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3M Company

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March 28, 2013


Message from Inge: Important Information for 3M Employee Stockholders


As a 3M employee and stockholder, you contribute to 3M’s business growth and financial strength, you share in the risk and rewards, and you benefit from our Company’s success. I encourage you to both understand and vote on the proposals being considered at this year’s Annual Meeting.


In this email you’ll find the materials you need: Notice of the Annual Meeting and Proxy Statement, the 2012 Annual Report and helpful instructions. Your vote is very important; please enter it as soon as possible.


You are also cordially invited to attend 3M’s Annual Meeting of Stockholders at 10:00 a.m., CDT, on Tuesday, May 14, 2013 at the RiverCentre, 175 West Kellogg Boulevard, St. Paul, Minnesota.


Inge Thulin
Chairman of the Board, President and CEO









[                 ]


CONTROL NUMBER: [                  ]


You can enter your voting instructions and view the shareholder material at the Internet site below. If your browser supports secure transactions, you will automatically be directed to a secure site.


http://www.proxyvote.com/[                  ]


To access ProxyVote.com, you will need your four digit PIN:


— If you are an employee of 3M COMPANY, your PIN is the last four
digits of your Social Security number.


— If you are an employee of 3M COMPANY and do not have a Social
Security number or Taxpayer ID, your PIN will be the last four
digits of your 3M COMPANY employee ID number.


— If you have forgotten your PIN number, please follow the
instructions on www.proxyvote.com


Internet voting is accepted up to 10:59 p.m. Central Daylight Time on May 13, 2013 (or up to 10:59 p.m. CDT on May 9, 2013 for participants in 3M’s Voluntary Investment Plan and Employee Stock Ownership Plan and the 3M Savings Plan).


To view the documents below, you may need Adobe Acrobat Reader. To download the Adobe Reader, click the url address below:





The relevant supporting documentation can also be found at the following Internet site(s):


HTTP://materials.proxyvote.com/[     ]


HTTP://materials.proxyvote.com/[      ]


HTTP://materials.proxyvote.com/[      ]


To cancel or change your enrollment profile, please go to http://enroll.icsdelivery.com/mmm


There is no charge for this service, however costs associated with electronic access, such as usage charges from Internet access providers and telephone companies, must be borne by the stockholder.


You will also receive by mail in a few days an “Important Notice Regarding the Availability of Proxy Materials for the 3M Company Shareholder Meeting”, which is another way to inform you that the proxy materials are available on the Internet. If you follow the instructions in this e-mail to review the proxy materials and enter your vote on the Internet, you do not have to do anything with the Notice received by mail.


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