MINNESOTA MINING & MANUFACTURING CO
PRE 14A, 2000-03-09
ABRASIVE, ASBESTOS & MISC NONMETALLIC MINERAL PRODS
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                                  SCHEDULE 14A
                                 (RULE 14a-101)
                     INFORMATION REQUIRED IN PROXY STATEMENT
                            SCHEDULE 14A INFORMATION

               PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE
                SECURITIES EXCHANGE ACT OF 1934 (AMENDMENT NO. )

Filed by the registrant [X]

Filed by a party other than the registrant [ ]

Check the appropriate box:
[X]  Preliminary proxy statement
[ ]  Definitive proxy statement
[ ]  Definitive additional materials
[ ]  Soliciting material pursuant to Rule 14a-11(c) or Rule 14a-12
[ ]  Confidential, for Use of the Commission Only (as permitted by Rule
     14a-6(e)(2))

                   MINNESOTA MINING AND MANUFACTURING COMPANY
- --------------------------------------------------------------------------------
                (Name of Registrant as Specified in Its Charter)



- --------------------------------------------------------------------------------
    (Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

[ ]  No fee required
[ ]  Fee computed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11.

     (1)  Title of each class of securities to which transaction applies:

     (2)  Aggregate number of securities to which transactions applies:

     (3)  Per unit price or other underlying value of transaction computed
          pursuant to Exchange Act Rule 0-11. (Set forth the amount on which the
          filing fee is calculated and state how it was determined.)

     (4)  Proposed maximum aggregate value of transaction:

     (5)  Total fee paid:

[ ]  Fee paid previously with preliminary materials.
[ ]  Check box if any part of the fee is offset as provided by Exchange Act Rule
     0-11(a)(2) and identify the filing for which the offsetting fee was paid
     previously. Identify the previous filing by registration statement number,
     or the Form or Schedule and the date of its filing.

     (1)  Amount previously paid:

     (2)  Form, Schedule or Registration Statement No.:

     (3)  Filing party:

     (4)  Date filed:

<PAGE>


March 24, 2000

                                   IMPORTANT:
               NOTICE OF 2000 3M ANNUAL MEETING, INTERNET VOTING,
                    AND ONLINE ACCESS TO 2000 PROXY STATEMENT
                             AND 1999 ANNUAL REPORT

Dear 3M Stockholder:

Thank you for consenting to receive the Proxy Statement and Annual Report to
Stockholders via the Internet instead of receiving paper copies in the mail.

Beginning today, you may access the 2000 Proxy Statement and 1999 Annual Report
at:

        http://www.3M.com/profile/finance/proxy/index.html

Your proxy card and voting instructions are enclosed with this notice. There are
three ways to vote your proxy:

    *   INTERNET - You may vote your proxy from any location in the world.
        Follow the instructions on the proxy card.

    *   TELEPHONE - If you live in the United States, you may submit your proxy
        by following the instructions on the proxy card.

    *   MAIL - You may do this by signing your proxy card and mailing it in the
        enclosed, postage-paid, pre-addressed envelope.

YOUR VOTE IS IMPORTANT! PLEASE TAKE A MOMENT TO REVIEW THE PROXY MATERIALS, AND
VOTE YOUR SHARES AS SOON AS POSSIBLE.

You may also vote shares registered in your name at the Annual Meeting, which
will be held at 10 a.m. on Tuesday, May 9, 2000, at the RiverCentre, St. Paul
Minnesota. The proposals to be voted on and procedures for voting are described
in the 2000 Proxy Statement.

You may request paper copies of the 2000 Proxy Statement and 1999 Annual Report
by calling 1-800-3M-HELPS, or by e-mail at [email protected].

Stockholders are responsible for usage charges from Internet service providers
and telephone companies. 3M does not charge fees for electronic access.

<PAGE>


                                IMPORTANT NOTICE:
                       3M STOCKHOLDERS CAN CHOOSE TO VIEW
                   FUTURE ANNUAL REPORTS AND PROXY STATEMENTS
                                 ON THE INTERNET

        3M is offering stockholders of record the option to view future Annual
Reports to Stockholders and Proxy Statements via the Internet, instead of
receiving paper copies of these documents in the mail. This notice addresses a
number of questions that you may have about this option.

        Q: WHO QUALIFIES?

        A: This option is available only if you are a 3M stockholder "of
record," (i.e., a stockholder who is registered on the books of 3M's transfer
agent, Norwest Bank Minnesota, N.A., as holding 3M stock directly in your own
name).

        Q: HOW DO I ELECT THIS OPTION?

        A: If you are interested in viewing future Annual Reports to
Stockholders and Proxy Statements on the Internet, instead of receiving paper
copies of these documents, please do the following:

            (1) Go to web site http://www.econsent.com/mmm.

            (2) Review Important Considerations and Frequently Asked Questions.

            (3) You will need your account number, which can be found above your
                name and address on your dividend check stub and your social
                security number, if you have a social security number.

            (4) Follow the prompts.

        Q: WHAT ARE THE SYSTEM REQUIREMENTS?

        A: To obtain the documents, you will need access to the Internet through
your personal computer. Commercial services such as America Online, MCI, AT&T
and many other Internet service providers offer access to the Internet with
Netscape Navigator, Microsoft Internet Explorer, or other Internet search engine
software. You also will need Adobe Acrobat Reader to view and/or print the
documents. (This software is available free of charge.) Stockholders are
responsible for any charges imposed by Internet service providers; 3M does not
charge any fees for access to its web site.

        Q: HOW DO I ACCESS THE WEB SITE ON THE INTERNET?

        A: When the 3M Proxy Statement and Annual Report are available on its
Internet web site, 3M will mail you a notice which will include a web site
address to access the documents, instructions on voting your proxy via the
Internet or by telephone, and a proxy card if you choose to vote by mail. The
proxy card that is delivered to stockholders who have elected electronic
delivery will cover shares that are directly registered with Norwest Bank
Minnesota, N.A. in the stockholder's name. Notification is expected to begin on
or about March 31st of each year.

        Q: HOW DO I REVOKE MY CONSENT?

        A: You can revoke your consent at the web site
http://www.econsent.com/mmm. Once there, click on the Proceed button, fill in
the appropriate information and click on the Submit button. You will then see
the appropriate screen to change your consent. You will then receive paper
copies of future Annual Reports to Stockholders and Proxy Statements.

<PAGE>


LIVIO D. DESIMONE
Chairman of the Board and
Chief Executive Officer




March 24, 2000                                                         [LOGO] 3M




Dear Stockholder:

        We cordially invite you to attend the Annual Meeting of Stockholders,
which will be held on Tuesday, May 9, 2000, at 10 a.m., at the RiverCentre, 175
West Kellogg Boulevard, St. Paul, Minnesota.

        Details regarding admission to the meeting and the business to be
conducted are more fully described in the accompanying Notice of Annual Meeting
and Proxy Statement. I will report on current operations and discuss our plans
for growth. We also will leave plenty of time for your questions and comments.

        The fine attendance of our stockholders at annual meetings over the
years has been very helpful in maintaining good communications and
understanding. We sincerely hope you will be able to be with us. YOUR ATTENDANCE
CARDS TO THE ANNUAL MEETING ARE LOCATED ON THE BACK COVER OF THIS PROXY
STATEMENT.

        Your vote is important. Whether or not you plan to attend the annual
meeting, I hope you will vote as soon as possible. This year you may vote over
the Internet, as well as by telephone or by mailing a traditional proxy card.
Voting over the Internet, by telephone, or by written proxy card will ensure
your representation at the Annual Meeting if you do not plan to attend in
person. Please review the instructions on the proxy card regarding each of these
voting options.

        Thank you for your ongoing support of our Company.



Cordially,

/s/ Livio D. DeSimone

<PAGE>


                   MINNESOTA MINING AND MANUFACTURING COMPANY
                      3M CENTER, ST. PAUL, MINNESOTA 55144
                    NOTICE OF ANNUAL MEETING OF STOCKHOLDERS



TIME                    10:00 a.m. on Tuesday, May 9, 2000


PLACE                   RiverCentre
                        175 West Kellogg Boulevard
                        St. Paul, Minnesota


ITEMS OF BUSINESS       (1) To elect four directors to the 2003 Class;
                        (2) To ratify the appointment of PricewaterhouseCoopers
                            LLP, independent auditors, to audit the consolidated
                            financial statements of the Company for the year
                            2000;
                        (3) To approve an amendment to the Restated Certificate
                            of Incorporation to increase the authorized common
                            stock and change par value; and
                        (4) To consider such other business as may properly come
                            before the meeting or any adjournments thereof.


RECORD DATE             You are entitled to vote if you were a stockholder at
                        the close of business on Friday, March 10, 2000.


MEETING ADMISSION       Two cutout admission tickets are included on the back
                        cover of this proxy statement.


VOTING BY PROXY         Please submit a proxy as soon as possible so that your
                        shares can be voted at the meeting in accordance with
                        your instructions. You may submit your proxy
                             (1) Over the Internet,
                             (2) By telephone, or
                             (3) By mail.
                        For specific instructions, please refer to the QUESTIONS
                        AND ANSWERS on page 2 of this proxy statement and the
                        voting instructions on the proxy card.



                                       By Order of the Board of Directors

                                       /s/ ROGER P. SMITH

                                       ROGER P. SMITH
                                       SECRETARY

THIS PROXY STATEMENT AND PROXY CARD ARE BEING DISTRIBUTED ON OR ABOUT MARCH 24,
2000.


                                       i
<PAGE>


                       2000 ANNUAL MEETING OF STOCKHOLDERS
                  NOTICE OF ANNUAL MEETING AND PROXY STATEMENT
                                TABLE OF CONTENTS

Notice of Annual Meeting of Stockholders .................................... i

Questions and Answers about the Proxy Materials and the Annual Meeting ...... 1

    Why am I receiving these materials? ..................................... 1

    What information is contained in these materials? ....................... 1

    What proposals will be voted on at the meeting? ......................... 1

    What are 3M's voting recommendations? ................................... 1

    What shares owned by me can be voted? ................................... 1

    What is the difference between holding shares as a stockholder of
     record and as a beneficial owner? ...................................... 2

    How can I vote my shares? ............................................... 2

    Can I change my vote? ................................................... 2

    How are votes counted? .................................................. 2

    What is the voting requirement to approve each of the proposals? ........ 3

    What does it mean if I receive more than one proxy or voting
     instruction card? ...................................................... 3

    How can I obtain an admission ticket for the meeting? ................... 3

    Where can I find the voting results of the meeting? ..................... 3

    What class of shares are entitled to be voted? .......................... 3

    What is the quorum requirement for the meeting? ......................... 3

    Who will count the vote? ................................................ 3

    Is my vote confidential? ................................................ 3

    Who will bear the cost of soliciting votes for the meeting? ............. 4

Board Structure and Compensation ............................................ 5

Directors' Compensation ..................................................... 6

Compensation Table for 1999 ................................................. 6

Proposals To Be Voted On .................................................... 7

    Proposal No. 1 - Election of Directors .................................. 7

    Proposal No. 2 - Ratification of Independent Auditors ................... 11

    Proposal No. 3 - Proposal to Approve an Amendment to the Restated
                     Certificate of Incorporation to Increase the Authorized
                     Common Stock and Change Par Value ...................... 11

Common Stock Ownership of Directors and Executive Officers .................. 12

    Beneficial Ownership Table .............................................. 13

Section 16(a) Beneficial Ownership Reporting Compliance ..................... 14

Transactions with Management ................................................ 14


                                       ii
<PAGE>


Executive Compensation ...................................................... 15

    Summary Compensation Table .............................................. 15

Option Grants in Last Fiscal Year ........................................... 18

Option Exercises and Year-End Option Values ................................. 19

Long-Term Incentive Plan Awards Table ....................................... 20

Estimated Annual Retirement Benefits Table Under Pension Plan ............... 21

Report of the Compensation Committee ........................................ 21

Stock Performance Graph ..................................................... 25

Additional Questions and Information Regarding Access to Future Annual
Reports and Proxy Statements via the Internet and Stockholder Proposals ..... 26

    Does 3M offer stockholders the option of viewing Annual Reports to
    Stockholders and Proxy Statements via the Internet? ..................... 26

    How do I elect this option? ............................................. 26

    What happens if additional proposals are presented at the meeting? ...... 26

    May I propose actions for consideration at next year's annual meeting
    of stockholders or nominate individuals to serve as directors? .......... 26


                                      iii
<PAGE>


                   MINNESOTA MINING AND MANUFACTURING COMPANY
                      3M Center, St. Paul, Minnesota 55144
                                 March 24, 2000

               PROXY STATEMENT FOR ANNUAL MEETING OF STOCKHOLDERS
                       TO BE HELD ON TUESDAY, MAY 9, 2000


     QUESTIONS AND ANSWERS ABOUT THE PROXY MATERIALS AND THE ANNUAL MEETING


        Q: WHY AM I RECEIVING THESE MATERIALS?

        A: The Board of Directors (the "Board") of Minnesota Mining and
Manufacturing Company (sometimes referred to as the "Company" or "3M") is
providing these proxy materials to you in connection with the solicitation by
the Board of proxies to be voted at 3M's Annual Meeting of Stockholders which
will take place on May 9, 2000. You are invited to attend the meeting and are
requested to vote on the proposals described in this proxy statement.


        Q: WHAT INFORMATION IS CONTAINED IN THESE MATERIALS?

        A: The information included in this proxy statement relates to the
proposals to be voted on at the meeting, the voting process, the compensation of
directors and our most highly paid officers, and certain other required
information. Our 1999 Annual Report is enclosed in this mailing and also
available to those accessing the proxy statement via the Internet.


        Q: WHAT PROPOSALS WILL BE VOTED ON AT THE MEETING?

        A: There are three proposals scheduled to be voted on at the meeting:

           *    The election of directors to the 2003 Class.

           *    Ratification of the appointment of PricewaterhouseCoopers LLP,
                independent auditors, to audit the consolidated financial
                statements of the Company for the year 2000.

           *    Approval of an amendment to the Restated Certificate of
                Incorporation to increase the authorized common stock and
                change par value.


        Q: WHAT IS 3M'S VOTING RECOMMENDATION?

        A: Our Board of Directors recommends that you vote your shares "FOR"
each of the nominees to the Board and "FOR" Proposal No. 2 on ratification of
independent auditors and "FOR" Proposal No. 3 on the amendment to the Restated
Certificate of Incorporation to increase the authorized common stock and change
par value.


        Q: WHAT SHARES OWNED BY ME CAN BE VOTED?

        A: All shares owned by you as of March 10, 2000, the RECORD DATE, may be
voted by you. These shares include those (1) held directly in your name as the
STOCKHOLDER OF RECORD, including shares purchased through 3M's Dividend
Reinvestment Plan and 3M's General Employees Stock Purchase Plan and (2) held
for you as the BENEFICIAL OWNER through a stockbroker, bank, or other nominee,
including those shares acquired through 3M's Voluntary Investment Plan, Employee
Stock Ownership Plan, or Savings Plan.

        Participants in 3M's Voluntary Investment Plan, Employees Stock
Ownership Plan or Savings Plan may direct the trustee how to vote the shares
allocated to the participant's account by following the voting instructions
contained on the proxy card. The trustee of the Employee Stock Ownership Plan
also votes allocated shares of common stock for which it has not received
direction, as well as shares not allocated to individual participant accounts,
in the same proportion as it votes those directed shares for which voting
instructions are received. If voting instructions are invalid or if the proxy
card is not returned by the specified date, the trustee will vote the shares
held in the stockholder's Savings Plan and Voluntary Investment Plan accounts as
directed by the Public Issues Committee of the 3M Board of Directors.


                                       1
<PAGE>


        Q: WHAT IS THE DIFFERENCE BETWEEN HOLDING SHARES AS A STOCKHOLDER OF
RECORD AND AS A BENEFICIAL OWNER?

        A: Most 3M stockholders hold their shares through a stockbroker, bank,
or other nominee rather than directly in their own name. As summarized below,
there are some distinctions between shares held of record and those owned
beneficially:

        *   STOCKHOLDER OF RECORD - If your shares are registered directly in
            your name with 3M's Transfer Agent, Norwest Bank Minnesota, N.A.,
            you are considered, with respect to those shares, the STOCKHOLDER OF
            RECORD and these proxy materials are being sent directly to you by
            3M. As the STOCKHOLDER OF RECORD, you have the right to grant your
            voting proxy directly to 3M or to vote in person at the meeting. 3M
            has enclosed a proxy card for you to use.

        *   BENEFICIAL OWNER - If your shares are held in a stock brokerage
            account or by a bank or other nominee, you are considered the
            BENEFICIAL OWNER of shares held IN STREET NAME and these proxy
            materials are being forwarded to you by your broker or nominee who
            is considered, with respect to those shares, the STOCKHOLDER OF
            RECORD. As the beneficial owner, you have the right to direct your
            broker on how to vote and are also invited to attend the meeting.
            However, since you are not the STOCKHOLDER OF RECORD, you may not
            vote these shares in person at the meeting. Your broker or nominee
            is obligated to provide you with a voting instruction card for you
            to use.


        Q: HOW CAN I VOTE MY SHARES?

        A: Whether you hold shares directly as the stockholder of record or
beneficially in street name, you may vote by granting a proxy or, for shares
held in street name, by submitting voting instructions to your broker or
nominee. In most instances, you will be able to do this over the Internet, by
telephone, or by mail. Please refer to the summary instructions below and those
included on your proxy card or, for shares held in street name, the voting
instruction card included by your broker or nominee.

        *   BY INTERNET--If you have Internet access, you may submit your proxy
            from any location in the world by following the "Vote by Internet"
            instructions on the proxy card.

        *   BY TELEPHONE--If you live in the United States, you may submit your
            proxy by following the "Vote by Phone" instructions on the proxy
            card.

        *   BY MAIL--You may do this by signing your proxy card or, for shares
            held in street name, the voting instruction card included by your
            broker or nominee and mailing it in the enclosed, postage prepaid
            and addressed envelope. If you provide specific voting instructions,
            your shares will be voted as you instruct. If you sign but do not
            provide instructions, your shares will be voted as described below
            in "HOW ARE VOTES COUNTED?"

        Q: CAN I CHANGE MY VOTE?

        A: You may change your proxy instructions at any time prior to the vote
at the Annual Meeting. For shares held directly in your name, you may accomplish
this by granting a new proxy or by attending the Annual Meeting and voting in
person. Attendance at the meeting will not cause your previously granted proxy
to be revoked unless you specifically so request. For shares held beneficially
by you, you may accomplish this by submitting new voting instructions to your
broker or nominee.


        Q: HOW ARE VOTES COUNTED?

        A: In the election of directors, you may vote "FOR" all of the nominees
or your vote may be "WITHHELD" with respect to one or more of the nominees. For
the other proposals, you may vote "FOR," "AGAINST," or "ABSTAIN." If you
"ABSTAIN," it has the same effect as a vote "AGAINST." If you sign your proxy
card or broker voting instruction card with no further instructions, your shares
will be voted in accordance with the recommendations of the Board, except that
any shares you hold in the Employee Stock Ownership Plan, Savings Plan, and
Voluntary Investment Plan will be voted by the trustee as described on page 1 in
"WHAT SHARES OWNED BY ME CAN BE VOTED?"


                                       2
<PAGE>


        Q: WHAT IS THE VOTING REQUIREMENT TO APPROVE EACH OF THE PROPOSALS?

        A: The nominees for election as directors at the Annual Meeting will be
elected by a plurality of the votes of the shares present in person or
represented by proxy at the meeting. The affirmative "FOR" vote of the holders
of a majority of the outstanding shares entitled to vote is required to amend
the Restated Certificate of Incorporation to increase the number of authorized
shares of common stock and change par value. All other proposals require the
affirmative "FOR" vote of a majority of those shares present and entitled to
vote. If you are a BENEFICIAL OWNER and do not provide the STOCKHOLDER OF RECORD
with voting instructions, your shares may constitute BROKER NON-VOTES, as
described in "WHAT IS THE QUORUM REQUIREMENT FOR THE MEETING?" on page 3. In
tabulating the voting result for any particular proposal, shares that constitute
BROKER NON-VOTES are not considered entitled to vote.


        Q: WHAT DOES IT MEAN IF I RECEIVE MORE THAN ONE PROXY OR VOTING
INSTRUCTION CARD?

        A: It means your shares are registered differently or are in more than
one account. Please provide voting instructions for all proxy and voting
instruction cards you receive.


        Q: HOW CAN I OBTAIN AN ADMISSION TICKET FOR THE MEETING?

        A: Two cutout admission tickets are included on the back of this proxy
statement.


        Q: WHERE CAN I FIND THE VOTING RESULTS OF THE MEETING?

        A: We will announce preliminary voting results at the meeting and
publish final results in our quarterly report on Form 10-Q for the second
quarter of 2000. A news release with voting results will be available on our web
site (www.3M.com/profile/pressbox/index.html). Voting results also will be
mailed with dividend checks payable June 12.


        Q: WHAT CLASS OF SHARES IS ENTITLED TO BE VOTED?

        A: Each share of our common stock outstanding as of the close of
business on March 10, 2000, the RECORD DATE, is entitled to one vote at the
Annual Meeting. On February 29, 2000, we had 397,140,724 shares of common stock
issued and outstanding. The 74,875,804 shares of common stock in the Company's
treasury on that date will not be voted.


        Q: WHAT IS THE QUORUM REQUIREMENT FOR THE MEETING?

        A: The quorum requirement for holding the meeting and transacting
business is a majority of the outstanding shares entitled to be voted. The
shares may be present in person or represented by proxy at the meeting. Both
abstentions and broker non-votes are counted as present for the purpose of
determining the presence of a quorum. Generally, broker non-votes occur when
shares held by a broker for a beneficial owner are not voted with respect to a
particular proposal because (1) the broker has not received voting instructions
from the beneficial owner and (2) the broker lacks discretionary voting power to
vote such shares.


        Q: WHO WILL COUNT THE VOTE?

        A: Representatives of Norwest Bank Minnesota, N.A., 3M's transfer agent,
will tabulate the votes and act as the inspector of election.


        Q: IS MY VOTE CONFIDENTIAL?

        A: The Company's Board of Directors has adopted a policy that all
stockholder proxies, ballots, and tabulations that identify stockholders are to
be maintained in confidence. No such document shall be available for
examination, nor shall the identity and vote of any stockholder be disclosed,
except as may be necessary to meet applicable legal requirements and to allow
the inspectors of election to certify the results of the stockholder vote. The
policy also provides that inspectors of election for stockholder votes shall be
independent and shall not be employees of the Company. Occasionally,
stockholders provide written comments on their proxy card that may be forwarded
to 3M management.


                                       3
<PAGE>


        Q: WHO WILL BEAR THE COST OF SOLICITING VOTES FOR THE MEETING?

        A: 3M will pay the entire cost of preparing, assembling, printing,
mailing, and distributing these proxy materials, except that certain expenses
for Internet access will be incurred by you if you choose to access the proxy
materials and/or vote over the Internet. In addition to the mailing of these
proxy materials, the solicitation of proxies or votes may be made in person, by
telephone, or by electronic communication by our directors, officers, and
employees, who will not receive any additional compensation for such
solicitation activities. We also have hired Georgeson Shareholder
Communications, Inc. to assist us in the distribution of proxy materials and the
solicitation of votes. We will pay Georgeson Shareholder Communications, Inc. a
fee of $15,000 plus expenses for these services. We will also reimburse
brokerage houses and other custodians, nominees, and fiduciaries for their
reasonable out-of-pocket expenses for forwarding proxy and solicitation
materials to beneficial owners of stock.

        ADDITIONAL QUESTIONS AND INFORMATION REGARDING ACCESS TO FUTURE ANNUAL
REPORTS AND PROXY STATEMENTS VIA THE INTERNET AND STOCKHOLDER PROPOSALS MAY BE
FOUND ON PAGE 26.


                                       4
<PAGE>


BOARD STRUCTURE AND COMPENSATION

        Our Board has ten directors and the following four committees: Audit,
Board Organization, Compensation, and Public Issues. The membership during 1999
and the function of each committee are described below.

        During 1999, the Board of Directors met six times and various Committees
of the Board met as indicated below. With the exception of one director, who was
not able to attend the Board and Committee meetings on February 8, 1999, each
director attended all of the Board meetings and the meetings of Board Committees
on which the director served.

AUDIT COMMITTEE

        Members: F. Alan Smith (Chair), Edward R. McCracken, Aulana L. Peters,
                 and Louis W. Sullivan.

        Number of meetings in 1999: Four

        Functions:

            *   Reviews the Company's financial reporting process, internal
                control systems, and the audit efforts of the Company's
                independent and internal auditors;

            *   Recommends the appointment of independent auditors, subject to
                stockholder ratification, and oversees their independence;

            *   Reviews with the independent auditors the scope of the annual
                audit, including fees and staffing, and nonaudit services
                provided by the auditors;

            *   Reviews findings and recommendations of the independent auditors
                and management's response to the recommendations of the
                independent auditors; and

            *   Reviews compliance with the Company's business conduct policies.

BOARD ORGANIZATION COMMITTEE

        Members: Livio D. DeSimone (Chair), Edward A. Brennan, Edward R.
                 McCracken, Aulana L. Peters, and Rozanne L. Ridgway.

        Number of meetings in 1999: Two.

        Functions:

            *   Selects and recommends candidates to the Board of Directors to
                be submitted for election at the Annual Meeting. The Board of
                Directors has adopted criteria with respect to its membership
                and the Committee will consider candidates recommended by
                stockholders or others in light of these criteria. Subject to
                the notice requirements in the Bylaws, a stockholder may submit
                the name of a proposed nominee by writing to the Office of the
                Secretary, Minnesota Mining and Manufacturing Company, 3M
                Center, St. Paul, Minnesota 55144;

            *   Reviews and makes recommendations to the Board of Directors
                concerning the composition and size of the Board and its
                Committees, frequency of meetings, directors' fees, and similar
                subjects;

            *   Reviews and makes recommendations concerning retirement and
                tenure policy for Board membership, recommends proxies for
                meetings at which directors are elected, audits programs for
                senior management succession; and

            *   Deals with corporate governance issues.


                                       5
<PAGE>


COMPENSATION COMMITTEE

        Members: Edward A. Brennan (Chair), Allen E. Murray, Rozanne L. Ridgway,
                 and Frank Shrontz.

        Number of meetings in 1999: Four.

        Functions:

            *   Reviews compensation policies of the Company to ensure they
                provide appropriate motivation for corporate performance and
                increased shareholder value; and

            *   Determines compensation policy for executive officers and
                approves compensation changes for senior executive officers, and
                administers management stock option plans and performance based
                executive compensation plans.

PUBLIC ISSUES COMMITTEE

        Members: Frank Shrontz (Chair), Ronald O. Baukol, Allen E. Murray, F.
                 Alan Smith, and Louis W. Sullivan. Frank Shrontz became Chair
                 of the Committee upon Ronald A. Mitsch's retirement from the
                 Board in May 1999. Ronald O. Baukol joined the Committee in May
                 1999.

        Number of meetings in 1999: Two.

        Functions:

            *   Reviews public policy and social trends affecting the Company;

            *   Monitors the Company's corporate citizenship activities; and

            *   Evaluates Company policies and programs to enable the Company to
                respond appropriately to its social responsibilities and the
                public interest in the conduct of its businesses, including
                activities related to the improvement of the environment and
                community relations.


DIRECTORS' COMPENSATION

        The following table provides information on 3M's compensation and
reimbursement practices during 1999 for nonemployee directors. Directors who are
employed by 3M, Mr. DeSimone and Mr. Baukol, do not receive any compensation for
their Board activities.

COMPENSATION TABLE FOR 1999

Annual Director Retainer ........................................   $80,000
Minimum Percentage of Annual Retainer to be Paid in 3M Stock ....   68.8%
Board Meeting Attendance Fees ...................................   $1,800
Committee Meeting Attendance Fees ...............................   $1,200
Additional Retainer for Committee Chair .........................   $5,500
Reimbursement for Expenses Attendant to Board Membership ........   Yes

        Pursuant to the terms of the Company's 1992 Directors Stock Ownership
Program, nonemployee directors received $55,000 of the total annual retainer of
$80,000 in common stock of the Company. Nonemployee directors may elect to defer
payment of all or a portion of the foregoing fees payable in cash through a
deferred cash or common stock equivalents account, and fees payable in stock
through a deferred common stock equivalents account. The nonemployee directors
also may elect to receive common stock of the Company, on a current basis, at
current fair market value, in lieu of cash retainer and meeting fees.
Information regarding accumulated deferred stock is set forth in the section
entitled "Common Stock Ownership of Directors and Executive Officers" on page
12.


                                       6
<PAGE>


                            PROPOSALS TO BE VOTED ON

                                 PROPOSAL NO. 1
                              ELECTION OF DIRECTORS

NUMBER OF NOMINEES AND CLASSIFICATION

        The Restated Certificate of Incorporation divides the Board into three
classes. Four directors have terms of office that expire at the 2000 Annual
Meeting, and two of the four directors are standing for reelection for a
three-year term as members of the 2003 Class. These are Ronald O. Baukol and
Aulana L. Peters. Allen E. Murray and Edward R. McCracken, the third and fourth
directors in the 2000 Class, will retire from the Board at the conclusion of the
Annual Meeting and are not standing for reelection. W. George Meredith elected
to take early retirement and has resigned from the Board effective August 1999.
The three incumbent directors in the 2001 Class are continuing to serve until
the 2001 Annual Meeting. The three incumbent directors in the 2002 Class are
continuing to serve until the 2002 Annual Meeting.

        [In order to balance membership in each of the three classes of
Directors, two new nominees are standing for election to the 2003 Class. The new
nominees are [       ]

        All nominees for election to the Board of Directors to the 2003 Class at
the 2000 Annual Meeting will be elected for a term of three years and shall
serve until their terms expire at the 2003 Annual Meeting or until their
successors are duly elected and have been qualified.

        The persons named as proxies intend to vote the proxies for the election
of the [four] nominees to the Board of Directors. If any of the nominees should
be unavailable to serve as a director, an event which is not anticipated, the
persons named as proxies reserve full discretion to vote for any other persons
who may be nominated.

INFORMATION AS TO NOMINEES AND INCUMBENT DIRECTORS

        The nominees and incumbent directors, their age, principal occupation or
position with the Company (shown in italics), experience, and the year first
elected as a director, are shown on the following pages.

        None of the nominees or incumbent directors is related to any other
nominee or to any executive officer of the Company or its subsidiaries by blood,
marriage, or adoption. Except for current employees of the Company, no nominee
or incumbent director has been an employee of the Company within the past five
years.

        During 1999, the Company retained the law firm of Gibson, Dunn &
Crutcher LLP, with regard to various legal matters. Mrs. Peters is a partner in
this firm.

        THE BOARD OF DIRECTORS RECOMMENDS A VOTE "FOR" THE ELECTION TO THE BOARD
OF EACH OF THE FOLLOWING NOMINEES. PROXIES SOLICITED BY THE BOARD OF DIRECTORS
WILL BE VOTED "FOR" EACH OF THE NOMINEES UNLESS A CONTRARY VOTE IS SPECIFIED.


                                       7
<PAGE>


NOMINEES FOR ELECTION TO THE 2003 CLASS:

[PHOTO] NEW NOMINEE


[PHOTO] RONALD O. BAUKOL, 62, EXECUTIVE VICE PRESIDENT, INTERNATIONAL
        OPERATIONS; MEMBER OF THE PUBLIC ISSUES AND FINANCE COMMITTEES. Mr.
        Baukol joined 3M as an engineer in the Medical Products Division
        laboratory in 1966 and served there until 1970, at which time he took
        leave to serve as a White House Fellow and later with the Environmental
        Protection Agency in Washington, D.C. Upon his return to 3M in 1972, he
        served in several general management capacities in 3M's health care
        businesses until being appointed General Manager of Riker Laboratories,
        Inc. in 1982. In 1984, Mr. Baukol was appointed Vice President and
        General Manager, Riker Laboratories, Inc. and in 1986, Chairman and
        Chief Executive, 3M United Kingdom PLC. He was elected Group Vice
        President, Pharmaceutical and Dental Products Group in 1989; Group Vice
        President, Medical Products Group in 1990; Vice President, Asia Pacific
        in 1991; Vice President, Asia Pacific, Canada and Latin America in 1994;
        and Executive Vice President, International Operations in 1995. Mr.
        Baukol is a director of Graco, Inc. and The Toro Company. He is Vice
        Chairman of the United States Council for International Business, a
        Governor of the Iowa State University Foundation, and a member of the
        International Programs Advisory Council, Carlson School of Management,
        University of Minnesota.

        DIRECTOR SINCE 1996


[PHOTO] NEW NOMINEE


[PHOTO] AULANA L. PETERS, 58, PARTNER, GIBSON, DUNN & CRUTCHER LLP, A LAW FIRM,
        LOS ANGELES, CALIFORNIA; MEMBER OF THE AUDIT AND BOARD ORGANIZATION
        COMMITTEES. Mrs. Peters joined Gibson, Dunn & Crutcher as an Associate
        in 1973. In 1980, she was named a Partner in the firm and continued in
        the practice of law until 1984, when she accepted an appointment as
        Commissioner of the Securities and Exchange Commission. In 1988, after
        serving four years as Commissioner, she returned to the private practice
        of law as Partner in the Gibson, Dunn & Crutcher firm. Mrs. Peters is a
        member of the American and Los Angeles County Bar Associations, the
        Regulatory Advisory Committee of the New York Stock Exchange, the
        Financial Accounting Standards Board Steering Committee of the Financial
        Reporting Project, Public Oversight Board Panel on Audit Effectiveness,
        and the Legal Advisory Panel for the National Association of Securities
        Dealers. She is also a director of Merrill Lynch & Co., Inc., Northrop
        Grumman Corp., and Callaway Golf Company.

        DIRECTOR SINCE 1990


                                        8
<PAGE>


INCUMBENT DIRECTORS IN THE 2002 CLASS:

[PHOTO] ROZANNE L. RIDGWAY, 64, FORMER ASSISTANT SECRETARY OF STATE FOR EUROPE
        AND CANADA; MEMBER OF THE BOARD ORGANIZATION AND COMPENSATION
        COMMITTEES. Ambassador Ridgway served in the U.S. Foreign Service from
        1957 to 1989, including assignments as Ambassador for Oceans and
        Fisheries Affairs, Ambassador to Finland and to the German Democratic
        Republic, and from 1985 and until her retirement in 1989, Assistant
        Secretary of State for European and Canadian Affairs. Ambassador Ridgway
        served as President until 1993 and Co-Chair until mid-1996 of the
        Atlantic Council of the United States, an association to promote better
        understanding of major foreign policy issues. She is a director of Bell
        Atlantic Corporation, The Boeing Company, Emerson Electric Co., Nabisco,
        Sara Lee Corporation, and Union Carbide Corporation. She is also chair
        of The Baltic-American Enterprise Fund.

        DIRECTOR SINCE 1989


[PHOTO] FRANK SHRONTZ, 68, CHAIRMAN EMERITUS, THE BOEING COMPANY, MANUFACTURER
        AND SELLER OF AIRCRAFT AND RELATED PRODUCTS; CHAIRMAN OF THE PUBLIC
        ISSUES COMMITTEE AND MEMBER OF THE COMPENSATION COMMITTEE. Mr. Shrontz
        joined The Boeing Company in 1958. In 1973, he left Boeing to serve as
        Assistant Secretary of the Air Force and became Assistant Secretary of
        Defense in 1976. In 1977, Mr. Shrontz returned to Boeing. After several
        assignments, he was named President and a member of the Board of
        Directors of Boeing in 1985. In 1986, he was named Chief Executive
        Officer and, in 1988, Chairman of the Board. Mr. Shrontz retired from
        Boeing in 1997. Mr. Shrontz is a director of Boise Cascade Corporation,
        Chevron Corporation, and a citizen regent on the Smithsonian
        Institution's Board of Regents. He is also a member of The Business
        Council.

        DIRECTOR SINCE 1992


[PHOTO] LOUIS W. SULLIVAN, 66, PRESIDENT, MOREHOUSE SCHOOL OF MEDICINE, ATLANTA,
        GEORGIA; MEMBER OF THE AUDIT AND PUBLIC ISSUES COMMITTEES. Since
        completion of his medical training, Dr. Sullivan has held both
        professional and administrative positions in health care facilities and
        medical training institutions. He joined Morehouse College as Professor
        of Biology and Medicine in 1975 and was the founding dean and director
        of the Medical Education Program at the college. He was named President
        of Morehouse School of Medicine in 1981. He served as Secretary, United
        States Department of Health and Human Services, from 1989 to 1993. He
        returned to Morehouse School of Medicine in 1993. Dr. Sullivan is a
        director of Bristol-Myers Squibb Company, CIGNA Corporation, Equifax,
        Inc., General Motors Corporation, Georgia-Pacific Corporation, and
        Household International. He is also a director of the Boy Scouts of
        America and a trustee of the Little League Foundation.

        DIRECTOR SINCE 1993


                                       9
<PAGE>


INCUMBENT DIRECTORS IN THE 2001 CLASS:

[PHOTO] EDWARD A. BRENNAN, 66, RETIRED CHAIRMAN OF THE BOARD, PRESIDENT, AND
        CHIEF EXECUTIVE OFFICER, SEARS, ROEBUCK AND CO., A DIVERSIFIED COMPANY
        ENGAGED IN MERCHANDISING, CHICAGO, ILLINOIS; CHAIRMAN OF THE
        COMPENSATION COMMITTEE AND MEMBER OF THE BOARD ORGANIZATION COMMITTEE.
        Mr. Brennan joined Sears in 1956. He was an Executive Vice President,
        1978 to 1980; President and Chief Operating Officer for merchandising,
        1980; Chairman and Chief Executive Officer, Sears Merchandise Group,
        1981 to 1984; President and Chief Operating Officer, 1984 through 1985;
        and was elected Chairman of the Board and Chief Executive Officer of
        Sears, Roebuck and Co. in 1986. Mr. Brennan retired from Sears in 1995.
        He is a director of The Allstate Corporation, Morgan Stanley Dean Witter
        & Co., AMR Corporation, Unicom Corporation, Dean Foods Company, and The
        SABRE Group Holdings, Inc. He also is Chairman of the Board of Trustees
        of DePaul University and Chairman of the Board of Trustees of
        Rush-Presbyterian-St. Luke's Medical Center, and a member of The
        Business Council.

        DIRECTOR SINCE 1986


[PHOTO] LIVIO D. DESIMONE, 63, CHAIRMAN OF THE BOARD AND CHIEF EXECUTIVE
        OFFICER; CHAIRMAN OF THE BOARD ORGANIZATION AND FINANCE COMMITTEES. Mr.
        DeSimone joined 3M as a process engineer with 3M Canada in 1957. He
        served in various international and subsidiary capacities until his
        appointment in 1971 as Managing Director of 3M Brazil. In 1975, he
        served as General Manager, Building Service and Cleaning Products
        Division, before being appointed Area Vice President, Latin America. Mr.
        DeSimone was elected Vice President, Abrasives, Adhesives, Building
        Service and Chemicals Group in 1979; Executive Vice President, Life
        Sciences Sector in 1981; Executive Vice President, Industrial and
        Consumer Sector in 1984; Executive Vice President, Industrial and
        Electronic Sector in 1987; Executive Vice President, Information and
        Imaging Technologies Sector in 1989; and Chairman of the Board and Chief
        Executive Officer in 1991. He is a director of Cargill, Incorporated,
        General Mills, Inc., Target Corp., and Vulcan Materials Company. He is
        also a director of National Junior Achievement, Inc., a trustee of the
        University of Minnesota Foundation, and a member of the Board of
        Governors of The Nature Conservancy.

        DIRECTOR SINCE 1986


[PHOTO] F. ALAN SMITH, 68, CHAIRMAN OF ADVANCED ACCESSORY SYSTEMS, INC.,
        SUPPLIER OF AUTOMOTIVE ACCESSORIES; CHAIRMAN OF MACKIE AUTOMOTIVE
        SYSTEMS, AUTOMOTIVE SEQUENCING AND SUB-ASSEMBLY COMPANY; RETIRED
        EXECUTIVE VICE PRESIDENT AND DIRECTOR, GENERAL MOTORS CORPORATION,
        MANUFACTURER AND SELLER OF AUTOMOBILES AND AUTOMOTIVE PRODUCTS, DETROIT,
        MICHIGAN; CHAIRMAN OF THE AUDIT COMMITTEE AND MEMBER OF THE PUBLIC
        ISSUES COMMITTEE. Mr. Smith was a director of General Motors Corporation
        from 1981 until his retirement in 1992. He joined General Motors in
        1956. He was Treasurer, 1973 to 1975; Vice President, Finance, 1975 to
        1978; Vice President of General Motors Corporation and President and
        General Manager of General Motors of Canada Limited, 1978 to 1981;
        Executive Vice President, Finance, 1981 to 1988. In 1988, he was elected
        Executive Vice President, Operating Staffs and Public Affairs and
        Marketing Staffs. He is a director of TransPro, Inc. and a trustee of
        the Florida Institute of Technology.

        DIRECTOR SINCE 1986


                                       10
<PAGE>


                                 PROPOSAL NO. 2

                      RATIFICATION OF INDEPENDENT AUDITORS

        The Audit Committee recommended and the Board of Directors appointed the
firm of PricewaterhouseCoopers LLP, independent auditors, to audit the
consolidated financial statements of the Company and its subsidiaries for the
year 2000. If the stockholders do not ratify the selection of
PricewaterhouseCoopers LLP, the Board of Directors will reconsider the
selection.

        PricewaterhouseCoopers LLP has audited the Company's consolidated
financial statements since 1975. The firm has offices and affiliates in most
localities throughout the world where the Company has operations. Audit services
provided by the firm in 1999 included: audit of consolidated financial
statements of the Company and its subsidiaries; limited reviews of interim
reports; reviews of filings with the Securities and Exchange Commission;
consultations on matters related to accounting and financial reporting; audits
of statutory financial statements for certain foreign subsidiaries; and audits
of the financial statements of the Company's benefit plans.

        PricewaterhouseCoopers LLP also provided a number of nonaudit services
during 1999, all of which were approved and reviewed by the Audit Committee.

        A representative of PricewaterhouseCoopers LLP is expected to be present
at the stockholders meeting and available to respond to appropriate questions
and will be given an opportunity to make a statement, if the representative
chooses to do so.

        THE BOARD OF DIRECTORS RECOMMENDS A VOTE "FOR" THE RATIFICATION OF THE
APPOINTMENT OF PRICEWATERHOUSECOOPERS LLP, INDEPENDENT AUDITORS, TO AUDIT THE
CONSOLIDATED FINANCIAL STATEMENTS OF THE COMPANY FOR 2000. PROXIES SOLICITED BY
THE BOARD OF DIRECTORS WILL BE VOTED "FOR" RATIFICATION UNLESS A CONTRARY VOTE
IS SPECIFIED.

                                 PROPOSAL NO. 3
  PROPOSAL TO APPROVE AN AMENDMENT TO THE RESTATED CERTIFICATE OF INCORPORATION
          TO INCREASE THE AUTHORIZED COMMON STOCK AND CHANGE PAR VALUE

        The Board of Directors believes that it is in the Company's best
interest to amend the Company's Restated Certificate of Incorporation to
increase the number of shares of common stock the Company is authorized to issue
to 1.5 billion, and to change the par value of the Company's common stock to
$0.01. The change to "$0.01 par value" common stock will have no impact on value
of the Company's stock or the rights of its stockholders. If the proposed
amendment is approved by the stockholders, the change in par value will,
however, enable the Company to realize significant reductions in the amount of
the filing fees charged by various states for filing its amended Restated
Certificate of Incorporation reflecting the increase in authorized shares of
common stock.

        As of February 29, 2000, 472,016,528 shares of common stock were issued,
including 397,140,724 outstanding shares and 74,875,804 shares held by the
Company in treasury. Approximately 31,000,000 shares were under option to
participants in the General Employees Stock Purchase Plan and Management Stock
Ownership Programs. As of the close of business on February 29, 2000, none of
the Company's 10,000,000 shares of authorized preferred stock have been issued.

        The Board of Directors has concluded that increasing the number of
authorized shares of common stock will give the Company the ability to respond
to growth of the Company's business that may occur in the future and to react
quickly to today's competitive, fast-changing environment. Since 1920, the
Company effected seven 2-for-1, one 3-for-1, and one 4-for-1 stock splits
following significant increases in the market price for 3M common stock.
Although the Board has not determined when and under what conditions it would
consider a stock split, the Board believes that the increase in the number of
authorized shares will provide flexibility in considering future stock splits
(effected in the form of a stock dividend) without the expense of a special
stockholder meeting or waiting until the next Annual Meeting. Although the
Company has no specific plans or commitments for the issuance of any of the
additional shares that would be authorized by the amendment, the Board of
Directors also believes that an increase in the authorized shares is desirable
because it would provide the Company flexibility for other


                                       11
<PAGE>


actions the Company might wish to take. These actions include employee benefit
plans, paying for acquisitions with stock of the Company, and equity offerings
to raise capital.

        Accordingly, at its meeting held on February 14, 2000, the Board of
Directors unanimously adopted a resolution proposing that an amendment to
paragraph A of Article FOURTH of the Company's Restated Certificate of
Incorporation (and a conforming change to the third sentence of paragraph A of
Article TENTH) be presented to the stockholders at the Annual Meeting for their
approval. Such amendment would change the number of authorized shares of common
stock and the par value and convert the issued shares of stock to shares with
the new par value. As amended, paragraph A of Article FOURTH would read in its
entirety as follows:

                "FOURTH: A. The total number of shares of all classes of stock
        which this Corporation shall have authority to issue is 1,510,000,000
        consisting of 10,000,000 shares of preferred stock without par value and
        1,500,000,000 shares of common stock of a par value of $0.01 per share.
        Upon the effectiveness of the amendment of this Article FOURTH reducing
        the par value of the common stock to $0.01, each outstanding share of
        common stock shall be reclassified and changed into one share of common
        stock, par value $0.01 per share."

        If the amendment is approved by stockholders, the amendment would also
change the reference to par value in the third sentence of paragraph A of
Article TENTH of the Restated Certificate of Incorporation to $0.01 per share.

        If the proposed amendment is approved, the Board of Directors may issue
such shares without further stockholder action except as required by law or
applicable stock exchange requirements. The additional shares, when issued, will
have the same voting and other rights as the Company's presently authorized
common stock. The holders of common stock do not have preemptive rights to
subscribe for additional shares of common stock.

        Although the Board has no present intention of issuing any additional
shares of common stock as an anti-takeover step, the issuance of additional
common shares could be used to create impediments to or otherwise discourage
persons attempting to gain control of the Company. For example, the issuance of
additional shares could be used in a manner that would dilute the voting power
of shares then outstanding. Shares of common stock could also be issued to
persons or entities who would support the Board of Directors in opposing a
takeover bid which the Board determines to be not in the best interests of the
Company, its stockholders, and its employees.

        The affirmative "FOR" vote by the holders of a majority of the
outstanding common stock entitled to vote is required to approve this amendment
to the Company's Restated Certificate of Incorporation.

        If the stockholders at the Annual Meeting approve the amendment, it will
become effective upon the filing of a Certificate of Amendment in accordance
with the General Corporation Law of Delaware.

        THE BOARD OF DIRECTORS RECOMMENDS A VOTE "FOR" THE PROPOSAL TO AMEND
PARAGRAPH A OF ARTICLE FOURTH AND THE THIRD SENTENCE OF PARAGRAPH A OF ARTICLE
TENTH OF THE RESTATED CERTIFICATE OF INCORPORATION. PROXIES SOLICITED BY THE
BOARD OF DIRECTORS WILL BE VOTED FOR THIS PROPOSAL UNLESS A CONTRARY VOTE IS
SPECIFIED.

COMMON STOCK OWNERSHIP OF DIRECTORS AND EXECUTIVE OFFICERS

        The following table sets forth information concerning beneficial
ownership of the Company's common stock as of February 29, 2000, for: (a) each
director and the nominee for director; (b) the three most highly compensated
executive officers who are not also directors; and (c) the directors and
executive officers as a group. Unless otherwise indicated, each person has sole
investment and voting power (or shares such powers with his or her spouse) with
respect to the shares set forth in the following table.

        The number of shares beneficially owned by each director or executive
officer is determined under the rules of the Securities and Exchange Commission,
and the information is not necessarily indicative of beneficial ownership for
any other purpose. Under such rules, beneficial ownership includes any shares as
to which the individual has the sole or shared voting power or investment power
and also any


                                       12
<PAGE>


shares which the individual has the right to acquire as of April 29, 2000. (60
days after February 29, 2000, through the exercise of any stock option or other
right. Options exercisable within 60 days after February 29, 2000, are shown
separately.)

                           BENEFICIAL OWNERSHIP TABLE

<TABLE>
<CAPTION>
- -----------------------------------------------------------------------------------------------------------
                                     COMMON STOCK
                                     BENEFICIALLY          OPTIONS             SHARES HELD AS
NAME AND PRINCIPAL POSITION            OWNED (1)        EXERCISABLE (2)      DEFERRED STOCK (3)      TOTAL
- ---------------------------          -------------      ---------------      ------------------      -----
<S>                                    <C>                 <C>                     <C>               <C>
[          ], Nominee
Edward A. Brennan, Director              4,817                  --                 11,198            16,015

[          ], Nominee                        0                                          0                 0

Edward R. McCracken, Director            2,820                  --                  3,106             5,926

Allen E. Murray, Director                3,065                  --                 16,291            19,356

Aulana L. Peters, Director                 865                  --                 11,095            11,960

Rozanne L. Ridgway, Director             1,307                  --                 13,283            14,590

Frank Shrontz, Director                  3,031                  --                  6,808             9,839

F. Alan Smith, Director                  5,615                  --                 14,403            20,018

Louis W. Sullivan, Director              1,761                  --                  4,486             6,247

Livio D. DeSimone,
  Chairman of the Board and
  Chief Executive Officer              200,084             433,654                     --           633,738

Ronald O. Baukol, Director and
  Executive Vice President              41,966             114,092                     --           156,058

Giulio Agostini,
  Senior Vice President                 31,724             131,237                     --           162,961

John W. Benson,
  Executive Vice President              27,074              36,128                     --            63,202

Raymond C. Richelsen,
  Executive Vice President              34,226              60,827                     --            95,053

All Directors and Executive
  Officers as a Group
  (25 persons) (4)                     602,170           1,339,161                                1,941,331
- -----------------------------------------------------------------------------------------------------------
</TABLE>

(1) "Shares Held" include: stock held in joint tenancy, stock owned as tenants
in common, stock owned or held by spouse or other members of the nominee's
household, and stock in which the nominee either has or shares voting and/or
investment power, even though the nominee disclaims any beneficial interest in
such stock. Options exercisable within 60 days after February 29, 2000, are
shown separately. The "shares held" include shares of Profit Sharing Stock held
by the Company and subject to forfeiture, as more fully described in footnote 3
on page 16 of this proxy statement.

(2) Option prices for these shares range from $38.63 to $93.35 per share.


                                       13
<PAGE>


(3) "Shares Held as Deferred Stock" by nonemployee directors represent the
number of shares of the Company's common stock, as of February 29, 2000, which
the directors will receive upon termination of membership on the Board of
Directors for any reason. These shares result from the voluntary election by the
nonemployee directors to defer the payment of directors' fees otherwise payable
in cash into such deferred stock. No shares of common stock have as yet been
issued, and the directors have neither voting nor investment powers in these
shares of deferred stock.

(4) All directors and executive officers as a group owned beneficially less than
one-half of one percent (0.5%) of the outstanding common stock of the Company.

SECTION 16(a) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE

        Section 16(a) of the Securities Exchange Act of 1934 requires our
directors and executive officers to file with the Securities Exchange Commission
reports regarding their ownership and changes in ownership of our stock. 3M
believes that during 1999, its directors and executive officers complied with
all Section 16(a) filing requirements with the following exceptions (1) one late
report filed by John W. Benson, Executive Vice President, Health Care Markets,
with respect to a gift of shares to charity and his children; (2) one late
report filed by Raymond C. Richelsen, Executive Vice President, Transportation,
Graphics and Safety Markets, with respect to a gift of shares to charity; (3)
one late report filed by W. George Meredith, former Director and Executive Vice
President, Corporate Services and Supply Chain Management, with respect to an
exercise of a stock option; and (4) one late report filed by David W. Powell,
Vice President, Marketing, with respect to amended Form 3 to add additional
shares held in street name to the initial Form 3. In making this statement, 3M
has relied upon the written representations of its directors and officers.

TRANSACTIONS WITH MANAGEMENT

        During 1999, nine executive officers had loans outstanding with the
Eastern Heights Bank, a subsidiary of the Company. These loans were made in the
ordinary course of business on substantially the same terms, including interest
rates and collateral, as those prevailing at the time for comparable
transactions with other persons of comparable circumstances and did not involve
more than normal risk of collectibility or present other unfavorable features.
In 1999, the Company sold Eastern Heights Bank to Norwest Bank Minnesota.


                                       14
<PAGE>


EXECUTIVE COMPENSATION

        The following table shows compensation received by 3M's Chief Executive
Officer and its four other most highly paid executive officers for 1999, 1998,
and 1997.

                           SUMMARY COMPENSATION TABLE

<TABLE>
<CAPTION>
- -----------------------------------------------------------------------------------------------------------------------------------
                                                                                     LONG-TERM COMPENSATION(1)
                                                                             -----------------------------------------
                                              ANNUAL COMPENSATION                         AWARDS             PAYOUTS
                                      -------------------------------------  ---------------------------   -----------
                                                                                                           PERFORMANCE
                                                    PROFIT                    PROFIT SHARING     OPTIONS    UNIT PLAN
                                                   SHARING     OTHER ANNUAL  STOCK (RESTRICTED   GRANTED      (LTIP)    ALL OTHER
                                       SALARY    CASH (BONUS)  COMPENSATION    STOCK AWARDS)    NUMBER OF    PAYOUTS   COMPENSATION
NAME AND PRINCIPAL POSITION   YEAR     ($)(1)       ($)(2)        ($)(4)         ($)(2)(3)      SHARES(5)    ($)(6)       ($)(7)
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                           <C>     <C>           <C>            <C>            <C>            <C>        <C>          <C>
Livio D. DeSimone,            1999    1,047,600     947,502        81,318         774,698        155,456    1,336,500    169,956
                              -----------------------------------------------------------------------------------------------------
  Chairman of the Board and   1998    1,047,600     669,341        60,533         547,268        212,890      774,900    155,518
                              -----------------------------------------------------------------------------------------------------
  Chief Executive Officer     1997    1,047,600     551,270        95,298         574,799        160,897      777,700    162,429
- -----------------------------------------------------------------------------------------------------------------------------------
Ronald O. Baukol,             1999      521,700     423,918            --         129,447         52,780      549,450     53,015
                              -----------------------------------------------------------------------------------------------------
  Executive Vice President    1998      521,700     299,466            --          91,440         47,916      318,570     36,105
                              -----------------------------------------------------------------------------------------------------
                              1997      468,900     314,531        50,548          96,040         37,662       95,950     41,718
- -----------------------------------------------------------------------------------------------------------------------------------
Giulio Agostini,              1999      518,400     408,545        50,586         199,668         22,600      356,400     62,306
                              -----------------------------------------------------------------------------------------------------
  Senior Vice President       1998      518,400     288,608            --         141,046         32,889      206,640     54,054
                              -----------------------------------------------------------------------------------------------------
                              1997      398,400     303,126        67,221         148,142         15,000      242,400     54,056
- -----------------------------------------------------------------------------------------------------------------------------------
John W. Benson,               1999      437,700     332,339            --          48,137         45,811      141,075     30,641
                              -----------------------------------------------------------------------------------------------------
  Executive Vice President    1998      409,650     212,841            --          16,080         28,398       81,795     27,216
                              -----------------------------------------------------------------------------------------------------
                              1997      298,000     193,761            --               0         19,660       55,550     31,351
- -----------------------------------------------------------------------------------------------------------------------------------
Raymond C. Richelsen,         1999      437,700     331,287        54,289          49,274         53,395      141,075     44,386
                              -----------------------------------------------------------------------------------------------------
  Executive Vice President    1998      416,400     213,092            --          16,458         30,943       81,795     42,065
                              -----------------------------------------------------------------------------------------------------
                              1997      310,260     199,283            --               0         31,856       95,950     46,877
- -----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

(1) The amounts shown in the Summary Compensation Table do not include amounts
expensed for financial reporting purposes under the Company's pension plan. This
plan is a defined benefit plan. The amounts shown in the table do, however,
include those amounts voluntarily deferred by the named individuals under the
Company's Deferred Compensation Plan. The Deferred Compensation Plan allows
management personnel to defer portions of current base salary, profit sharing,
and performance unit compensation earned during the year.

(2) The amounts shown under the headings "Profit Sharing Cash (Bonus)" and
"Profit Sharing Stock (Restricted Stock Awards)" are payments received under the
Profit Sharing Plan. The terms "(Bonus)" and "(Restricted Stock Awards)" are
included to satisfy the requirements of the Securities and Exchange Commission
("SEC"). These payments are based upon the Company's performance and are
variable in accordance with a predetermined formula. The Compensation Committee
does not view these payments as bonus payments or restricted stock awards as
these terms are most often used. The Committee views bonus plans as plans which
provide for annual (as opposed to quarterly) payments from a pool rather than
based on a strict formula related to earnings per share. Restricted stock awards
are generally outright grants of stock as opposed to payment in the form of
stock held in the custody of the Company (restricted period) in lieu of cash
under a formula-based profit sharing plan.

        Generally, profit sharing is paid in cash; however, senior executive
management, as determined by the Compensation Committee, receive a portion of
their profit sharing in shares of the Company's common stock (see footnote 3 on
page 16).

        The Company's Profit Sharing Plan provides for quarterly payments based
upon the number of shares of profit sharing assigned to a participant,
multiplied by an amount based on economic profit. Economic profit is defined as
quarterly net operating income minus a capital charge, and emphasizes the
effective use of working capital.

        The number of profit sharing shares awarded to the individuals named is
determined by the Compensation Committee and is intended to reflect the level of
responsibility of the respective individual. Profit sharing payments are subject
to limitations when individual amounts exceed specified relationships to base
salary. Approximately 15,300 employees currently participate in profit sharing,
including the five individuals in the Summary Compensation Table.


                                       15
<PAGE>


(3) The amount shown under the heading "Profit Sharing Stock (Restricted Stock
Awards)" represents the portion of profit sharing issued as common stock to the
named individuals, valued at 100 percent of the fair market value of the
Company's common stock at the end of the quarterly profit sharing performance
period. The number of shares is determined by the Company's quarterly economic
profit performance. However, payment is deferred and conditional upon continued
employment by the Company. Therefore, pursuant to SEC rules, it is included
under the headings of "Long-Term Compensation."

        The shares are held in the custody of the Company for a period of three
years or until age 65, whichever occurs first. Any termination of employment,
prior to that time, without the consent of the Compensation Committee or the
Board of Directors, other than upon death or permanent disability, will result
in forfeiture of the Profit Sharing Stock. The recipient is entitled to receive
dividends and vote these shares in the same manner as any other holder of the
Company's common stock during the period of custody by the Company. In 1999, the
Company distributed a portion of these shares to Messrs. DeSimone, Baukol, and
Agostini.

        From the time of issuance throughout the Restricted Period, Profit
Sharing Stock rises or falls in value in direct relationship to the Company's
common stock market performance. Consequently, Profit Sharing Stock reflects
both short-term and long-term performance elements.

        The named individuals have accumulated as of December 31, 1999, in one
case over ten years, the following shares of the Company's common stock under
the Company's Profit Sharing Plan. The Profit Sharing Stock is valued in this
table at the fair market value of such stock on December 31, 1999, and also on
the respective dates when the shares were issued into the custody of the
Company:

- --------------------------------------------------------------------------------
                                                    VALUE AT            VALUE
NAME                                  SHARES    DECEMBER 31, 1999    WHEN ISSUED
- ----                                  ------    -----------------    -----------
L.D. DeSimone .....................   41,351       $4,047,229         $2,839,613
R.O. Baukol .......................    3,908          382,496            335,376
G. Agostini .......................    6,833          668,780            557,917
J.W. Benson .......................      767           75,070             64,200
R.C. Richelsen ....................      785           76,832             65,689
- --------------------------------------------------------------------------------

(4) "Other Annual Compensation" includes the following, to the extent that the
aggregate thereof exceeds $50,000: personal benefits received by the named
individuals, amounts reimbursed to the individuals during the year for payment
of taxes, and that portion of interest above market rates (as determined by the
SEC) paid on that compensation voluntarily deferred by the individuals. The
personal benefits included in these numbers represent the amount of personal
financial planning services, an amount paid on behalf of the individual for the
term portion of insurance under the Company's Senior Executive Split Dollar
Plan, and air travel on corporate aircraft imputed to the individual as income
for tax purposes. In the case of Mr. DeSimone, nearly all of the "Other Annual
Compensation" received in 1999, 1998, and 1997 was a result of income imputed to
him for travel.

(5) The number of stock options shown in this column includes both annual grants
of incentive and nonqualified stock options and Progressive Stock Options, which
are described more fully in footnote 1 on page 18. The number and price of all
outstanding options were adjusted at the spin-off of Imation Corp. in order to
preserve the intrinsic value of the options. The number of stock options shown
in this column for 1999 reflects this adjustment.

(6) "Performance Unit Plan (LTIP) Payouts" reflects the value of the total grant
for each individual under the Company's Performance Unit Plan after the base
three-year performance period (i.e., the amount shown in 1999 covers the base
performance period from 1997-1999). Under the 1999 award, the amount earned will
be paid to these individuals in 2002, unless the participant elects to defer the
payout for three additional years. The numbers shown represent estimates based
upon information available as of February 29, 2000. More specific information
about the Performance Unit Plan is set forth on pages 20 and 23.


                                       16
<PAGE>


(7) "All Other Compensation" includes: (a) that amount of Performance Unit Plan
earnings allocated during the year to the base amounts determined after the
three-year performance periods of each respective grant, to the extent that such
earnings are in excess of market interest rates (as determined by the SEC); (b)
that amount deemed to be compensation to the individuals under the Company's
Senior Executive Split Dollar Plan in accordance with rules developed by the
SEC; and (c) all amounts contributed to the account of each named executive
under the Company's 401(k) plan. The Senior Executive Split Dollar Plan provides
insurance to all of the Company's executive officers under split dollar life
insurance, which is partly term insurance and partly whole life insurance with a
cash value. Under this Plan, the Company is reimbursed for the premium costs of
the non-term portion of coverage and a possible return when the arrangement
terminates either by insurance proceeds incident to the death of the individual
or by cash value after 15 years of participation in the Plan. During 1999,
amounts deemed compensation under the Plan to the named executive officers in
the Summary Compensation Table were $7,667 for Mr. DeSimone; $15,522 for Mr.
Baukol; $11,137 for Mr. Agostini; $13,122 for Mr. Benson; and $21,060 for Mr.
Richelsen. These amounts were determined by treating the non-term portion of the
coverage as an interest-free loan.


                                       17
<PAGE>


OPTION GRANTS IN LAST FISCAL YEAR

        The following table provides information on option grants during 1999 to
each person named in the Summary Compensation Table.

<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------------------------
                                     INDIVIDUAL GRANTS
- -------------------------------------------------------------------------------------
                                         % OF TOTAL
                                        OPTIONS/SARS                                      GRANT DATE VALUE
                         OPTIONS/           GRANTED        EXERCISE OR                  ---------------------
                           SARS        TO EMPLOYEES IN     BASE PRICE      EXPIRATION         GRANT DATE
       NAME          GRANTED (#) (1)     FISCAL YEAR      ($/SH) (1) (2)      DATE      PRESENT VALUE ($) (4)
       ----          ---------------   ---------------    --------------   ----------   ---------------------
<S>                       <C>                <C>              <C>           <C>              <C>
L.D. DeSimone             90,000             1.580%           $95.00        5-10-2009        $2,057,760
                          34,355             0.603%            77.75        5-07-2004           478,276
                          31,101             0.546%            77.75        5-12-2006           432,975

R.O. Baukol               22,600             0.397%            95.00        5-10-2009           516,726
                             269             0.005%            77.75        5-05-2000             3,745
                           4,555             0.080%            77.75        5-10-2002            63,413
                           6,020             0.106%            77.75        5-07-2004            83,808
                          19,336             0.339%            77.75        5-12-2006           269,187

G. Agostini               22,600             0.397%            95.00        5-10-2009           516,726

J.W. Benson               22,600             0.397%            95.00        5-10-2009           516,726
                           1,669             0.029%            93.10        5-11-2001            28,796
                           1,864             0.033%            93.10        5-10-2002            32,161
                           2,346             0.041%            93.10        5-09-2003            40,477
                           2,018             0.035%            93.10        5-07-2004            34,818
                           2,446             0.043%            93.10        5-06-2005            42,202
                           7,681             0.135%            93.10        5-12-2006           132,525
                           5,187             0.091%            93.10        5-12-2007            89,495

R.C. Richelsen            22,600             0.397%            95.00        5-10-2009           516,726
                           1,401             0.025%            93.30        5-05-2000            24,233
                           1,668             0.029%            93.30        5-11-2001            28,852
                           5,152             0.090%            93.30        5-10-2002            89,115
                           6,051             0.106%            93.30        5-09-2003           104,665
                           5,370             0.094%            93.30        5-07-2004            92,886
                           6,218             0.109%            93.30        5-06-2005           107,554
                           4,935             0.087%            93.30        5-12-2006            85,361

- -------------------------------------------------------------------------------------------------------------
All Optionees
 10,580 Participants   5,697,333           100.000%           $94.32        5-10-2009(3)   $126,684,474
- -------------------------------------------------------------------------------------------------------------
</TABLE>

(1) The Company has not granted any stock appreciation rights ("SARs"), except
in limited circumstances to employees of certain subsidiaries who are not
subject to the tax laws of the United States where SARs have less onerous tax
consequences than stock options. The options shown for each individual include
both annual grants of Incentive Stock Options and nonqualified stock options and
grants of Progressive Stock Options ("PSO"). Nonqualified options are subject to
a reload feature when exercised with the payment of the option price in the form
of previously owned shares of the Company's common stock. Such an exercise
results in further grants of PSOs. The first grant shown for each individual is
the annual grant. The remaining lines are PSOs. The PSO grants for each
individual were made on a single date, but are, pursuant to SEC rules, shown in
multiple lines because of different expiration dates.

        PSO grants were made to participants who exercised nonqualified stock
options and who paid the purchase price using shares of previously owned Company
common stock. The PSO grant is for the number of shares equal to the shares
utilized in payment of the purchase price and tax withholding, if any. The
option price for the PSO is equal to 100 percent of the market value of the
Company's common stock on the date of the exercise of the primary option or,
alternatively, on the date of the PSO grant to the five named individuals in the
table, all of whom are subject to the requirements of Section 162(m) of the
Internal Revenue Code. The option period is equal to the remaining period of the
options exercised.


                                       18
<PAGE>


        The participant must have owned Company common stock used for payment
for at least six months, and only one exercise of nonqualified options per
participant per calendar year will be eligible for PSO grants by the Committee.

        The presence of PSOs encourages early exercise of nonqualified stock
options, without foregoing the opportunity for further appreciation, and
promotes retention of the Company stock acquired.

        In any event, a participant receiving an annual grant of nonqualified
stock options can never acquire more shares of Company common stock through
successive exercises of the initial and subsequent PSO grants than the number of
shares covered by the initial annual grant from the Committee.

(2) All options granted during the period were granted at the market value on
the date of grant if initial grants, or at the fair market values discussed in
footnote 1 above in the case of PSOs, as calculated from the average of the high
and low prices reported on the New York Stock Exchange Composite Index. The
option price shown for the "All Optionees" line is $94.32 and represents the
weighted average exercise price of the options granted in 1999.

(3) The expiration date for the "All Optionees" line is shown as May 10, 2009,
since that is the applicable date for the vast majority of options granted
during 1999.

(4) Pursuant to the rules of the SEC, the Company has elected to provide a grant
date present value for these option grants determined by a modified
Black-Scholes pricing model. The Company's use of this model should not be
construed as an endorsement of its accuracy at valuing options. All stock option
valuation models, including the Black-Scholes model, require a prediction about
the future movement of the stock price. Among key assumptions utilized in this
pricing model were: (i) that the time of exercise of stock options would be 66
months (26 months for PSOs) into the term of the option, which could be for
terms as long as ten years, in recognition of the historical exercise patterns
at the Company for these types of options; (ii) expected volatility of 22.3
percent (28.8 percent for PSOs); (iii) risk-free rate of return of 5.4 percent
(5.4 percent for PSOs); and (iv) dividend growth rate of 5 percent. No
adjustments for non-transferability or risk of forfeiture have been made. The
Company expresses no opinion that the present value will, in fact, be realized
and expressly disclaims any representation to that effect.

OPTION EXERCISES AND YEAR-END OPTION VALUES

        The following table provides information on option exercises during 1999
and the value of unexercised options at the end of 1999 for each person named in
the Summary Compensation Table.

<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------------------------------
                 AGGREGATED OPTION EXERCISES IN LAST FISCAL YEAR, AND FY-END OPTION/SAR VALUE
- -------------------------------------------------------------------------------------------------------------------
                                                                                           VALUE OF UNEXERCISED
                                                            NUMBER OF UNEXERCISED       IN-THE-MONEY OPTIONS/SARS
                                                            OPTIONS AT FY-END (#)            AT FY-END ($)(1)
                  SHARES ACQUIRED ON   VALUE REALIZED   ----------------------------   ----------------------------
     NAME            EXERCISE (#)          ($)(1)       EXERCISABLE    UNEXERCISABLE   EXERCISABLE    UNEXERCISABLE
     ----         ------------------   --------------   -----------    -------------   -----------    -------------
<S>                    <C>               <C>              <C>              <C>          <C>              <C>
L.D. DeSimone          85,637            $1,061,052       433,654          90,000       $4,562,862       $258,750
R.O. Baukol            38,077               495,968       114,092          22,600        1,382,418         64,975
G. Agostini                 0                     0       108,637          22,600        2,603,616         64,975
J.W. Benson            28,403               284,303        36,128          45,811          823,508        174,808
R.C. Richelsen         37,440               412,103        30,032          53,395          222,755        205,862
- -------------------------------------------------------------------------------------------------------------------
</TABLE>

(1) The "Value Realized" or the unrealized "Value of Unexercised In-the-Money
Options at FY-End" represents the aggregate difference between the market value
on the date of exercise or at December 31, 1999, in the case of the unrealized
values, and the applicable exercise prices. These differences accumulate over
what may be, in many cases, several years. These stock options all have option
periods of ten years when first granted, and Progressive Stock Options have
option periods equal to the remaining option period of the initial nonqualified
options resulting in Progressive Stock Options.


                                       19
<PAGE>


LONG-TERM INCENTIVE PLAN AWARDS TABLE

        The following table shows information on awards during 1999 under the
Company's Performance Unit Plan for each person in the Summary Compensation
Table.

<TABLE>
<CAPTION>
- -----------------------------------------------------------------------------------------------------------
                                LONG-TERM INCENTIVE PLAN AWARDS IN LAST FISCAL YEAR
                  -----------------------------------------------------------------------------------------
                                       PERFORMANCE OR         ESTIMATED FUTURE PAYOUTS
                  NUMBER OF SHARES,     OTHER PERIOD     UNDER NON-STOCK PRICE BASED PLANS(3)
                   UNITS OR OTHER     UNTIL MATURATION   ------------------------------------
     NAME           RIGHTS (#)(1)       OR PAYOUT (2)      THRESHOLD ($)         TARGET ($)     MAXIMUM ($)
     ----         -----------------   ----------------   -----------------   ----------------   -----------
<S>                     <C>               <C>                   <C>              <C>            <C>
L.D. DeSimone           9,000             3 years               $0               $900,000       $1,800,000
R.O. Baukol             3,700             3 years                0                370,000          740,000
G. Agostini             2,400             3 years                0                240,000          480,000
J.W. Benson             2,400             3 years                0                240,000          480,000
R.C. Richelsen          2,400             3 years                0                240,000          480,000
- -----------------------------------------------------------------------------------------------------------
</TABLE>

(1) The Company's Performance Unit Plan provides long-term compensation to 99
key management personnel based upon the Company's attainment of long-term
performance and growth criteria.

        The Compensation Committee, of which none of the members are current
employees of the Company, administers the Plan. The Committee has sole
discretion in the selection of participants, performance criteria, size of
awards, performance period, and the timing and form of payment, as well as all
other conditions regarding awards.

        Awards made in 1999 under the Performance Unit Plan are based on
performance criteria that focus management attention on two key factors that
create shareholder value: Real Growth and Economic Profit. The payout can vary
from $0 to $200 per unit. The payout can be reached by either performance
criteria alone, or by both in combination. The payout may be deferred by the
participant for three additional years and earn interest at a specified rate. No
amount will be payable under the Performance Unit Plan if the Company's Real
Growth is less than the Big 7 IPI and if Economic Profit is less than 75 percent
of the Economic Profit of the previous three years. More detail about current
performance goals is available in the Report of Compensation Committee on page
23.

        The right to receive payment is contingent upon continued employment to
the payment date, and is subject to forfeiture prior to the payment date in the
event of termination of employment for any reason other than retirement under a
pension plan of the Company or physical or mental disability. Participants
receiving awards during 1999, including the five executive officers in the
Summary Compensation Table, will receive payment in 2002, provided that such
individuals continue employment with the Company until such payment date (except
in the event of death, retirement, or disability). Payment under the Plan may be
made in cash, shares of the Company's common stock, or any combination of cash
and stock, at the discretion of the Compensation Committee. In the past, payment
has been made only in cash.

(2) The value of awards granted for 1999 will be determined by the Company's
attainment of Real Growth and Economic Profit performance criteria during a
three-year performance period of 1999, 2000, and 2001. More detail about current
performance goals is available in the Compensation Committee Report on page 23.
At the beginning of every performance period, participants may elect to defer
the payout for three years beyond the base performance period (for the 1999
award, the payout will be made the beginning of 2002, unless the participant
elects to defer the payout for three additional years). Participants will earn
interest during the deferral period. The deferred amount will be subject to
forfeiture if the participant discontinues employment for any reason other than
death, disability, or retirement.

(3) The estimated future payouts do not include any interest factor that would
be earned annually during the optional three-year deferral period following the
performance period. Interest during the optional three-year deferral period
would accrue annually at a rate equal to the annualized yield to maturity of a
five-year Treasury note as of the last business day of the preceding year (for
1998, that rate was 4.54 percent) PLUS an amount based on the Company's Economic
Profit for the preceding year as a percentage of the average operating capital
(for 1998, that rate was 5.9 percent). The interest would be payable, together
with the base award, in January 2005.


                                       20
<PAGE>


ESTIMATED ANNUAL RETIREMENT BENEFITS TABLE UNDER PENSION PLAN

        The following table shows the estimated annual benefits payable upon
retirement to the Company's executive officers in specified remuneration and
years of service classifications.

- --------------------------------------------------------------------------------
                                       ANNUAL RETIREMENT BENEFITS
       AVERAGE                           WITH YEARS OF SERVICE
   ANNUAL EARNINGS                           INDICATED (2)
  DURING THE HIGHEST   ---------------------------------------------------------
   FOUR CONSECUTIVE        30             35              40             45
 YEARS OF SERVICE (1)     YEARS          YEARS           YEARS          YEARS
- --------------------------------------------------------------------------------
      $ 800,000        $  356,315     $  415,700      $  461,700      $  507,700
      1,200,000           536,315        625,700         694,700         763,700
      1,600,000           716,315        835,700         927,700       1,019,700
      2,000,000           896,315      1,045,700       1,160,700       1,275,700
      2,400,000         1,076,315      1,255,700       1,393,700       1,531,700
      2,800,000         1,256,315      1,465,700       1,626,700       1,787,700
- --------------------------------------------------------------------------------

(1) Earnings include base salary, profit sharing cash, and the value of Profit
Sharing Stock (at the time of award) actually earned by the participant and does
not include any other forms of remuneration. The benefits are computed on the
basis of straight-life annuity amounts and are not subject to any deduction for
Social Security or other offset amounts.

(2) To provide for the retirement security of its employees, the Company has
defined benefit pension plans for U.S. employees. These plans are fully paid by
the Company, and employees become vested after five years of service. Under the
plans, a participant may retire with an unreduced pension at age 60 (61 or 62
for employees born after 1942) and if the participant's age and years of service
total at least 90 (91 or 92 for employees born after 1942) he or she would
receive a Social Security bridge to age 62. The five individuals listed in the
Summary Compensation Table are presently entitled to the respective years of
service credit set opposite their names:

- --------------------------------------------------------------------------------
           L.D. DeSimone........................................43
           R.O. Baukol..........................................33
           G. Agostini..........................................34
           J.W. Benson..........................................32
           R.C. Richelsen.......................................37
- --------------------------------------------------------------------------------

REPORT OF THE COMPENSATION COMMITTEE

        This report was prepared at the direction of the Compensation Committee
of the Board of Directors (the "Committee"), which is composed entirely of
nonemployee directors of the Company. The Committee establishes and periodically
reviews compensation levels and policies for the Chief Executive Officer ("CEO")
and other executive officers and authorizes short-term and long-term
compensation in the form of cash or stock. The current members of the Committee
are Edward A. Brennan, who serves as Chair, Allen E. Murray, Rozanne L. Ridgway,
and Frank Shrontz.

COMPENSATION OBJECTIVES

        The executive compensation program is designed to align total
compensation with the Company's strategic objectives and ensure that payouts are
driven by Company performance and employee contribution to the Company.
Executive compensation is linked to Company performance compared to specific
financial and non-financial objectives. These objectives range from achieving
earnings and sales growth targets to upholding the Company's Statement of
Corporate Values (which include customer satisfaction through superior quality
and value, attractive investor return, ethical business conduct, respecting the
environment, and fostering employee pride in the Company).


                                       21
<PAGE>


        In determining the amount and type of executive compensation, the
Committee seeks to achieve the following objectives:

        *   To attract, motivate, and retain talented, competent, and
            resourceful executive officers by providing competitive
            compensation.

        *   To encourage executives to hold significant amounts of Company
            stock.

        *   To require that a substantial portion of executive compensation is
            "at risk" by being tied to quantifiable short-term and long-term
            measures of the Company's performance.

PROCESS OF ESTABLISHING COMPENSATION

        The Committee begins the process of establishing the amount of
compensation for the CEO and other executive officers by reviewing compensation
surveys of selected companies. Independent consultants specializing in executive
compensation primarily conduct the surveys. The Committee, in consultation with
the independent consultants, selects the companies included in the compensation
surveys. These companies consist of large industrial companies that are most
likely to be competitors for executive talent. The objective of the Committee is
to use the survey data to establish a competitive level of total compensation.
The Committee believes that the Company's most direct competitors for executive
talent are not necessarily all of the companies that would be included in a
group established to compare shareholder returns. Thus, the group of companies
for purposes of the compensation surveys is not the same as the peer group index
(DJIA and S&P 500) in the Comparison of Five-Year Cumulative Total Return graph
included on page 25 of this proxy statement.

        The Committee does not target any specific quartile of the survey data
for total compensation or any component of total compensation (e.g., base
salary, profit sharing, performance unit plan, or stock options). The
Committee's objective of maintaining the total compensation at a competitive
level has resulted in short-term compensation (base salary and profit sharing
cash) and long-term compensation (performance unit plan, profit sharing stock,
and stock options) being at or very close to the median.

        After the Committee has established the amount of total compensation for
the CEO and other executive officers, the Committee next determines what percent
of the total compensation should be allocated to short-term compensation in the
form of base salary and profit sharing cash and long-term compensation in the
form of the performance unit plan, profit sharing stock, and stock options. This
determination is subjective, but is based on information from the compensation
surveys and the objectives for executive compensation referred to above. It is
the Committee's long-standing policy that variable, at-risk compensation, both
short-term and long-term, should make up a significant portion of executive
compensation. Depending upon the level of the executive, the Committee targets
between 65 percent and 85 percent of executive compensation to be variable and
at risk by being tied to quantifiable measures of the Company's performance.

ELEMENTS OF THE COMPENSATION PROGRAM

        Each of the components of short-term and long-term executive
compensation is described in greater detail below.

BASE SALARY

        The Committee establishes base salaries annually in relation to base
salaries paid by the selected companies from the compensation surveys. Base
salaries may be adjusted from time to time according to guidelines established
for all employees to reflect increased salary levels within the group, increased
responsibilities, or individual performance. This is the only component of
executive compensation that is not variable.

PROFIT SHARING

        Profit sharing is variable compensation based on quarterly performance
measurements for the Company. In 1999, the stockholders approved the change in
performance criteria recommended by the Compensation Committee from consolidated
net income to economic profit. Economic profit is defined as quarterly net
operating income minus a capital charge and emphasizes the effective use of
working capital. The economic profit measurement is deemed by the Committee to
be related more directly to the creation of stockholder value and will be more
sensitive to the performance of the Company. Thus, it is


                                       22
<PAGE>


expected that compensation paid under the new measurement will tend to rise and
fall relatively more sharply than payments under prior measurement criteria. The
Committee, as part of the overall compensation, determines number of shares of
profit sharing granted to the CEO and executive officers to achieve the
appropriate ratio between short-term, performance-based compensation and other
forms of compensation, and to reflect the level of responsibility of the
respective executive officer.

        The amount payable under this plan shall be based on the number of
shares of profit sharing assigned to a participant, multiplied by an amount
based on quarterly economic profit. The total paid under this plan to the
Company's five most highly compensated officers will never exceed one-half
percent of the consolidated net income of the Company. Profit sharing payments
are subject to limitations when individual amounts exceed specified
relationships to base salary.

        For the executive officers listed in the Summary Compensation Table, a
portion of profit sharing is paid in cash and a portion is paid in stock which
is held by the Company for three years or until age 65, whichever occurs first.
The ratio between that portion of profit sharing paid in cash and the portion
paid in stock to the named executive officers for 1999 is subjective and varies
from year to year and among executive officers. However, the more senior
executive officers generally have been paid a larger portion of profit sharing
in stock than less senior executive officers. More details about the Company's
Profit Sharing Plan are provided on page 15 of this proxy statement.

PERFORMANCE UNIT PLAN

        The Performance Unit Plan is variable compensation based on the
Company's long-term performance. The Committee establishes the number of
performance units allocated to the CEO and executive officers to achieve the
appropriate ratio between long-term, performance-based compensation and other
forms of compensation. The amount payable with respect to each performance unit
granted is determined by and is contingent upon attainment of the performance
criteria described below over the applicable three-year performance period (each
year weighted equally).

        The current performance criteria have been selected to focus management
attention on two key factors that create shareholder value: Real Growth and
Economic Profit.

        PERFORMANCE CRITERIA:

        (1) "Real Growth" is the percentage amount by which the Company's
worldwide unit sales growth as reported in the Company's Annual Report exceeds
the weighted average of the Industrial Production Index ("IPI") of the top seven
industrial nations in which the Company does business (the "Big 7 IPI"); and

        (2) "Economic Profit" is the Company's net operating income (operating
income adjusted for income taxes) less the cost of capital utilized (average
operating capital multiplied by the cost of capital).

        PERFORMANCE UNIT PLAN PAYMENTS:

        The amount payable with respect to each performance unit granted in 1999
is linked to the performance criteria of Real Growth and Economic Profit. The
payout can vary from $0 to $200 per unit. The payout can be reached by either
performance criteria alone, or by both in combination. The payout for the 1999
Award is payable on May 2002, in the form (at the discretion of the Committee)
of cash, stock, or a combination of cash and stock. The payout may be deferred
by the participant for three additional years and earn interest at a specified
rate. No amount will be payable under the Performance Unit Plan if the Company's
Real Growth is less than the Big 7 IPI and if Economic Profit is less than 75
percent of the Economic Profit of the previous three years.

STOCK OPTIONS

        The Company's Stock Option plan is also variable compensation. It is
based on the market appreciation of the Company's common stock and is designed
to increase ownership of the Company's stock. The Company makes stock option
grants annually at 100 percent of the market price on the date of grant. The
options may be exercised after one year and have a ten-year life. The number of
shares under options to be granted to the CEO and executive officers is
determined by the Committee as part of the overall compensation. The awards are
designed to keep total compensation competitive with


                                       23
<PAGE>


companies in the survey group, and as such require subjective judgment as to the
value of the award. The number of option shares currently held by each executive
is not considered in determining awards. Stock options encourage executives to
become owners of the Company, which further aligns their interests with the
stockholders. Options have no value unless the price of the Company's stock
increases.

CHIEF EXECUTIVE OFFICER COMPENSATION

        The compensation of Livio D. DeSimone, Chairman of the Board and Chief
Executive Officer, is determined by the same process and consists of the same
short-term and long-term components as for the other executive officers listed
in the Summary Compensation Table, namely base salary, profit sharing,
Performance Unit Plan, and stock options. A higher portion of Mr. DeSimone's
total compensation is variable and at risk by being tied to quantifiable
measures of the Company's performance. These measures are quarterly net income,
Real Growth, and Economic Profit, as those terms are defined above, and
appreciation in the value of 3M stock.

        In addition, the compensation paid to Mr. DeSimone is also based on
performance against non-financial measures. These non-financial measures include
upholding the Company's Statement of Corporate Values (which include customer
satisfaction through superior quality and value, attractive investor return,
ethical business conduct, respecting the environment, and fostering employee
pride in the Company), management succession planning, and the general overall
perception of the Company by financial and business leaders.

        No changes have been made to the fixed base salary portion of Mr.
DeSimone's compensation since January 1997 and no changes were made to the
variable, performance-based portion of Mr. DeSimone's compensation in 1999.
Increases in compensation over the amounts paid in 1998 were due solely to the
improved performance of the Company.

DEDUCTIBILITY OF EXECUTIVE COMPENSATION

        Section 162(m) of the Internal Revenue Code limits the Company's ability
to deduct, for federal income tax purposes, certain compensation in excess of $1
million per year paid to persons named in the Summary Compensation Table. The
Committee intends to ensure that all compensation paid to the executive officers
named in the Summary Compensation Table continues to meet the deductibility
requirements of Section 162(m) to the extent that such requirements do not
compromise the Company's ability to design effective compensation plans that
meet the Company's executive compensation objectives described above.

CONCLUSION

        The Committee is satisfied that the short-term and long-term
compensation paid to the executive officers of the Company create alignment with
the Company's strategic objectives and ensure that payouts are driven by Company
performance and employee contribution to the Company.

The Compensation Committee

Edward A. Brennan, Chair

Allen E. Murray
Rozanne L. Ridgway
Frank Shrontz


                                       24
<PAGE>


3M STOCK PERFORMANCE GRAPH

        The following compares the Company's cumulative and annualized total
shareholder return, overall stock market performance with reinvested dividends*,
during the five fiscal years preceding December 31, 1999, against the Standard &
Poor's 500 Stock Index and the Dow Jones Industrial Average, both of which are
well-known and published industry indices. The Company is included in both the
S&P 500 Stock Index and the Dow Jones Industrial group of 30 companies. The
Company, as a highly diversified manufacturer and seller of a broad line of
products, is not easily categorized with other, more specific, industry indices.

        The annual changes for the five-year period shown in the graph are based
on the assumption that $100 had been invested in the Company's stock and each
index on December 31, 1994 (as required by SEC rules), and that all quarterly
dividends were reinvested at the average of the closing stock prices at the
beginning and end of the quarter. The total cumulative dollar returns shown on
the graph represents the value that such investments would have had on December
31, 1999.

        *The Company's interest in Imation Corp. was distributed to stockholders
as a special stock dividend payable in shares of Imation Corp. stock on July 15,
1996. The following graph accounts for this distribution as though it was paid
in cash and reinvested in common shares of the Company.

      COMPARISON OF FIVE-YEAR CUMULATIVE AND ANNUALIZED TOTAL RETURN AMONG
               3M, S&P 500 INDEX, AND DOW JONES INDUSTRIAL AVERAGE


                              3M STOCK PERFORMANCE
                          (WITH DIVIDEND REINVESTMENT)

                               [PLOT POINTS CHART]

Cumulative Return (per graph)
- -----------------------------
                         1994      1995      1996      1997      1998      1999
                         ----      ----      ----      ----      ----      ----
3M                      100.0     128.3     172.7     174.8     155.8     219.9
DJIA                    100.0     136.8     176.3     220.2     260.1     330.8
S&P 500                 100.0     137.5     168.9     225.2     289.4     350.3

Annualized Return
- -----------------
3M                        1.5%     28.3%     34.5%      1.2%    -10.9%     41.2%
DJIA                      5.1%     36.7%     28.9%     24.9%     18.1%     27.2%
S&P 500                   1.4%     37.4%     22.9%     33.3%     28.5%     21.0%


                                       25
<PAGE>


        ADDITIONAL QUESTIONS AND INFORMATION REGARDING ACCESS TO FUTURE ANNUAL
REPORTS AND PROXY STATEMENTS VIA THE INTERNET AND STOCKHOLDER PROPOSALS

        Q: DOES 3M OFFER STOCKHOLDERS THE OPTION OF VIEWING ANNUAL REPORTS TO
STOCKHOLDERS AND PROXY STATEMENTS VIA THE INTERNET?

        A: Yes. 3M offers stockholders of record the option to view future
Annual Reports to Stockholders and Proxy Statements via the Internet, instead of
receiving paper copies of these documents in the mail.

        Q: HOW DO I ELECT THIS OPTION?

        A: If you are interested in viewing future Annual Reports to
Stockholders and Proxy Statements on the Internet, instead of receiving paper
copies of these documents, please do the following:

            (1) Go to web site http://www.econsent.com/mmm.

            (2) Review Important Considerations and Frequently Asked Questions.

            (3) You will need your account number, which can be found above your
                name and address on your dividend check stub and your social
                security number, if you have a social security number.

            (4) Follow the prompts.

        Q: WHAT HAPPENS IF ADDITIONAL PROPOSALS ARE PRESENTED AT THE MEETING?

        A: Other than the proposals described in this proxy statement, we do not
expect any matters to be presented for a vote at the Annual Meeting. If you
grant a proxy, the persons named as proxy holders, L.D. DeSimone, 3M's Chairman
and CEO, E.A. Brennan, F. Alan Smith, will have the discretion to vote your
shares on any additional matters properly presented for a vote at the meeting.
If for any unforeseen reason any of our nominees is not available as a candidate
for director, the persons named as proxy holders will vote your proxy for such
other candidate or candidates as may be nominated by the Board of Directors.

        Q: MAY I PROPOSE ACTIONS FOR CONSIDERATION AT NEXT YEAR'S ANNUAL MEETING
OF STOCKHOLDERS OR NOMINATE INDIVIDUALS TO SERVE AS DIRECTORS?

        A: You may submit proposals for consideration at future stockholder
meetings, including director nominations.

            *   STOCKHOLDER PROPOSALS: In order for a stockholder proposal to be
                considered for inclusion in 3M's proxy statement for next year's
                Annual Meeting, the written proposal must be RECEIVED by the
                Secretary no later than 5 p.m. Central Time on November 24,
                2000. SUCH PROPOSALS MUST BE IN WRITING AND SENT VIA REGISTERED,
                CERTIFIED, OR EXPRESS MAIL TO: ROGER P. SMITH, SECRETARY,
                MINNESOTA MINING AND MANUFACTURING COMPANY, 3M CENTER, ST. PAUL,
                MN 55144. PROPOSALS SENT BY ANY OTHER MEANS, INCLUDING FACSIMILE
                OR OTHER FORMS OF ELECTRONIC SUBMISSIONS, WILL NOT BE ACCEPTED.
                Such proposals also will need to comply with Securities and
                Exchange Commission regulations regarding the inclusion of
                stockholder proposals in Company sponsored proxy materials.

                Similarly, in order for a stockholder proposal to be raised from
                the floor during next year's Annual Meeting, the stockholder's
                written notice must be RECEIVED by the Secretary between January
                12, 2001, and February 11, 2001, and shall contain such
                information as required under our Bylaws. Please note that these
                requirements relate only to matters a shareholder wishes to
                bring before the Annual Meeting. They do not apply to proposals
                that a shareholder wishes to have included in the Company's
                proxy statement.


                                       26
<PAGE>


            *   NOMINATION OF DIRECTOR CANDIDATES: You may propose director
                candidates for consideration by our Board Organization
                Committee. In addition, our Bylaws permit stockholders to
                nominate directors at a stockholder meeting. In order to make a
                director nomination at a stockholder meeting it is necessary
                that the stockholder's written notice be RECEIVED by the
                Secretary between January 12, 2001, and February 11, 2001, and
                shall contain such information as required under our Bylaws.

            *   COPY OF BYLAWS PROVISIONS: You may contact the Secretary at our
                Company headquarters for a copy of the relevant provisions of
                the Bylaws regarding the requirements for making stockholder
                proposals and nominating director candidates.


By Order of the Board of Directors.


/s/ Roger P. Smith


ROGER P. SMITH
SECRETARY


                                       27
<PAGE>

                                ATTENDANCE CARD

[LOGO] 3M

Annual Meeting of Stockholders
- --------------------------------------------------------------------------------
MAY 9, 2000
RIVERCENTRE
175 WEST KELLOGG BLVD.
ST. PAUL, MINNESOTA

This is your ticket to the 2000 Annual Meeting. Please show it upon arrival and
keep it with you during the day. Annual Meeting activities begin at 8:30 a.m.
with product demonstrations and displays. The meeting starts at 10:00 a.m.
After the meeting, lunch will be served and the 3M store will open.
     The meeting will be held in the Roy Wilkins Auditorium. Hosts and hostesses
will show you the way after you enter the RiverCentre.
     Since parking space is limited, you are urged to consider carpooling or
public transportation.


                                ATTENDANCE CARD

[LOGO] 3M

Annual Meeting of Stockholders
- --------------------------------------------------------------------------------
MAY 9, 2000
RIVERCENTRE
175 WEST KELLOGG BLVD.
ST. PAUL, MINNESOTA


This is your ticket to the 2000 Annual Meeting. Please show it upon arrival and
keep it with you during the day. Annual Meeting activities begin at 8:30 a.m.
with product demonstrations and displays. The meeting starts at 10:00 a.m.
After the meeting, lunch will be served and the 3M store will open.
     The meeting will be held in the Roy Wilkins Auditorium. Hosts and hostesses
will show you the way after you enter the RiverCentre.
     Since parking space is limited, you are urged to consider carpooling or
public transportation.


                                                  [LOGO] Recycled Paper
                                                         40% Pre-consumer paper
                                                         10% Post-consumer paper

<PAGE>


    MINNESOTA MINING AND MANUFACTURING COMPANY
    3M CENTER, ST. PAUL, MINNESOTA 55144                                   PROXY
- --------------------------------------------------------------------------------

THE BOARD OF DIRECTORS SOLICITS THIS PROXY FOR USE AT THE ANNUAL MEETING ON
TUESDAY, MAY 9, 2000.

The stockholder(s) whose signature(s) appear(s) on the reverse side of this
proxy card hereby appoint(s) L.D. DeSimone, and E.A. Brennan, and F. Allan Smith
or any of them, each with full power of substitution, as proxies, to vote all
shares of common stock in Minnesota Mining and Manufacturing Company which the
stockholder(s) would be entitled to vote on all matters which may properly come
before the 2000 Annual Meeting of Stockholders and any adjournments thereof. THE
PROXIES SHALL VOTE SUBJECT TO THE DIRECTION INDICATED ON THE REVERSE SIDE OF
THIS CARD. THE PROXIES ARE AUTHORIZED TO VOTE IN THEIR DISCRETION UPON OTHER
BUSINESS AS MAY PROPERLY COME BEFORE THE MEETING AND ANY ADJOURNMENTS OR
POSTPONEMENTS THEREOF. THE PROXIES WILL VOTE AS THE BOARD OF DIRECTORS
RECOMMENDS WHERE A CHOICE IS NOT SPECIFIED.

FOR PARTICIPANTS IN 3M'S VOLUNTARY INVESTMENT PLAN (VIP), EMPLOYEE STOCK
OWNERSHIP PLAN (ESOP), AND SAVINGS PLAN:

In accordance with the terms of the VIP, ESOP, and Savings Plan, shares
allocated to my respective accounts in these plans on the record date will be
voted by the trustee, State Street Bank and Trust Company, in accordance with
the instructions indicated on the reverse side of this card, and in accordance
with the judgment of the trustee upon other business as may properly come before
the meeting and any adjournments or postponements thereof. If no instructions
are provided or if this card is not received on or before May 4, 2000, shares
held in my account for the VIP and Savings Plan will be voted by the trustee as
directed by the Public Issues Committee of the 3M Board of Directors. If no
instructions are provided or if this card is not received on or before May 4,
2000, shares held in my account for the ESOP will be voted by the trustee in the
same proportion that the other participants in the ESOP direct the trustee to
vote shares in their ESOP accounts.




            (CONTINUED, AND TO BE SIGNED AND DATED ON THE OTHER SIDE)

<PAGE>


                                                                          SHARES
IF NO DIRECTION IS GIVEN, THIS PROXY WILL BE VOTED FOR ITEMS 1, 2 AND 3.

- --------------------------------------------------------------------------------
THE BOARD OF DIRECTORS RECOMMENDS A VOTE FOR ITEMS 1, 2 AND 3.

ITEM 1. Election of directors

        - Nominees to 2003 Class: (01) [       ]; (02) Ronald O. Baukol;

                                  (03) [       ]; (04) Aulana L. Peters


        [ ] Vote FOR all nominees             [ ] Vote FOR ALL EXCEPT

        [ ] Vote WITHHELD from all nominees   (use number before nominee's name
                                              to indicate exceptions):


ITEM 2. Ratification of Independent Auditors
                                           [ ] For    [ ] Against    [ ] Abstain

ITEM 3. Proposal to approve an amendment to the Certificate of Incorporation
to increase authorized common stock and change par value
                                           [ ] For    [ ] Against    [ ] Abstain

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

ITEM 4. In their discretion, to vote upon other matters properly coming before
the meeting.

THIS PROXY WHEN PROPERLY EXECUTED WILL BE VOTED AS DIRECTED. IF NO DIRECTION IS
GIVEN, IT WILL BE VOTED "FOR" ITEMS 1, 2 AND 3.


                                                --------------------------------
                                                Signature

                                                --------------------------------
                                                Signature

                                                --------------------------------
                                                Date

                                                Please sign exactly as your
                                                name(s) appear above. If held in
                                                joint tenancy, all persons must
                                                sign. Trustees, administrators,
                                                etc. should include title and
                                                authority. Corporations should
                                                provide full name of corporation
                                                and title of authorized officer
                                                signing the proxy.

<PAGE>


                               VOTING INSTRUCTIONS

                     THERE ARE THREE WAYS TO VOTE YOUR PROXY

                                VOTE BY INTERNET
                           http://www.eproxy.com/mmm/

        Use the Internet to vote your proxy 24 hours a day, 7 days a week. Have
your proxy card in hand when you access the web site. You will be prompted to
enter your 3-digit company number and a 7-digit control number (these numbers
are located on the proxy card) to create an electronic ballot.

                                VOTE BY TELEPHONE
                                 1-800-240-6326

        Use any touch-tone telephone to vote your proxy 24 hours a day, 7 days a
week. Have your proxy card in hand when you call. You will be prompted to enter
your 3-digit company number and a 7-digit control number (these numbers are
located on the proxy card). Follow the recorded instructions.

                                  VOTE BY MAIL

        Mark, sign, and date your proxy card and return it in the postage paid
envelope provided so that it is received by May 4, 2000.

        YOUR INTERNET OR TELEPHONE VOTE AUTHORIZES THE NAMED PROXIES TO VOTE
YOUR SHARES IN THE SAME MANNER AS IF YOU MARKED, SIGNED, AND RETURNED YOUR PROXY
CARD. THE DEADLINE FOR INTERNET OR TELEPHONE VOTING IS NOON (CENTRAL DAYLIGHT
TIME) ON MAY 8, 2000.

        PARTICIPANTS IN 3M'S VOLUNTARY INVESTMENT PLAN, EMPLOYEE STOCK OWNERSHIP
PLAN, AND SAVINGS PLAN MAY INSTRUCT THE TRUSTEE HOW TO VOTE THEIR SHARES VIA THE
INTERNET, BY TELEPHONE, OR BY SIGNING AND RETURNING THE PROXY CARD.

        Thank you for voting.

<PAGE>


TO PARTICIPANTS IN THE 3M VOLUNTARY INVESTMENT PLAN AND THE 3M EMPLOYEE STOCK
OWNERSHIP PLAN

        State Street Bank and Trust Company is Trustee of the Trusts established
in connection with the 3M Employee Stock Ownership Plan (the "ESOP") and the 3M
Voluntary Investment Plan (the "VIP"). As Trustee, it is the record owner of the
shares of common stock of Minnesota Mining and Manufacturing Company ("3M") held
in the ESOP and the VIP for the benefit of participants. Since the portion of
the 3M Payroll-Based Employee Stock Ownership Plan ("PAYSOP") applicable to
union-free employees was merged into the ESOP during 1990, the shares of 3M
common stock held in the PAYSOP Trust have now been transferred to the ESOP
Trust.

        The ESOP and the VIP each permit participants, as Named Fiduciaries, to
direct the respective Trustees how to vote the number of shares of 3M common
stock allocated to the participants' respective accounts. Additionally, as a
Named Fiduciary of the ESOP, you are entitled to direct the Trustee how to vote
a proportionate number of shares which have not been allocated to participants
or for which no voting directions have been received. The number of shares of 3M
common stock held in your individual accounts in the ESOP and the VIP are
indicated at the top of the enclosed proxy card.

        We enclose (1) a Notice of Annual Meeting of 3M Stockholders to be held
on May 9, 2000, and Proxy Statement, (2) instructions for giving voting
directions to the Trustee via the Internet, by telephone, or by mail through use
of the enclosed proxy card, and (3) a return envelope. The Trustee will vote, in
accordance with your directions, the shares of 3M common stock allocated to your
respective accounts if you give voting directions by (i) the Internet as
described in the enclosed voting instructions, (ii) telephone as described in
the enclosed voting instructions, or (iii) completing the enclosed proxy card
and returning it in the enclosed return envelope so that it is received no later
than May 4, 2000, by Norwest Bank Minnesota, N.A., acting as tabulation agent
for the Trustee.

        The Trustee remains at all times the record owner of the 3M common stock
held in the ESOP and VIP accounts. The ability to direct the Trustee how to vote
confers no right on participants to vote directly at the Annual Meeting of
Stockholders.

        Internet or telephone voting instructions must be properly followed or
the enclosed proxy card must be properly completed if voting directions are to
be honored. If the Internet or telephone voting instructions are not followed or
if the card is not received by May 4, 2000, or if the voting directions are
invalid, the shares held in your ESOP accounts will be voted by State Street
Bank and Trust Company in the same proportion that the other participants in the
ESOP direct the Trustee to vote the shares held in their ESOP accounts, and the
shares held in your VIP account shall be voted by State Street Bank and Trust
Company as directed by the Public Issues Committee of the 3M Board of Directors.

        Please provide voting directions to the Trustee via the Internet or by
telephone in accordance with the enclosed voting instructions, or complete,
date, sign, and promptly return the enclosed proxy card.

TO PARTICIPANTS IN THE 3M SAVINGS PLAN

        State Street Bank and Trust Company is Trustee of the Trust established
in connection with the 3M Savings Plan (the "Savings Plan"). As Trustee, it is
the record owner of the shares of common stock of Minnesota Mining and
Manufacturing Company ("3M") held in the Savings Plan for the benefit of
participants. Since the portion of the 3M Payroll-Based Employee Stock Ownership
Plan ("PAYSOP") applicable to employees eligible to participate in the Savings
Plan was merged into the Savings Plan during 1993, the shares of 3M common stock
held in the PAYSOP Trust have now been transferred to the Savings Plan.

        The Savings Plan permits participants to direct the Trustee how to vote
the number of shares of 3M common stock allocated to the participants'
respective accounts. The number of shares of 3M common stock held in your
individual account in the Savings Plan are indicated at the top of the enclosed
proxy card.

        We enclose (1) a Notice of Annual Meeting of 3M Stockholders to be held
on May 9, 2000, and Proxy Statement, (2) instructions for giving voting
directions to the Trustee via the Internet, by telephone, or by mail through use
of the enclosed proxy card, and (3) a return envelope. The Trustee will vote, in
accordance with your directions, the shares of 3M common stock allocated to your
account if you give voting directions by (i) the Internet as described in the
enclosed voting instructions, (ii) telephone as described in the enclosed voting
instructions or (iii) completing the enclosed proxy card and returning it in

<PAGE>


the enclosed envelope so that it is received no later than May 4, 2000 by
Norwest Bank Minnesota, N.A., acting as tabulation agent for the Trustee.

        The Trustee remains at all times the record owner of the 3M common stock
held in the Savings Plan accounts. The ability to direct the Trustee how to vote
confers no right on participants to vote directly at the Annual Meeting of
Stockholders.

        Internet or telephone voting instructions must be properly followed or
the enclosed proxy card must be properly completed if voting directions are to
be honored. If the Internet or telephone voting instructions are not followed or
if the card is not received by May 4, 2000, or if the voting directions are
invalid, the shares held in your Savings Plan account shall be voted by State
Street Bank and Trust Company, as directed by the Public Issues Committee of the
3M Board of Directors.

        Please provide voting directions to the Trustee via the Internet or by
telephone in accordance with the enclosed voting instructions, or complete,
date, sign, and promptly return the enclosed proxy card.

<PAGE>


                         ------------------------------
                                  TWO EASY WAYS
                            TO SUBMIT YOUR VOTE/PROXY
                         ------------------------------


                          24 HOURS A DAY, 7 DAYS A WEEK
                     Fast, Convenient, and Immediate Posting


                -------------------               --------------------
                TO VOTE BY INTERNET               TO VOTE BY TELEPHONE
                -------------------               --------------------

                   Go to the website:           In the U.S., call toll-free
           http://www.eproxy.com/mmm/           1-800-240-6326 using
                                                a touch-tone phone

        Follow these four easy steps:           Follow these four easy steps:

          Read the accompanying Proxy    (1)    Read the accompanying Proxy
              Statement and have your           Statement and have your
                   proxy card at hand           proxy card at hand

       Go to the website stated above    (2)    In the U.S., call the toll-free
                                                number 1-800-240-6326 using a
                                                touch-tone phone

 Enter the 3-digit company number and    (3)    Enter the 3-digit company number
the 7-digit control number located at           and the 7-digit control number
  the upper right hand corner on your           located at the upper right hand
                           proxy card           corner on your proxy card

   Follow the simple instructions and    (4)    Follow the simple recorded
  click on "Submit Vote" when you are           instructions
                             finished


- --------------------------------------------------------------------------------
                    THANK YOU FOR SUBMITTING YOUR VOTE/PROXY.

       IF YOU VOTE BY TELEPHONE OR INTERNET, DO NOT MAIL YOUR PROXY CARD.
- --------------------------------------------------------------------------------



                   MINNESOTA MINING AND MANUFACTURING COMPANY



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