MSA Safety Inc — Director's Dealing 2010

Dec 13, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MINE SAFETY APPLIANCES CO (MSA)
CIK: 0000066570
Period of Report: 2010-12-13

Reporting Person: LAMBERT WILLIAM M (Director, President and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-12-13	Common Stock, no par value	S	10075.0000	$30.8971	Disposed	95855.0000	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock, no par value	40000.0000	Indirect

Footnotes

F1: From this sale, 3,853 shares were sold to satisfy tax obligation resulting from option exercise of 12/8/2010.