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: UNKOVIC JOHN C (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	31333	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