Document:

EX-4.3

Exhibit 4.3

HARSCO CORPORATION

AND

THE BANK OF NEW YORK

as Trustee

 

FIRST SUPPLEMENTAL INDENTURE

Dated as of May 15, 2008

to

Indenture

Dated as of May 15, 2008

 

 

 

          FIRST SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”), dated as of May 15, 2008,
between HARSCO CORPORATION, a Delaware corporation (the “Company”) and THE BANK OF NEW YORK, a New
York banking corporation, as trustee (the “Trustee”).

          Capitalized terms used herein and not otherwise defined herein have the meanings assigned to
those terms in the Indenture unless otherwise indicated.

R E C I T A L S

     WHEREAS, the Company executed and delivered an indenture dated as of May 15, 2008 (the
“Indenture”) between the Company and the Trustee;

     WHEREAS, Section 9.1 of the Indenture provides that the Company and the Trustee may enter into
one or more indentures supplemental to the Indenture, without the consent of any Holders, to add,
among other things, covenants and agreements of the Company to be observed thereafter for the
protection of the Holders of all or any series of Securities and to establish the terms of any
series of Securities;

     WHEREAS, the Company desires to issue one series of Securities, the 5.75% Senior Notes Due
2018 (the “Notes”); and

     WHEREAS, all requirements necessary to make this Supplemental Indenture a valid, binding and
enforceable instrument in accordance with its terms have been done and performed, and the execution
and delivery of this Supplemental Indenture has been duly authorized in all respects.

     NOW, THEREFORE, in consideration of the covenants and agreements set forth herein, the parties
hereto hereby agree as follows:

ARTICLE I

Terms and Conditions

     Section 1.1. Terms and Conditions. The terms and characteristics of the Notes shall be as
follows (the numbered clauses set forth below corresponding to the lettered subsections of Section
3.1 of the Indenture, with terms used and not defined herein having the meanings specified in the
Indenture):

	 	(a)	 	the title of the Notes shall be “5.75% Senior Notes due 2018” and the CUSIP for
the Notes is 415864AJ6;
	 
	 	(b)	 	the aggregate principal amount of the Notes which may be authenticated and
delivered under the Indenture shall be limited to $450,000,000; provided, 

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	 	 	 	however, that
such authorized aggregate principal amount may from time to time be increased above such amount by a resolution of the Board of Directors to such
effect;
	 
	 	(c)	 	not applicable;
	 
	 	(d)	 	the date on which the principal of the Notes shall be payable shall be May 15,
2018;
	 
	 	(e)	 	the Notes shall bear interest at the rate of 5.75% per annum. The Interest
Payment Dates on which such interest will be payable shall be May 15 and November 15 of
each year, or the first business day thereafter if May 15 or November 15 is not a
business day, commencing on November 15, 2008. The regular record date for the
determination of Holders to whom interest is payable on any such Interest Payment Date
shall be the May 1 and November 1, as the case may be, (in each case, whether or not a
business day) immediately preceding the related Interest Payment Date;
	 
	 	(f)	 	the principal of and any premium or interest on any Notes shall be payable at
the office or agency of the Company maintained for that purpose in at the Corporate
Trust Office of the Trustee, currently located at The Bank of New York, 101 Barclay
Street, Fl. 8W, 

New York, NY 10286, Attn: U.S. Corporate Finance Group;
	 
	 	(g)	 	The Notes will be redeemable in whole or in part, at the Company’s option, at
any time and from time to time at a redemption price equal to the greater of (i) 100%
of the principal amount of the Notes to be redeemed and (ii) the sum of the present
values of the remaining scheduled payments of principal and interest thereon discounted
to the redemption date on a semiannual basis (assuming a 360-day year consisting of
twelve 30-day months) at the Treasury Rate as defined below, plus 30 basis points, plus
accrued interest thereon to the date of redemption.
	 
	 	 	 	“Treasury Rate” means, with respect to any redemption date, the rate per annum equal
to the semiannual equivalent yield to a maturity of the Comparable Treasury Issue,
assuming a price for the Comparable Treasury Issue (expressed as a percentage of its
principal amount equal to the Comparable Treasury Price for such redemption date).
	 
	 	 	 	“Comparable Treasury Issue” means the United States Treasury security selected by an
Independent Investment Banker as having a maturity comparable to the remaining term
of the Notes to be redeemed that would be utilized, at the time of selection and in
accordance with customary financial practice, in pricing new 

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	 	 	 	issues of corporate
debt securities of comparable maturity to the remaining term of such Notes.

	 
	 	 	 	“Comparable Treasury Price” means, with respect to any redemption date, (i) the
average of four Reference Treasury Dealer Quotations for such redemption date, after
excluding the highest and lowest such Reference Treasury Dealer Quotations, or (ii)
if the trustee obtains fewer than six such Reference Treasury Dealer Quotations, the
average of all such Quotations, or (iii) if only one Reference Dealer Quotation is
received, such quotation.
	 
	 	 	 	“Independent Investment Banker” means one of the Reference Treasury Dealers that the
Company appoints.
	 
	 	 	 	“Reference Treasury Dealer” means (i) J.P. Morgan Securities Inc., Citigroup Global
Markets Inc. and Greenwich Capital Markets, Inc. and their successors, provided,
however, that if any of the foregoing ceases to be a primary U.S. Government
securities dealer in New York City (a “Primary Treasury Dealer”), the Company will
substitute another Primary Treasury Dealer and (ii) any other Primary Treasury
Dealer selected by the Company.
	 
	 	 	 	“Reference Treasury Dealer Quotations” means, with respect to each Reference
Treasury Dealer and any redemption date, the average, as determined by the Trustee,
of the bid and asked prices for the Comparable Treasury Issue (expressed in each
case as a percentage of its principal amount) quoted in writing to the Trustee by
such Reference Treasury Dealer at 5:00 p.m., New York City time on the third
business day preceding such redemption date.
	 
	 	 	 	Notice of any redemption will be mailed at least 30 days but not more than 60 days
before the redemption date to each holder of Notes to be redeemed.
	 
	 	 	 	Unless the Company defaults in payment of the redemption price, on and after the
redemption date, interest will cease to accrue on the Notes or portions thereof
called for redemption.
	 
	 	 	 	If less than all of the Notes then outstanding are to be redeemed, the Notes to be
redeemed shall be selected by DTC (as defined below), in the case of Notes
represented by a Global Security, or by the Trustee by a method that the Trustee
deems to be fair and appropriate, in the case of Notes that are not represented by a
Global Security.
	 
	 	(h)	 	not applicable;
	 
	 	(i)	 	the Notes shall be issuable in denominations of $2,000 and integral multiples
of $1,000 in excess of $2,000;

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	 	(j)	 	not applicable;
	 
	 	(k)	 	not applicable;
	 
	 	(l)	 	not applicable;
	 
	 	(m)	 	not applicable;
	 
	 	(n)	 	the Notes shall be subject to Sections 13.2 (Defeasance) and 13.3 (Covenant
Defeasance) of the Indenture;
	 
	 	(o)	 	(a) the Notes shall be issued in the form of one or more Global Securities; (b)
the Depositary for such Global Securities shall be The Depository Trust Company
(“DTC”); and (c) the procedures with respect to transfer and exchange of Global
Securities shall be as set forth in the Indenture;
	 
	 	(p)	 	not applicable;
	 
	 	(q)	 	Covenants of the Company

(i) Change of Control Offer

If a Change of Control Triggering Event (as defined below) occurs, unless the
Company has exercised its option to redeem the Notes in accordance with Section
1.1(g) above, the Company shall be required to make an offer (a “Change of Control
Offer”) to each Holder of the Notes to repurchase all or any part (equal to $2,000
or integral multiples of $1,000 in excess thereof) of that Holder’s Notes on the
terms set forth in the Notes. In a Change of Control Offer, the Company shall be
required to offer payment in cash equal to 101% of the aggregate principal amount of
Notes repurchased, plus accrued and unpaid interest, if any, on the Notes
repurchased to, but not including, the date of repurchase (a “Change of Control
Payment”). Within 30 days following any Change of Control Triggering Event or, at
the Company’s option, prior to any Change of Control (as defined below), but after
public announcement of the transaction that constitutes or may constitute the Change
of Control, a notice shall be mailed to Holders of the Notes describing the
transaction that constitutes or may constitute the Change of Control Triggering
Event and offering to repurchase such Notes on the date specified in the applicable
notice, which date shall be no earlier than 30 days and no later than 60 days from
the date such notice is mailed (a “Change of Control Payment Date”). The notice
shall, if mailed prior to the date of consummation of the Change of Control, state
that the Change of Control Offer is conditioned on the Change of Control Triggering
Event occurring on or prior to the applicable Change of Control Payment Date.

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On each Change of Control Payment Date, the Company shall, to the extent lawful:

(A) accept for payment all Notes or portions of Notes properly tendered pursuant
to the applicable Change of Control Offer;

(B) deposit with the Paying Agent an amount equal to the Change of Control
Payment in respect of all Notes or portions of Notes properly tendered; and

(C) deliver or cause to be delivered to the Trustee the Notes properly accepted
together with an Officers’ Certificate stating the aggregate principal amount of
Notes or portions of Notes being repurchased.

The Company shall not be required to make a Change of Control Offer upon the
occurrence of a Change of Control Triggering Event if a third party makes such an
offer in the manner, at the times and otherwise in compliance with the requirements
for an offer made by the Company and the third party purchases all Notes properly
tendered and not withdrawn under its offer. In addition, the Company shall not
repurchase any Notes if there has occurred and is continuing on the Change of
Control Payment Date an Event of Default, other than a default in the payment of the
Change of Control Payment upon a Change of Control Triggering Event.

The Company shall comply with the requirements of Rule 14e-1 under the Exchange Act,
and any other securities laws and regulations thereunder to the extent those laws
and regulations are applicable in connection with the repurchase of the Notes as a
result of a Change of Control Triggering Event. To the extent that the provisions of
any such securities laws or regulations conflict with the Change of Control Offer
provisions of the Notes, the Company shall comply with those securities laws and
regulations and shall not be deemed to have breached its obligations under the
Change of Control Offer provisions herein by virtue of any such conflict.

(ii) Limitations on Liens

The Company will not at any time create, incur, assume or guarantee, and will not
cause, suffer or permit a Restricted Subsidiary (as defined below) to create, incur,
assume or guarantee, any Secured Debt (as defined below) without making effective
provision (and the Company covenants that in such case it will make or cause to be
made effective provision) whereby the Securities then outstanding and any other
indebtedness of or guaranteed by the Company or such Restricted Subsidiary then
entitled thereto, subject to applicable priorities of payment, shall be secured by
the Security Interest (as defined below) or guaranty securing such Secured Debt
equally and ratably with (or, at the Company’s option, prior to) any

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and all other
obligations and indebtedness thereby secured, so long as any such Secured Debt
remains outstanding, provided, however, that the foregoing covenants shall not be
applicable to the following:

(A) (1) Any Security Interest upon any property hereafter acquired or
constructed by the Company or a Restricted Subsidiary and created

contemporaneously with, or within 12 months after, such acquisition or
construction to secure or provide for the payment of all or any part of the
purchase price of such property or the cost of construction thereof, as the case
may be; or (2) the acquisition of property subject to any Security Interest upon
such property existing at the time of acquisitions thereof, whether or not the
obligation secured thereby is assumed by the Company or such Restricted
Subsidiary; or (3) any Security Interest existing on the property or on the
outstanding shares of indebtedness of a corporation at the time such corporation
shall become a Restricted Subsidiary or arising after such corporation becomes a
Restricted Subsidiary pursuant to contractual commitments entered into prior to
and not in contemplation of such corporation becoming a Restricted Subsidiary;
or (4) any Security Interest on property of a corporation (x) existing at the
time such corporation is merged into or consolidated with the Company or a
Restricted Subsidiary, (y) existing at the time of a sale, lease or other
disposition of the properties of a corporation or firm as an entirety or
substantially as an entirety to the Company or a Restricted Subsidiary, or (z)
arising after a transaction described in (x) or (y) of this clause (4) pursuant
to contractual commitments entered into prior to and not in contemplation of
such transaction; provided in each case that any such Security Interest does not
attach to or affect property owned by the Company or a Restricted Subsidiary
prior to such acquisition or construction (except the real property on which any
property so constructed is physically located, in the case of any such
construction) or to other property thereafter acquired or constructed other than
additions to such acquired or constructed property; or

(B) Mechanics’, materialmen’s, carriers’ or other like liens, arising in the
ordinary course of businesses; or

(C) Any Security Interest arising by reason of deposits with, or the giving of
any form of security to, any governmental agency or any body created or approved
by law or governmental regulations as a condition to the transaction of any
business, or the exercise of any privilege or license; or

(D) Liens of taxes or assessments for the then current year not at the time due,
or the liens of taxes or assessments already due but the validity of which is

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being contested in good faith and against which adequate reserves have been
established; or

(E) Judgment liens, so long as the finality of such judgment is being contested
in good faith and execution thereon is stayed; or

(F) Leases, and, so long as the rent secured thereby is not in default,
landlords’ liens on fixtures and movable property located on premises leased in
the ordinary course of business; or

(G) Security Interests arising in connection with contracts with or made at the
request of the United States of America or any department or agency thereof,
insofar as such Security Interests relate to property manufactured, installed or
constructed by or to be supplied by, or property furnished to, the Company or a
Restricted Subsidiary pursuant to, or to enable the performance of such
contracts, or property the manufacture, installation, construction or
acquisition of which is financed by the United States of America or any
department or agency thereof pursuant to, or to enable the performance of, such
contracts; or

(H) Security Interests in property of the Company or a Restricted Subsidiary in
factor of the United States of America or any state thereof or any foreign
government, or any department, agency or instrumentally or political subdivision
of any thereof, to secure partial progress, advance or other payments pursuant
to any contract or statute or to secure any indebtedness incurred for the
purpose of financing all or any part of the purchase price or the cost of
construction of the property subject to such Security Interests; or

(I) Any Security Interest in favor of the United States of America, or any
state, country or local government, or to any agency thereof, in connection with
the financing of a Principal Property (as defined below) (including without
limitation, any such Principal Property designed primarily for the purpose of
pollution control), and any transfers of title to any such Principal Property or
Security Interest in any such Principal Property, in favor of such government or
governmental agency in each case as are necessary or appropriate to permit the
acquisition, construction, attachment or removal of such Principal Property;
provided that such transfer of title and the lien of any such Security Interest
does not apply to any other assets now or hereafter owned by the Company or any
Restricted Subsidiary; or

(J) Any extension, renewal or replacement (or successive extensions, renewals or
replacements) in whole or in part of any Security Interest referred to in the
foregoing subparagraphs (A) through (I), inclusive, provided that the principal
amount of Secured Debt secured thereby shall not exceed the principal amount
outstanding at the time of such extension, renewal or

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replacement, and that such
extension, renewal or replacement shall be limited to the property which secured
the Security Interest so extended, renewed or replace and additions to such
property.

Notwithstanding the foregoing provisions, the Company and any one or more Restricted
Subsidiaries may issue, assume or guarantee Secured Debt which

would otherwise be subject to the foregoing restrictions in an aggregate amount
which, together with all other Secured Debt of the Company and its Restricted
Subsidiaries which would otherwise be subject to the foregoing restrictions (not
including Secured Debt permitted to be secured under subparagraphs (A) through (I),
inclusive, above) and the aggregate value of the Sale and Leaseback Transactions in
existence at such time (not including Sale and Leaseback Transactions the proceeds
of which have been or will be applied in accordance with subparagraph (B) of Section
1.1(q)(iii) below), does not at the time exceed 10% of Consolidated Net Tangible
Assets (as defined below).

(iii) Limitations on Sale and Leaseback Transactions

The Company will not, and will not permit any Restricted Subsidiary to, engage in
any Sale and Leaseback Transaction (as defined below), unless:

(A) the Company or such Restricted Subsidiary would be entitled, pursuant to the
provisions of Section 1.1(q)(ii) hereof (without reference to subparagraphs (A)
through (J) thereof), to incur Secured Debt equal in amount to the amount
realized or to be realized upon such sale or transfer secured by a Security
Interest on the property to be leased without equally and ratably securing the
Securities; or

(B) the Company or a Restricted Subsidiary shall apply, within 120 days after
such sale or transfer, an amount equal to the value of the property so leased to
(1) the purchase or construction of properties, facilities or equipment used for
operating purposes or (2) the retirement of other Funded Debt (as defined below)
of the Company or of any Restricted Subsidiary (other than any Funded Debt owed
to the Company or any Restricted Subsidiary); provided, however, that the amount
to be applied to the retirement of Funded Debt of the Company shall be reduced
by the sum of (y) the principal amount of any Securities delivered within 120
days after such sale or transfer to the Trustee for retirement and cancellation,
and (z) the principal amount of Funded Debt, other than Securities, voluntarily
retired by the Company within 120 days after such sale or transfer.
Notwithstanding the foregoing, no retirement of Funded Debt pursuant to clause
(B)(2) of this Section 1.1(q)(iii) may be effected by payment at maturity or
pursuant to any mandatory sinking fund payment or any mandatory prepayment
provision.

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The term “value” shall mean with respect to a Sale and Leaseback Transaction, as of
any particular time, the amount equal to the greater of (y) the net proceeds of the
sale of the property leased pursuant to such Sale and Leaseback Transaction or (z)
the fair value of such property at the time of entering into such Sale and Leaseback
Transaction, as determined by the Board of Directors, in either case divided first
by the number of full years of such term remaining at the time of

determination, without regard to any renewal or extension options contained in the
lease.

(iv) Limitations on Transfer of a Principal Property to an Unrestricted Subsidiary

The Company will not itself, and will not permit any Restricted Subsidiary to,
transfer (whether by merger, consolidation or otherwise) any Principal Property to
any Unrestricted Subsidiary (as defined below), unless it shall, within 120 days of
the effective date of such transfer, apply an amount equal to the fair value of such
property at the time of such transfer, as determined by the Board of Directors, to
(A) the purchase or construction of properties, facilities or equipment used for
operating purposes or (B) the retirement of other Funded Debt of the Company or of
any Restricted Subsidiary (other than any Funded Debt owed to the Company or any
Restricted Subsidiary); provided, however, that the amount to be applied to the
retirement of Funded Debt of the Company shall be reduced by the sum of (y) the
principal amount of any Securities delivered within 120 days after such sale or
transfer to the Trustee for retirement and cancellation, and (z) the principal
amount of Funded Debt, other than Securities, voluntarily retired by the Company
within 120 days after such sale or transfer. Notwithstanding the foregoing, no
retirement of Funded Debt pursuant to clause (B) of this Section 1.1(q)(iv) may be
effected by payment at maturity or pursuant to any mandatory sinking fund payment or
any mandatory prepayment provisions.

(v) Definitions

For purposes of this Section 1.1(q):

     “Change of Control” shall mean the occurrence of any of the following: (i) the
direct or indirect sale, lease, transfer, conveyance or other disposition (other
than by way of merger or consolidation), in one or more series of related
transactions, of all or substantially all of the Company’s assets and the assets of
the Company’s Subsidiaries, taken as a whole, to any Person (as defined below),
other than the Company or one of the Company’s Subsidiaries (as defined below); (ii)
the consummation of any transaction (including, without limitation, any merger or
consolidation) the result of which is that any Person becomes the beneficial owner
(as defined in Rules 13d-3 and 13d-5 under the Exchange Act), directly or
indirectly, of more than 50% of the Company’s outstanding Voting Stock (as defined
below) or other Voting Stock into which the Company’s Voting Stock is

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reclassified,
consolidated, exchanged or changed, measured by voting power rather than number of
shares; (iii) the Company consolidates with, or merges with or into, any Person, or
any Person consolidates with, or merges with or into, the Company, in any such event
pursuant to a transaction in which any of the Company’s outstanding Voting Stock or
the Voting Stock of such other Person is converted into or exchanged for cash,
securities or other property, other than any
such transaction where the shares of the Company’s Voting Stock outstanding
immediately prior to such transaction constitute, or are converted into or exchanged
for, a majority of the Voting Stock of the surviving Person or any direct or
indirect parent company of the surviving Person immediately after giving effect to
such transaction; (iv) the first day on which a majority of the members of the
Company’s Board of Directors are not Continuing Directors (as defined below); or (v)
the adoption of a plan relating to the Company’s liquidation or dissolution. The
term “Person,” as used in this definition, has the meaning given thereto in Section
13(d)(3) of the Exchange Act. Notwithstanding the foregoing, a transaction will not
be deemed to involve a Change of Control if (i) the Company becomes a direct or
indirect wholly-owned subsidiary of a holding company and (ii)(A) the direct or
indirect holders of the voting stock of such holding company immediately following
that transaction are substantially the same as the holders of the outstanding voting
stock of the Company immediately prior to that transaction or (B) immediately
following that transaction no person (other than a holding company satisfying the
requirements of this sentence) is the beneficial owner, directly or indirectly, of
more than 50% of the voting stock of such holding company.

     “Change of Control Triggering Event” means the occurrence of both a Change of
Control and a Rating Event.

     “Consolidated Net Tangible Assets” means the aggregate amount of assets (less
applicable reserves and other property deductible items) after deducing therefrom
(A) all current liabilities (excluding any constituting Funded Debt by reason of
such Funded Debt being renewable or extendible), and (B) all goodwill, trade names,
trademarks, patents, unamortized debt discount and expenses and other like
intangibles, all as set forth on the most recent balance sheet of the company and
its consolidated Subsidiaries and computed in accordance with generally accepted
account principles.

     “Continuing Directors” means, as of any date of determination, any member of
the Company’s Board of Directors who (A) was a member of such Board of Directors on
the date the Notes were issued or (B) was nominated for election, elected or
appointed to such Board of Directors with the approval of a majority of the
Continuing Directors who were members of such Board of Directors at the time of such
nomination, election or appointment (either by a specific vote or by

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approval of the
Company’s proxy statement in which such member was named as a nominee for election
as a director, without objection to such nomination).

     “Fitch” means Fitch Inc., and its successors.

     “Funded Debt” means all indebtedness for money borrowed having a maturity of
more than one year from the date of the most recent balance sheet of the

Company and its consolidated Subsidiaries or having a maturity of less than one
year but by its terms being renewable or extendible beyond one year from the date of
such balance sheet at the option of the borrower.

     “Investment Grade” means a rating equal to or higher than BBB- (or the
equivalent) by Fitch, Baa3 (or the equivalent) by Moody’s (as defined below) and
BBB- (or the equivalent) by S&P (as defined below), and the equivalent investment
grade credit rating from any replacement rating agency or rating agencies selected
by the Company.

     “Moody’s” means Moody’s Investors Service, Inc., and its successors.

     “Principal Property” means any manufacturing plant or manufacturing facility,
warehouse, office building or other operating facility located within the United
States, and any equipment located in any such plant or facility (together with the
land on which such plant or facility is erected and fixtures comprising a part of
such plant or facility), owned or leased by the Company or by one or more of the
Company’s Restricted Subsidiaries on or acquired or leased by the Company or by one
or more of the Company’s Restricted Subsidiaries after May 15, 2008, other than any
such principal property that the Company’s Board of Directors declares not to be of
material importance to the overall business that the Company and its Restricted
Subsidiaries conduct, taken as a whole.

     “Rating Agencies” means (A) each of Fitch, Moody’s and S&P; and (B) if any of
Fitch, Moody’s or S&P ceases to rate the Notes or fails to make a rating of the
Notes publicly available for reasons outside of the Company’s control, a “nationally
recognized statistical rating organization” within the meaning of Rule
15c3-1(c)(2)(vi)(F) under the Exchange Act selected by the Company (as certified by
a resolution of the Company’s Board of Directors) as a replacement agency for Fitch,
Moody’s or S&P, or all of them, as the case may be.

     “Rating Event” means a decrease in the ratings of the Notes below Investment
Grade by at least two of the three Rating Agencies on any date from the date that is
60 days prior to the date of the first public notice of an arrangement that could
result in a Change of Control until the end of the 60-day period following the
consummation of such Change of Control (which period shall be extended so long 

11

 

as
the rating of the Notes is under publicly announced consideration for possible
downgrade by any of the Rating Agencies).

     “Restricted Subsidiary” means (A) any Subsidiary (as defined below) other than
an Unrestricted Subsidiary, and (B) any Subsidiary which was an Unrestricted
Subsidiary but which, subsequent to the date hereof, is designated by the Company
(by certified resolution of the Board of Directors delivered to the Trustee) to be a
Restricted Subsidiary; provided, however, that the Company may

not designate any such Subsidiary to be a Restricted Subsidiary if the Company
would thereby breach any covenant or agreement herein contained.

     “Sale and Leaseback Transaction” means any sale or transfer made by the Company
or one or more Restricted Subsidiaries (except a sale or transfer made to the
Company or one or more Restricted Subsidiaries) of any Principal Property which has
been in full operation for more than 120 days prior to such sale or transfer, if
such sale or transfer is made with the intention of, or as part of an arrangement
involving, the lease of such Principal Property to the Company or a Restricted
Subsidiary (except a lease for a period not exceeding 36 months, made with the
intention that the use of the leased Principal Property by the Company or such
Restricted Subsidiary will be discontinued on or before the expiration of such
period).

     “S&P” means Standard & Poor’s Rating Services, a division of The McGraw-Hill
Companies, Inc., and its successors.

     “Secured Debt” means any indebtedness for money borrowed by the Company or a
Restricted Subsidiary, and any other indebtedness of the Company or a Restricted
Subsidiary on which by the terms of such indebtedness interest is paid or payable
(other than indebtedness owned by a Restricted Subsidiary to the Company, by a
Restricted Subsidiary to another Restricted Subsidiary or by the Company to a
Restricted Subsidiary), which in any such case is by its terms secured by (A) a
Security Interest in any Principal Property, or (B) a Security Interest in any
shares of stock or indebtedness of a Restricted Subsidiary, or (C) in the case of
any such indebtedness of the Company, a guaranty by any Restricted Subsidiary.

     “Security Interest” means any mortgage, pledge, lien, encumbrance or other
security interest which secures payment or performance of an obligation.

     “Subsidiary” means any corporation of which the Company, or the Company and one
or more Subsidiaries, or any one or more Subsidiaries, directly or indirectly own
voting securities entitling the holders thereof to elect a majority of the
directors, either at all times or so long as there is no default or contingency

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which permits the holders of any other class or classes of securities to vote for
the election of one or more directors.

     “Unrestricted Subsidiary” means (A) any Subsidiary acquired or organized after
the date hereof, provided, however, that such Subsidiary is not a successor,
directly or indirectly, to any Restricted Subsidiary, (B) any Subsidiary the
principal business and assets of which are located outside the United States of
America, its territories and possessions, and (C) any Subsidiary substantially all
the assets of which consist of stock or other securities of a Subsidiary or
Subsidiaries of the character described in clauses (A) and (B) of this paragraph, in

each case unless and until any such Subsidiary shall have been designated to be
a Restricted Subsidiary pursuant to clause (B) of the definition of “Restricted
Subsidiary.”

     “Voting Stock” means, with respect to any specified “Person” (as that term is
used in Section 13(d)(3) of the Exchange Act) as of any date, the capital stock of
such Person that is at the time entitled to vote generally in the election of the
board of directors of such Person.

	 	(r)	 	not applicable.

ARTICLE II

Miscellaneous

     Section 2.1. Effect of Supplemental Indenture. Upon the execution and delivery of this
Supplemental Indenture by the Company and the Trustee, the Indenture shall be modified in
accordance herewith, and this Supplemental Indenture shall form a part of the Indenture for all
purposes; and every Holder of Securities heretofore or hereafter authenticated and delivered under
the Indenture shall be bound thereby.

     Section 2.2. Indenture Remains in Full Force and Effect. Except as supplemented and amended
hereby, all provisions in the Indenture shall remain in full force and effect.

     Section 2.3. Indenture and Supplemental Indenture Construed Together. This Supplemental
Indenture is an indenture supplemental to and in implementation of the Indenture, and the Indenture
and this Supplemental Indenture shall henceforth be read and construed together.

     Section 2.4. Confirmation of Indenture. The Indenture, as supplemented and amended by this
Supplemental Indenture, is in all respects confirmed and ratified.

     Section 2.5. Conflict with Trust Indenture Act. If any provision of this Supplemental
Indenture limits, qualifies or conflicts with another provision hereof which is required to be

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included in this Supplemental Indenture by any of the provisions of the Trust Indenture Act, such
required provision shall control.

     Section 2.6. Separability. In case any one or more of the provisions contained in this
Supplemental Indenture shall be invalid, illegal or unenforceable, the validity, legality or
enforceability of the remaining provisions shall not in any way be affected or impaired thereby.

     Section 2.7. Successors and Assigns. All agreements in this Supplemental Indenture shall be
binding upon and inure to the benefit of the respective successors and assigns of the Company and
the Trustee.

     Section 2.8. Certain Duties and Responsibilities of the Trustee. In entering into this
Supplemental Indenture, the Trustee shall be entitled to the benefit of every provision of the
Indenture relating to the conduct or affecting the liability of or affording protection to the
Trustee, whether or not elsewhere herein so provided. The Trustee, for itself and its successor or
successors, accepts the terms of the Indenture as amended by this Supplemental Indenture, and
agrees to perform the same, but only upon the terms and provisions defining and limiting the
liabilities and responsibilities of the Trustee, which terms and provisions shall in like manner
define and limit its liabilities and responsibilities in the performance of the trust created by
the Indenture. The Trustee makes no representations as to the validity or sufficiency of this
Supplemental Indenture other than as to the validity of its execution and delivery by the Trustee.
The recitals and statements herein are deemed to be those of the Company and not of the Trustee.

     Section 2.9. Governing Law. This Supplemental Indenture shall be governed by, and construed
in accordance with, the laws of the State of New York.

     Section 2.10. Counterparts. This Supplemental Indenture may be executed in any number of
counterparts by the parties hereto on separate counterparts, each of which, when so executed and
delivered, shall be deemed an original, but all such counterparts shall together constitute one and
the same instrument.

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     IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly
executed, as of the day and year first written above.

	 	 	 	 	 
	 	HARSCO CORPORATION

 	 
	 	By:  	/s/ Gary J. Findling
 	 
	 	 	Name:  	Gary J. Findling 	 
	 	 	Title:  	Vice President & Treasurer 	 
	 
	 	THE BANK OF NEW YORK, as Trustee

 	 
	 	By:  	/s/ Francine J. Kincaid
 	 
	 	 	Name:  	Francine J. Kincaid 	 
	 	 	Title:  	Vice PresidentEX-4.4

Exhibit 4.4

THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND
IS REGISTERED IN THE NAME OF A DEPOSITARY OR A NOMINEE THEREOF. THIS SECURITY MAY NOT BE
TRANSFERRED TO, OR REGISTERED OR EXCHANGED FOR SECURITIES REGISTERED IN THE NAME OF, ANY PERSON
OTHER THAN THE DEPOSITARY OR A NOMINEE THEREOF AND NO SUCH TRANSFER MAY BE REGISTERED, EXCEPT IN
THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE. EVERY SECURITY AUTHENTICATED AND DELIVERED
UPON REGISTRATION OF TRANSFER OF, OR IN EXCHANGE FOR OR IN LIEU OF, THIS SECURITY SHALL BE A GLOBAL
SECURITY SUBJECT TO THE FOREGOING, EXCEPT IN SUCH LIMITED CIRCUMSTANCES.

Unless this certificate is presented by an authorized representative of The Depository Trust
Company, a New York corporation (“DTC”), to the Company or its agents for registration of transfer,
exchange, or payment, and any certificate issued is registered in the name of Cede & Co. or in such
other name as is requested by an authorized representative of DTC (and any payment is made to Cede
& Co. or to such other entity as is requested by an authorized representative of DTC), ANY
TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL
inasmuch as the registered owner hereof, Cede & Co., has an interest herein.

HARSCO CORPORATION

5.75 % Senior Notes due 2018

	 	 	 	 	 
	No. 1
	 	 	 	 
	CUSIP No. 415864AJ6

	 	$	450,000,000	 

     Harsco Corporation, a corporation duly organized and existing under the laws of Delaware
(herein called the “Company,” which term includes any successor Person under the Indenture
hereinafter referred to), for value received, hereby promises to pay to Cede & Co., or registered
assigns, the principal sum of FOUR HUNDRED FIFTY MILLION DOLLARS on May 15, 2018, and to pay
interest thereon from May 15, 2008 or from the most recent Interest Payment Date to which interest
has been paid or duly provided for, semi-annually on May 15 (or the first Business Day thereafter
if May 15 is not a Business Day) and November 15 (or the first Business Day thereafter if November
15 is not a Business Day) in each year, commencing November 15, 2008, at the rate of 5.75% per
annum on the basis of a 360-day year consisting of twelve 30-day months, until the principal hereof
is paid or made available for payment. The interest so payable, and punctually paid or duly
provided for, on any Interest Payment Date will, as provided in such Indenture, be paid to the
Person in whose name this Security (or one or more Predecessor Securities) is registered at the
close of business on the Regular Record Date for such interest, which shall be the May 1 or
November 1 (whether or not a Business Day), as the case may be, next preceding such Interest
Payment Date. Any such interest not so punctually paid or duly provided for will forthwith cease to
be payable to the Holder on such Regular Record Date and may either be paid to the Person in whose
name this Security (or one or more Predecessor Securities) is registered at the close of business
on a Special Record Date for the payment of such Defaulted Interest to be fixed by the Trustee,
notice whereof shall be given to Holders of Securities of this series not less than 10 days prior
to such Special Record Date, or be paid at any time in any other lawful manner not inconsistent
with the requirements of any securities exchange on which the Securities of this series may be
listed, and upon such notice as may be required by such exchange, all as more fully provided in
said Indenture.

     Payment of the principal of (and premium, if any) and any such interest on this Security will
be made at the office or agency of the Company maintained for that purpose in New York City, in
such coin or currency of the United States of America as at the time of payment is legal tender for
payment of public and private debts; provided, however, that at the option of the Company payment
of interest may be made by check mailed to the address of the Person entitled thereto as such
address shall appear in the Security Register.

     Reference is hereby made to the further provisions of this Security set forth on the reverse
hereof, which further provisions shall for all purposes have the same effect as if set forth at
this place.

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     Unless the certificate of authentication hereon has been executed by the Trustee referred to
on the reverse hereof by manual signature, this Security shall not be entitled to any benefit under
the Indenture or be valid or obligatory for any purpose.

2

 

     IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed.

     Dated: May 15, 2008

	 	 	 	 	 	 	 
	 	 	HARSCO CORPORATION	 	 
	 
	 	 	 	 	 	 
	 

	 	By:	 	 	 	 
	 

	 	Name:
	 	 

	 	 
	 

	 	 	 	 	 	 
	 

	 	Title:	 	 	 	 
	 

	 	 	 	 	 	 

	 	 	 	 	 
	Attest:	 	 
	 
	 	 	 	 
	By:
	 	 	 	 
	Name:

	 	 

	 	 
	 

	 	 	 	 
	Title:
	 	 	 	 
	 

	 	 	 	 

     This is one of the Securities of the series designated therein referred to in the
within-mentioned Indenture.

The Bank of New York, as Trustee

	 	 	 	 	 
	By:
	 	 	 	 
	 

	 	 	 	 
	Authorized Signatory	 	 
	Dated:
	 	 	 	 
	 

	 	 	 	 

3

 

HARSCO CORPORATION

5.75% SENIOR NOTES DUE 2018

     This Security is one of a duly authorized issue of securities of the Company (herein called
the “Securities”), issued and to be issued in one or more series under an Indenture, dated as of
May 15, 2008 (herein called the “Indenture”), between the Company and The Bank of 

New York, as
Trustee (herein called the “Trustee,” which term includes any successor trustee under the
Indenture), to which Indenture and all indentures supplemental thereto reference is hereby made for
a statement of the respective rights, limitations of rights, duties and immunities thereunder of
the Company, the Trustee and the Holders of the Securities and of the terms upon which the
Securities are, and are to be, authenticated and delivered. This Security is one of the series
designated on the face hereof.

     The Securities of this series are subject to redemption, in whole or in part, at the Company’s
option, at any time and from time to time at a redemption price equal to the greater of (i) 100% of
the principal amount of the Securities to be redeemed and (ii) the sum of the present values of the
remaining scheduled payments of principal and interest thereon discounted to the redemption date on
a semiannual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury
Rate as defined below, plus 30 basis points, plus accrued interest thereon to the date of
redemption.

     The Company will mail notice of any redemption to holders of the Securities to be redeemed at
their addresses, as shown in the security register for the Securities, at least 30 days but not
more than 60 days before the redemption date. The notice of redemption will specify, among other
items, the date fixed for redemption, the redemption price and the aggregate principal amount of
the Securities to be redeemed.

     Unless the Company defaults in payment of the redemption price, on and after the redemption
date, interest will cease to accrue on the Securities or portions thereof called for redemption. If
less than all of the Securities are to be redeemed, the Securities to be redeemed shall be selected
by lot by DTC, in the case of Securities represented by a global security, or by the Trustee by a
method that the Trustee deems to be fair and appropriate, in the case of Securities that are not
represented by a global security.

     For purposes of the optional redemption provisions of the Securities, the following terms will
be applicable:

     “Treasury Rate” means, with respect to any redemption date, the rate per annum equal to the
semiannual equivalent yield to a maturity of the Comparable Treasury Issue, assuming a price for
the Comparable Treasury Issue (expressed as a percentage of its principal amount equal to the
Comparable Treasury Price for such redemption date).

     “Comparable Treasury Issue” means the United States Treasury security selected by an
Independent Investment Banker as having a maturity comparable to the remaining term of the
Securities to be redeemed that would be utilized, at the time of selection and in accordance with
customary financial practice, in pricing new issues of corporate debt securities of comparable
maturity to the remaining term of such Securities.

     “Comparable Treasury Price” means, with respect to any redemption date, (i) the average of
four Reference Treasury Dealer Quotations for such redemption date, after excluding the highest and
lowest such Reference Treasury Dealer Quotations, or (ii) if the Trustee obtains fewer than six
such Reference Treasury Dealer Quotations, the average of all such Quotations, or (iii) if only one
Reference Dealer Quotation is received, such quotation.

     “Independent Investment Banker” means one of the Reference Treasury Dealers appointed by the
Company.

     “Reference Treasury Dealer” means (i) J.P. Morgan Securities Inc., Citigroup Global Markets
Inc. and Greenwich Capital Markets, Inc. and their successors, provided, however, that if any of
the foregoing ceases to be a primary U.S. Government securities dealer in New York City (a “Primary
Treasury Dealer”),the Company will substitute another Primary Treasury Dealer and (ii) any other
Primary Treasury Dealer selected by the Company.

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     “Reference Treasury Dealer Quotations” means, with respect to each Reference Treasury Dealer
and any redemption date, the average, as determined by the trustee, of the bid and asked prices for
the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount)
quoted in writing to the trustee by such Reference Treasury Dealer at 5:00 p.m. on the third
business day preceding such redemption date.

     In the event of redemption or conversion of this Security in part only, a new Security or
Securities of this series and of like tenor for the unredeemed or unconverted portion hereof will
be issued in the name of the Holder hereof upon the cancellation hereof.

     The Indenture provides that the Company may be required to offer to purchase the Securities at
a purchase price equal to 101% of their principal amount, plus accrued and unpaid interest, upon
the occurrence of a Change of Control Triggering Event.

     The Indenture contains provisions for defeasance at any time of (1) the entire indebtedness of
this Security or (2) certain restrictive covenants and Events of Default with respect to this
Security, in each case upon compliance with certain conditions set forth in the Indenture.

     If an Event of Default with respect to Securities of this series shall occur and be
continuing, the principal of the Securities of this series may be declared due and payable in the
manner and with the effect provided in the Indenture.

     The Indenture permits, with certain exceptions as therein provided, the amendment thereof and
the modification of the rights and obligations of the Company and the rights of the Holders of the
Securities of each series to be affected under the Indenture at any time by the Company and the
Trustee with the consent of the Holders of a majority in principal amount of the Securities at the
time Outstanding of each series to be affected. The Indenture also contains provisions permitting
the Holders of specified percentages in principal amount of the Securities of each series at the
time Outstanding, on behalf of the Holders of all Securities of such series, to waive compliance by
the Company with certain provisions of the Indenture and certain past defaults under the Indenture
and their consequences. Any such consent or waiver by the Holder of this Security shall be
conclusive and binding upon such Holder and upon all future Holders of this Security and of any
Security issued upon the registration of transfer hereof or in exchange herefor or in lieu hereof,
whether or not notation of such consent or waiver is made upon this Security.

     As provided in and subject to the provisions of the Indenture, the Holder of this Security
shall not have the right to institute any proceeding with respect to the Indenture or for the
appointment of a receiver or trustee or for any other remedy thereunder, unless such Holder shall
have previously given the Trustee written notice of a continuing Event of Default with respect to
the Securities of this series, the Holders of not less than 25% in principal amount of the
Securities of this series at the time Outstanding shall have made written request to the Trustee to
institute proceedings in respect of such Event of Default as Trustee and offered the Trustee
reasonable indemnity and the Trustee shall not have received from the Holders of a majority in
principal amount of Securities of this series at the time Outstanding a direction inconsistent with
such request, and shall have failed to institute any such proceeding, for 60 days after receipt of
such notice, request and offer of indemnity. The foregoing shall not apply to any suit instituted
by the Holder of this Security for the enforcement of any payment of principal hereof or any
premium or interest hereon on or after the respective due dates expressed herein.

     No reference herein to the Indenture and no provision of this Security or of the Indenture
shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay
the principal of (and premium, if any) and interest on this Security at the times, place and rate,
and in the coin or currency, herein prescribed or to convert this Security as provided in the
Indenture.

     As provided in the Indenture and subject to certain limitations therein set forth, the
transfer of this Security is registrable in the Security Register, upon surrender of this Security
for registration of transfer at the office or agency of the Company in any place where the
principal of and any premium and interest on this Security are payable, duly endorsed by, or
accompanied by a written instrument of transfer in form satisfactory to the Company and the
Security Registrar duly executed by, the Holder hereof or his attorney duly authorized in writing,
and

5

 

thereupon one or more new Securities of this series and of like tenor, of authorized
denominations and for the same aggregate principal amount, will be issued to the designated
transferee or transferees.

     The Securities of this series are issuable only in registered form without coupons in
denominations of $2,000 and any integral multiple of $1,000 in excess thereof. As provided in the
Indenture and subject to certain limitations therein set forth, Securities of this series are
exchangeable for a like aggregate principal amount of Securities of this series and of like tenor
of a different authorized denomination, as requested by the Holder surrendering the same.

     No service charge shall be made for any such registration of transfer or exchange, but the
Company or the Security Registrar may require payment of a sum sufficient to cover any tax or other
governmental charge payable in connection therewith.

     Prior to due presentment of this Security for registration of transfer, the Company, the
Trustee and any agent of the Company or the Trustee may treat the Person in whose name this
Security is registered as the owner hereof for all purposes, whether or not this Security be
overdue, and neither the Company, the Trustee nor any such agent shall be affected by notice to the
contrary.

     All terms used in this Security which are defined in the Indenture shall have the meanings
assigned to them in the Indenture.

6

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