3M CO — Director's Dealing 2007

May 9, 2007

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2007-05-08

Reporting Person: ALVARADO LINDA G (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2007-05-08	Common Stock	A	1242	$76.43	Acquired	7472	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	5352	Indirect