Washington, D.C.  20549

                                  SCHEDULE 13D

                   Under the Securities Exchange Act of 1934

                               (Amendment No. 2)

                        Mine Safety Appliances Company
                               (Name of Issuer)

                          Common Stock, no par value
                        (Title of Class of Securities)

                                  602720 10 4
                                (CUSIP Number)

                           Nelson W. Winter, Esquire
                                Reed Smith LLP
                               435 Sixth Avenue
                        Pittsburgh, Pennsylvania 15219
                                (412) 288-3310
          (Name, Address and Telephone Number of Person Authorized to
                      Receive Notices and Communications)

                                 June 27, 2000
            (Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition that is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following
box.   [_]*

- --------------
*  The information required on the remainder of this cover page shall not be
   deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
   Act of 1934 (the "Act") or otherwise subject to the liabilities of that
   section of the Act but shall be subject to all other provisions of the Act.

CUSIP NO.     602720 10 4

    1) Names of Reporting Persons, I.R.S. Identification Nos. of Above Persons
(entities only)

              John T. Ryan III

    2) Check the Appropriate Box if a Member of a Group (See Instructions)
       (b)    X

    3) SEC Use Only

    4) Source of Funds (See Instructions)    00

    5) Check if Disclosure of Legal Proceedings is Required Pursuant to Items
       2(d) or 2(e)

    6) Citizenship or Place of Organization      U.S.A.

     Number of        (7)  Sole Voting Power           600,287
     Shares Bene-                                    ---------
     Owned by         (8)  Shared Voting Power       1,220,523
     Each Report-                                    ---------
     ing Person
     With             (9)  Sole Dispositive Power      600,287

                     (10)  Shared Dispositive Power  2,345,523

    11)  Aggregate Amount Beneficially Owned by Each Reporting Person

- ---------

    12)  Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See

    13)  Percent of Class Represented by Amount in Row (11)    21.7%

    14)  Type of Reporting Person (See Instructions)     IN

Item 1.  Security and Issuer.

     Common Stock, no par value (the "Common Stock"), of Mine Safety Appliances
Company (the "Company"), P.O. Box 426, Pittsburgh, Pennsylvania  15230.

Item 2.  Identity and Background.

  (a)    Name of Person Filing:             John T. Ryan III

  (b)    Residence or Business Address:     Mine Safety Appliances Company
                                            P.O. Box 426
                                            Pittsburgh, PA  15230

  (c)    Present Principal Occupation:      Chairman and Chief Executive Officer
                                            of the Company.

Item 5.  Interest in Securities of the Issuer.

     See Items 7 through 11 and 13 of the cover page.

     As filed on July 7, 2000, Amendment No. 1 to the Schedule 13D indicated
that the undersigned and the other members of the Investment Committee of the
Trust for the Company's Non-Contributory Pension Plan for Employees shared both
voting and dispositive power over the 1,125,000 shares of Common Stock held by
the Trust.  This Amendment is filed to report that while the members of the
Investment Committee do share dispositive power over the shares of Common Stock
held in the Trust, sole voting power over these shares is held by PNC Bank,
N.A., as trustee of the Trust.  In this regard, see the Schedule 13G with
respect to the Company's Common Stock filed by PNC Bank, N.A. and its affiliated


     After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and

                                                        /s/ John T. Ryan III
                                                           John T. Ryan III

Date:  March 16, 2001