MSA Safety Inc — Director's Dealing 2010

May 7, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

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

Reporting Person: SHAW L EDWARD JR (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-05-05	Common Stock, no par value	M	6144	$9.0295	Acquired	233631	Direct
2010-05-05	Common Stock, no par value	M	5238	$12.3754	Acquired	238869	Direct
2010-05-05	Common Stock, no par value	M	4851	$7.0736	Acquired	243720	Direct
2010-05-05	Common Stock, no par value	M	4122	$13.5675	Acquired	247842	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-05-05	Non-statutory Stock Option	$7.0736	M	4851	Disposed	2010-05-15	Common Stock, no par value (4851)	Direct
2010-05-05	Non-statutory Stock Option	$9.0295	M	6144	Disposed	2011-05-15	Common Stock, no par value (6144)	Direct
2010-05-05	Non-statutory Stock Option	$13.5675	M	4122	Disposed	2012-05-10	Common Stock, no par value (4122)	Direct
2010-05-05	Non-statutory Stock Option	$12.3754	M	5238	Disposed	2013-05-13	Common Stock, no par value (5238)	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

Footnotes

F1: Reflects redistribution of 113,988 shares from Wife's Grantor Retained Annuity Trust to shares held indirectly by Wife.

F2: Reflects increase in shares due to distribution from Wife's Grantor Retained Annuity Trust.