Exhibit 23
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (No. 333-121196) of Mine Safety Appliances Company of our report dated JuneĀ 26, 2006 relating to the financial statements and supplemental schedule of the MSA Retirement Savings Plan, which appears in this Form 11-K.
/s/ PricewaterhouseCoopers LLP
Pittsburgh, Pennsylvania
JuneĀ 26, 2006