SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* RYAN JOHN T III (Last) (First) (Middle) 121 GAMMA DRIVE RIDC INDUSTRIAL PARK (Street) PITTSBURGH PA 15238 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol MINE SAFETY APPLIANCES CO [ MSA ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director X 10% Owner X Officer (give title below) Other (specify below) Chairman & CEO
	3. Date of Earliest Transaction (Month/Day/Year) 02/21/2007
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, no par value	02/21/2007		A		7,914	A	$0	981,538	D
Common Stock, no par value	02/23/2007		G	V	6,204	D	$0	975,334	D
Common Stock, no par value	02/23/2007		G	V	1,748	D	$0	352,517	I	By Wife(1)
Preferred - 4-1/2% Cumulative								187	D
Common Stock, no par value								1,521,889	I	As Co-Trustee(2)
Common Stock, no par value								147,574	I	By Partnership(3)
Preferred - 4-1/2% Cumulative								93	I	By Testamentary Trust(4)
Common Stock, no par value								160,357	I	By Wife as Trustee(5)
Common Stock, no par value								474,156	I	Co-Trustee(6)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Incentive Stock Option	$44.105	02/21/2007		A		2,494		02/21/2010	02/21/2012	Common Stock, no par value	2,494	$44.105	2,494	D
Non-statutory Stock Option	$0(7)	02/21/2007		A		50,680		02/21/2010	02/21/2017	Common Stock, no par value	50,680	$40.095	50,680	D

Explanation of Responses:

1. I disclaim beneficial ownership of these shares.

2. Shares held in a trust of which I am a Trustee and in which a member of my immediate family is the beneficiary. I disclaim beneficial ownership of these shares.

3. Shares held by a family limited partnership of which I am a general partner and the other partners include members of my immediate family. I disclaim beneficial ownership of these shares except to the extent of my pecuniary interest.

4. Shares held in a testamentary trust of which I am not a trustee, in which my proportionate interest as an income beneficiary is represented by a 1/6 interest.

5. Shares held in trusts of which I am not a trustee and in which members of my immediate family are beneficiaries. I disclaim beneficial ownership of these shares.

6. Shares held in trusts of which I am a trustee and in which I and members of my immediate family are among the beneficiaries.

7. Conversion price is $40.095.

Remarks:

	Douglas K. McClaine, Attorney in Fact	02/23/2007
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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