Exhibit 3(i)

RESTATED ARTICLES

OF

MINE SAFETY APPLIANCES COMPANY

(As amended and restated May 23, 1986 and

as further amended through January 16, 2004)

Article 1st. The name of the corporation is MINE SAFETY APPLIANCES COMPANY (hereinafter the “Company”).

Article 2nd. The location and post office address of its current registered office in this Commonwealth is 201 North Braddock Avenue, Pittsburgh, Allegheny County, Pennsylvania 15208.

Article 3rd. The Company is organized under the provisions of the Business Corporation Law for the following purposes, which shall be construed independently of each other:

(a) To manufacture, develop, prepare, install, buy, sell, maintain, service, lease as lessor and lessee, import, export and otherwise deal in and with all types of appliances, equipment, apparatus, instruments, systems, clothing, chemicals, materials and other articles of commerce for industry and mines, both in this country and in foreign countries and territories;

(b) To purchase, lease or otherwise acquire, invest in, own, mortgage, pledge, lease, sell, assign and transfer or otherwise dispose of, trade, deal in and deal with real property and goods, wares, merchandise and other personal property of every class and description;

(c) To engage in mercantile, manufacturing, processing, research, development, trading and service businesses of any kind and character; and

(d) To invest in, and to aid by loans, by making guarantees and in any other manner, any business enterprise affiliated with the Company, or in which the Company has any direct or indirect interest, or the business of which is a direct or indirect benefit to the Company.

The Company shall also have unlimited power to engage in and to do any lawful act concerning any or all lawful business for which corporations may be incorporated under the Business Corporation Law.

Article 4th. The term of its existence is perpetual.

Article 5th. The aggregate number of shares which the Company shall have authority to issue shall be 181,100,000 shares, divided into three classes so that 100,000 shares shall be 4½% Cumulative Preferred Stock of the par value of $50 per share (hereinafter referred to as the “4½% Preferred Stock”), 1,000,000 shares shall be Second Cumulative Preferred Stock of the par value of $10 per share (hereinafter referred to as the “Second Preferred Stock”), and 180,000,000 shares shall be Common Stock without par value.

At the close of business on the date this amendment becomes effective (such time and date being hereinafter referred to as the “Record Date”), each share of Common Stock without par value which is then issued and outstanding or held by the Company in its treasury shall be converted into and become three fully paid and nonassessable shares of Common Stock without par value (hereinafter “Common Stock”). Certificates representing shares of Common Stock issued and outstanding at the Record Date shall not be required to be surrendered or exchanged and shall thereafter represent the same number of shares of Common Stock as previously. As promptly as practicable following the Record Date, the Company shall

cause to be issued to each holder of record of Common Stock at the Record Date a certificate or certificates representing two shares of Common Stock for each share held of record at the Record Date.’” [First two paragraphs of Article 5^th are as amended effective January 16, 2004.]

A description of said classes of stock and a statement of the preferences, qualifications, privileges, limitations, options, conversion rights, and other special or relative rights granted to or imposed upon the shares of each class are as follows:

Section I. 4 1/2% Cumulative Preferred Stock.

A. DIVIDENDS. The holders of 4 1/2% Preferred Stock shall be entitled to receive and the Company shall be required to pay, when and as declared by the Board of Directors, out of any assets or funds of the Company available for the payment of dividends in accordance with law, dividends at the rate of 4 l/2% per annum payable quarterly upon the first day of March, June, September and December in each year. Dividends on the 4 1/2% Preferred Stock shall be cumulative from the first day of the quarterly dividend period in which such shares are issued, whether or not earned or declared, but arrears in payment thereof shall not bear interest. The said 4 1/2% Preferred Stock shall be preferred over the shares of all other classes of the Company’s stock (hereinafter referred to as “Junior Stock”). No dividends shall be paid upon, nor shall any distribution be ordered or made, in respect of the Junior Stock of the Company in any year while any dividends are accumulated and unpaid upon the 4 1/2% Preferred Stock and unless and until dividends at the rate aforesaid for the current year shall have been declared and paid or set apart for the 4 1/2% Preferred Stock. So long as any of the 4 1/2% Preferred Stock shall be outstanding, the Company shall not pay or declare any dividend (except dividends payable in its shares of a class ranking junior to the 4 1/2% Preferred Stock as to dividends and assets) on any shares of Junior Stock which will reduce the earned surplus of the Company below an amount equal to 50% of the par value of the shares of said 4 1/2% Preferred Stock outstanding as of the time any such calculation is required to be made.

B. REDEMPTION. On and after December 1, 1955, the Board of Directors of the Company, at its option, may redeem at any time or from time to time the whole or any part of the 4 1/2% Preferred Stock at the redemption price of $52.50 per share plus all accrued and unpaid dividends on such shares at the date fixed for redemption. Notice of each such intended redemption shall be given by publication at least once in each of two successive calendar weeks, in each case on any day of the week, in a daily newspaper of general circulation in the City of Pittsburgh, Allegheny County, Pennsylvania, the first publication to be made not less than thirty (30) days nor more than sixty (60) days prior to the date fixed for such redemption. A similar notice shall be mailed by the Company, postage prepaid, not less than thirty (30) days nor more than sixty (60) days prior to the date fixed for such redemption, to the holders of record of the shares to be redeemed, addressed to each such shareholder at his address as the same appears upon the stock transfer books of the Company, but failure to mail such notice or any defect therein or in the mailing thereof shall not affect the validity of the proceedings for the redemption of any shares of the 4 1/2% Preferred Stock to be redeemed, and the mailing of such notice shall not be a condition of such redemption. In case of redemption of only a part of the outstanding shares of the 4 1/2% Preferred Stock, the shares to be redeemed shall be selected by lot or pro rata as the Board of Directors shall determine. On or after the date of redemption stated in such notice, each holder of the shares of the 4 1/2% Preferred Stock called for redemption shall surrender his certificate for such shares to the Company at the place designated in such notice, and shall thereupon be entitled to receive payment of the redemption price. In case less than all the shares represented by such surrendered certificate are redeemed, a new certificate shall be issued representing the non-redeemed shares. If the aforesaid notice of redemption shall have been duly published, and if, on or before the redemption date specified in such notice, the funds necessary for such redemption shall have been deposited in trust for such purpose with a bank or trust company in good standing, designated in such notice, doing business in the City of

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Pittsburgh, Pennsylvania, from and after the date of redemption so designated, notwithstanding that any certificate for shares of 4 1/2% Preferred Stock so called for redemption shall not have been surrendered for cancellation, the shares represented thereby so called for redemption shall no longer be deemed outstanding, the dividends on the number of shares called for redemption represented thereby shall cease to accrue, and all rights with respect to the shares of 4 1/2% Preferred Stock so called for redemption shall forthwith after such redemption date cease and determine, except only the right of the holder to receive out of the moneys so deposited the redemption price, but without interest thereon. None of the 4 1/2% Preferred Stock so redeemed by the Company shall be reissued, and no 4 1/2% Preferred Stock shall be issued in lieu thereof or in exchange therefor, and the Company shall from time to time cause all of such 4 1/2% Preferred Stock so redeemed to be cancelled and its capital reduced in the manner provided by law.

Nothing in this Subparagraph B contained shall prevent the purchase by the Company of the whole or any part of the 4 1/2% Preferred Stock, so long as dividends thereon are not in arrears, at public or private sale, or upon call for tender, upon such terms as the Board of Directors may prescribe, and at prices not to exceed the redemption price thereof and all accrued and unpaid dividends on the shares so purchased to the date of purchase.

C. DISTRIBUTION ON LIQUIDATION OR DISSOLUTION. The 4 1/2% Preferred Stock shall be preferred over all shares of Junior Stock as to assets, and in the event of any liquidation or dissolution or winding up of the Company, the holders of such stock shall be entitled to receive out of the assets of the Company available for distribution to its shareholders, whether from capital, surplus or earnings, the preferential amounts hereinafter provided for each share held by them before any distribution of the assets shall be made to the holders of shares of Junior Stock, but the holders of such 4 1/2% Preferred Stock shall be entitled to no other or further amounts. Upon liquidation, dissolution or winding up of the Company, the holders of the 4 1/2% Preferred Stock shall be entitled to receive the sum of $50 per share if such liquidation, dissolution or winding up be involuntary, and the redemption price of such stock hereinbefore provided if such liquidation, dissolution or winding up be voluntary, together in either case with all accrued and unpaid dividends on such shares to the date fixed for payment of such preferential amounts.

D. VOTING RIGHTS. Except as otherwise herein provided or otherwise required by law, the entire voting power of the Company shall be vested exclusively in the holders of its Junior Stock. If at any time dividends payable on the 4 1/2% Preferred Stock shall be accrued and unpaid in an amount equivalent to or exceeding six quarterly dividends then, and in such event, the holders of the 4 1/2% Preferred Stock shall be entitled, voting separately as a class, to elect two directors, at all elections of directors, in addition to the directors to be elected by the holders of the Junior Stock, but such voting power and the terms of office of any directors so elected by the holders of the 4 l/2% Preferred Stock shall continue only until, and shall cease when, all accrued and unpaid dividends on such stock to the beginning of the then current dividend period shall have been paid in full or funds for the payment thereof shall have been set apart, subject always to the same provisions for the revesting of such voting power in the case of any similar future default or defaults. In such election, the holders of 4 1/2% Preferred Stock shall be entitled to one vote per share. A meeting of the holders of the 4 1/2% Preferred Stock having voting power may be called upon notice to such holders similar to that provided in the By-Laws for shareholders’ meetings, at the expense of the Company at any time after the accrual of such voting power and prior to the next annual meeting of shareholders (and the termination of such voting power), by the holders of not less than 10% of the 4 1/2% Preferred Stock then outstanding.

E. RESTRICTION ON CORPORATE ACTION. Except upon the affirmative vote or written consent of the holders of record of at least 60% of the aggregate number of shares of the 4 1/2% Preferred Stock at the time outstanding (in addition to any other vote or consent at the time required by law) the

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Company shall not in any manner, whether by amendment of the Articles, by sale of all or substantially all the Company’s assets or business, by merger or consolidation, or otherwise.

(a) amend, alter or repeal any of the provisions of the Articles so as to affect adversely the relative rights, preferences or powers of the 4 1/2% Preferred Stock; or

(b) authorize, or increase the authorized amount of, the 4 1/2% Preferred Stock or any class or series of stock ranking senior to or on a parity with the 4 1/2% Preferred Stock in the payment of dividends or the preferential distribution of assets;

Provided, however, that no such vote or consent shall be required for any sale of all or substantially all the Company’s assets or business or for any merger or consolidation if (i) such holder of shares of 4 1/2% Preferred Stock immediately prior thereto shall thereafter and in connection therewith continue to hold or shall receive the same number of shares of preferred stock, with the same relative rights, preferences and powers, of such acquiring, surviving or resulting corporation, or (ii) the authorized capital stock of the acquiring, surviving or resulting corporation immediately thereafter shall include only classes of stock for which no such vote or consent would have been required for the authorization thereof under clauses (a) or (b) above; and Provided Further, However, that no such consent shall be required under the provisions of this Subparagraph E if, at or prior to the time when the act with respect to which such vote would otherwise be required shall be effected, provision is made in accordance with the Articles for the redemption of all shares of 4 1/2% Preferred Stock at the time outstanding.

For the purpose of obtaining the affirmative vote or written consent of the holders of any specified number of shares of 4 1/2% Preferred Stock at the time outstanding there shall be excluded, in computing the number of shares outstanding, and there shall be excluded from voting, all shares of such stock owned directly or indirectly by or for the account of the Company.

Section II. Second Cumulative Preferred Stock.

A. AUTHORITY OF BOARD; VARIATIONS IN SERIES. The shares of Second Preferred Stock may be divided into and issued in series. Authority is hereby expressly vested in the Board of Directors of the Company, at any time or from time to time, by resolution to divide any or all of the shares of the Second Preferred Stock into series, and to fix and determine the designation and the relative rights and preferences of any series so established, to the fullest extent now or hereafter permitted by the laws of the Commonwealth of Pennsylvania, including, but not limited to, the variations between different series in the following respects:

(i) the rate of dividend upon the shares of such series;

(ii) the price or prices at which, and the terms and conditions on which, the shares of such series may be redeemed at the option of the Company;

(iii) the amount or amounts payable upon the shares of such series in the event of voluntary or involuntary liquidation;

(iv) the obligation, if any, of the Company to purchase, redeem and/or retire shares of such series pursuant to a sinking fund;

(v) the terms and conditions upon which shares of such series may be converted, in the event that the shares of such series are issued with the privilege of conversion;

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(vi) the voting rights, if any, of the holders of shares of such series; and

(vii) the relative seniority, parity or junior rank of such series with respect to other series of Second Preferred Stock then or thereafter to be issued.

The Board of Directors is hereby expressly authorized (a) to fix the number of shares which shall constitute any series of Second Preferred Stock, which number may at any time or from time to time be increased or decreased (but not below the number of shares thereof then outstanding), unless the Board of Directors shall have otherwise provided in establishing such series; (b) to fix the dates in each year on which dividends upon any such series shall be payable, and the date or dates from which such dividends shall be cumulative; and (c) to fix and determine such other terms, limitations and relative rights and preferences, if any, of any such series as it may now or hereafter lawfully do under the laws of the Commonwealth of Pennsylvania.

B. VOTING RIGHTS. (i) Except as otherwise provided in these Articles or in the resolution or resolutions establishing any series of Second Preferred Stock, the holders of Common Stock shall exclusively have the sole voting power.

(ii) If at the time of any annual meeting of shareholders a default in preference dividends on the Second Preferred Stock, as hereinafter defined, shall exist, the number of directors constituting the Board of Directors of the Company shall be increased by two, and the holders of the Second Preferred Stock, voting separately as a class without regard to series, shall, to the exclusion of the holders of the 4 1/2% Preferred Stock (whose voting rights upon default in dividends are hereinabove described in Section I) and the holders of Common Stock, have the right at such meeting to elect two directors of the Company to fill such newly created directorships. Such right shall continue until there are no dividends in arrears upon the Second Preferred Stock. Each director elected by the holders of the Second Preferred Stock, voting as a class as aforesaid (herein called a Second Preferred Director), shall continue to serve as such director for the full term for which he shall have been elected, notwithstanding that prior to the end of such term a default in preference dividends shall cease to exist. Any Second Preferred Director may be removed by, and shall not be removed except by, the vote of the holders of record of the outstanding shares of Second Preferred Stock, voting separately as a class without regard to series, at a meeting of the shareholders, or of the holders of shares of Second Preferred Stock, called for the purpose. So long as a default in any preference dividends on the Second Preferred Stock shall exist any vacancy in the office of a Second Preferred Director may be filled either by an instrument in writing signed by the remaining Second Preferred Director and filed with the Company or by the vote of the holders of the outstanding Second Preferred Stock, voting separately as a class without regard to series. Whenever the term of office of the Second Preferred Directors shall end and a default in preference dividends shall no longer exist, the number of directors shall be the number otherwise specified without reference to the provisions of this Subparagraph B. For the purposes of this Subpara- graph B, a default in preference dividends on the Second Preferred Stock shall be deemed to have occurred whenever the amount of dividends accrued or in arrears upon any series of the Second Preferred Stock shall be equivalent to six full quarter-yearly (or three full semi-annual) dividends or more, and, having so occurred, such default shall be deemed to exist thereafter until all dividends accrued or in arrears on all shares of Second Preferred Stock then outstanding, of each series, shall have been paid to the end of the last preceding quarterly dividend period.

(iii) Except upon the affirmative vote of the holders of at least 60% of the aggregate number of shares of Second Preferred Stock at the time outstanding (in addition to any other vote at the time required by law), the Company shall not in any manner, whether by amendment of the Articles, by sale of all or substantially all the Company’s assets or business by merger or consolidation, or otherwise,

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(a) amend, alter or repeal any of the provisions of the Articles so as to affect adversely the relative rights, preferences or powers of the Second Preferred Stock, or

(b) authorize, or increase the authorized amount of, the Second Preferred Stock or any class or series of stock ranking senior to or on a parity with the Second Preferred Stock in the payment of dividends or the preferential distribution of assets;

Provided, However, that no such vote shall be required for any sale of all or substantially all the Company’s assets or business or for any merger or consolidation if (x) each holder of shares of Second Preferred Stock immediately prior thereto shall thereafter and in connection therewith continue to hold or shall receive the same number of shares of preferred stock, with the same relative rights, preferences and powers, of such acquiring, surviving or resulting corporation, and (y) the authorized capital stock of the acquiring, surviving or resulting corporation immediately thereafter shall include only classes of stock for which no such vote would have been required for the authorization thereof under clauses (a) or (b) above; and Provided Further, However, that no such vote shall be required under the provisions of clause (iii) of this Subparagraph B if, at or prior to the time when the act with respect to which such vote would otherwise be required shall be effected, provision is made in accordance with the Articles for the redemption of all shares of Second Preferred Stock at the time outstanding.

Section III. Preemptive Rights.

No holder of any shares of any class of stock shall be entitled to have any right, as such holder, to subscribe for or to purchase

(a) any part of any issue of shares of any class whatsoever, which the Company may hereafter issue or sell; or

(b) any obligations or securities of whatsoever kind and character which the Company may hereafter issue or sell, convertible into or exchangeable for any shares of the Company of any other class or classes, or to which shall be attached or shall appertain any warrant or warrants or other instruments which shall confer upon the holder or owner thereof the right to subscribe for or purchase from the Company any of its shares of any class or classes;

whether such shares, obligations or securities hereafter issued shall be part of the number of shares authorized by the Articles as now or hereafter amended, or whether such shares, obligations or securities hereafter issued shall be part of any new or additional issue of shares, obligations or securities of any class whatsoever. The approval of this amendment shall be effective to eliminate and deny any preemptive rights which may have existed in respect of any outstanding shares.

Section IV. Non-Cumulative Voting of Second Preferred Stock and Common Stock.

No holder of Second Preferred Stock and no holder of Common Stock shall have any right to cumulate his votes and cast them for one candidate or distribute them among two or more candidates in any election of directors.

Article 6th. Definitions; Interpretation.

6.1. Definitions. As used in Articles 6th, 7th, 10th, 11th and 12th of the Articles of the Company, the following terms shall have the following meanings:

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(a) The term “Acquiring Person” at any particular time shall mean any Person (other than the Company or any Subsidiary of the Company or a trustee holding stock for the benefit of the employees of the Company or any of its Subsidiaries pursuant to one or more employee benefit plans or arrangements) which

(i) Beneficially Owns, or any Person which is a member of a group acting in concert which Beneficially Owns in the aggregate, shares representing 20% or more of the Voting Power of the outstanding Voting Stock of the Company;

(ii) is at such time a director of the Company and at any time within the two-year period immediately prior to such time was the Beneficial Owner of shares representing 20% or more of the Voting Power of the outstanding Voting Stock of the Company; or

(iii) is at such time an assignee of or otherwise has succeeded to the Beneficial Ownership of any shares of Voting Stock which were at any time within the two-year period immediately prior to such time Beneficially Owned by any Acquiring Person, if such assignment or succession shall have occurred in the course of a transaction or series of transactions not involving a public offering within the meaning of the Securities Act of 1933;

except that the term “Acquiring Person” shall not include a Person or group which on February 14, 1986, Beneficially Owned 20% or more of the Voting Power of the outstanding Voting Stock of the Company. A group shall be deemed to continue in existence, and not to have become a new group, notwithstanding the addition or deletion of particular Persons owning shares of Voting Stock to an existing group. With respect to any particular transaction, the term “Acquiring Person” means any Acquiring Person involved in such transaction, any Affiliate or Associate of such Acquiring Person, and any other member of a group acting in concert with such Person. Where any reference is made to a transaction involving, or ownership of securities by, an Acquiring Person, it shall mean and include one or more transactions involving different Persons all included within the definition of “Acquiring Person”, or ownership of securities by any or all of such Persons.

(b) An “Affiliate” of, or a Person “Affiliated” with, a specific Person means a Person (other than the Company or a Subsidiary of the Company) that directly, or indirectly through one or more intermediaries, controls, or is controlled by, or is under common control with, the Person specified.

(c) The term “Associate”, used to indicate a relationship with any Person, means (i) any director, officer or partner of, or the Beneficial Owner of 10% or more of any class of equity securities of, such Person or any of its Affiliates, (ii) any corporation or organization (other than the Company or a Subsidiary of the Company) of which such Person is a director, officer or partner or is the Beneficial Owner of 10% or more of any class of equity securities, (iii) any trust or other estate in which such Person has a substantial beneficial interest or as to which such Person serves as trustee or in a similar fiduciary capacity, (iv) any relative or spouse of such Person, or any relative of such spouse, who has the same home as such Person or who is a director or officer of the Company or any of its Subsidiaries or (v) any investment company registered under the Investment Company Act of 1940 for which such Person or any Affiliate or Associate of such Person serves as investment advisor.

(d) A Person shall be a “Beneficial Owner” of any Voting Stock:

(i) which such Person or any of its Affiliates or Associates beneficially owns, directly or indirectly; or

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(ii) which such Person or any of its Affiliates or Associates has (A) the right to acquire (whether or not such right is exercisable immediately) pursuant to any agreement, arrangement or understanding or upon the exercise of conversion rights, exchange rights, warrants or options, revocation of a trust, or otherwise, or (B) the right to vote pursuant to any agreement, arrangement or understanding; or

(iii) which is beneficially owned, directly or indirectly, by any other Person with which such Person or any of its Affiliates or Associates has any agreement, arrangement or understanding for the purpose of acquiring, holding, voting or disposing of any shares of Voting Stock.

For the purpose of determining whether a Person is an Acquiring Person pursuant to paragraph (a) of this Section 6.1, the number of shares of Voting Stock deemed to be outstanding shall include shares deemed owned by such Person through application of this paragraph (d) but shall not include any other shares of Voting Stock which may be issuable pursuant to any agreement, arrangement or understanding, or upon exercise of conversion rights, warrants or options, or otherwise.

(e) The term “Business Combination” shall mean:

(i) any merger, consolidation or share exchange of the Company or a Subsidiary of the Company with an Acquiring Person or into or with another Person which is or after such merger, consolidation or share exchange would be an Affiliate or an Associate of an Acquiring Person, in each case without regard to which entity is the surviving entity;

(ii) any sale, lease, exchange or other disposition (whether in one transaction or a series of related transactions), including without limitation a mortgage or any other security device, of all or any Substantial Part of the assets of the Company (including without limitation any voting securities of a Subsidiary of the Company) or of a Subsidiary of the Company to an Acquiring Person or of all or any Substantial Part of the assets of an Acquiring Person to the Company or a Subsidiary of the Company;

(iii) the issuance, transfer or delivery of any securities of the Company or a Subsidiary of the Company by the Company or any of its Subsidiaries to an Acquiring Person, or of any securities of an Acquiring Person by the Acquiring Person to the Company or a Subsidiary of the Company (other than issuance or transfer of securities which is effected or offered on a pro rata basis to all shareholders of the Company or of the Acquiring Person, as the case may be):

(iv) any recapitalization, reorganization, reclassification of securities (including any reverse stock split) or other transaction or series of related transactions involving the Company that would have the effect, directly or indirectly, of increasing the voting power of an Acquiring Person; or

(v) the adoption of any plan or proposal for the liquidation or dissolution of the Company in which an Acquiring Person owning shares of any class of the Company is treated differently from other shareholders of the same class (other than dissenting shareholders exercising statutory appraisal rights).

As used in this definition, a “series of related transactions” shall be deemed to include not only a series of transactions with the same Acquiring Person but also a series of separate transactions with different Persons all included in the definition of Acquiring Person.

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(f) The Term “Disinterested Director” at any time shall mean any director of the Company at the time in office except that if at any time there exists an Acquiring Person, then the term shall mean a director of the Company who is unaffiliated with and not a representative of any Acquiring Person and either (i) was a director of the Company immediately prior to the time that the Acquiring Person became an Acquiring Person or (ii) shall have been recommended for election by a majority of the then Disinterested Directors. Where any provision in the Articles calls for a determination, recommendation or approval by a majority of the Disinterested Directors, if there is at any particular relevant time no Disinterested Director in office, then such provision shall be deemed to be satisfied if the Board, by a two-thirds vote of all the Directors in office, makes or gives such determination, recommendation or approval.

(g) The term “Fair Market Value” means: (i) in the case of stock, the highest closing sale price on the date in question of a share of such stock on the Composite Tape for the New York Stock Exchange Listed Stocks, or, if not so quoted, on the New York Stock Exchange, or if not so listed, on the principal United States securities exchange registered under the Securities Exchange Act of 1934 on which such stock is listed, or, if not so listed, the closing sale or, if none, the closing bid quotation with respect to a share of such stock on the date in question on the National Association of Securities Dealers, Inc. Automated Quotations System or any system then in use, or if no such quotations are available, the fair market value on the date in question of a share of such stock without regard to any depreciation thereof in consequence of any Business Combination then proposed, as determined by a majority of the Disinterested Directors in good faith; and (ii) in the case of property other than cash or stock, the fair market value of such property on the date in question as determined by a majority of the Disinterested Directors in good faith.

(h) The term “Person” shall mean any individual, partnership, corporation, group or other entity. When two or more Persons act as a partnership, limited partnership, syndicate, association or other group for the purpose of acquiring, holding or disposing of shares of stock, such partnership, syndicate, association or group shall be deemed a “Person”. As used herein, the pronouns “which”, “that” and “it” in relation to Persons that are individuals shall be construed to mean who” or “whom”, “he” or “she”, and “him” or “her”, as appropriate.

(i) The term “Subsidiary” of any Person shall mean any corporation of which a majority of the Voting Power of the Voting Stock is Beneficially Owned by such Person directly or indirectly through other Subsidiaries of such Person.

(j) The term “Substantial Part” of the assets of any Person shall mean assets having a book value or Fair Market Value, whichever is greater, equal to 10% or more of the total assets reflected on any balance sheet of such Person and its Subsidiaries as of a date no earlier than six months prior to the time the determination is being made.

(k) A specified percentage of “Voting Power”, with reference to any matter being voted upon by the shareholders, shall mean such number of shares of stock as shall enable the holders thereof to cast such percentage of the total number of votes entitled to be cast by holders of shares entitled to vote thereon.

(l) The term “Voting Stock” at any time shall mean outstanding shares of capital stock of a corporation entitled to vote at its next annual election of directors (without consideration of the rights of any class of stock other than the Common Stock to elect directors by a separate class vote).

6.2. Authority of Disinterested Directors. The Disinterested Directors, by a majority vote, are authorized to determine on the basis of information known to them after reasonable inquiry: (i) whether a

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Person is an Acquiring Person, (ii) the number of shares of Voting Stock Beneficially Owned by any Person, (iii) whether a Person is an Affiliate or Associate of another, (iv) whether certain assets constitute a Substantial Part of the assets of any Person and (v) any other fact required to be determined in the application of Articles 6th, 7th, 10th, 11th or 12th of the Articles of the Company. The Disinterested Directors, by a majority vote, are authorized to interpret all the terms and provisions of Articles 6th, 7th, 10th, 11th or 12th of the Articles of the Company. Any such determination or interpretation made in good faith shall be binding and conclusive on all parties.

6.3. Fiduciary Obligations. Nothing contained in Articles 6th, 7th, 10th, 11th or 12th of the Articles shall be construed to relieve any Acquiring Person from any fiduciary obligation imposed by law.

Article 7th. Repurchase Rights.

7.1. Triggering Events. Except as provided below, in the event that any Acquiring Person (hereinafter referred to as a “40% Shareholder”) becomes the Beneficial Owner of shares representing more than forty percent of the Voting Power of the outstanding Voting Stock of the Company, each Person who is a holder of shares of Voting Stock of the Company at any time until and including the 90th day following the date the notice referred to in Section 7.2 below is mailed, other than the 40% Shareholder or a transferee of the 40% Shareholder, shall have the right, until and including such 90th day, to have some or all of the shares of Voting Stock held by such holder repurchased by the Company at the Repurchase Price and in the manner set forth in this Article 7th. Any holder of securities convertible into shares of Voting Stock, or of options, warrants or rights to acquire shares of Voting Stock, other than the 40% Shareholder or a transferee of the 40% Shareholder, who converts such securities or exercises such options, warrants or rights after such an event and on or prior to the 90th day following the date the notice aforesaid is mailed, shall have the same right (except as provided below) to have the shares of Voting Stock to be received upon such conversion or exercise repurchased at the Repurchase Price. No person shall have any right to have shares of Voting Stock repurchased by the Company pursuant to this Article (i) if a determination that the acquisition of shares by the 40% Shareholder is in the best interests of the Company and its shareholders shall have been expressly made by a resolution duly adopted by a majority vote of the Disinterested Directors within 20 days following the date on which the Company receives credible notice that an Acquiring Person has become a 40% Shareholder (the “Effective Date”), or (ii) if such repurchase is at the time prohibited by the general corporate law of the Company’s state of incorporation.

7.2. Notice. If holders of shares of Voting Stock become entitled to have their shares repurchased as provided in Section 7.1, then not later than 90 days following the Effective Date, the Company shall give written notice, by first class mail, postage prepaid, at the address shown on the records of the Company, to each holder of record of shares of Voting Stock other than the 40% Shareholder (and to any other person known by the Company to have rights to demand repurchase pursuant to Section 7.1 as of any date on or after the Effective Date), advising each such holder or other person of the right to have shares repurchased and the procedures for such repurchase, and setting forth the Repurchase Price. In the event that the Company fails to give notice as required by this Section 7.2, any Person entitled to receive such notice may within twenty days thereafter serve written demand upon the Company to give such notice. If within twenty days after the receipt of written demand the Company fails to give the required notice, such Person may at the expense and on behalf of the Company take reasonable action as may be appropriate to give notice or to cause notice to be given pursuant to this Section 7.2.

7.3. Repurchase Price. The Repurchase Price shall be the greater amount determined by a majority vote of the Disinterested Directors on either of the following bases, but in no event shall the Repurchase Price be less than the amount of its involuntary liquidation preference, in the case of preferred

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stock, and otherwise the amount of shareholders’ equity per share of the particular class or series as determined in accordance with generally accepted accounting principles and as reflected in any report published by the Company or filed with any governmental agency as at the end of the latest fiscal quarter for which such a report has been published or filed prior to the notice to shareholders referred to in Section 7.2:

(i) the highest per share price (including any brokerage commissions, transfer taxes, dealer management compensation and soliciting dealers’ fees) that can be determined to have been paid by the 40% Shareholder for any shares of Voting Stock of the particular class or series acquired by it at any time; for this purpose, if the consideration paid in any such acquisition of shares by a 40% Shareholder consisted, in whole or in part, of consideration other than cash, the Disinterested Directors by a majority vote shall take such action as in their judgment they deem appropriate to establish the cash value of such consideration, but such valuation shall not be less than the cash value, if any, ascribed to such consideration by the 40% Shareholder; and

(ii) the highest Fair Market Value per share of the particular class or series at any time during the three months prior to the Effective Date.

The determination to be made pursuant to this Section 7.3, when made by the Disinterested Directors acting in good faith on the basis of such information and assistance as was then reasonably available for such purpose, shall be conclusive and binding upon the Company and its shareholders, including any Person referred to in Section 7.1.

7.4. Repurchase Agent. I f holders of shares of Voting Stock become entitled to have their shares repurchased as provided in Section 7.1, the Board of Directors shall designate a Repurchase Agent, which shall be a corporation or association (i) organized and doing business under the laws of the United States or any State, (ii) subject to supervision or examination by Federal or State authority, (iii) having combined capital and surplus of at least $50,000,000 and (iv) having the power to exercise corporate trust powers.

7.5. Election to Have Shares Repurchased. For a period of 90 days from the date of the mailing of the notice, holders of shares of Voting Stock and other persons entitled to have shares of Voting Stock repurchased pursuant to this Article 7th may, at their option, deposit certificates representing all or less than all shares of Voting Stock held of record by them with the Repurchase Agent together with written notice that the holder elects to have all or a specified number of such shares repurchased pursuant to this Article 7th. Repurchase of shares evidenced by certificates deposited in proper form with the Repurchase Agent shall be deemed to have been effected at the close of business on the 90th day after the date of the mailing of the notice.

7.6. Deposit and Payment of Repurchase Price. Promptly after the end of the 90-day period referred to in Section 7.5, the Company shall deposit in trust with the Repurchase Agent cash in an amount equal to the aggregate Repurchase Price of all of the shares of Voting Stock deposited with the Repurchase Agent for purposes of repurchase. As soon as practicable after receipt by the Repurchase Agent of the cash deposit, the Repurchase Agent shall issue checks payable to the order of the persons entitled to receive the Repurchase Price of the shares of Voting Stock in respect of which such cash deposit was made.

7.7. Pro Rata Repurchase. If the Company is unable to repurchase all shares deposited for repurchase because of limitations upon repurchase contained in the general corporation law of the Company’s state of incorporation, the Company shall promptly deposit with the Repurchase Agent cash in the maximum amount which may be used for the repurchase of shares of Voting Stock. In the event of

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deposit of less than the full aggregate Repurchase Price pursuant to the provisions of this Section 7.7, the Repurchase Agent shall use the amount so deposited to repurchase the deposited shares pro tanto, in proportion to the Repurchase Price of the shares deposited by each shareholder for repurchase. Certificates representing all shares which remain unpurchased shall be returned to the depositors thereof as soon as practicable thereafter and there shall be no further repurchase rights with respect to such shares arising in connection with the transactions already completed.

7.8. Vote Needed to Amend. In addition to any vote required by any other provisions of law, the Articles or the By-Laws of the Company, the affirmative vote of the holders of at least a majority of the outstanding Voting Power of the Voting Stock which is not Beneficially Owned, directly or indirectly, by an Acquiring Person, shall be required to amend, alter, change or repeal, or adopt any provision inconsistent with, this Article 7th (including the provisions in Article 6th which are applicable to this Article 7th), unless such action has been previously approved by a majority vote of the Disinterested Directors.

7.9. Applicability of BCL Section 910; Suspension of Article 7th. Section 910 of the Pennsylvania Business Corporation Law (“BCL Section 910”) shall be applicable to the Company, and the provision of the By-Laws providing to the contrary is hereby repealed. For so long as BCL Section 910 as in effect on the date of approval by the Board of Directors of this Section 7.9 (the “Approval Date”) or amendatory or replacement legislation substantially equivalent in effect thereto shall remain in effect and applicable to the Company, Sections 7.1 through 7.8 of this Article 7th shall be suspended. In the event that the Disinterested Directors by majority vote shall determine (the date of any such determination being referred to herein as the “Determination Date”) that BCL Section 910 has been repealed in whole or in part or invalidated in whole or in part by any court or amended or replaced by other legislation such that provisions substantially equivalent in effect to BCL Section 910 as in effect on the Approval Date shall not be applicable to the Company, then unless and until such determination shall be rescinded (whether by reason of further legislation or court decisions or otherwise) by a majority vote of the Disinterested Directors, Sections 7.1 through 7.8 of this Article 7th shall no longer be suspended and shall apply in the event that any Acquiring Person is on the Determination Date or thereafter becomes a 40% Shareholder. In the event that the Company has received prior to the Determination Date credible notice that an Acquiring Person has become a 40% Shareholder, then, notwithstanding Section 7.1, the term “Effective Date” as used in this Article 7th shall mean the Determination Date. In determining whether provisions substantially equivalent in effect to those of BCL Section 910 on the Approval Date remain in effect and applicable to the Company, the Disinterested Directors may consider, in addition to whether any legislation then applicable to the Company provides substantially equivalent or greater rights to the shareholders of the Company, whether such legislation contains exclusions from the coverage of such legislation which are in practical effect substantially equivalent in coverage to those provided in clauses (a), (b) and (c) of BCL Section 910(B)(2)(ii) as in effect on the Approval Date. Nothing contained in this Section 7.9 shall prevent the Board of Directors from exercising any right provided by any amendment to BCL Section 910 or any replacement or other legislation to opt out from coverage of such legislation and, if appropriate, determining on such basis that the suspension of Articles 7.1 through 7.8 provided for herein has been terminated. [Article 7.9 added April 27, 1989.]

Article 8th. Except as provided in subparagraph B below, no corporate action of a character described in subparagraph A below, and no agreement, plan or resolution providing therefor, shall be valid or binding upon the Company unless such corporate action shall have been approved in compliance with all applicable provisions of the Business Corporation Law and these Articles and shall have been authorized by the affirmative vote of at least seventy-five percent of the outstanding shares of Common Stock entitled to vote, given in person or by proxy, at a meeting called for such purpose.

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A. Corporate actions subject to the voting requirements of this Article 8th shall be:

(i) any merger or consolidation to which the Company and an interested person (as defined in subparagraph C of this Article 8th) are parties; or

(ii) any sale, lease, exchange or other disposition, in a single transaction or series of related transactions, of all or substantially all or a substantial part of the properties or assets of the Company to an interested person; or

(iii) any transaction of a character described in clause (i) or (ii) above involving an affiliate or an associate of an interested person or involving an associate of any such affiliate or involving an affiliate of an associate of an interested person; or

(iv) removal of the entire Board of Directors or any member of the Board of Directors without cause.

B. The voting requirements of this Article shall not apply to any transaction of a character described in clause (i), (ii) or (iii) of subparagraph A above should any of the following obtain with respect to the transaction:

(a) The Board of Directors shall have approved the transaction upon the vote of not less than a majority prior to the time the interested person referred to in subparagraph A above became an interested person.

(b) The Board of Directors shall have approved the transaction prior to consummation thereof upon the vote of not less than a majority disregarding the vote of each director who was an interested person referred to in subparagraph A above, or an affiliate, associate or agent of such interested person, or an associate or agent of any such affiliate.

C. For purposes of this Article 8th of these Restated Articles of Incorporation (as amended), the following definitions shall apply:

(i) “Affiliate” shall mean a person that directly, or indirectly through one or more intermediaries, controls or is controlled by or is under common control with another person.

(ii) “Associate” shall mean any corporation or organization of which a person is an officer or partner or is, directly or indirectly, the beneficial owner of ten percent or more of any class of securities of that corporation or organization; or any trust or other estate in which a person has a ten percent or larger beneficial interest or as to which a person serves as a trustee or in a similar fiduciary capacity; or any relative or spouse of a person and any relative of a spouse, who had the same residence as such person.

(iii) “Beneficial Ownership” shall mean all shares directly or indirectly owned by a person and all shares which a person has the right to acquire through the exercise of any option, warrant or right (whether or not currently exercisable), through the conversion of a security, pursuant to the power to revoke a trust, discretionary account or similar arrangement, pursuant to automatic termination of a trust, discretionary account or similar arrangement or otherwise. All shares shall be deemed indirectly owned by a person as to which such person enjoys benefits substantially equivalent to those of ownership by reason of any contract, understanding, relationship, agreement or other arrangement, including without limitation any written or unwritten agreement to act in concert.

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(iv) “Control” shall mean the possession, directly or indirectly, of the power to direct or cause the direction of the management and policies of a person, whether through ownership of voting securities, by contract or otherwise.

(v) “Interested Person” shall mean any person who beneficially owns twenty percent or more of the outstanding shares of Common Stock of the Company.

(vi) “Person” shall mean an individual, a corporation, a partnership, an association, a jointstock company, a trust, any unincorporated organization, a government or political subdivision thereof and any other entity.

(vii) “Substantial Part” shall mean more than twenty percent of the total consolidated assets of the Company, as shown on its consolidated balance sheet as of the end of the most recent fiscal year.

D. The affirmative vote of the holders of at least seventy-five percent of the outstanding shares of Common Stock entitled to vote shall be required to amend or repeal this Article 8th or Article 9th hereof.

Article 9th. The Board of Directors of the Company, when evaluating any proposal

(i) involving a tender or exchange offer for any securities of the Company,

(ii) to merge or consolidate the Company with another corporation or other person, or

(iii) to purchase or otherwise acquire all or substantially all or a substantial part of the properties or assets of the Company,

shall, in connection with the exercise of its judgment in determining what is in the best interests of the Company and its shareholders, give due consideration to all relevant factors, including without limitations, the economic effect, both immediate and long-term, upon the Company’s shareholders, including shareholders, if any, not to participate in the transaction, and the social and economic effect on the employees, suppliers and customers of, and other dealing with, the Company and its subsidiaries and on the communities in which the Company and its subsidiaries operate or are located. The definitions set forth in subparagraph C of Article 8th shall apply to this Article 9th.

Article 10th. Classification of the Board of Directors and Related Matters.

10.1. Number, Election, etc. The business and affairs of the Company shall be managed by or under the direction of a Board of Directors comprised as follows:

(a) Number. The whole Board of Directors shall consist of such number of persons, not less than 5 nor more than 15, as may from time to time be determined by the Board pursuant to a resolution adopted by a majority vote of the Disinterested Directors then in office.

(b) Classes; Election and Terms. Beginning with the Board of Directors to be elected at the annual meeting of shareholders to be held in 1986, the directors shall be classified in respect of the time for which they shall severally hold office by dividing them into three classes, as nearly equal in number as possible. If the classes of directors are not equal, the Board of Directors by a majority vote of the Disinterested Directors then in office shall determine which class shall contain an unequal number of directors. At the annual meeting of shareholders to be held in 1986, separate elections shall be held for the directors of each class, the term of office of directors

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of the first class to expire at the first annual meeting after their election; the term of office of the directors of the second class to expire at the second annual meeting after their election; and the term of office of the directors of the third class to expire at the third annual meeting after their election. At each succeeding annual meeting, the shareholders shall elect directors of the class whose term then expires, to hold office until the third succeeding annual meeting. Each director shall hold office for the term for which elected and until his or her successor shall be elected and shall qualify.

(c) Removal of Directors. Any directors, any class of directors or the entire Board of Directors may be removed from office by shareholder vote at any time, without assigning any cause, but only if shareholders entitled to cast at least 80% of the votes which all shareholders would be entitled to cast at an annual election of directors or of such class of directors shall vote in favor of such removal; provided, however, that the shareholders shall have such power of removal without cause only if and so long as the general corporate law of the Company’s state of incorporation specifically mandates such power. If such power of removal without cause is not mandated by statute, the shareholders may remove a director or directors from office at any time only for cause and only if, in addition to any vote required by any other provision of law, the Articles or the ByLaws of the Company, such removal is approved by the affirmative vote of at least a majority of the Voting Power of the outstanding shares of Voting Stock of the Company which are not Beneficially Owned by an Acquiring Person.

(d) Vacancies. Vacancies in the Board of Directors, including vacancies resulting from an increase in the number of directors, shall be filled only by a majority vote of the Disinterested Directors then in office, though less than a quorum, except as otherwise required by law. All directors elected to fill vacancies shall hold office for a term expiring at the annual meeting of shareholders at which the term of the class to which they have been elected expires. No decrease in the number of directors constituting the Board of Directors shall shorten the term of an incumbent director.

(e) Nominations of Director Candidates. Nominations for the election of directors may be made only by the Board of Directors or a committee appointed by the Board of Directors or by any holder of record of stock entitled to vote in the election of the directors to be elected; but a nomination may be made by a shareholder only if written notice of such nomination has been given, either by personal delivery or by United States mail, postage prepaid, to the Secretary of the Company not later than 90 days in advance of the meeting at which the election is to be held. Each such notice shall set forth: (a) the name and address of the shareholder who intends to make the nomination and of the person or persons to be nominated; (b) a representation that the shareholder is a holder of record of stock of the Company entitled to vote at such meeting and intends to appear in person or by proxy at the meeting to nominate the person or persons specified in the notice; (c) a description of all arrangements or understandings between the shareholder and each nominee and any other person or persons (naming such person or persons) pursuant to which the nomination or nominations are to be made by the shareholder; (d) such other information regarding each nominee proposed by such shareholder as would be required to be included in a proxy statement filed pursuant to the proxy rules of the Securities and Exchange Commission, had the nominee been nominated by the Board of Directors; and (e) the consent of each nominee to serve as a director of the Company if so elected.

(f) Exception for Directors Elected by Preferred Stock. Whenever the holders of any class or series of stock having a preference over the Common Stock of the Company as to dividends or assets shall have the right, voting separately as a class, to elect one or more directors

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of the Company, none of the foregoing provisions of this Section 10.1 shall apply with respect to the director or directors elected by such holders of preferred stock.

10.2. Vote Needed to Amend. In addition to any vote required by any other provisions of law, the Articles or the By-Laws of the Company, the affirmative vote of the holders of at least a majority of the Voting Power of the Voting Stock of the Company which is not Beneficially Owned, directly or indirectly, by an Acquiring Person, shall be required to amend, alter, change or repeal, or adopt any provision inconsistent with, this Article 10th (including the provisions in Article 6th which are applicable to this Article 10th), unless such action has been previously approved by a majority vote of the Disinterested Directors.

Article 11th. Extraordinary Vote for Business Combinations.

11.1. Votes Required. In addition to any vote required by any other provisions of law, the Articles or the By-Laws of the Company, the affirmative vote of the holders of at least a majority of the Voting Power of the Voting Stock of the Company which is not Beneficially Owned by an Acquiring Person shall be required for the approval or authorization of (i) any Business Combination or (ii) any proposal to amend, alter, change or repeal, or adopt any provision inconsistent with, this Article 11th (including the provisions in Article 6th which are applicable to this Article 11th); provided, however, that the foregoing voting requirements shall not be applicable if the Board of Directors of the Company shall have approved the Business Combination or proposal upon the vote of not less than a majority of the Disinterested Directors.

Article 12th. Amendments to Articles of Incorporation or By-Laws; Shareholder Action.

12.1. Amendments to By-Laws. The Board of Directors, by vote of a majority of the Disinterested Directors, may adopt, amend and repeal the By-Laws with respect to those matters which are not, by statute, reserved exclusively to the shareholders. No By-Law may be adopted, amended or repealed by the shareholders unless, in addition to any vote required by any other provisions of law, the Articles or the By-Laws of the Company, such action is approved by the holders of a majority of the Voting Power of the Voting Stock of the Company which is not Beneficially Owned by an Acquiring Person, unless such action has been previously approved by a majority vote of the Disinterested Directors.

12.2. Amendments to Articles of Incorporation. Except in a case where it is specifically provided that this Article 12.2 does not apply to an amendment or deletion of another provision of the Articles, the approval of the holders of a majority of the Voting Power of the Voting Stock of the Company which is not Beneficially Owned by an Acquiring Person, in addition to any vote required by any other provisions of law, the Articles or the By-Laws of the Company, shall be required to amend the Articles or delete any provision thereof, unless such action has been previously approved by a majority vote of the Disinterested Directors.

12.3 Shareholder Action—Meetings; Special Meetings. Any action required or permitted to be taken by the shareholders of the Company must be effected at a duly called annual or special meeting of such holders and may not be effected without a meeting by any consent in writing by such holders. Except as otherwise required by law and subject to the rights of the holders of any class or series of preferred stock with respect to any vote of the holders of such class or series when voting by class, special meetings of shareholders of the Company may be called only by the Board of Directors pursuant to a resolution approved by a majority vote of the Disinterested Directors.

Article 13th. Articles Defined. Henceforth, the Articles as defined in the Business Corporation Law shall not include any prior documents.

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Article 14th. Personal Liability of Directors.

(a) To the fullest extent that the laws of the Commonwealth of Pennsylvania, as in effect on January 27, 1987 or as thereafter amended, permit elimination or limitation of the liability of directors, no Director of the Company shall be personally liable for monetary damages as such for any action taken, or any failure to take any action, as a Director.

(b) This Article 14th shall not apply to any actions filed prior to January 27, 1987, nor to any breach of performance of duty or any failure of performance of duty by any Director of the Company occurring prior to January 27, 1987. The provisions of this Article shall be deemed to be a contract with each Director of the Company who serves as such at any time while this Article is in effect and each such Director shall be deemed to be doing so in reliance on the provisions of this Article. Any amendment or repeal of this Article or adoption of any other By-law or provision of the Articles of the Company which has the effect of increasing Director liability shall operate prospectively only and shall not affect any action taken, or any failure to act, prior to the adoption of such amendment, repeal,other By-law or provision. [Article 14 added April 27, 1987.]

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