TIME-BASED STOCK OPTION GRANT
                      PURSUANT TO THE KAISER
               1997 OMNIBUS STOCK INCENTIVE PLAN


  1. Grant of Stock Option.  Kaiser Aluminum Corporation 
          ---------------------
("KAC") and Kaiser Aluminium & Chemical Corporation ("KACC"),
both Delaware corporations (collectively, the "Company"), hereby
evidence that the Company has granted to JOHN T. LA DUC
("Optionee") the right, privilege and option as herein set forth
(the "Stock Option") to purchase 468,750 shares of common stock,
$.01 par value per share, of KAC (as more fully described in
Optionee's Employment Agreement (the "Employment Agreement) with
the Company attached herewith as Attachment I, which is
incorporated herein and made a part hereof, the "Option Shares")
in accordance with the terms of this document (this "Stock Option
Grant").  

  The Stock Option is granted pursuant to the Kaiser 1997
Omnibus Stock Incentive Plan (the "Plan") and is subject to the
provisions of the Plan, a copy of which has been furnished to
Optionee and which is hereby incorporated in and made a part of
this Stock Option Grant, as well as to the provisions of this
Stock Option Grant.  By acceptance of the Stock Option, Optionee
agrees to be bound by all of the terms, provisions, conditions
and limitations of the Plan and this Stock Option Grant.

  All capitalized terms used herein shall have the meanings
provided in the Plan document unless otherwise specifically
provided in this Stock Option Grant or the Employment Agreement, 
including Attachment II attached herewith, which is incorporated 
          -------------
herein and made a part hereof.  The Stock Option is a
Nonqualified Stock Option under the Plan and is not intended to
qualify as an "incentive stock option" within the meaning of
Section 422 of the Code.

  All Option Shares, when issued to Optionee upon the exercise
of this Stock Option, shall be fully paid and nonassessable.

  2. Option Term.  Subject to earlier termination as 
          -----------
provided herein, or in the Plan, the Stock Option shall expire on
July 10, 2003.  The period during which the Stock Option is in
effect shall be referred to as the "Option Period".

  3. Option Exercise Price.  The exercise price per Option 
          ----------------------
Share (including any Attributable Securities, as defined in
Attachment II) (the "Option Price") at which Optionee may 
-------------
purchase such Option Shares subject to the Stock Option shall be
equal to the remainder of (i) $9.3125 per Option Share minus (ii)
the amount per Option Share of Distributed Cash Value (as defined
in Attachment II) determined as of the date of exercise.  Such 
   -------------
Option Price shall also be subject to adjustment as provided in
the Plan and this Stock Option Grant.  The Company shall notify
Optionee within thirty (30) days of each change in the Option
Price.

  4. Vesting.  The Stock Option may be exercised during the 
          -------
Option Period only to the extent it has become a "Vested Option". 
Provided Optionee's Qualified Service Period (as defined in
Attachment II) has not previously terminated, the Stock Option 
-------------
shall become a "Vested Option" as to 20% of the Option Shares as
of 12:01 a.m. Houston time on December 31, 1998, and an
additional 20% of the Option Shares as of 12:01 a.m. Houston time
on December 31, 1999, 2000, 2001, and 2002 respectively. 
Notwithstanding the preceding sentence, the Stock Option shall
become a "vested Option" to the extent that Sections 2, 3, 4 or 5
of the Employment agreement provide that the Stock Option shall
vest and become exercisable.

  5. Method of Exercise.  To exercise the Stock Option, 
          ------------------
Optionee shall deliver written notice to the Company stating the
number of Option Shares with respect to which the Stock Option is
being exercised together with payment for such Option Shares. 
Payment shall be made (i) in cash or its equivalent, (ii) by
tendering previously acquired Shares having an aggregate Fair
Market Value (as defined in the Plan) at the time of exercise
equal to the total Option Price (provided that the Shares which
are tendered must have been held by Optionee for at least six
months prior to their tender to satisfy the Option Price) or
(iii) by a combination of (i) and (ii).

  6. Termination of Optionee's Employment.  Termination of 
          ------------------------------------
Optionee's employment as a regular full-time salaried employee of
KAC, a Subsidiary (as defined in Attachment II), or any branch, 
                                 -------------
unit or division of KAC or any Subsidiary ("Employment") shall
affect Optionee's rights under the Stock Option as follows:

     (a)  Termination by the Company for Cause.  If Optionee's
  Employment is terminated by the Company at any time for Cause,
  (as defined in the Employment Agreement), then (i) the Option
  Period shall terminate and (ii) Optionee's right to exercise
  the Stock Option shall terminate, in each case immediately
  upon Optionee's becoming subject to termination of Employment
  for Cause.  

     (b)  Termination by the Company Other than for Cause.  If
  Optionee's Employment is terminated by the Company prior to
  January 1, 2003 other than as a result of termination of
  Optionee's Employment for Cause, (as defined in the Employment
  Agreement), then (i) the Stock Option and the Option Period
  shall not terminate and (ii) the Stock Option shall thereafter
  be exercisable as to all Option Shares from and including the
  date of such termination through and including the end of the
  Option Period. 

     (c)  Other Termination.  If Optionee's Qualified Service
  Period terminates prior to January 1, 2003 other than as a
  result of termination of Optionee's Employment by the Company,
  then (i) the Stock Option and the Option Period shall not
  terminate but the Stock Option shall thereafter be exercisable 
  in accordance with the provisions of Sections 2, 3, 4 or 5 of
  the Employment Agreement.

  The Stock Option may be exercised by Optionee or, in the case
of death, by the executor or administrator of Optionee's estate,
or the person or persons to whom Optionee's rights under the
Stock Option shall pass by will or by the applicable laws of
descent and distribution, or in the case of Disability (as
defined in the Employment Agreement), by Optionee's personal
representative consistent with the provisions of the Employment
Agreement.  

  7. Reorganizations; Repurchase of Stock Option.  
          -------------------------------------------

     (a)  Freedom to Reorganize the Company and Subsidiaries. 
  The existence of the Stock Option shall not affect in any way
  the right or power of the Company and its Subsidiaries or the
  issuers of Attributable Securities or its or their
  stockholders to make or authorize any and all Distribution
  Events (as defined in Attachment II) and any and all other 
                        --------------
  adjustments, recapitalizations, reorganizations or other
  changes in the capital structure or business of the Company or
  its Subsidiaries or the issuers of Attributable Securities,
  any and all issuances of bonds, debentures, common stock,
  preferred or prior preference stock, warrants, rights or other
  securities, whether or not affecting the Option Shares or the
  rights thereof, any dissolution or liquidation of the Company
  or any Subsidiary, any sale or other divestiture or transfer
  of all or any part of the assets or business of the Company or
  any Subsidiary or any issuer of Attributable Securities and
  any and all other corporate acts or proceedings, whether of a
  similar character or otherwise (collectively, including any
  Distribution Events, collectively, "Reorganizations").

     (b)  Spin-Offs.  If the Board of Directors authorizes any
  Distribution Event or other Reorganization as a result of
  which holders of Shares (as defined in Attachment II) become 
                                         --------------
  entitled, in their capacities as holders, to receive
  Marketable Securities, the Board of Directors shall, to the
  extent reasonably practicable, cause the Company to provide
  for or require: (i) that the issuer(s) of such Marketable
  Securities shall undertake to issue and deliver to Optionee,
  upon any subsequent exercise of the Stock Option, such
  Marketable Securities as Optionee would have received if
  Optionee had so exercised the Stock Option prior to such
  Distribution Event or other Reorganization and had
  participated therein (and in any and all subsequent
  Distribution Events or other Reorganizations) to the maximum
  extent allowed to holders of Shares (including any
  Attributable Securities) outstanding at the time of such
  Distribution Event or other Reorganization; (ii) that such
  Marketable Securities shall be so issued and delivered to
  Optionee pursuant to an effective registration statement under
  the Securities Act of 1933, as amended, or otherwise free of
  any restriction on resale thereof by Optionee, other than any
  restriction on resale arising from Optionee's being an
  Affiliate or Insider (as such terms are defined in the Plan)
  of such issuer; (iii) that such Marketable Securities shall be
  so issued and delivered without any agreement, condition,
  payment or other consideration being required of Optionee or
  the Company; (iv) that such issuer(s) shall at all times
  reserve for issuance a sufficient amount of such Marketable
  Securities to fulfill all obligations contemplated hereunder;
  and (v) that upon each such issuance, such Marketable
  Securities shall be duly authorized, validly issued, fully
  paid and nonassessable.  The Company shall also provide for or
  require that: (x) in the event any such issuer shall fail or
  be unable to issue and deliver to Optionee any Marketable
  Securities as provided in the preceding sentence, such issuer
  shall be obligated, in lieu of issuing and delivering such
  Marketable Securities, to pay to Optionee in cash, immediately
  upon exercise of the Stock Option, the Market Value of such
  Marketable Securities determined as of the date of exercise of
  the Stock Option; and (y) in the event the Company is
  obligated to make a cash payment to Optionee pursuant to
  Paragraph 8(b), such issuer shall be obligated to reimburse
  the Company for a part of such payment proportionate to the
  Distributed Cash Value attributable to Attributable Securities
  of such issuer compared to the total amount of Distributed
  Cash Value.

     (c)  Right to Repurchase Stock Option.  Upon receipt of a
  notice of exercise, the Company shall have the right but not
  the obligation to repurchase, and thereby to satisfy all of
  the Company's obligations under, the Stock Option as to the
  number of Option Shares as to which the Stock Option is
  exercised by paying Optionee in cash an amount, net of any
  taxes required to be withheld, equal to the sum of (A) the
  product of (i) the number of Option Shares as to which the
  Stock Option is exercised multiplied by (ii) the amount,
  determined as of such date of exercise, equal to the remainder
  of (x) the Market Value of one Option Share minus (y) the
  Option Price plus (B) the amount of cash, if any, payable to
  Optionee pursuant to Paragraph 8(b).

  8. Adjustments.   
          -----------

     (a)  In the event of any one or more Distribution Events or
  other Reorganizations affecting the Stock Option and not
  already adjusted for under Paragraph 7, the Option Price and
  the number of Option Shares subject to the Stock Option shall
  be appropriately adjusted by the Board of Directors.  In
  addition, the Board of Directors shall, as permitted by
  Section 3.2, Section 16.2 and other provisions of the Plan,
  construe and interpret the Plan and this Stock Option Grant
  and make all appropriate adjustments in order to prevent
  dilution or enlargement of the benefits or potential benefits
  intended to be made available to Optionee under this Stock
  Option Grant and the Plan.

     (b)  Without limitation to the foregoing, in the event that
  the amount of Distributed Cash Value as of any date of
  exercise of the Stock Option is equal to or greater than
  $9.3125 per Option Share, the Option Price shall be deemed to
  be $.01 per Option Share and the Company, in addition to
  issuing Option Shares to Optionee, shall pay to Optionee in
  respect of each Option Share as to which the Stock Option is
  exercised an amount of cash equal to the remainder of (i) such
  amount of Distributed Cash Value per Option Share minus
  (ii) $9.3125.

  9. No Rights in Option Shares.  Optionee shall have no 
          --------------------------
rights as a stockholder in respect of Option Shares until such
Optionee becomes the holder of record of such Option Shares.

  10.     Option Shares Reserved.  The Company shall at all times 
          ----------------------
during the Option Period reserve and keep available such number
of Shares as will be sufficient to satisfy the requirements of
this Stock Option.

  11.     Nontransferability of Stock Option.  The Stock Option 
          ----------------------------------
granted pursuant to this Stock Option Grant is not transferable
other than by will, the laws of descent and distribution or by
qualified domestic relations order.  The Stock Option will be
exercisable during Optionee's lifetime only by Optionee or by
Optionee's guardian or legal representative.  No right or benefit
hereunder shall in any manner be liable for or subject to any
debts, contracts, liabilities, or torts of Optionee.

  12.     Amendment and Termination.  No amendment or termination 
          -------------------------
of the Stock Option shall be made by the Board of Directors or
the Committee (as defined in the Plan) at any time without the
written consent of Optionee.  No amendment of the Plan will
adversely affect the rights, privileges and options of Optionee
under the Stock Option without the written consent of Optionee.

  13.     No Guarantee of Employment.  The Stock Option shall not 
          --------------------------
confer upon Optionee any right with respect to continuance of
Employment or other service with the Company or any Subsidiary or
Affiliate, nor shall it interfere in any way with any right the
Company or any Subsidiary or Affiliate would otherwise have to
terminate such Optionee's Employment or other service at any
time.

  14.     Withholding of Taxes.  The Company shall have the right 
          --------------------
to deduct or withhold, or require Optionee to remit to the
Company, an amount sufficient to satisfy all federal, state and
local taxes, domestic or foreign, required by law or regulation
to be withheld with respect to any taxable event arising under
this Stock Option Grant or any exercise or other action or event
hereunder.

  15.     No Guarantee of Tax Consequences.  Neither the Company 
          --------------------------------
nor any Subsidiary or Affiliate, nor the Board of Directors or
any Committee, makes any commitment or guarantee that any federal
or state tax treatment will apply or be available to any person
eligible for benefits under the Stock Option.

  16.     Severability.  In the event that any provision of the 
          ------------
Stock Option shall be held illegal, invalid, or unenforceable for
any reason, such provision shall be fully severable, but shall
not affect the remaining provisions of the Stock Option, and the
Stock Option shall be construed and enforced as if the illegal,
invalid, or unenforceable provision had never been included
herein.

  17.     Governing Law.  The Stock Option shall be construed in 
          -------------
accordance with the laws of the State of Texas to the extent
federal law does not supersede and preempt Texas law.
Executed effective as of the 10th day of July, 1998.

                         "COMPANY"

                         KAISER ALUMINUM CORPORATION


                         By: /s/ George T. Haymaker, Jr.
                         Printed Name:  George T. Haymaker,Jr.
                                        ----------------------
                         Title: Chairman and CEO
                                ----------------

                         KAISER ALUMINUM & CHEMICAL CORPORATION


                         By: /s/ George T. Haymaker, Jr.
                         Printed Name:  George T. Haymaker, Jr.
                                        -----------------------
                         Title: Chairman and CEO
                                ----------------


  Accepted effective as of the 10th day of July, 1998.

                         "OPTIONEE"

                         /s/ John T. La Duc

                         Printed Name: John T. La Duc
                                       ---------------
                         Title: Executive Vice President and
                                   Chief Financial Officer
                                -----------------------------


                                                           Attachment II

                 Time-Based Stock Option Grant
                                
            Definitions Applicable to Certain Terms

"Affiliate"   see Section 2.1 of the Plan.

"Attributable Securities"   see the definition of "Option Share".

"Distributed Cash Value" means, as of any determination date, the
aggregate amount of cash (other than regular quarterly cash
dividends, if any) plus the aggregate value, as determined by the
Board of Directors as of the date of distribution, of all
property (other than cash and Attributable Securities)
distributed or set aside for distribution to the holder of one
Original Share and all Attributable Securities, if any, during
the period commencing January 1, 1998 and ending on the
determination date.

"Distribution Events" means any and all distributions, dividends,
recapitalizations, forward or reverse splits, reorganizations,
mergers, consolidations, spin-offs, combinations, repurchases,
share exchanges, or other similar or substantially equivalent
corporate transactions or events in which the holder of a
security becomes, as such, entitled to receive cash, securities
or other property in addition to or in exchange for or upon
conversion of such security.

"Employment"   see Paragraph 6 of this Stock Option Grant.

"Insider"   see Section 2.19 of the Plan.

"KAC"   see Paragraph 1 of this Stock Option Grant.

"KACC"   see Paragraph 1 of this Stock Option Grant.

"Market Value" means, as of any Trading Day, the average of the
highest and lowest sales prices as reported by the consolidated
tape (or, if such prices are not quoted, the average of the
quoted closing bid and asked prices) on such Trading Day for one
Option Share (including, as applicable, the Market Values of any
Attributable Securities).  In the event that sales prices or
closing bid and asked prices are not quoted on a particular
Trading Day, the Market Value for that Trading Day shall be
deemed to be the Market Value for the immediately preceding
Trading Day.  In the event that any Attributable Security shall
cease to be a Marketable Security, it shall thereupon be deemed
to have no further Market Value and shall be deemed instead to
have, as of the date it ceases to be a Marketable Security, such
Distributed Cash Value as shall be determined by the Board of
Directors.

"Marketable Securities" means securities (a) of a class that is
registered under the Securities Exchange Act of 1934, as amended,
(b) for which sales prices or bid and asked prices are regularly
quoted and (c) that, if issued and delivered to Optionee upon
exercise of the Stock Option, would not be subject to any
restriction on resale, other than any restriction arising from
Optionee's being an Affiliate or Insider (as such terms are
defined in the Plan) of the issuer of such Marketable Securities.

"Option Period"   see Paragraph 2 of this Stock Option Grant.

"Option Price"   see Paragraph 3 of this Stock Option Grant.

"Option Share" means (a) one Share as constituted on January 1,
1998 (an "Original Share") and (b) in the event of any one or
more successive Distribution Events, all Marketable Securities
("Attributable Securities") into which or for which an Original
Share or any Attributable Securities may be converted or
exchanged or that a Stockholder may have the right to receive in
respect of such Original Share or Attributable Securities.

"Optionee"   see Paragraph 1 of this Stock Option Grant.

"Original Share"   see the definition of "Option Share".

"Plan"   see Paragraph 1 of this Stock Option Grant.

"Qualified Service Period" means the period from and including
January 1, 1998 through and including the earlier of (a) December
31, 2002 or (b) the date immediately preceding the date of
termination of Optionee's Employment; provided, however, that if 
                                      --------  --------
Optionee's Employment has not terminated prior to the date that a
proposed transaction is announced by KAC that would cause KAC to
experience a change in control and such transaction is
subsequently consummated so that KAC experiences a change in
control, then Optionee's Qualified Service Period shall be deemed
to continue through the date of consummation of such transaction
and change in control unless Optionee's Employment is terminated
by the Company for Cause or by Optionee .

"Reorganization"   see Section 7(a) of this Stock Option Grant.

"Share" means one share of common stock, par value $.01 per
share, of KAC.

"Stock Option"   see Paragraph 1 of this Stock Option Grant.

"Subsidiary"   see Section 2.32 of the Plan.  For avoidance of
doubt, KACC shall be considered a Subsidiary of KAC so long as
KAC has a majority voting interest in KACC, and KAC shall be
considered to have a majority voting interest whether it holds
such interest directly or indirectly through one or more
Subsidiaries.

"Trading Day" means as to an Option Share (including any
Attributable Securities) a day when the New York Stock Exchange
(or other principal securities exchange, including Nasdaq, on
which such securities are traded) is open.