MSA Safety Inc — Director's Dealing 2010

Dec 10, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MINE SAFETY APPLIANCES CO (MSA)
CIK: 0000066570
Period of Report: 2010-12-08

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-12-08	Common Stock, no par value	M	20955.0000	$12.1388	Acquired	114291.0000	Direct
2010-12-08	Common Stock, no par value	F	8361.0000	$30.4200	Disposed	105930.0000	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-12-08	Non-statutory Stock Option	$12.1388	M	20955.0000	Disposed	2012-03-11	Common Stock, no par value (20955.0000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock, no par value	40000.0000	Indirect