Exhibit 10(a)
                 LONG TERM STOCK INCENTIVE PLAN

                               OF

                   ALUMINUM COMPANY OF AMERICA
              (Revised, Effective January 1, 1997)




                            ARTICLE I
                           DEFINITIONS

The following words as used herein shall have the following
meanings unless the context otherwise requires.

PLAN means the Long Term Stock Incentive Plan of Aluminum Company
of America, as amended from time to time, which is a continuation
of the Employees' Stock Option Plan.

COMPANY means Aluminum Company of America.

SUBSIDIARY means any corporation in which the Company owns,
directly or indirectly, stock possessing 50% or more of the total
combined voting power of all classes of stock in such other
corporation, and any corporation, partnership, joint venture or
other business entity as to which the company possesses a direct
or indirect ownership interest where either (a) such interest
equals 50% or more or (b) the Company directly or indirectly has
power to exercise management control.

BOARD means the Board of Directors of the Company and includes
any duly authorized Committee when acting in lieu thereof.

EMPLOYEE means any employee of the Company or a Subsidiary.

AWARD means any stock option award granted or delivered under the
Plan.

OPTIONEE means any person who has been granted a stock option
under the Plan.

COMMITTEE means the Committee established under Section 1 of
Article V to administer the Plan.

COMPANY STOCK means common stock of the Company and such other
stock and securities, described in Section 2 of Article IV, as
shall be substituted therefor.

FAIR MARKET VALUE means, with respect to Company Stock, (1) the
mean of the high and low sales prices of such stock (a) as
reported on the composite tape (or other appropriate reporting
vehicle as determined by the Committee) for a specified date or,
if no such report of such price shall be available for such date,
as reported for the New York Stock Exchange for such date or (b)
if the New York Stock Exchange is closed on such date, the mean
of the high and low sales prices of such stock as reported in
accordance with (a) above for the next preceding day on which
such stock was traded on the New York Stock Exchange, or (2) at
the option of and as determined by the Committee, the average of
the mean of the high and low sales prices of such stock as
reported in accordance with (1) above for a period of up to ten
consecutive business days.

OPTION PERIOD means the period of time provided pursuant to
Section 4 of Article III within which a stock option may be
exercised, without regard to the limitations on exercise imposed
pursuant to Section 5 of Article III.


                           ARTICLE II
                          PARTICIPATION

SECTION 1.  Purpose.  The purposes of the Plan are to motivate
key employees, to permit them to share in the long-term growth
and financial success of the Company and its Subsidiaries while
giving them an increased incentive to promote the well-being of
those companies, and to link the interests of key employees to
the long-term interests of the Company's shareholders.

SECTION 2.  Eligibility.  Employees who, in the sole opinion of
the Committee, play a key role in the management, operation,
growth or protection of some part or all of the business of the
Company and its Subsidiaries (including officers and employees
who are members of the Board) shall be eligible to be granted
Awards under the Plan.  The Committee shall select from time to
time the Employees to whom Awards shall be granted.  No Employee
shall have any right whatsoever to receive any Award unless
selected therefor by the Committee.

SECTION 3. Limitation on Optioned Shares.  In no event may any
stock option be granted to any Employee who owns stock possessing
more than five percent of the total combined voting power or
value of all classes of stock of the Company.  The maximum number
of shares subject to options awarded to any one individual in any
calendar year may not exceed one million shares.

SECTION 4.  No Employment Rights.  The Plan shall not be
construed as conferring any rights upon any person for a
continuation of employment, nor shall it interfere with the
rights of the Company or any Subsidiary to terminate the
employment of any person and/or take any personnel action
affecting such person without regard to the effect which such
action might have upon such person as an Optionee or prospective
Optionee.


                           ARTICLE III
                        TERMS OF OPTIONS

SECTION 1.  General.  The Committee from time to time shall
select the Employees to whom stock options shall be granted, the
type of stock options and the number of shares of Company Stock
to be included in each such option.  Each option granted under
the Plan shall be subject to the terms and conditions required by
this Article III, and such other terms and conditions not
inconsistent therewith as the Committee may deem appropriate in
each case.

SECTION 2.  Option Price.  The price at which each share of
Company Stock covered by an option may be purchased shall be
determined by the Committee.  In no event shall such price be
less than one hundred percent of the Fair Market Value of Company
Stock either on the date the option is granted or over a period
of up to ten business days as specified by the Committee.  The
option price of each share purchased pursuant to an option shall
be paid in full at the time of such purchase.  The purchase price
of an option shall be paid in cash, provided however that, to the
extent permitted by and subject to any limitations contained in
any stock option agreement or in rules adopted by the Committee,
such option purchase price may be paid by the delivery to the
Company of shares of Company Stock having an aggregate Fair
Market Value on the date of exercise which, together with any
cash payment by the Optionee, equals or exceeds such option
purchase price.  The Committee shall determine whether and if so
the extent to which actual delivery of share certificates to the
Company shall be required.  The foregoing provisions relating to
the delivery of Company Stock in lieu of payment of cash upon
exercise of an option apply to all outstanding options.

SECTION 3.  Types of Options.  The Committee shall have the
authority, in its sole discretion, to grant to Employees from
time to time non-qualified stock options and such other types of
options as are permitted by law or the provisions of the Plan.

SECTION 4.  Period for Exercise.  The Committee shall determine
the period or periods of time within which the option may be
exercised by the Optionee, in whole or in part, provided that the
Option Period shall not exceed ten years from the date the option
is granted.

SECTION 5.  Special Limitations.  Notwithstanding the Option
Period provided in Section 4 of this Article III, a stock option
(other than a reload stock option) shall not be exercisable until
one year after the date the option is granted.

SECTION 6.  Termination of Employment.

     (a)  Subject to the provisions of Section 4 and 5 of this
Article III, the Committee shall specify in administrative rules
or otherwise, the rules that shall apply to stock options with
respect to the exercise of any stock options upon termination of
the Optionee's employment.

     (b)  Following the Optionee's death, the option may be
exercised by the Optionee's legal representative or
representatives, or by the person or persons entitled to do so
under the Optionee's last will and testament, or, if the Optionee
shall fail to make testamentary disposition of the option or
shall die intestate, by the person or persons entitled to receive
said option under the intestate laws.

     (c)  The Committee in its sole discretion may shorten the
period of exercise of any such stock option in the event that the
Optionee takes any action which in the judgment of the Committee
is not in the best interests of the Company and its Subsidiaries.

SECTION 7. Transferability; Beneficiaries; Etc.  Each stock
option shall be nontransferable by the Optionee except by last
will and testament or the laws of descent and distribution and is
exercisable during the Optionee's lifetime only by the Optionee
or a legal representative.  Notwithstanding the foregoing and the
preceding Section 6, at the discretion of the Committee,
  (a)  some or all Optionees may be permitted to transfer some or
     all of their options to one or more immediate family members,
     and/or
  (b)  some or all Optionees may be permitted to designate one or
     more beneficiaries to receive some or all of their Awards and
     stock appreciation rights in the event of death prior to 
     exercise thereof, in which event a permitted beneficiary or 
     beneficiaries shall then have the right to exercise or 
     receive payment for each affected Award or stock 
     appreciation right in accordance with its other terms and 
     conditions.

SECTION 8.  Employment Obligation.  In consideration for the
granting of each stock option, except options delivered under
Section 11 of this Article III, the Optionee shall agree to
remain in the employment of the Company or one or more of its
Subsidiaries, at the pleasure of the Company or such Subsidiary,
for a continuous period of at least one year after the date of
grant of such stock option or until retirement, on a date which
is at least six months after the date of such grant, under any
retirement plan of the Company or a Subsidiary, whichever may be
earlier, at the salary rate in effect on the grant date or at
such changed rate as may be fixed from time to time by the
Company or such Subsidiary.  At the discretion of the Committee,
this obligation may be deemed to have been fulfilled under
specified circumstances, such as if the Optionee enters
government service.

SECTION 9.  Date Option Granted.  For the purposes of the Plan, a
stock option shall be considered as having been granted on the
date on which the Committee authorized the grant of such stock
option, except where the Committee has designated a later date,
in which event such designated date shall constitute the date of
grant of such stock option, provided, however, that in either
case notice of the grant of the option shall be given to the
Employee within a reasonable time.

SECTION 10.  Alternative Settlement Methods.  Where local law may
interfere with the normal exercise of an option, the Committee in
its discretion may approve stock appreciation rights or other
alternative methods of settlement for stock options.

SECTION 11.  Reload Stock Options.  The Committee shall have the
authority to specify, either at the time of grant of a stock
option or at a later date, that upon exercise of all or a portion
of that stock option (except an option referred to in the next
section, Section 12) a reload stock option shall be granted under
specified conditions. A reload stock option may entitle the
Optionee to purchase shares (i) which are covered by the
exercised option or portion thereof at the time of exercise of
such option or portion but are not issued upon such exercise, or
(ii) whose value (on the date of grant) equals the purchase price
of the exercised option or portion thereof and any related tax
withholdings.  The exercise price of the reload stock option
shall be the Fair Market Value at the time of grant, determined
in accordance with Section 2 of this Article III.  The duration
of a reload stock option shall not extend beyond the expiration
date of the option it replaces.  The specific terms and
conditions applicable for reload stock options shall be
determined by the Committee and shall be set forth in rules
adopted by the Committee and/or in agreements or other
documentation evidencing reload stock options.

SECTION 12.  Dividend Equivalents.  Stock options delivered in
payment of contingent awards of performance shares (effective
January 1993, these types of awards are no longer granted) may
provide the Optionee with dividend equivalents payable in cash,
shares, additional discount options or other consideration prior
to exercise.


                           ARTICLE IV
                          COMPANY STOCK

SECTION 1. Number of Shares.  The shares of Company Stock that
may be issued under the Plan, out of authorized but heretofore
unissued Company Stock, or out of Company Stock held as treasury
stock, or partly out of each, shall not exceed 8.6 million shares
plus an additional number of share equal to the number of shares
which at January 1, 1997 were reserved for issuance under the
Plan as then in effect.  Except as otherwise determined by the
Committee, the number of shares of Company Stock so reserved
shall be reduced by the number of shares issued upon an Option
exercise, less (i) the shares, if any, used to pay withholding
taxes and/or (ii) the shares, if any, delivered by the Optionee
in full or partial payment of the option purchase price.  Unless
the Committee otherwise determines, shares not purchased under
any option granted under the Plan which are no longer available
for purchase thereunder by virtue of the total or partial
expiration, termination or voluntary surrender of the option and
which were not issued upon exercise of a related stock
appreciation right and shares referred to in clauses (i) or (ii)
of the preceding sentence shall continue to be otherwise
available for the purposes of the Plan.  Payments for Awards in
cash shall reduce the number of shares available for issuance by
such number of shares as has a Fair Market Value at the time of
such payment equal to such cash.

SECTION 2.  Adjustments in Stock.

     (a)  Stock Dividends.  If a dividend shall be declared upon
Company Stock payable in shares of said stock, (i) the number of
shares of Company Stock subject to outstanding Awards and (ii)
the number of shares reserved for issuance pursuant to the Plan
shall be adjusted by adding to each such share the number of
shares which would be distributable thereon if such share had
been outstanding on the date fixed for determining the
shareholders entitled to receive such stock dividend.

     (b)  Reorganization, Etc.  In the event that the outstanding
shares of Company Stock shall be changed into or exchanged for a
different number or kind of shares of stock or other securities
of the Company or of another corporation, whether through
reorganization, recapitalization, stock split-up, combination of
shares, merger or consolidation, or otherwise, then there shall
be substituted for each share of Company Stock subject to
outstanding Awards  and for each share of Company Stock reserved
for issuance pursuant to the Plan, the number and kind of shares
of stock or other securities which would have been substituted
therefor if such share had been outstanding on the date fixed for
determining the shareholders entitled to receive such substituted
stock or other securities.

     (c)  Other Changes in Stock.  In the event there shall be
any change, other than as specified in subsections (a) and (b) of
this Section 2, in the number or kind of outstanding shares of
Company Stock or of any stock or other securities into which such
Company Stock shall be changed or for which it shall have been
exchanged, then and if the Committee shall at its discretion
determine that such change equitably requires an adjustment in
the number or kind of shares subject to outstanding Awards or
which have been reserved for issuance pursuant to the Plan, such
adjustments shall be made by the Committee and shall be effective
and binding for all purposes of the Plan and each outstanding
stock option and other Award.

     (d)  General Adjustment Rules.  No adjustment or
substitution provided for in this Section 2 shall require the
Company to sell or deliver a fractional share under any stock
option or other Award and the total substitution or adjustment
with respect to each Award shall be handled in the discretion of
the Committee either by deleting any fractional shares or by
appropriate rounding up to the next whole share.  In the case of
any such substitution or adjustment, the option price per share
for each stock option shall be equitably adjusted by the
Committee to reflect the greater or lesser number of shares of
stock or other securities into which the stock subject to the
option may have been changed.


                            ARTICLE V
                         GENERAL MATTERS

SECTION 1.  Administration.  The Plan shall be administered by a
Committee of not less than three Directors appointed by the
Board, none of whom shall have been eligible to receive an Award
under the Plan within the twelve months preceding their
appointment.

SECTION 2.  Authority of Committee.  Subject to the provisions of
the Plan, the Committee shall have full and final authority to
determine the Employees to whom Awards shall be granted, the type
of Awards to be granted, the number of shares to be included in
each Award, and the other terms and conditions of the Awards.
Nothing contained in this Plan shall be construed to give any
Employee the right to be granted an Award or, if granted, to any
terms and conditions therein except such as may be authorized by
the Committee.  The Committee is empowered, in its discretion, to
(i) modify, amend, extend or renew any Award theretofore granted,
subject to the limitations set forth in Article III and with the
proviso that no modification or amendment shall impair without
the Optionees' consent any option theretofore granted under the
Plan, (ii) adopt such rules and regulations and take such other
action as it shall deem necessary or proper for the
administration of the Plan and (iii) delegate any or all of its
authority (including the authority to select eligible employees
and to grant stock options) to one or more senior officers of the
Company, except with respect to Awards for officers or any
performance share awards, and except in the event that any such
delegation would cause this Plan not to comply with Securities
and Exchange Commission Rule 16b-3 (or any successor rule).  The
Committee shall have full power and authority to construe,
interpret and administer the Plan, and the decisions of the
Committee shall be final and binding upon all parties.

SECTION 3.  Withholding.  The Company or any Subsidiary shall
have the right to deduct from all amounts paid in cash under this
Plan any taxes required by law to be withheld therefrom.  In the
case of payments of Awards in the form of Company Stock, at the
Committee's discretion, (a) the Optionee may be required to pay
over the amount of any withholding taxes, (b) the Optionee may be
permitted to deliver to the Company the number of shares of
Company Stock whose Fair Market Value is equal to or less than
the withholding taxes due or (c) the Company may retain the
number of shares calculated under (b) above.

SECTION 4.  Nonalienation.  No Award shall be assignable or
transferable, except by will or the laws of descent and
distribution, and except that in its discretion the Committee may
authorize exercise by or payment to a beneficiary designated by
an Optionee.  No right or interest of any Optionee in any Award
shall be subject to any lien, obligation or liability.

SECTION 5.  General Restriction.  Each Award shall be subject to
the requirement that if at any time the Board or the Committee
shall determine in its discretion that the listing, registration
or qualification of shares upon any securities exchange or under
any state or Federal law, rule, regulation or decision, or the
consent or approval of any government regulatory body, is
necessary or desirable as a condition of, or in connection with,
the granting of such Award or the issue, purchase or delivery of
shares or payment thereunder, such Award may not be exercised in
whole or in part and no payment therefor shall be delivered
unless such listing, registration, qualification, consent or
approval shall have been effected or obtained free of any
conditions not acceptable to the Board or Committee.

SECTION 6.  Effective Date and Duration of Plan.  The Plan
initially became effective May 1, 1965.  The Plan as amended
herein shall become effective January 1, 1997.  No Awards shall
be granted under the Plan after January 1, 2002 although shares
thereafter may be delivered in payment of Awards granted prior
thereto.

SECTION 7.  Amendments.  The Board may from time to time amend,
modify, suspend or terminate the Plan, provided, however, that no
such action shall (a) impair without an Optionee's consent any
option theretofore granted under the Plan or deprive any Awardee
of any shares of Company Stock which that person may have
acquired through or as a result of the Plan or (b) be made
without the approval of the shareholders of the Company where
such change would materially increase the benefits accruing to
Optionees, materially increase the maximum number of shares which
may be issued under the Plan or materially modify the Plan's
eligibility requirements.

SECTION 8.  Construction.  The Plan shall be interpreted and
administered under the laws of the Commonwealth of Pennsylvania
without application of its rules on conflict of laws.

                           ARTICLE VI
                [DELETED, Effective January 1997]