3M CO — Director's Dealing 2006

Aug 1, 2006

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: 3M CO (MMM)
CIK: 0000066740
Period of Report: 2006-07-31

Reporting Person: Smyth Margaret Mary (VICE PRESIDENT &CHF ACCTG OFF)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2006-07-31	Common Stock	P	1000	$70.784	Acquired	6414	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	211	Indirect