MSA Safety Inc — Director's Dealing 2010

May 18, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MINE SAFETY APPLIANCES CO (MSA)
CIK: 0000066570
Period of Report: 2010-05-14

Reporting Person: SHAW L EDWARD JR (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-05-14	Common Stock, no par value	A	1764	—	Acquired	249606	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-05-14	Non-statutory Stock Option	$29.33	A	3715	Acquired	2020-05-14	Common Stock, no par value (3715)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock, no par value	500000	Indirect
Common Stock, no par value	9921	Indirect
Common Stock, no par value	40430	Indirect
Common Stock, no par value	263443	Indirect
Common Stock, no par value	135440	Indirect