteed  investment  contracts are in a
     INVESTMENT            stable   value  fund.   The   guaranteed   investment
     CONTRACTS             contracts are fully benefit responsive and are stated
                           at contract  value  (which  represents  contributions
                           made under the contract,  plus interest earned,  less
                           withdrawals and administrative  expenses). The stable
                           value fund is  invested  in a money  market  fund,  a
                           common/collective  trust (the SEI Stable Asset Fund),
                           and synthetic guaranteed investment contracts (GICs).
                           The synthetic  GICs are secured by  underlying  fixed
                           income assets.  The average crediting  interest rates
                           on the investment  contracts were 4.54% and 4.53% for
                           the  years   ended   December   31,  2004  and  2003,
                           respectively.  Average  duration  for all  investment
                           contracts  was 2.96 years and 3.01 years at  December
                           31, 2004 and 2003,  respectively.  The average  yield
                           was 4.70% and 4.63% for the years ended  December 31,
                           2004 and 2003,  respectively.  There are no  reserves
                           against  the  contract  value for credit  risk of the
                           contracted issuer or otherwise.

--------------------------------------------------------------------------------

                                 Page 13 of 20




                                                           KENNECOTT CORPORATION
                                               SAVINGS PLAN FOR HOURLY EMPLOYEES
                                                   NOTES TO FINANCIAL STATEMENTS
                                                                       CONTINUED

--------------------------------------------------------------------------------


6.   GUARANTEED            The contract or crediting  interest rates for certain
     INVESTMENT            stable value investment contracts are reset quarterly
     CONTRACTS             and are based on the market value of the portfolio of
     CONTINUED             assets  underlying  these  contracts.  Inputs used to
                           determine the crediting  interest  rates include each
                           contract's    portfolio    market   value,    current
                           yield-to-date  maturity,  duration  and market  value
                           relative to contract value.  With respect to interest
                           rate resets,  all contracts are  guaranteed  that the
                           rates will not be negative.

                           A synthetic  GIC provides for a guaranteed  return on
                           principal  over a  specified  period of time  through
                           fully benefit-responsive wrap contracts,  issued by a
                           third  party which are backed by  underlying  assets.
                           The portfolio of assets underlying the synthetic GICs
                           has  an  overall  AAA  credit  quality  and  includes
                           mortgages,  fixed income securities and United States
                           treasury  notes  and  bonds.   These  wrap  contracts
                           provide benefit withdrawals and investment  exchanges
                           at the full contract value of the synthetic contracts
                           (principal plus accrued interest) notwithstanding the
                           actual  market  value of the  underlying  investments
                           (fair value plus accrued interest).

                           Wrap  contracts are designed to smooth out the impact
                           of normal  market  fluctuations  associated  with the
                           performance of the underlying  investments.  The fair
                           value  of the  synthetic  GICs  was  $11,519,614  and
                           $11,147,794   as  of  December  31,  2004  and  2003,
                           respectively.  The  contract  value of the  synthetic
                           GICs  included  $287,377  and $427,914 as of December
                           31, 2004 and 2003, respectively,  attributable to the
                           wrap contract  providers  representing the amounts by
                           which  the  value of the  contracts  is less than the
                           value of the underlying assets.

7.   INCOME TAX            The  Internal  Revenue  Service  has  determined  and
     STATUS                informed  the Company by a letter  dated  December 9,
                           2002,  that the Plan and related  trust were designed
                           in accordance with the applicable requirements of the
                           Internal  Revenue  Code.  The Plan  has been  amended
                           since receiving the  determination  letter;  however,
                           the Plan  Administrator  and the Plan's legal counsel
                           believe that the Plan is currently designed and being
                           operated   in   compliance    with   the   applicable
                           requirements of the Internal Revenue Code. Therefore,
                           no provision  for income  taxes has been  included in
                           the Plan's financial statements.

--------------------------------------------------------------------------------

                                 Page 14 of 20





                                                                                                              KENNECOTT CORPORATION
                                                                                                  SAVINGS PLAN FOR HOURLY EMPLOYEES
                                                                                        EMPLOYER IDENTIFICATION NUMBER:  13-3108078
                                                                                                                  PLAN NUMBER:  204
                                                                                                       SCHEDULE H, PART IV, LINE 4i
                                                                                           SCHEDULE OF ASSETS (HELD AT END OF YEAR)

                                                                                                                  DECEMBER 31, 2004
-----------------------------------------------------------------------------------------------------------------------------------


  (a)                  (b)                                (c)                                         (d)             (e)
PARTY IN                                                                               NUMBER OF                    CURRENT
INTEREST       IDENTITY OF ISSUE                DESCRIPTION OF INVESTMENT                UNITS        COST           VALUE
----------   ---------------------    ----------------------------------------------  -----------   --------   -------------------
                                                                                                
                                      MONEY MARKET FUND:
             Mellon Bank              Mellon Bank - STIF Account                           94,931      **        $     94,931
                                                                                                                 --------------

                                      COMMON COLLECTIVE TRUSTS:
             SEI Investments          SEI Stable Asset Fund                                            **           3,726,143
   *         Putnam                   Putnam S&P 500 Index Fund                           117,351      **           3,606,189
                                                                                                                 --------------
                                                Total Common Collective Trusts                                      7,332,332
                                                                                                                 --------------

                                      MUTUAL FUNDS:
             Managers                 Managers Special Equity Fund                         10,221      **             924,083
             Dreyfus                  Dreyfus Mid-Cap Value Fund                           39,345      **           1,276,758
             PIMCO                    PIMCO Total Return Fund                             149,301      **           1,593,044
             Morgan Stanley           MSDW Institutional International Equity Fund         17,803      **             373,691
             Dodge and Cox            Dodge and Cox Stock Fund                              6,932      **             902,716
             UAM Trust Company        UAM/ICM Small Company Fund                           18,910      **             694,001
   *         Putnam                   Putnam Asset Allocation:  Growth Fund                30,765      **             343,952
   *         Putnam                   Putnam Asset Allocation:  Balanced Fund              37,733      **             400,723
   *         Putnam                   Putnam Asset Allocation:  Conservative Fund          26,969      **             246,493
   *         Putnam                   Putnam International Equity Fund                    110,170      **           2,623,143
   *         Putnam                   Putnam Investors Fund                                41,876      **             533,504
   *         Putnam                   Putnam Fund for Growth and Income                   276,738      **           5,379,788
   *         Putnam                   Putnam New Opportunities Fund                       108,846      **           4,661,883
   *         Putnam                   Putnam Voyager Fund                                 149,832      **           2,568,125
                                                                                                                 --------------
                                                Total Mutual Funds                                                 22,521,904
                                                                                                                 --------------

*  denotes a party-in-interest as defined by ERISA
** not required as investments are participant directed


--------------------------------------------------------------------------------

See report of independent registered public accounting firm.

                                 Page 15 of 20





                                                                                                              KENNECOTT CORPORATION
                                                                                                  SAVINGS PLAN FOR HOURLY EMPLOYEES
                                                                                        EMPLOYER IDENTIFICATION NUMBER:  13-3108078
                                                                                                                  PLAN NUMBER:  204
                                                                                                       SCHEDULE H, PART IV, LINE 4i
                                                                                           SCHEDULE OF ASSETS (HELD AT END OF YEAR)
                                                                                                                          CONTINUED
                                                                                                                  DECEMBER 31, 2004
-----------------------------------------------------------------------------------------------------------------------------------


  (a)                  (b)                                (c)                                         (d)             (e)
PARTY IN                                                                               NUMBER OF                    CURRENT
INTEREST       IDENTITY OF ISSUE                DESCRIPTION OF INVESTMENT                UNITS        COST           VALUE
----------   ---------------------    ----------------------------------------------  -----------   --------   -------------------
                                                                                                
                                      SYNTHETIC GUARANTEED INVESTMENT CONTRACTS:
             Monumental Life          Synthetic GIC, Dwight Managed Target 2,
               Insurance Company        no specified maturity date, 5.15%                              **           2,049,186
             Monumental Life          Synthetic GIC, Dwight Managed Target 5,
               Insurance Company        no specified maturity date, 5.15%                              **             853,315
             Monumental Life
               Insurance Company      Wrap Contract                                                    **             (82,982)
                                                                                                                 --------------
                                                                                                                    2,819,519
                                                                                                                 --------------

             Transamerica Occidental  Synthetic GIC, Dwight Managed Target 5,                          **           1,869,703
               Life Insurance Co.       no specified maturity date, 5.54%
             Transamerica Occidental
               Life Insurance Co.     Wrap Contract                                                    **            (103,871)
                                                                                                                 --------------
                                                                                                                    1,765,832
                                                                                                                 --------------

             State Street Bank        Synthetic GIC, Dwight Core Int Fund, no
                                        specified maturity date, 6.07%                                 **           1,801,009
             State Street Bank        Wrap Contract                                                    **             (74,598)
                                                                                                                 --------------
                                                                                                                    1,726,411
                                                                                                                 --------------

             State Street Bank        Synthetic GIC, Dwight Managed Target 2,
                                        no specified maturity date, 3.98%                              **           4,383,904
             State Street Bank        Synthetic GIC, Dwight Managed Target 5,
                                        no specified maturity date, 3.98%                              **             562,497
             State Street Bank        Wrap Contract                                                    **             (25,926)
                                                                                                                 --------------
                                                                                                                    4,920,475
                                                                                                                 --------------

                                         Total Synthetic Guaranteed Investment Contracts                           11,232,237
                                                                                                                 --------------

                                      COMMON STOCK:
   *         Rio Tinto plc ADRs       Common Stock                                         30,627      **           3,651,102
                                                                                                                 --------------

                                                  Total Investments                                              $ 44,832,506
                                                                                                                 ==============

*  denotes a party-in-interest as defined by ERISA
** not required as investments are participant directed


--------------------------------------------------------------------------------

See report of independent registered public accounting firm.

                                 Page 16 of 20


                                    SIGNATURE

         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
the trustees (or other persons who  administer  the employee  benefit plan) have
duly  caused this  annual  report to be signed on its behalf by the  undersigned
hereunto duly authorized.


                                    KENNECOTT CORPORATION SAVINGS PLAN FOR
                                    HOURLY EMPLOYEES



                                    By: /s/ Robert S. Light
                                       -----------------------------------------
                                       Name:   Robert S. Light
                                       Title:  Chief Financial Officer
                                               Kennecott Utah Copper Corporation


Date: April 25, 2006



                                 Page 17 of 20





Exhibit        Description
-------        -----------

23.1           Consent of Tanner LC

23.2           Consent of PricewaterhouseCoopers LLP




                                 Page 18 of 20