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EXHIBIT NO. 10.8.4.:  ALCAN SUPPLEMENTAL RETIREMENT BENEFIT PLAN

              ALCAN SUPPLEMENTAL RETIREMENT BENEFIT PLAN (CANADA)

                          SCHEDULE OF AMENDMENTS 99-1

As of 1 May 1999, the Alcan Supplemental Retirement Benefit Plan (Canada) is
amended by adding the following subsection after subsection 15.05

15.06     PENSION AUGMENTATION AT 1 MAY 1999

          15.06.1   The retirement pension, the deferred retirement pension and
                    the Disability Pension of a Member who has retired,
                    terminated his employment or became disabled as the case may
                    be, before 2 October 1998, including the pension payable
                    under any attached elected pension payment guarantee, either
                    contingent or in payment, and the pension, either deferred
                    or in payment, to a surviving spouse, shall be augmented on
                    1 May 1999.

          15.06.2   For the purposes of this subsection 15.06 only, the
                    following  expressions  shall have the meanings set out
                    below:

                    "Commencement Date" means in the case of a Member, the
                    earliest of such Member's retirement date, the date he
                    became disabled and the date of termination of service and,
                    in the case of a pre-retirement surviving spouse's pension,
                    the first of the month following the Member's date of death.

                    "Monthly Pension Amount" means the monthly equivalent of the
                    pension referred to in paragraph 15.06.1.

          15.06.3   The augmentation factors are the following:

                    "Canadian Augmentation Factor" equals

                    (A)       in respect of a Member  whose  Commencement  Date
                              falls after 1 April 1998 but before  2 October
                              1998, 0.5%;

                    (B)       in respect of a Member whose  Commencement  Date
                              falls after 1 September 1997 but before 2 April
                              1998, the lesser of

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                              (i)       0.6% plus the amount obtained when 0.1%
                                        is multiplied by the number of complete
                                        months that the Commencement Date
                                        precedes 1 April 1998

                              and

                              (ii)  1.0%;

                    (C)       in  respect  of a Member  whose  Commencement Date
                              falls  after 1  September  1996 but  before 2
                              September 1997, the lesser of

                              (i)       1.0% plus the amount obtained when 0.1%
                                        is multiplied by the number of complete
                                        months that the Commencement Date
                                        precedes 1 October 1997

                              and

                              (ii)  2.0%;

                    (D)       in respect of a Member whose Commencement Date
                              falls before 2 September 1996, 1.0%;

                    "American Augmentation Factor" equals

                    (A)       in  respect  of a Member  whose  Commencement
                              Date  falls  after 1  September  1996 but  before
                              2 October 1998, 1.7%;

                    (B)       in respect of a Member whose Commencement Date
                              falls before 2 September 1996, 1.4%;

                    "British Augmentation Factor" equals

                    (A)       in  respect  of a Member  whose  Commencement Date
                              falls  after 1  September  1996 but  before 2
                              October 1998, 5.0%;

                    (B)       in respect of a Member whose Commencement Date
                              falls before 2 September 1996, 3.6%;

                    "Swiss Augmentation Factor" equals nil.

                    "German Augmentation Factor" equals

                    (A)       in respect of a Member whose Commencement Date
                              falls before 2 October 1998, 1.0%;

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                    "French Augmentation Factor" equals

                    (A)       in respect of a Member whose Commencement Date
                              falls before 2 October 1998, 0.8%;

                    "Japanese Augmentation Factor" equals

                    (A)       in respect of a Member whose Commencement Date
                              falls before 2 October 1998, 1.1%;

          15.06.4   Other than as provided for in paragraph 15.06.5, the monthly
                    amount of the augmentation on the date of calculation is
                    equal to the amount obtained when the Canadian Augmentation
                    Factor is applied to the Monthly Pension Amount.

          15.06.5   If the Monthly Pension Amount is paid in a currency other
                    than in Canadian dollars at a fixed rate of exchange, the
                    monthly amount of the augmentation is equal to:

                    (A)       in respect of a Monthly Pension Amount paid in
                              United States Dollars, the amount obtained when
                              the American Augmentation Factor is applied to the
                              Monthly Pension Amount;

                    (B)       in respect of a Monthly Pension Amount paid in
                              Pounds Sterling, the amount obtained when the
                              British Augmentation Factor is applied to the
                              Monthly Pension Amount;

                    (C)       in respect of a Member's Monthly Pension Amount
                              paid in Swiss Francs, the amount obtained when the
                              Swiss Augmentation Factor is applied to the
                              Monthly Pension Amount;

                    (D)       in respect of a Member's Monthly Pension Amount
                              paid in German Marks, the amount obtained when the
                              German Augmentation Factor is applied to the
                              Monthly Pension Amount;

                    (E)       in respect of a Member's Monthly Pension Amount
                              paid in French Francs, the amount obtained when
                              the French Augmentation Factor is applied to the
                              Monthly Pension Amount.

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                    (F)       in respect of a Member's Monthly Pension Amount
                              paid in Japanese Yen, the amount obtained when the
                              Japanese Augmentation Factor is applied to the
                              Monthly Pension Amount.

           15.06.6  The retirement pension of a Member, who retires on or after
                    1 May 1999 and who immediately prior to such retirement was
                    in receipt of an Approved Disability Benefit, shall be
                    augmented from his retirement date by the same augmentation
                    percentage that would otherwise have applied to his
                    retirement pension had his date of disability been his
                    Commencement Date for the purpose of calculating such
                    augmentation.

           15.06.7  The compounded augmentation factor under this and any
                    previous pension augmentation, shall, unless it is an
                    integral number of tenths of 1%, be rounded to the next
                    higher multiple of 0.1%.

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              ALCAN SUPPLEMENTAL RETIREMENT BENEFIT PLAN (CANADA)

                          SCHEDULE OF AMENDMENTS 00-1

1.       As of 1 January 2000, the Alcan Supplemental Retirement Benefit Plan
         (Canada) is amended by replacing subsection 2.04 by the following:

         2.04     "Administrator" means Alcan Adminco (2000) Inc.

2.       As of 1 October 2000, the Alcan Supplemental Retirement Benefit Plan
         (Canada) is amended by adding the following subsection after subsection
         15.06.

         15.07       PENSION AUGMENTATION AT 1 OCTOBER 2000

         15.07.1     The retirement pension and the deferred retirement pension
                     of a Member who has retired, terminated his employment or
                     became disabled as the case may be, before 2 April 2000,
                     including the pension payable under any attached elected
                     pension payment guarantee, either contingent or in payment,
                     and the pension, either deferred or in payment, to a
                     surviving spouse, shall be augmented on 1 October 2000.

         15.07.2     For the purposes of this subsection 15.07 only, the
                     following expressions shall have the meanings set out
                     below:

                     "Commencement Date" means the earliest of a Member's
                     Retirement Date, date the Disability Pension commenced and
                     date of termination

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                   of employment. In the case of a pre-retirement surviving
                   spouse's pension, Commencement Date means the first of the
                   month following the Member's date of death.

                   "Monthly Pension Amount" means the monthly equivalent of the
                   pension referred to in paragraph 15.07.1.

                   "APP Adjusted Monthly Pension Amount" means the amount
                   determined under paragraph 19.7.2 of the Plan as the Adjusted
                   Monthly Pension Amount.

         15.07.3   The augmentation factors are the following:

                   "Canadian Augmentation Factor (I)" expressed in percent (%)
                   equals

                   (A)       in respect of a Member whose Commencement Date
                             falls after 1 April 1999 but before 2 April 2000,
                             1.0% plus the amount obtained when 0.1% is
                             multiplied by the number of complete months that
                             the Commencement Date precedes 1 April 2000;

                   (B)       in respect of a Member whose Commencement Date
                             falls after 1 October 1998 but before 2 April 1999,
                             2.2% plus the amount obtained when 0.1% is
                             multiplied by the number of complete months that
                             the Commencement Date precedes 1 April 1999;

                   (C)       in respect of a Member whose Commencement Date
                             falls before 2 October 1998, 2.2%.

                   "Canadian Augmentation Factor (II)" expressed in percent (%)
                   equals

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                   (A)       in respect of a Member whose Commencement Date
                             falls after 1 April 1999 but before 2 April 2000,
                             0.8% plus the amount obtained when 0.05% is
                             multiplied by the number of complete months that
                             the Commencement date precedes 1 April 2000;

                   (B)       in respect of a Member whose Commencement Date
                             falls after 1 October 1998 but before 2 April 1999,
                             1.4% plus the amount obtained when 0.1% is
                             multiplied by the number of complete months that
                             the Commencement Date precedes 1 April 1999;

                   (C)       in respect of a Member whose Commencement Date
                             falls before 2 October 1998, 1.4%.

                   "Adjusted Canadian Augmentation Factor" expressed in percent
                   (%) equals

                   Canadian Augmentation Factor (I) x A
                                  plus

                   Canadian Augmentation Factor (II) x B
                                  minus

                                 100% x C
                     ---------------------------------
                           Monthly Pension Amount

                   where A equals the lesser of

                   (i)       the sum of the Monthly Pension Amount and the APP
                             Adjusted Monthly Pension Amount

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                    and

                    (ii)     $9,333.33,

                    where B equals the amount, if any, that the sum of the
                    Monthly Pension Amount and the APP Adjusted Monthly Pension
                    Amount exceeds $9,333.33,

                    where C equals the monthly amount of the augmentation
                    determined under paragraph 19.7.4 of the Plan.

                    "American Augmentation Factor" expressed in percent (%)
                    equals, in respect of a Member whose Commencement Date falls
                    before 2 April 2000, 2.8%.

                    "Adjusted American Augmentation Factor" expressed in percent
                    (%) equals

                    American Augmentation Factor x A + 1.5% x B - 100.0% x C
                    --------------------------------------------------------
                                      Monthly Pension Amount

                    where A equals the lesser of

                    (i)       the sum of the Monthly Pension Amount and the APP
                              Adjusted Monthly Pension Amount

                    and

                    (ii)      US $6,166.67,

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                   where B equals the amount, if any, that the sum of the
                   Monthly Pension Amount and the APP Adjusted Monthly Pension
                   Amount exceeds US $6,166.67, and

                   where C equals the monthly amount of the augmentation
                   determined under paragraph 19.7.5(A) of the Plan.

                   "British Augmentation Factor" expressed in percent (%)
                   equals, in respect of a Member whose Commencement Date falls
                   before 2 April 2000, 2.0%.

                   "Adjusted British Augmentation Factor" expressed in percent
                   (%) equals

                   British Augmentation Factor x A + 0.3% x B - 100.0% x C
                   -------------------------------------------------------
                                    Monthly Pension Amount

                   where A equals the lesser of

                   (i)       the sum of the Monthly Pension Amount and the APP
                             Adjusted Monthly Pension Amount

                   and

                   (ii)      (pound)4,250.00,

                   where B equals the amount, if any, that the sum of the
                   Monthly Pension Amount and the APP Adjusted Monthly Pension
                   Amount exceeds (pound) 4,250.00, and

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                   where C equals the monthly amount of the augmentation
                   determined under paragraph 19.7.5(B) of the Plan.

                   "Swiss Augmentation Factor" expressed in percent (%) equals,
                   in respect of a Member whose Commencement Date falls before 2
                   April 2000, 1.2%.

                   "Adjusted Swiss Augmentation Factor" expressed in percent (%)
                   equals

                   Swiss Augmentation Factor x A + 0,8% x B - 100.0% x C
                   -----------------------------------------------------
                                    Monthly Pension Amount

                   where A equals the lesser of

                   (i)       the sum of the Monthly Pension Amount and the APP
                             Adjusted Monthly Pension Amount

                   and

                   (ii)      SF 10,666.67,

                   where B equals the amount, if any, that the sum of the
                   Monthly Pension Amount and the APP Adjusted Monthly Pension
                   Amount exceeds SF 10,666.67, and

                   where C equals the monthly amount of the augmentation
                   determined under paragraph 19.7.5(C) of the Plan.

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                  "German Augmentation Factor" expressed in percent (%) equals,
                  in respect of a Member whose Commencement date falls before 2
                  April 2000, 1.0%.

                  "Adjusted German Augmentation Factor" expressed in percent (%)
                  equals

                  German Augmentation Factor x A   +   0.5% x B   -   100.0% x C
                  --------------------------------------------------------------
                                       Monthly Pension Amount

                  where A equals the lesser of

                  (i)      the sum of the Monthly Pension Amount and the APP
                           Adjusted Monthly Pension Amount

                  and

                  (ii)     DM 13,333.33,

                  where B equals the amount, if any, that the sum of the Monthly
                  Pension Amount and the APP Adjusted Monthly Pension Amount
                  exceeds DM 13,333.33, and

                  where C equals the monthly amount of the augmentation
                  determined under paragraph 19.7.5(D) of the Plan.

                  "French Augmentation Factor" expressed in percent (%) equals,
                  in respect of a Member whose Commencement Date falls before 2
                  April 2000, 0.9%.

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                  "Adjusted French Augmentation Factor" expressed in percent (%)
                  equals

                  French Augmentation Factor x A   +   0.3% x B   -   100.0% x C
                  --------------------------------------------------------------
                                        Monthly Pension Amount

                  where A equals the lesser of

                  (i)      the sum of the Monthly Pension Amount and the APP
                           Adjusted Monthly Pension Amount

                  and

                  (ii)     FF 44,583.33,

                  where B equals the amount, if any, that the sum of the Monthly
                  Pension Amount and the APP Adjusted Monthly Pension Amount
                  exceeds FF 44,583.33, and

                  where C equals the monthly amount of the augmentation
                  determined under paragraph 19.7.5(E) of the Plan.

                  "Japanese Augmentation Factor" equals nil.

                  "Adjusted Japanese Augmentation Factor" equals nil.

                  "European Augmentation Factor" expressed in percent (%)
                  equals, in respect of a Member whose Commencement Date falls
                  before 2 April 2000, 1.3%.

                  "Adjusted European Augmentation Factor" equals

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                    European Augmentation Factor x A + 0.9% x B - 100.0% x C
                    --------------------------------------------------------
                                     Monthly Pension Amount

                    where A equals the lesser of

                    (i)      the sum of the Monthly Pension Amount and the APP
                             Adjusted Monthly Pension Amount

                    and

                    (ii)     E 6,833.33,

                    where B equals the amount, if any, that the sum of the
                    Monthly Pension Amount and the APP Adjusted Monthly Pension
                    Amount exceeds E 6,833.33, and

                    where C equals the monthly amount of the augmentation
                    determined under paragraph 19.7.5(G).

          15.07.4   Other than as provided for in paragraph 15.07.5, the monthly
                    amount of the augmentation on the date of calculation is
                    equal to the amount obtained when the Adjusted Canadian
                    Augmentation Factor is applied to the Monthly Pension
                    Amount.

          15.07.5   If the Monthly Pension Amount is paid in a currency other
                    than in Canadian dollars at a fixed rate of exchange, the
                    monthly amount of the augmentation is equal to:

                    (A)       in respect of a Monthly Pension Amount paid in
                              United States Dollars, the amount obtained when
                              the Adjusted American

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                              Augmentation Factor is applied to the Monthly
                              Pension Amount;

                    (B)       in respect of a Monthly Pension Amount paid in
                              Pounds Sterling, the amount obtained when the
                              Adjusted British Augmentation Factor is applied to
                              the Monthly Pension Amount;

                    (C)       in respect of a Member's Monthly Pension Amount
                              paid in Swiss Francs, the amount obtained when the
                              Adjusted Swiss Augmentation Factor is applied to
                              the Monthly Pension Amount;

                    (D)       in respect of a Member's Monthly Pension Amount
                              paid in German Marks, the amount obtained when the
                              Adjusted German Augmentation Factor is applied to
                              the Monthly Pension Amount;

                    (E)       in respect of a Member's Monthly Pension Amount
                              paid in French Francs, the amount obtained when
                              the Adjusted French Augmentation Factor is applied
                              to the Monthly Pension Amount;

                    (F)       in respect of a Member's Monthly Pension Amount
                              paid in Japanese Yen, the amount obtained when the
                              Adjusted Japanese Augmentation Factor is applied
                              to the Monthly Pension Amount;

                    (G)       in respect of a Member's Monthly Pension Amount
                              paid in Euros, the amount obtained when the
                              Adjusted European Augmentation Factor is applied
                              to the Monthly Pension Amount.

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          15.07.6   The compounded augmentation factor under this and any
                    previous pension augmentation, shall, unless it is an
                    integral number of tenths of 1%, be rounded to the next
                    higher multiple of 0.1%.

          15.07.7   The retirement pension of a Member, who retires on or after
                    1 October 2000 and who immediately prior to such retirement
                    was in receipt of an Approved Disability Benefit, shall be
                    augmented from his retirement date by the same augmentation
                    percentage that would otherwise have applied to his
                    retirement pension had his date of disability been his
                    Commencement Date for the purpose of calculating such
                    augmentation.

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