MEMC ELECTRONIC MATERIALS INC
8-K, 1998-10-22
SEMICONDUCTORS & RELATED DEVICES
Previous: C P CLARE CORP, S-8, 1998-10-22
Next: MEMC ELECTRONIC MATERIALS INC, 10-K/A, 1998-10-22



<PAGE>   1
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT
                       PURSUANT TO SECTION 13 OR 15(d) OF
                       THE SECURITIES EXCHANGE ACT OF 1934


       Date of Report (Date of earliest event reported): OCTOBER 21, 1998

                         MEMC ELECTRONIC MATERIALS, INC.
           -----------------------------------------------------------
             (Exact Name of Registrant as Specified in its Charter)


               Delaware                 1-13828                  56-1505767
          -----------------       ------------------     ----------------------
           (State or Other         (Commission File            (IRS Employer
           Jurisdiction of              Number)           Identification Number)
            Incorporation)


                       501 Pearl Drive (City of O'Fallon)
                           St. Peters, Missouri 63376
                     (Address of Principal Executive Office)



       Registrant's telephone number, including area code: (314) 279-5500

================================================================================



<PAGE>   2


Item 5.  Other Events

         Special Incentive Bonus Plan

         In March 1998, MEMC adopted a Special Incentive Bonus Program (the
"Program") designed to retain the services of certain officers and key employees
during the period commencing April 1, 1998 and ending June 30, 1999 (the
"Retention Period"). Under the Program, the participants received a special
incentive bonus. Fifty percent (50%) of the special incentive bonus (the
"Advance Payment") was paid to each participant at the time the participant
executed a special incentive bonus agreement with MEMC. The remaining fifty
percent (50%) of each participant's special incentive bonus will be paid on June
30, 1999 provided that such participant remains an employee of MEMC through June
30, 1999.

         In the event a participant terminates his or her employment with MEMC
prior to April 1, 1999, the incentive bonus agreement provides that such
participant must reimburse MEMC the entire amount of the Advance Payment.
Notwithstanding the foregoing, no reimbursement of the Advance Payment is
required in the event of the death or total and permanent disability of a
participant, or in the event a participant's employment with MEMC is
involuntarily terminated by MEMC as a result of a change in control of MEMC or a
reduction in MEMC's workforce.

         In the event a participant terminates his or her employment with MEMC
after March 31, 1999 and before July 1, 1999, the incentive bonus agreement
provides that such participant must reimburse MEMC a pro rata portion of the
Advance Payment (such reimbursement based on the 


<PAGE>   3

portion of the Retention Period during which the participant failed to remain
an employee of MEMC).

         There are 24 participants in the special incentive plan, including
eleven executive officers. Approximately $2.9 million of special incentive
bonuses were awarded to these participants under the plan. Specifically, MEMC
awarded, among others, the following special incentive bonuses pursuant to the
terms of the Program: BFr 9,270,006 (approximately $250,000) to Marcel Coinne,
$250,000 to Ralph D. Hartung, and $250,000 to James M. Stolze.

         Employment Agreement with Klaus R. von Horde

         MEMC and Klaus R. von Horde entered into an Employment Agreement on
April 8, 1998 (the "von Horde Agreement"), which provides for his employment as
MEMC's President and Chief Operating Officer from April 1, 1998 through March
31, 2003. The von Horde Agreement provides that Mr. von Horde receive a base
salary of $416,000 per annum, which may be increased, but not decreased, at the
discretion of the Compensation Committee of MEMC's Board of Directors (the
"Compensation Committee") based upon performance. Pursuant to the von Horde
Agreement, Mr. von Horde also is eligible to receive an annual bonus (the
"Annual Bonus"), which is targeted at one hundred forty percent (140%) of his
base salary. The Annual Bonus is conditioned on the achievement of certain
performance objectives set by the Compensation Committee. In addition, the von
Horde Agreement provides, in accordance with the MEMC Equity Incentive Plan,
that Mr. von Horde shall receive annually options to purchase shares of the
Company's common stock. For the 1998 plan year, Mr. von Horde received options
to purchase 138,000 shares of the Company's common stock at an exercise price of
$15.25 per share. The options received by Mr. von Horde vest at the rate of
twenty-five percent (25%) per year. Either party may terminate the von Horde
Agreement upon twelve months prior written notice. If MEMC terminates Mr. von
Horde without cause, MEMC would be obligated to (i) pay his salary accrued
through the date of termination, (ii) pay him a pro rata bonus (at the same time
and on the same criteria as other MEMC executives), and (iii) reimburse him for
reasonable relocation expenses to Germany. Termination by MEMC without cause
would also vest all of Mr. von Horde's stock options, which would remain
outstanding for three years. Pursuant to the von Horde Agreement, Mr. von Horde
is subject to MEMC's Confidentiality Agreement.

         Termination Agreement with Ralph D. Hartung

         On May 19, 1998, MEMC and Ralph D. Hartung entered into a Separation
Agreement, General Release and Covenant Not to Sue (the "Hartung Agreement"),
which settles all matters relating to his employment and separation. Pursuant to
the Hartung Agreement, Mr. Hartung agreed: (1) to resign and separate from MEMC
as of August 1, 1998, (2) not to file suit against MEMC, (3) to release certain
claims, if any, against MEMC, (4) to continue to comply with the confidentiality
obligations under his employment agreement with MEMC and (5) not to disparage
MEMC. In consideration for the foregoing, MEMC: (1) paid Mr. Hartung a lump sum
of approximately $263,942 and accrued and unused vacation as of August 1, 1998,
(2) will provide Mr. Hartung pension benefits and retiree medical and life
insurance, and (3) will treat his separation as a retirement for purposes of
MEMC's 1995 Equity Incentive Plan. In addition, if 


<PAGE>   4
prior to December 31, 1998, the MEMC Compensation Committee removes the six
percent (6%) limitation on the amount of annual increases in base salary that
may be taken into consideration for purposes of determining final average pay
under the MEMC Pension Plan and the MEMC Supplemental Executive Pension Plan,
then MEMC agreed to determine (on a retroactive basis) the benefits payable to
Mr. Hartung under such plans without regard to such six percent (6%) limitation.
As a part of the Hartung Agreement, MEMC waived its right to recover $125,000 it
paid to Mr. Hartung pursuant to the Special Incentive Bonus Program.
Additionally, MEMC agreed to comply with the terms of a prior international
assignment agreement between the two, which provides, among other things, that
MEMC will provide to Mr. Hartung: (i) income tax return preparation assistance,
(ii) tax equalization payments, and (iii) reimbursement of relocation expenses.

         Board of Directors and Executive Officers

         On August 12, 1998, the Company appointed Helmut Mamsch, age 53, to the
position of Chairman of the Board and Dr. Hans Michael Gaul, age 56, to the
Board of Directors.

         Mr. Mamsch has been a member of MEMC's Board of Directors since March
1998. He replaced Dr. Erhard Meyer-Galow as Chairman of the Board. Dr.
Meyer-Galow remains a member of the MEMC Board of Directors through December 8,
1998. Dr. Hans Michael Gaul filled the position vacated by Mr. Armin-Peter Bode,
who resigned from the Board of Directors in March 1998.

         Mr. Mamsch became a member of the Board of Management of VEBA AG in
1993 and recently assumed responsibility for VEBA's corporate strategy and
development. Previously, he served as a member of the Board of Management of
Raab Karcher AG where he was responsible for the Electronics Division and
ultimately became Chairman of the Board of Management in 1991. Mr. Mamsch also
served as the Chairman of the Board of Management of Stinnes AG from July 1996
until March 1998. Prior to that, he had 17 years of management experience at
Coutinho Caro & Co. AG. Mr. Mamsch also serves on the Supervisory Boards of
Commerzbank AG, Kali und Salz Beteiligungs AG, Readymix AG, SGE Deutsche Holding
GmbH and Steag AG and the Board of Directors of Logica Plc.

         Dr. Gaul became a member of the Board of Management of VEBA AG in 1990
and has served as Chief Financial Officer since 1996. Previously, he served as a
member of the Board of Management of PreussenElektra AG for 12 years where he
was responsible for legal affairs and subsequently for procurement, distribution
companies and marketing and sales. Dr. Gaul became Deputy Chairman of the Board
of Management of PreussenElektra AG in 1993. He also serves on the Supervisory
Boards of Allianz Versicherungs AG, Degussa AG, Deutsche Krankenversicherung AG,
Huls AG, RAG Aktiengesellschaft, VAW aluminum AG and Volkswagen AG.

         The appointment of Mr. Mamsch and Dr. Gaul is described in the
Company's press release issued on August 13, 1998, which is incorporated herein
by reference. A Copy of the August 13, 1998 press release is attached hereto as
Exhibit 99.1.

          In addition to the recent changes on the Board of Directors, four
executive officers of the Company have resigned to pursue other interests.
Werner Schmitz resigned from his position as Executive Vice President effective
as of June 30, 1998, Charles W. Cook, Jr. resigned from his position as
Corporate Vice President effective as of July 13, 1998, Huston E. Sherrill
resigned from his position as Corporate Vice President effective as of August 1,
1998, and Ralph D. Hartung resigned from his position as Corporate Vice
President effective as of August 1, 1998. The Company has not filled any of the
vacancies created by these four resignations.


<PAGE>   5

         Amendment to PHC Technical Agreement

         Effective as of September 30, 1998, MEMC and POSCO HULS Co., Ltd.
("PHC") extended the term of the Technical Agreement between MEMC and PHC from
September 30, 1998 to December 31, 1998. PHC is a joint venture in South Korea
among MEMC, Samsung Electronic Co., Ltd. and Pohang Iron and Steel. Under the
Technical Agreement, MEMC provides, among other things, technical assistance and
information to PHC. MEMC has granted PHC licenses to certain technology to
manufacture and sell silicon wafers. In return, PHC pays certain royalties to
MEMC. MEMC and PHC are in the process of negotiating a long-term extension of
the Technical Agreement. The parties have agreed that the terms of any such
long-term extension will be retroactive to October 1, 1998.

         Debt Restructuring

On October 1, 1998, MEMC announced that it received an additional three-year
$100 million revolving credit facility from VEBA AG. This new credit facility is
in addition to the $50 million revolving credit facility from VEBA AG that was
made available to the Company on June 30, 1998. In addition, all outstanding
debt with VEBA AG and its affiliates maturing prior to January 1, 2001 will be
extended to the respective maturity anniversaries in 2001. As part of this
agreement, MEMC agreed to increases in the interest rates payable on the
Company's existing outstanding debt with VEBA AG and its affiliates. MEMC is
approximately fifty-three percent (53%) owned by VEBA AG through its U.S.
subsidiary VEBA Corporation.

          The debt restructuring is described in the Company's press release
issued on October 1, 1998, which is attached hereto as Exhibit 99.2 and
incorporated herein by reference.  Copies of the various agreements are attached
hereto as Exhibits 10-cc(1) to 10-mmm(1), 10-xxx(1), and 10-zzz.


<PAGE>   6


         Coinne International Transfer Agreement

         Effective October 1, 1998, MEMC entered into an International Transfer
Letter Agreement with Marcel Coinne (the "Coinne Agreement"), which provides for
the transfer of certain payroll administration responsibilities related to Mr.
Coinne from Huls Benelux S.A. to MEMC. The Coinne Agreement provides that Mr.
Coinne receive a base salary of $230,000, reduced by the amount of certain
insurance and retirement expenses. Pursuant to the Coinne Agreement, Mr. Coinne
is eligible to receive bonuses through the MEMC Electronic Materials, Inc.
Annual Incentive Plan and Long Term Incentive Plan and to participate in certain
medical, insurance, and pension plans. The Coinne Agreement also provides for a
one-time payment to Mr. Coinne of $115,000, which is payable in two
installments. In the event Mr. Coinne is terminated without cause, MEMC would be
obligated to provide a lump sum payment equal to two weeks of pay for each year
of service, plus one additional week of pay. The Coinne Agreement also obligates
MEMC to pay certain relocation expenses in the event of Mr. Coinne's retirement
or termination and certain transportation expenses.

         1999 Capital Expenditures

         The Company anticipates that it will reduce capital expenditures in
1999 to a level at least fifty percent (50%) less than its capital expenditure
levels for 1998. This statement regarding expected capital expenditures in 1999
is a forward-looking statement. Actual results could differ materially from the
expectations described above due to, among other things, the preliminary nature
of the Company's plans and the demand for the Company's silicon wafers.

Item 7.  Financial Statements and Exhibits

         C.  Exhibits

              Exhibit No.                    Description
             ------------                    ------------
                                             
              10-g(1)            Second Amendment to Technical Agreement
                                 effective as of September 30, 1998 between the
                                 Company and POSCO HULS Co., Ltd.

              10-cc(1)           First Amendment to Credit Agreement effective
                                 as of September 1, 1998 between the Company and
                                 VEBA Corporation (formerly Huls Corporation) 
                                 "VEBA Corporation"

              10-dd(1)           First Amendment to Credit Agreement effective
                                 as of September 1, 1998 between the Company and
                                 VEBA Corporation

              10-ee(1)           First Amendment to Credit Agreement effective
                                 as of September 1, 1998 between the Company and
                                 VEBA Corporation

              10-ff(1)           First Amendment to Credit Agreement effective
                                 as of September 1, 1998 between the Company and
                                 VEBA Corporation
<PAGE>   7

              10-gg(2)           Second Amendment to Credit Agreement effective
                                 as of September 1, 1998 between the Company and
                                 Huls AG

              10-hh(1)           First Amendment to Credit Agreement effective
                                 as of September 1, 1998 between the Company and
                                 VEBA Corporation

              10-ii(2)           Second Amendment to Revolving Credit Agreement
                                 effective as of September 1, 1998 between the
                                 Company and Huls AG

              10-qq(1)           First Amendment to Credit Agreement effective
                                 as of September 1, 1998 between the Company and
                                 Huls AG

              10-rr(1)           First Amendment to Credit Agreement effective
                                 as of September 1, 1998 between the Company and
                                 Huls AG

              10-ss(1)           First Amendment to Credit Agreement effective
                                 as of September 1, 1998 between the Company and
                                 Huls AG

              10-tt(1)           First Amendment to Credit Agreement effective
                                 as of September 1, 1998 between the Company and
                                 Huls AG

              10-ccc(1)          First Amendment to Credit Agreement effective
                                 as of September 1, 1998 between the Company and
                                 Huls AG

              10-ddd(1)          First Amendment to Credit Agreement effective
                                 as of September 1, 1998 between the Company and
                                 Huls AG

              10-eee(1)          First Amendment to Credit Agreement effective
                                 as of September 1, 1998 between the Company and
                                 Huls AG

              10-fff(1)          First Amendment to Overnight Loan Agreement
                                 effective as of September 1, 1998 between the
                                 Company and VEBA Corporation

              10-jjj(1)          First Amendment to Credit Agreement effective
                                 as of September 1, 1998 between the Company and
                                 VEBA Corporation

              10-kkk(1)          First Amendment to Credit Agreement effective
                                 as of September 1, 1998 between the Company and
                                 VEBA Corporation

              10-lll(1)          First Amendment to Credit Agreement effective
                                 as of September 1, 1998 between the Company and
                                 VEBA Corporation

              10-mmm(1)          First Amendment to Credit Agreement effective
                                 as of September 1, 1998 between the Company and
                                 VEBA Corporation


<PAGE>   8

              10-rrr             Special Incentive Bonus Agreement dated as of
                                 March 26, 1998 between the Company and Marcel
                                 Coinne (Incorporated by reference to Exhibit
                                 10-rrr of the Company's Form 10-Q for the
                                 Quarter ended June 30, 1998)

              10-sss             Special Incentive Bonus Agreement dated as
                                 of March 24, 1998 between the Company and
                                 Ralph D. Hartung (Incorporated by reference
                                 to Exhibit 10-sss of the Company's Form
                                 10-Q for the Quarter ended June 30, 1998)

              10-ttt             Special Incentive Bonus Agreement dated as
                                 of March 31, 1998 between the Company and
                                 James M. Stolze (Incorporated by reference
                                 to Exhibit 10-ttt of the Company's Form
                                 10-Q for the Quarter ended June 30, 1998)

              10-uuu             Employment Agreement effective as of April
                                 1, 1998 between the Company and Klaus R.
                                 von Horde (Incorporated by reference to
                                 Exhibit 10-uuu of the Company's Form 10-Q
                                 for the Quarter ended June 30, 1998)

              10-www             Agreement dated May 19, 1998 between the
                                 Company and Ralph D. Hartung (Incorporated
                                 by reference to Exhibit 10-www of the
                                 Company's Form 10-Q for the Quarter ended
                                 June 30, 1998)

              10-xxx(1)          First Amendment to Loan Agreement effective as
                                 of September 1, 1998 between the Company and
                                 VEBA Corporation

              10-yyy             International Transfer Letter Agreement
                                 effective as of October 1, 1998 between the
                                 Company and Marcel Coinne

              10-zzz             Revolving Credit Agreement dated as of
                                 September 23, 1998 between the Company and VEBA
                                 AG

              99.1               Press Release dated August 13, 1998

              99.2               Press Release dated October 1, 1998



<PAGE>   9


                                    SIGNATURE

         Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.


                                    MEMC Electronic Materials, Inc.

Date: October 22, 1998              By:   /s/ James M. Stolze
                                         _______________________________________
                                              James M. Stolze
                                              Executive Vice President and
                                              Chief Financial Officer



<PAGE>   10


                                  EXHIBIT INDEX

         This Exhibit is numbered in accordance with the Exhibit Table of Item
601 of Regulation S-K:


Exhibit No.                           Description
- -----------                          ------------
                                      
10-g(1)             Second Amendment to Technical Agreement effective as of
                    September 30, 1998 between the Company and POSCO Huls Co.,
                    Ltd.

10-cc(1)            First Amendment to Credit Agreement effective as of
                    September 1, 1998 between the Company and VEBA Corporation
                    (formerly Huls Corporation) "VEBA Corporation"

10-dd(1)            First Amendment to Credit Agreement effective as of
                    September 1, 1998 between the Company and VEBA Corporation

10-ee(1)            First Amendment to Credit Agreement effective as of
                    September 1, 1998 between the Company and VEBA Corporation

10-ff(1)            First Amendment to Credit Agreement effective as of
                    September 1, 1998 between the Company and VEBA Corporation

10-gg(2)            Second Amendment to Credit Agreement effective as of
                    September 1, 1998 between the Company and Huls AG

10-hh(1)            First Amendment to Credit Agreement effective as of
                    September 1, 1998 between the Company and VEBA Corporation

10-ii(2)            Second Amendment to Revolving Credit Agreement effective as
                    of September 1, 1998 between the Company and Huls AG

10-qq(1)            First Amendment to Credit Agreement effective as of
                    September 1, 1998 between the Company and Huls AG

10-rr(1)            First Amendment to Credit Agreement effective as of
                    September 1, 1998 between the Company and Huls AG

10-ss(1)            First Amendment to Credit Agreement effective as of
                    September 1, 1998 between the Company and Huls AG

10-tt(1)            First Amendment to Credit Agreement effective as of
                    September 1, 1998 between the Company and Huls AG

10-ccc(1)           First Amendment to Credit Agreement effective as of
                    September 1, 1998 
<PAGE>   11
                    between the Company and Huls AG

10-ddd(1)           First Amendment to Credit Agreement effective as of
                    September 1, 1998 between the Company and Huls AG

10-eee(1)           First Amendment to Credit Agreement effective as of
                    September 1, 1998 between the Company and Huls AG

10-fff(1)           First Amendment to Overnight Loan Agreement effective as of
                    September 1, 1998 between the Company and VEBA Corporation

10-jjj(1)           First Amendment to Credit Agreement effective as of
                    September 1, 1998 between the Company and VEBA Corporation

10-kkk(1)           First Amendment to Credit Agreement effective as of
                    September 1, 1998 between the Company and VEBA Corporation

10-lll(1)           First Amendment to Credit Agreement effective as of
                    September 1, 1998 between the Company and VEBA Corporation

10-mmm(1)           First Amendment to Credit Agreement effective as of
                    September 1, 1998 between the Company and VEBA Corporation

10-rrr              Special Incentive Bonus Agreement dated as of March 26, 1998
                    between the Company and Marcel Coinne (Incorporated by
                    reference to Exhibit 10-rrr of the Company's Form 10-Q for
                    the Quarter ended June 30, 1998)

10-sss              Special Incentive Bonus Agreement dated as of March 24, 1998
                    between the Company and Ralph D. Hartung (Incorporated by
                    reference to Exhibit 10-sss of the Company's Form 10-Q for
                    the Quarter ended June 30, 1998)

10-ttt              Special Incentive Bonus Agreement dated as of March 31, 1998
                    between the Company and James M. Stolze (Incorporated by
                    reference to Exhibit 10-ttt of the Company's Form 10-Q for
                    the Quarter ended June 30, 1998)

10-uuu              Employment Agreement effective as of April 1, 1998 between
                    the Company and Klaus R. von Horde (Incorporated by
                    reference to Exhibit 10-uuu of the Company's Form 10-Q for
                    the Quarter ended June 30, 1998)

10-www              Agreement dated May 19, 1998 between the Company and Ralph
                    D. Hartung (Incorporated by reference to Exhibit 10-www of
                    the Company's Form 10-Q for the Quarter ended June 30, 1998)

10-xxx(1)           First Amendment to Loan Agreement effective as of September
                    1, 1998 between the Company and VEBA Corporation
<PAGE>   12

10-yyy              International Transfer Letter Agreement effective as of
                    October 1, 1998 between the Company and Marcel Coinne

10-zzz              Revolving Credit Agreement dated as of September 23, 1998
                    between the Company and VEBA AG

99.1                Press Release dated August 13, 1998

99.2                Press Release dated October 1, 1998




<PAGE>   1
                                                                 EXHIBIT 10-G(1)
                     SECOND AMENDMENT TO TECHNICAL AGREEMENT

This Second Amendment to Technical  Agreement - Silicon Wafer Manufacturing (the
"Second  Amendment")  is effective as of September 30, 1998, by and between MEMC
ELECTRONIC  MATERIALS,  INC., a Delaware  corporation  ("MEMC"),  and POSCO HULS
COMPANY LIMITED, a Korea  corporation  ("PHC").  All terms used herein,  unless
otherwise  defined,  shall  have  the  same  meanings  ascribed  to  them in the
Agreement (as defined below).

                                    RECITALS

A.        MEMC  and  PHC  made  and   entered   into  that   certain   Technical
          Agreement  --  Silicon  Wafer  Manufacturing  as of December 19,  1990
          and  that  certain  Amendment  to Technical Agreement effective as  of
          January       1,       1995       (as       so      amended,       the
          "Agreement").

B.       Section  14.03 of the  Agreement  provides that it will expire five (5)
         years from the Date of First Commercial Production (September 30, 1993)
         or on September 30, 1998 unless the parties have renegotiated the terms
         thereof.

C.       The parties are in the process of renegotiating in good faith the terms
         of the  Agreement,  and wish to extend the term  thereof  for three (3)
         months in order to allow them to complete their negotiations.

NOW, THEREFORE, pursuant to Section 17.03 of the Agreement, the parties agree as
follows:

1.       Extension of Term.

          a.   Section  14.03 of the  Agreement  shall be amended to read in its
               entirety as follows:

               "It  is   understood   that,  in  the  case  of  failure  of  the
               negotiations under Section 3.5 of this Agreement,  this Agreement
               shall expire on December 31, 1998, and such expiration  shall not
               act to terminate  rights and licenses already granted pursuant to
               this Agreement, provided, however, such rights and licenses shall
               be non-exclusive."

          b.   The  Agreement  is also amended so that the all of the rights and
               obligations  of the parties which expire under the Agreement five
               (5) years from the Date of First Commercial Production, including
               the obligation of the parties to supply technical information and
               continuing  know-how  to each  other  under  Article  III and the
               obligation of PHC to pay MEMC a running  royalty under Article V,
               shall continue through December 31, 1998.

          c.   The parties will  endeavor to complete  another  amendment to the
               agreement by December 31, 1998; such  additional  agreement shall
               be  retroactively  effective as of October 1, 1998  regardless of
               the date of execution.  The Second Amendment shall  automatically
               expire upon execution of the additional agreement.

2.       Effect

         This Second  Amendment shall become effective on September 30, 1998 and
         shall  supercede any provisions of the Agreement  which are in conflict
         with this Second Amendment. All other provisions of the Agreement shall
         remain effective and binding.

IN WITNESS WHEREOF, the parties have executed this Second Amendment as follows:

MEMC ELECTRONIC MATERIALS, INC.                 POSCO HULS COMPANY, LIMITED


By: /s/ Paul V. Pastorek                         By: /s/ Sang Bok Hong
   --------------------------------                 ----------------------------
Title:  Corporate Vice President                 Title:  President
Date:  September 30, 1998                        Date:  September 30, 1998

<PAGE>   1
                                                                EXHIBIT 10-CC(1)

                       FIRST AMENDMENT TO CREDIT AGREEMENT

     This First Amendment to Credit Agreement  ("First  Amendment") is effective
as of  September 1, 1998 between  MEMC  ELECTRONIC  MATERIALS,  INC., a Delaware
corporation  ("Borrower"),  as the  Borrower,  and Huls  Corporation,  a company
formed under the laws of the State of  Delaware,  U.S.A.  ("Huls"),  as the sole
Lender and as Agent.

                                    Recitals


     WHEREAS, Borrower and Huls entered into a Credit Agreement dated as of July
10, 1995 (the "Credit Agreement")  pursuant to which Huls agreed to extend up to
US$10,000,000 of credit to Borrower on a term basis;

     WHEREAS,  Borrower,  Huls and  certain  affiliates  of Huls have  agreed to
extend additional  credit to Borrower and to restructure the existing  financing
provided by Huls and its affiliates to Borrower, and

     WHEREAS, as part of such restructuring,  Borrower and Huls desire to change
the interest rate payable by Borrower to Huls under the Credit Agreement.

     NOW THEREFORE,  in consideration  of the foregoing  premises and the mutual
covenants and conditions hereinafter set forth, the parties agree as follows:

     1. The  definitions  of  "Applicable  Margin",  "Base  Rate",  "Performance
Level",  "Performance Level I", "Performance Level II",  "Performance Level III"
and  "Performance  Level IV" in Section 1.01 of the Credit  Agreement are hereby
deleted in their entirety.

     2. The following  definitions  are hereby  inserted in proper  alphabetical
order into Section 1.01 of the Credit Agreement:

          "Applicable  Spread" means a percentage  per annum equal to the excess
     of (a) the Bloomberg  fair market  sector  curves  (adjusted for the chosen
     interest  rate method)  applicable  two business  days prior to the Initial
     Maturity  Date to a B3 rated  industrial  borrower  for the period from the
     Initial  Maturity  Date through the latest  possible  Final  Maturity  Date
     (taking into account,  if applicable,  the latest Extension  Maturity Date)
     over (b) the corresponding Swap Rate for such period.

          "Extension Certificate" has the meaning specified in Section 2.14.

          "Extension  Period Interest Rate" means two business days prior to the
     Initial  Maturity Date, (a) either the British Bankers'  Association  (BBA)
     LIBOR rate (as shown on the Reuters page FRBD or comparable  pages) for the
     12-month  period or the Swap Rate for the  24-month  period or the 36-month
     period  commencing  from the  Initial  Maturity  Date as  follows:  (i) the
     36-month  period for  Advances  subject to an Initial  Maturity  Date on or
     prior to December 31, 1998, (ii) the 24-month  period for Advances  subject
     to an Initial  Maturity Date on or prior to December 31, 1999, or (iii) the
     12-month period for all other Advances, plus (b) the Applicable Spread.

          "Extension Request Notice" has the meaning set forth in Section 2.14.

          "Extension Maturity Date", if any, means the earlier of (a) either (i)
     the first  anniversary  of the Initial  Maturity Date, or (ii) if there has
     been an earlier applicable  Extension Maturity Date on or prior to December
     31, 1999, the first  anniversary of such prior Extension  Maturity Date, or
     (iii) if there has been an earlier applicable Extension Maturity Date after
     December 31, 1999 and on or before December 31, 2000, the first anniversary
     of such prior  Extension  Maturity Date and (b) the termination in whole of
     the Commitments pursuant to Section 6.01; provided,  that in no event shall
     an Extension Maturity Date be after December 31, 2001.

          "Initial Maturity Date" for any Advance means April 19, 2000.

          "Replacement Financing Arrangement" means a financing arrangement with
     any  Person who is not an  Affiliate  of the  Borrower  or the Agent or any
     Lender on  substantially  the terms which would apply hereunder  during the
     period from the then applicable  Final Maturity Date to the latest possible
     Extension   Maturity  Date,   provided  that  the  interest  rate  of  such
     Replacement  Financing  Arrangement  shall be no higher than the  Extension
     Period Interest Rate and, if no lesser interest rate is available, shall be
     the Extension Period Interest Rate.

          "Swap Rate" means the US-Dollar  denominated  interbank  interest rate
     swap  rates/LIBOR  offered  rates as shown on  Reuters  page ICAP and other
     comparable  brokerage  pages,  adjusted for the chosen interest rate method
     (annual/semi-annual compounding, etc.).

     3. The definition of "Change of Control Date" in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Change of Control  Date" means the date of  occurrence of a Change of
     Control;  provided,  that if such  occurrence  is on or prior to January 1,
     2001, the occurrence shall be deemed to have occurred on January 1, 2001.
<PAGE>   2

     4. The  definition  of  "Eligible  Assignee"  in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Eligible  Assignee"  means any Person approved by all of the Lenders;
     provided,  however,  that neither the Borrower  nor any  Subsidiary  of the
     Borrower shall qualify as an Eligible Assignee.

     5. The definition of "Final Maturity Date" set forth in Section 1.01 of the
Credit  Agreement  is  hereby  deleted  in its  entirety  and the  following  is
substituted in lieu thereof:

          "Final  Maturity  Date"  means the  earlier of (a) either the  Initial
     Maturity Date or, if  applicable,  the Extension  Maturity Date and (b) the
     termination in whole of the Commitments pursuant to Section 6.01.

     6. Section 2.03 of the Credit Agreement shall be amended as follows: in the
fifth line, "1/8 of 1%" is hereby deleted and "1/4 of 1%" is substituted in lieu
thereof.

     7.  Section  2.05(a)  of the  Credit  Agreement  is hereby  deleted  in its
entirety and the following is substituted in lieu thereof:

          "(a)  Interest on the  Advances.  From  September 1, 1998,  until such
     principal  amount shall be paid in full, the Borrower shall pay interest on
     the unpaid principal  amount of the Advances,  if any, which interest shall
     be payable  semiannually,  at an  interest  rate per annum equal to 7.796%;
     provided,  however,  that,  if the  Initial  Maturity  Date is on or  after
     January 1, 2001, as of the date occurring 45 Business Days after the Change
     of Control  Date,  the  interest  rate per annum shall be the higher of (x)
     7.796% and (y) the rate  determined  under clause (a) of the  definition of
     Extension Period Interest Rate, determined as of the Change of Control Date
     (rather  than the  Initial  Maturity  Date),  plus the  Applicable  Spread;
     provided,  that in the event of an extension of the then  applicable  Final
     Maturity  Date to the  Extension  Maturity  Date  pursuant to Section  2.14
     hereto,  from the then  applicable  Final  Maturity  Date to the  Extension
     Maturity  Date, the interest rate per annum shall be equal to the Extension
     Period Interest Rate."

     8. Section 2.06  (Interest  Rate  Determination  Upon Change of Control) is
hereby deleted in its entirety and the following is substituted in lieu thereof:
"SECTION 2.06. RESERVED."

     9. The  following  Section 2.14 is hereby added at the end of Article II of
the Credit Agreement:

          "SECTION 2.14.  Extension.  If the then applicable Final Maturity Date
     is a date on or before  December  31, 2000 and the Borrower may desire that
     the Lenders extend the then applicable Final Maturity Date to the Extension
     Maturity Date, then (a) the Borrower shall give written notice of said fact
     (the "Extension Request Notice") to the Agent and the Lenders no later than
     four (4) months before the Final  Maturity Date, (b) the Borrower shall use
     its best  efforts  to obtain  and enter into on or before the date which is
     two  months  prior  to the  Final  Maturity  Date a  Replacement  Financing
     Arrangement  and  (c)  if  the  Borrower  shall  not  have  entered  into a
     Replacement Financing Arrangement on or before the date which is two months
     prior to the Final  Maturity  Date, the Borrower shall deliver to the Agent
     and the Lenders a certificate of the Borrower (the "Extension Certificate")
     (x)  certifying  that  the  Borrower  has not  entered  into a  Replacement
     Financing  Arrangement,  but the Borrower used its best efforts to do so as
     required by clause (b) and setting forth such  evidence and back-up  detail
     as necessary to  demonstrate  the efforts made,  including a written letter
     from each bank from which a Replacement  Financing  Arrangement as required
     by clause (b) was requested,  indicating  that Borrower made such a request
     and that the request was denied, and (y) requesting that the Final Maturity
     Date be extended  to the  Extension  Maturity  Date.  For  purposes of this
     Section, the Borrower shall be deemed to have complied with the requirement
     to use its "best efforts" by requesting from and, if applicable, diligently
     negotiating a Replacement  Financing  Arrangement as required by clause (b)
     with each of three (3) commercial  banks that are nationally  recognized in
     the United States and each have total assets in excess of  $20,000,000,000.
     The Agent shall have the right to designate,  within ten (10) Business Days
     after  receipt  of an  Extension  Request  Notice,  one of the three  banks
     referred  to in the  preceding  sentence.  For  purposes  of this  Section,
     diligent  negotiation  shall mean  negotiation  in good  faith and  without
     denial or unreasonable delay of any reasonable request by any such bank for
     information in connection with its consideration of providing a Replacement
     Financing  Arrangement  to Borrower.  For the  avoidance of doubt,  nothing
     herein is  intended  to  prevent  Borrower  from  obtaining  a  Replacement
     Financing  Arrangement  on terms  equal to or better  than  those  provided
     hereunder.

          Following receipt of the Extension  Certificate,  the Agent and/or the
     Lenders  shall have the right  (without any  obligation to do so) to obtain
     for the Borrower a Replacement  Financing  Arrangement on terms equal to or
     better than those provided hereunder.

          If the Borrower has (a) delivered the Extension  Request Notice within
     the time period  specified  above,  (b) used its best efforts to obtain and
     

<PAGE>   3

     enter into a Replacement  Financing Arrangement and delivered the Extension
     Certificate within the time period specified above and (c) not unreasonably
     or in bad faith refused to enter into a Replacement  Financing  Arrangement
     (with terms equal to or better than those provided  hereunder) obtained for
     the Borrower by the Agent or any of the Lenders  pursuant to the  preceding
     paragraph,  the Final  Maturity  Date shall be  extended  to the  Extension
     Maturity Date and the interest rate shall be the Extension  Period Interest
     Rate.  The Agent shall provide the Borrower with a written  notice  setting
     forth the Extension Period Interest Rate.

          The Borrower  shall be  responsible  for the payment of any  customary
     commitment  fee and other fees in connection  with  obtaining a Replacement
     Financing Arrangement.

          For the  avoidance of doubt,  in no event shall an Extension  Maturity
     Date be requested by the Borrower  after  December 31, 2000 or be on a date
     after December 31, 2001."

     10. Section 5.02 of the Credit Agreement is deleted in its entirety and the
following is substituted in lieu thereof:

          "SECTION 5.02. Negative Covenants.  On and after September 1, 1998 and
     so long as any Advance  shall  remain  unpaid or any Lender  shall have any
     Commitment  hereunder,  the  Borrower  will not,  unless the Lenders  shall
     otherwise consent in writing:

               (a) Liens,  etc.  Create or suffer to exist, or permit any of its
          Subsidiaries to create or suffer to exist, any lien, security interest
          or other  charge or  encumbrance,  or any other  type of  preferential
          arrangement,  upon or with respect to any of its  properties,  whether
          now owned or  hereafter  acquired,  or  assign,  or permit  any of its
          Subsidiaries to assign,  any right to receive income,  in each case to
          secure any Debt of any Person, other than:

                    (i)  purchase   money  liens  or  purchase   money  security
               interests  upon  or in  any  property  acquired  or  held  by the
               Borrower or any Subsidiary in the ordinary  course of business to
               secure  the  purchase   price  of  such  property  or  to  secure
               indebtedness  incurred  solely for the purpose of  financing  the
               acquisition of such property;

                    (ii) liens or security  interests  existing on such property
               at the time of its  acquisition  (other  than  any  such  lien or
               security interest created in contemplation of such acquisition);

                    (iii) liens for taxes, assessments and government charges or
               levies  to the  extent  not  required  to be paid  under  Section
               5.01(b) hereof;

                    (iv)   liens   imposed  by  law,   such  as   materialmen's,
               mechanics',  carriers', workmen's and repairmen's liens and other
               similar liens arising in the ordinary course of business securing
               obligations  that are not  overdue  for a period  of more than 30
               days;

                    (v) pledges or deposits to secure obligations under workers'
               compensation  laws or similar  legislation or to secure public or
               statutory obligations;

                    (vi)  easements,  rights  of way and other  encumbrances  on
               title to real  property  that do not render title to the property
               encumbered  thereby  unmarketable or materially  adversely affect
               the use of such property for its present purposes; and

                    (vii) liens incurred or deposits made in the ordinary course
               of business to secure the performance of letters of credit, bids,
               tenders, sales contracts,  leases, surety, appeal and performance
               bonds and other  similar  obligations  not incurred in connection
               with the borrowing of money;

          provided,  that the  aggregate  principal  amount of the  Debt,  other
          indebtedness,  taxes,  assessments,  governmental charges or levies or
          other obligations  secured by the liens or security interests referred
          to in clauses  (i) through  (vii) of this  Section  5.02(a)  shall not
          exceed $45,000,000 in the aggregate at any time outstanding.

               (b)  Accounting  Changes.  Make or  permit,  or permit any of its
          Subsidiaries to make or permit,  any change in accounting  policies or
          reporting   practices,   except  as  allowed  by  generally   accepted
          accounting principles."

     11. Unless otherwise  provided herein,  any term in initial capital letters
or all  capital  letters  used as a defined  term but not  defined in this First
Amendment shall have the meaning set forth in the Credit Agreement.

     12.  Except as  modified  herein,  all terms and  conditions  of the Credit
Agreement shall remain in full force and effect.

     13. This First  Amendment shall be governed by, and construed in accordance
<PAGE>   4
   
with, the laws of the State of New York.

     14. This First Amendment may be executed in any number of counterparts  and
by  different  parties  hereto in separate  counterparts,  each of which when so
executed  shall be deemed an  original  and all of which  taken  together  shall
constitute one and the same agreement. Delivery of any executed counterpart of a
signature  page to this First  Amendment  by  telecopier  shall be  effective as
delivery of a manually executed counterpart of this First Amendment.

     IN WITNESS WHEREOF,  the parties hereto have caused this First Amendment to
be executed by their duly authorized representatives effective as of the day and
year first above written.

MEMC ELECTRONIC MATERIALS, INC., as Borrower


By: /s/ Kenneth L. Young
    _________________________________
      Name:  Kenneth L. Young
      Title: Treasurer


HULS CORPORATION, as Agent


By: /s/ H. J. Biangardi
    _________________________________
      Name:  H. J. Biangardi
      Title: President and CEO


By: /s/ John Schaffner
    _________________________________
      Name:  John Schaffner for Mitchell Solomowitz
      Title: Treasurer


HULS CORPORATION, as the sole Lender


By: /s/ H. J. Biangardi
    _________________________________
      Name:  H. J. Biangardi
      Title: President and CEO


By: /s/ John Schaffner
    _________________________________
      Name:  John Schaffner for Mitchell Solomowitz
      Title: Treasurer


<PAGE>   1
                                                                EXHIBIT 10-DD(1)
                       FIRST AMENDMENT TO CREDIT AGREEMENT

     This First Amendment to Credit Agreement  ("First  Amendment") is effective
as of  September 1, 1998 between  MEMC  ELECTRONIC  MATERIALS,  INC., a Delaware
corporation  ("Borrower"),  as the  Borrower,  and Huls  Corporation,  a company
formed under the laws of the State of  Delaware,  U.S.A.  ("Huls"),  as the sole
Lender and as Agent.

                                    Recitals


     WHEREAS, Borrower and Huls entered into a Credit Agreement dated as of July
10, 1995 (the "Credit Agreement")  pursuant to which Huls agreed to extend up to
US$10,000,000 of credit to Borrower on a term basis;

     WHEREAS,  Borrower,  Huls and  certain  affiliates  of Huls have  agreed to
extend additional  credit to Borrower and to restructure the existing  financing
provided by Huls and its affiliates to Borrower, and

     WHEREAS, as part of such restructuring,  Borrower and Huls desire to change
the interest rate payable by Borrower to Huls under the Credit Agreement.

     NOW THEREFORE,  in consideration  of the foregoing  premises and the mutual
covenants and conditions hereinafter set forth, the parties agree as follows:

     1. The  definitions  of  "Applicable  Margin",  "Base  Rate",  "Performance
Level",  "Performance Level I", "Performance Level II",  "Performance Level III"
and  "Performance  Level IV" in Section 1.01 of the Credit  Agreement are hereby
deleted in their entirety.

     2. The following  definitions  are hereby  inserted in proper  alphabetical
order into Section 1.01 of the Credit Agreement:

          "Applicable  Spread" means a percentage  per annum equal to the excess
     of (a) the Bloomberg  fair market  sector  curves  (adjusted for the chosen
     interest  rate method)  applicable  two business  days prior to the Initial
     Maturity  Date to a B3 rated  industrial  borrower  for the period from the
     Initial  Maturity  Date through the latest  possible  Final  Maturity  Date
     (taking into account,  if applicable,  the latest Extension  Maturity Date)
     over (b) the corresponding Swap Rate for such period.

          "Extension Certificate" has the meaning specified in Section 2.14.

          "Extension  Period Interest Rate" means two business days prior to the
     Initial  Maturity Date, (a) either the British Bankers'  Association  (BBA)
     LIBOR rate (as shown on the Reuters page FRBD or comparable  pages) for the
     12-month  period or the Swap Rate for the  24-month  period or the 36-month
     period  commencing  from the  Initial  Maturity  Date as  follows:  (i) the
     36-month  period for  Advances  subject to an Initial  Maturity  Date on or
     prior to December 31, 1998, (ii) the 24-month  period for Advances  subject
     to an Initial  Maturity Date on or prior to December 31, 1999, or (iii) the
     12-month period for all other Advances, plus (b) the Applicable Spread.

          "Extension Request Notice" has the meaning set forth in Section 2.14.

          "Extension Maturity Date", if any, means the earlier of (a) either (i)
     the first  anniversary  of the Initial  Maturity Date, or (ii) if there has
     been an earlier applicable  Extension Maturity Date on or prior to December
     31, 1999, the first  anniversary of such prior Extension  Maturity Date, or
     (iii) if there has been an earlier applicable Extension Maturity Date after
     December 31, 1999 and on or before December 31, 2000, the first anniversary
     of such prior  Extension  Maturity Date and (b) the termination in whole of
     the Commitments pursuant to Section 6.01; provided,  that in no event shall
     an Extension Maturity Date be after December 31, 2001.

          "Initial Maturity Date" for any Advance means January 24, 2001.

          "Replacement Financing Arrangement" means a financing arrangement with
     any  Person who is not an  Affiliate  of the  Borrower  or the Agent or any
     Lender on  substantially  the terms which would apply hereunder  during the
     period from the then applicable  Final Maturity Date to the latest possible
     Extension   Maturity  Date,   provided  that  the  interest  rate  of  such
     Replacement  Financing  Arrangement  shall be no higher than the  Extension
     Period Interest Rate and, if no lesser interest rate is available, shall be
     the Extension Period Interest Rate.

          "Swap Rate" means the US-Dollar  denominated  interbank  interest rate
     swap  rates/LIBOR  offered  rates as shown on  Reuters  page ICAP and other
     comparable  brokerage  pages,  adjusted for the chosen interest rate method
     (annual/semi-annual compounding, etc.).

     3. The definition of "Change of Control Date" in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Change of Control  Date" means the date of  occurrence of a Change of
     Control;  provided,  that if such  occurrence  is on or prior to January 1,
     2001, the occurrence shall be deemed to have occurred on January 1, 2001.
<PAGE>   2

     4. The  definition  of  "Eligible  Assignee"  in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Eligible  Assignee"  means any Person approved by all of the Lenders;
     provided,  however,  that neither the Borrower  nor any  Subsidiary  of the
     Borrower shall qualify as an Eligible Assignee.

     5. The definition of "Final Maturity Date" set forth in Section 1.01 of the
Credit  Agreement  is  hereby  deleted  in its  entirety  and the  following  is
substituted in lieu thereof:

          "Final  Maturity  Date"  means the  earlier of (a) either the  Initial
     Maturity Date or, if  applicable,  the Extension  Maturity Date and (b) the
     termination in whole of the Commitments pursuant to Section 6.01.

     6. Section 2.03 of the Credit Agreement shall be amended as follows: in the
fifth line, "1/8 of 1%" is hereby deleted and "1/4 of 1%" is substituted in lieu
thereof.

     7.  Section  2.05(a)  of the  Credit  Agreement  is hereby  deleted  in its
entirety and the following is substituted in lieu thereof:

          "(a)  Interest on the  Advances.  From  September 1, 1998,  until such
     principal  amount shall be paid in full, the Borrower shall pay interest on
     the unpaid principal  amount of the Advances,  if any, which interest shall
     be payable  semiannually,  at an  interest  rate per annum equal to 7.605%;
     provided,  however,  that,  if the  Initial  Maturity  Date is on or  after
     January 1, 2001, as of the date occurring 45 Business Days after the Change
     of Control  Date,  the  interest  rate per annum shall be the higher of (x)
     7.605% and (y) the rate  determined  under clause (a) of the  definition of
     Extension Period Interest Rate, determined as of the Change of Control Date
     (rather  than the  Initial  Maturity  Date),  plus the  Applicable  Spread;
     provided,  that in the event of an extension of the then  applicable  Final
     Maturity  Date to the  Extension  Maturity  Date  pursuant to Section  2.14
     hereto,  from the then  applicable  Final  Maturity  Date to the  Extension
     Maturity  Date, the interest rate per annum shall be equal to the Extension
     Period Interest Rate."

     8. Section 2.06  (Interest  Rate  Determination  Upon Change of Control) is
hereby deleted in its entirety and the following is substituted in lieu thereof:
"SECTION 2.06. RESERVED."

     9. The  following  Section 2.14 is hereby added at the end of Article II of
the Credit Agreement:

          "SECTION 2.14.  Extension.  If the then applicable Final Maturity Date
     is a date on or before  December  31, 2000 and the Borrower may desire that
     the Lenders extend the then applicable Final Maturity Date to the Extension
     Maturity Date, then (a) the Borrower shall give written notice of said fact
     (the "Extension Request Notice") to the Agent and the Lenders no later than
     four (4) months before the Final  Maturity Date, (b) the Borrower shall use
     its best  efforts  to obtain  and enter into on or before the date which is
     two  months  prior  to the  Final  Maturity  Date a  Replacement  Financing
     Arrangement  and  (c)  if  the  Borrower  shall  not  have  entered  into a
     Replacement Financing Arrangement on or before the date which is two months
     prior to the Final  Maturity  Date, the Borrower shall deliver to the Agent
     and the Lenders a certificate of the Borrower (the "Extension Certificate")
     (x)  certifying  that  the  Borrower  has not  entered  into a  Replacement
     Financing  Arrangement,  but the Borrower used its best efforts to do so as
     required by clause (b) and setting forth such  evidence and back-up  detail
     as necessary to  demonstrate  the efforts made,  including a written letter
     from each bank from which a Replacement  Financing  Arrangement as required
     by clause (b) was requested,  indicating  that Borrower made such a request
     and that the request was denied, and (y) requesting that the Final Maturity
     Date be extended  to the  Extension  Maturity  Date.  For  purposes of this
     Section, the Borrower shall be deemed to have complied with the requirement
     to use its "best efforts" by requesting from and, if applicable, diligently
     negotiating a Replacement  Financing  Arrangement as required by clause (b)
     with each of three (3) commercial  banks that are nationally  recognized in
     the United States and each have total assets in excess of  $20,000,000,000.
     The Agent shall have the right to designate,  within ten (10) Business Days
     after  receipt  of an  Extension  Request  Notice,  one of the three  banks
     referred  to in the  preceding  sentence.  For  purposes  of this  Section,
     diligent  negotiation  shall mean  negotiation  in good  faith and  without
     denial or unreasonable delay of any reasonable request by any such bank for
     information in connection with its consideration of providing a Replacement
     Financing  Arrangement  to Borrower.  For the  avoidance of doubt,  nothing
     herein is  intended  to  prevent  Borrower  from  obtaining  a  Replacement
     Financing  Arrangement  on terms  equal to or better  than  those  provided
     hereunder.

          Following receipt of the Extension  Certificate,  the Agent and/or the
     Lenders  shall have the right  (without any  obligation to do so) to obtain
     for the Borrower a Replacement  Financing  Arrangement on terms equal to or
     better than those provided hereunder.

          If the Borrower has (a) delivered the Extension  Request Notice within
     the time period  specified  above,  (b) used its best efforts to obtain and
<PAGE>   3
     enter into a Replacement  Financing Arrangement and delivered the Extension
     Certificate within the time period specified above and (c) not unreasonably
     or in bad faith refused to enter into a Replacement  Financing  Arrangement
     (with terms equal to or better than those provided  hereunder) obtained for
     the Borrower by the Agent or any of the Lenders  pursuant to the  preceding
     paragraph,  the Final  Maturity  Date shall be  extended  to the  Extension
     Maturity Date and the interest rate shall be the Extension  Period Interest
     Rate.  The Agent shall provide the Borrower with a written  notice  setting
     forth the Extension Period Interest Rate.

          The Borrower  shall be  responsible  for the payment of any  customary
     commitment  fee and other fees in connection  with  obtaining a Replacement
     Financing Arrangement.

          For the  avoidance of doubt,  in no event shall an Extension  Maturity
     Date be requested by the Borrower  after  December 31, 2000 or be on a date
     after December 31, 2001."

     10. Section 5.02 of the Credit Agreement is deleted in its entirety and the
following is substituted in lieu thereof:

          "SECTION 5.02. Negative Covenants.  On and after September 1, 1998 and
     so long as any Advance  shall  remain  unpaid or any Lender  shall have any
     Commitment  hereunder,  the  Borrower  will not,  unless the Lenders  shall
     otherwise consent in writing:

               (a) Liens,  etc.  Create or suffer to exist, or permit any of its
          Subsidiaries to create or suffer to exist, any lien, security interest
          or other  charge or  encumbrance,  or any other  type of  preferential
          arrangement,  upon or with respect to any of its  properties,  whether
          now owned or  hereafter  acquired,  or  assign,  or permit  any of its
          Subsidiaries to assign,  any right to receive income,  in each case to
          secure any Debt of any Person, other than:

                    (i)  purchase   money  liens  or  purchase   money  security
               interests  upon  or in  any  property  acquired  or  held  by the
               Borrower or any Subsidiary in the ordinary  course of business to
               secure  the  purchase   price  of  such  property  or  to  secure
               indebtedness  incurred  solely for the purpose of  financing  the
               acquisition of such property;

                    (ii) liens or security  interests  existing on such property
               at the time of its  acquisition  (other  than  any  such  lien or
               security interest created in contemplation of such acquisition);

                    (iii) liens for taxes, assessments and government charges or
               levies  to the  extent  not  required  to be paid  under  Section
               5.01(b) hereof;

                    (iv)   liens   imposed  by  law,   such  as   materialmen's,
               mechanics',  carriers', workmen's and repairmen's liens and other
               similar liens arising in the ordinary course of business securing
               obligations  that are not  overdue  for a period  of more than 30
               days;

                    (v) pledges or deposits to secure obligations under workers'
               compensation  laws or similar  legislation or to secure public or
               statutory obligations;

                    (vi)  easements,  rights  of way and other  encumbrances  on
               title to real  property  that do not render title to the property
               encumbered  thereby  unmarketable or materially  adversely affect
               the use of such property for its present purposes; and

                    (vii) liens incurred or deposits made in the ordinary course
               of business to secure the performance of letters of credit, bids,
               tenders, sales contracts,  leases, surety, appeal and performance
               bonds and other  similar  obligations  not incurred in connection
               with the borrowing of money;

          provided,  that the  aggregate  principal  amount of the  Debt,  other
          indebtedness,  taxes,  assessments,  governmental charges or levies or
          other obligations  secured by the liens or security interests referred
          to in clauses  (i) through  (vii) of this  Section  5.02(a)  shall not
          exceed $45,000,000 in the aggregate at any time outstanding.

               (b)  Accounting  Changes.  Make or  permit,  or permit any of its
          Subsidiaries to make or permit,  any change in accounting  policies or
          reporting   practices,   except  as  allowed  by  generally   accepted
          accounting principles."

     11. Unless otherwise  provided herein,  any term in initial capital letters
or all  capital  letters  used as a defined  term but not  defined in this First
Amendment shall have the meaning set forth in the Credit Agreement.

     12.  Except as  modified  herein,  all terms and  conditions  of the Credit
Agreement shall remain in full force and effect.

     13. This First  Amendment shall be governed by, and construed in accordance
<PAGE>   4

with, the laws of the State of New York.

     14. This First Amendment may be executed in any number of counterparts  and
by  different  parties  hereto in separate  counterparts,  each of which when so
executed  shall be deemed an  original  and all of which  taken  together  shall
constitute one and the same agreement. Delivery of any executed counterpart of a
signature  page to this First  Amendment  by  telecopier  shall be  effective as
delivery of a manually executed counterpart of this First Amendment.

     IN WITNESS WHEREOF,  the parties hereto have caused this First Amendment to
be executed by their duly authorized representatives effective as of the day and
year first above written.

MEMC ELECTRONIC MATERIALS, INC., as Borrower


By: /s/ Kenneth L. Young
    _________________________________
      Name:  Kenneth L. Young
      Title: Treasurer


HULS CORPORATION, as Agent


By: /s/ H. J. Biangardi
    _________________________________
      Name:  H. J. Biangardi
      Title: President and CEO


By: /s/ John Schaffner
    _________________________________
      Name:  John Schaffner for Mitchell Solomowitz
      Title: Treasurer


HULS CORPORATION, as the sole Lender


By: /s/ H. J. Biangardi
    _________________________________
      Name:  H. J. Biangardi
      Title: President and CEO


By: /s/ John Schaffner
    _________________________________
      Name:  John Schaffner for Mitchell Solomowitz
      Title: Treasurer

<PAGE>   1
                                                                EXHIBIT 10-EE(1)
                       FIRST AMENDMENT TO CREDIT AGREEMENT

     This First Amendment to Credit Agreement  ("First  Amendment") is effective
as of  September 1, 1998 between  MEMC  ELECTRONIC  MATERIALS,  INC., a Delaware
corporation  ("Borrower"),  as the  Borrower,  and Huls  Corporation,  a company
formed under the laws of the State of  Delaware,  U.S.A.  ("Huls"),  as the sole
Lender and as Agent.

                                    Recitals

     WHEREAS, Borrower and Huls entered into a Credit Agreement dated as of July
10, 1995 (the "Credit Agreement")  pursuant to which Huls agreed to extend up to
US$30,000,000 of credit to Borrower on a term basis;

     WHEREAS,  Borrower,  Huls and  certain  affiliates  of Huls have  agreed to
extend additional  credit to Borrower and to restructure the existing  financing
provided by Huls and its affiliates to Borrower, and

     WHEREAS, as part of such restructuring,  Borrower and Huls desire to change
the interest rate payable by Borrower to Huls under the Credit Agreement.

     NOW THEREFORE,  in consideration  of the foregoing  premises and the mutual
covenants and conditions hereinafter set forth, the parties agree as follows:

     1. The  definitions  of  "Applicable  Margin",  "Base  Rate",  "Performance
Level",  "Performance Level I", "Performance Level II",  "Performance Level III"
and  "Performance  Level IV" in Section 1.01 of the Credit  Agreement are hereby
deleted in their entirety.

     2. The following  definitions  are hereby  inserted in proper  alphabetical
order into Section 1.01 of the Credit Agreement:

          "Applicable  Spread" means a percentage  per annum equal to the excess
     of (a) the Bloomberg  fair market  sector  curves  (adjusted for the chosen
     interest  rate method)  applicable  two business  days prior to the Initial
     Maturity  Date to a B3 rated  industrial  borrower  for the period from the
     Initial  Maturity  Date through the latest  possible  Final  Maturity  Date
     (taking into account,  if applicable,  the latest Extension  Maturity Date)
     over (b) the corresponding Swap Rate for such period.

          "Extension Certificate" has the meaning specified in Section 2.14.

          "Extension  Period Interest Rate" means two business days prior to the
     Initial  Maturity Date, (a) either the British Bankers'  Association  (BBA)
     LIBOR rate (as shown on the Reuters page FRBD or comparable  pages) for the
     12-month  period or the Swap Rate for the  24-month  period or the 36-month
     period  commencing  from the  Initial  Maturity  Date as  follows:  (i) the
     36-month  period for  Advances  subject to an Initial  Maturity  Date on or
     prior to December 31, 1998, (ii) the 24-month  period for Advances  subject
     to an Initial  Maturity Date on or prior to December 31, 1999, or (iii) the
     12-month period for all other Advances, plus (b) the Applicable Spread.

          "Extension Request Notice" has the meaning set forth in Section 2.14.

          "Extension Maturity Date", if any, means the earlier of (a) either (i)
     the first  anniversary  of the Initial  Maturity Date, or (ii) if there has
     been an earlier applicable  Extension Maturity Date on or prior to December
     31, 1999, the first  anniversary of such prior Extension  Maturity Date, or
     (iii) if there has been an earlier applicable Extension Maturity Date after
     December 31, 1999 and on or before December 31, 2000, the first anniversary
     of such prior  Extension  Maturity Date and (b) the termination in whole of
     the Commitments pursuant to Section 6.01; provided,  that in no event shall
     an Extension Maturity Date be after December 31, 2001.

          "Initial Maturity Date" for any Advance means October 31, 1999.

          "Replacement Financing Arrangement" means a financing arrangement with
     any  Person who is not an  Affiliate  of the  Borrower  or the Agent or any
     Lender on  substantially  the terms which would apply hereunder  during the
     period from the then applicable  Final Maturity Date to the latest possible
     Extension   Maturity  Date,   provided  that  the  interest  rate  of  such
     Replacement  Financing  Arrangement  shall be no higher than the  Extension
     Period Interest Rate and, if no lesser interest rate is available, shall be
     the Extension Period Interest Rate.

          "Swap Rate" means the US-Dollar  denominated  interbank  interest rate
     swap  rates/LIBOR  offered  rates as shown on  Reuters  page ICAP and other
     comparable  brokerage  pages,  adjusted for the chosen interest rate method
     (annual/semi-annual compounding, etc.).

     3. The definition of "Change of Control Date" in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Change of Control  Date" means the date of  occurrence of a Change of
     Control;  provided,  that if such  occurrence  is on or prior to January 1,
     2001, the occurrence shall be deemed to have occurred on January 1, 2001.

     4. The  definition  of  "Eligible  Assignee"  in Section 1.01 of the Credit
<PAGE>   2

Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Eligible  Assignee"  means any Person approved by all of the Lenders;
     provided,  however,  that neither the Borrower  nor any  Subsidiary  of the
     Borrower shall qualify as an Eligible Assignee.

     5. The definition of "Final Maturity Date" set forth in Section 1.01 of the
Credit  Agreement  is  hereby  deleted  in its  entirety  and the  following  is
substituted in lieu thereof:

          "Final  Maturity  Date"  means the  earlier of (a) either the  Initial
     Maturity Date or, if  applicable,  the Extension  Maturity Date and (b) the
     termination in whole of the Commitments pursuant to Section 6.01.

     6. Section 2.03 of the Credit Agreement shall be amended as follows: in the
fifth line, "1/8 of 1%" is hereby deleted and "1/4 of 1%" is substituted in lieu
thereof.

     7.  Section  2.05(a)  of the  Credit  Agreement  is hereby  deleted  in its
entirety and the following is substituted in lieu thereof:

          "(a)  Interest on the  Advances.  From  September 1, 1998,  until such
     principal  amount shall be paid in full, the Borrower shall pay interest on
     the unpaid principal  amount of the Advances,  if any, which interest shall
     be payable  semiannually,  at an  interest  rate per annum equal to 8.468%;
     provided,  however,  that,  if the  Initial  Maturity  Date is on or  after
     January 1, 2001, as of the date occurring 45 Business Days after the Change
     of Control  Date,  the  interest  rate per annum shall be the higher of (x)
     8.468% and (y) the rate  determined  under clause (a) of the  definition of
     Extension Period Interest Rate, determined as of the Change of Control Date
     (rather  than the  Initial  Maturity  Date),  plus the  Applicable  Spread;
     provided,  that in the event of an extension of the then  applicable  Final
     Maturity  Date to the  Extension  Maturity  Date  pursuant to Section  2.14
     hereto,  from the then  applicable  Final  Maturity  Date to the  Extension
     Maturity  Date, the interest rate per annum shall be equal to the Extension
     Period Interest Rate."

     8. Section 2.06  (Interest  Rate  Determination  Upon Change of Control) is
hereby deleted in its entirety and the following is substituted in lieu thereof:
"SECTION 2.06. RESERVED."

     9. The  following  Section 2.14 is hereby added at the end of Article II of
the Credit Agreement:

          "SECTION 2.14.  Extension.  If the then applicable Final Maturity Date
     is a date on or before  December  31, 2000 and the Borrower may desire that
     the Lenders extend the then applicable Final Maturity Date to the Extension
     Maturity Date, then (a) the Borrower shall give written notice of said fact
     (the "Extension Request Notice") to the Agent and the Lenders no later than
     four (4) months before the Final  Maturity Date, (b) the Borrower shall use
     its best  efforts  to obtain  and enter into on or before the date which is
     two  months  prior  to the  Final  Maturity  Date a  Replacement  Financing
     Arrangement  and  (c)  if  the  Borrower  shall  not  have  entered  into a
     Replacement Financing Arrangement on or before the date which is two months
     prior to the Final  Maturity  Date, the Borrower shall deliver to the Agent
     and the Lenders a certificate of the Borrower (the "Extension Certificate")
     (x)  certifying  that  the  Borrower  has not  entered  into a  Replacement
     Financing  Arrangement,  but the Borrower used its best efforts to do so as
     required by clause (b) and setting forth such  evidence and back-up  detail
     as necessary to  demonstrate  the efforts made,  including a written letter
     from each bank from which a Replacement  Financing  Arrangement as required
     by clause (b) was requested,  indicating  that Borrower made such a request
     and that the request was denied, and (y) requesting that the Final Maturity
     Date be extended  to the  Extension  Maturity  Date.  For  purposes of this
     Section, the Borrower shall be deemed to have complied with the requirement
     to use its "best efforts" by requesting from and, if applicable, diligently
     negotiating a Replacement  Financing  Arrangement as required by clause (b)
     with each of three (3) commercial  banks that are nationally  recognized in
     the United States and each have total assets in excess of  $20,000,000,000.
     The Agent shall have the right to designate,  within ten (10) Business Days
     after  receipt  of an  Extension  Request  Notice,  one of the three  banks
     referred  to in the  preceding  sentence.  For  purposes  of this  Section,
     diligent  negotiation  shall mean  negotiation  in good  faith and  without
     denial or unreasonable delay of any reasonable request by any such bank for
     information in connection with its consideration of providing a Replacement
     Financing  Arrangement  to Borrower.  For the  avoidance of doubt,  nothing
     herein is  intended  to  prevent  Borrower  from  obtaining  a  Replacement
     Financing  Arrangement  on terms  equal to or better  than  those  provided
     hereunder.

          Following receipt of the Extension  Certificate,  the Agent and/or the
     Lenders  shall have the right  (without any  obligation to do so) to obtain
     for the Borrower a Replacement  Financing  Arrangement on terms equal to or
     better than those provided hereunder.

          If the Borrower has (a) delivered the Extension  Request Notice within
     the time period  specified  above,  (b) used its best efforts to obtain and
     enter into a Replacement  Financing Arrangement and delivered the Extension


<PAGE>   3

     Certificate within the time period specified above and (c) not unreasonably
     or in bad faith refused to enter into a Replacement  Financing  Arrangement
     (with terms equal to or better than those provided  hereunder) obtained for
     the Borrower by the Agent or any of the Lenders  pursuant to the  preceding
     paragraph,  the Final  Maturity  Date shall be  extended  to the  Extension
     Maturity Date and the interest rate shall be the Extension  Period Interest
     Rate.  The Agent shall provide the Borrower with a written  notice  setting
     forth the Extension Period Interest Rate.

          The Borrower  shall be  responsible  for the payment of any  customary
     commitment  fee and other fees in connection  with  obtaining a Replacement
     Financing Arrangement.

          For the  avoidance of doubt,  in no event shall an Extension  Maturity
     Date be requested by the Borrower  after  December 31, 2000 or be on a date
     after December 31, 2001."

     10. Section 5.02 of the Credit Agreement is deleted in its entirety and the
following is substituted in lieu thereof:

          "SECTION 5.02. Negative Covenants.  On and after September 1, 1998 and
     so long as any Advance  shall  remain  unpaid or any Lender  shall have any
     Commitment  hereunder,  the  Borrower  will not,  unless the Lenders  shall
     otherwise consent in writing:

               (a) Liens,  etc.  Create or suffer to exist, or permit any of its
          Subsidiaries to create or suffer to exist, any lien, security interest
          or other  charge or  encumbrance,  or any other  type of  preferential
          arrangement,  upon or with respect to any of its  properties,  whether
          now owned or  hereafter  acquired,  or  assign,  or permit  any of its
          Subsidiaries to assign,  any right to receive income,  in each case to
          secure any Debt of any Person, other than:

                    (i)  purchase   money  liens  or  purchase   money  security
               interests  upon  or in  any  property  acquired  or  held  by the
               Borrower or any Subsidiary in the ordinary  course of business to
               secure  the  purchase   price  of  such  property  or  to  secure
               indebtedness  incurred  solely for the purpose of  financing  the
               acquisition of such property;

                    (ii) liens or security  interests  existing on such property
               at the time of its  acquisition  (other  than  any  such  lien or
               security interest created in contemplation of such acquisition);

                    (iii) liens for taxes, assessments and government charges or
               levies  to the  extent  not  required  to be paid  under  Section
               5.01(b) hereof;

                    (iv)   liens   imposed  by  law,   such  as   materialmen's,
               mechanics',  carriers', workmen's and repairmen's liens and other
               similar liens arising in the ordinary course of business securing
               obligations  that are not  overdue  for a period  of more than 30
               days;

                    (v) pledges or deposits to secure obligations under workers'
               compensation  laws or similar  legislation or to secure public or
               statutory obligations;

                    (vi)  easements,  rights  of way and other  encumbrances  on
               title to real  property  that do not render title to the property
               encumbered  thereby  unmarketable or materially  adversely affect
               the use of such property for its present purposes; and

                    (vii) liens incurred or deposits made in the ordinary course
               of business to secure the performance of letters of credit, bids,
               tenders, sales contracts,  leases, surety, appeal and performance
               bonds and other  similar  obligations  not incurred in connection
               with the borrowing of money;

          provided,  that the  aggregate  principal  amount of the  Debt,  other
          indebtedness,  taxes,  assessments,  governmental charges or levies or
          other obligations  secured by the liens or security interests referred
          to in clauses  (i) through  (vii) of this  Section  5.02(a)  shall not
          exceed $45,000,000 in the aggregate at any time outstanding.

               (b)  Accounting  Changes.  Make or  permit,  or permit any of its
          Subsidiaries to make or permit,  any change in accounting  policies or
          reporting   practices,   except  as  allowed  by  generally   accepted
          accounting principles."

     11. Unless otherwise  provided herein,  any term in initial capital letters
or all  capital  letters  used as a defined  term but not  defined in this First
Amendment shall have the meaning set forth in the Credit Agreement.

     12. Except as  modified  herein,  all terms and  conditions  of the Credit
Agreement shall remain in full force and effect.

     13. This First  Amendment shall be governed by, and construed in accordance
with, the laws of the State of New York.
<PAGE>   4


     14. This First Amendment may be executed in any number of counterparts  and
by  different  parties  hereto in separate  counterparts,  each of which when so
executed  shall be deemed an  original  and all of which  taken  together  shall
constitute one and the same agreement. Delivery of any executed counterpart of a
signature  page to this First  Amendment  by  telecopier  shall be  effective as
delivery of a manually executed counterpart of this First Amendment.

     IN WITNESS WHEREOF,  the parties hereto have caused this First Amendment to
be executed by their duly authorized representatives effective as of the day and
year first above written.

MEMC ELECTRONIC MATERIALS, INC., as Borrower


By: /s/ Kenneth L. Young
    _________________________________
      Name:  Kenneth L. Young
      Title: Treasurer


HULS CORPORATION, as Agent


By: /s/ H. J. Biangardi
    _________________________________
      Name:  H. J. Biangardi
      Title: President and CEO


By: /s/ John Schaffner
    _________________________________
      Name:  John Schaffner for Mitchell Solomowitz
      Title: Treasurer


HULS CORPORATION, as the sole Lender


By: /s/ H. J. Biangardi
    _________________________________
      Name:  H. J. Biangardi
      Title: President and CEO


By: /s/ John Schaffner
    _________________________________
      Name:  John Schaffner for Mitchell Solomowitz
      Title: Treasurer

<PAGE>   1
                                                                EXHIBIT 10-FF(1)
                       FIRST AMENDMENT TO CREDIT AGREEMENT

     This First Amendment to Credit Agreement  ("First  Amendment") is effective
as of  September 1, 1998 between  MEMC  ELECTRONIC  MATERIALS,  INC., a Delaware
corporation  ("Borrower"),  as the  Borrower,  and Huls  Corporation,  a company
formed under the laws of the State of  Delaware,  U.S.A.  ("Huls"),  as the sole
Lender and as Agent.

                                    Recitals

     WHEREAS, Borrower and Huls entered into a Credit Agreement dated as of July
10, 1995 (the "Credit Agreement")  pursuant to which Huls agreed to extend up to
US$40,000,000 of credit to Borrower on a term basis;

     WHEREAS,  Borrower,  Huls and  certain  affiliates  of Huls have  agreed to
extend additional  credit to Borrower and to restructure the existing  financing
provided by Huls and its affiliates to Borrower, and

     WHEREAS, as part of such restructuring,  Borrower and Huls desire to change
the interest rate payable by Borrower to Huls under the Credit Agreement.

     NOW THEREFORE,  in consideration  of the foregoing  premises and the mutual
covenants and conditions hereinafter set forth, the parties agree as follows:

     1. The  definitions  of  "Applicable  Margin",  "Base  Rate",  "Performance
Level",  "Performance Level I", "Performance Level II",  "Performance Level III"
and  "Performance  Level IV" in Section 1.01 of the Credit  Agreement are hereby
deleted in their entirety.

     2. The following  definitions  are hereby  inserted in proper  alphabetical
order into Section 1.01 of the Credit Agreement:

          "Applicable  Spread" means a percentage  per annum equal to the excess
     of (a) the Bloomberg  fair market  sector  curves  (adjusted for the chosen
     interest  rate method)  applicable  two business  days prior to the Initial
     Maturity  Date to a B3 rated  industrial  borrower  for the period from the
     Initial  Maturity  Date through the latest  possible  Final  Maturity  Date
     (taking into account,  if applicable,  the latest Extension  Maturity Date)
     over (b) the corresponding Swap Rate for such period.

          "Extension Certificate" has the meaning specified in Section 2.14.

          "Extension  Period Interest Rate" means two business days prior to the
     Initial  Maturity Date, (a) either the British Bankers'  Association  (BBA)
     LIBOR rate (as shown on the Reuters page FRBD or comparable  pages) for the
     12-month  period or the Swap Rate for the  24-month  period or the 36-month
     period  commencing  from the  Initial  Maturity  Date as  follows:  (i) the
     36-month  period for  Advances  subject to an Initial  Maturity  Date on or
     prior to December 31, 1998, (ii) the 24-month  period for Advances  subject
     to an Initial  Maturity Date on or prior to December 31, 1999, or (iii) the
     12-month period for all other Advances, plus (b) the Applicable Spread.

          "Extension Request Notice" has the meaning set forth in Section 2.14.

          "Extension Maturity Date", if any, means the earlier of (a) either (i)
     the first  anniversary  of the Initial  Maturity Date, or (ii) if there has
     been an earlier applicable  Extension Maturity Date on or prior to December
     31, 1999, the first  anniversary of such prior Extension  Maturity Date, or
     (iii) if there has been an earlier applicable Extension Maturity Date after
     December 31, 1999 and on or before December 31, 2000, the first anniversary
     of such prior  Extension  Maturity Date and (b) the termination in whole of
     the Commitments pursuant to Section 6.01; provided,  that in no event shall
     an Extension Maturity Date be after December 31, 2001.

          "Initial Maturity Date" for any Advance means December 15, 2003.

          "Replacement Financing Arrangement" means a financing arrangement with
     any  Person who is not an  Affiliate  of the  Borrower  or the Agent or any
     Lender on  substantially  the terms which would apply hereunder  during the
     period from the then applicable  Final Maturity Date to the latest possible
     Extension   Maturity  Date,   provided  that  the  interest  rate  of  such
     Replacement  Financing  Arrangement  shall be no higher than the  Extension
     Period Interest Rate and, if no lesser interest rate is available, shall be
     the Extension Period Interest Rate.

          "Swap Rate" means the US-Dollar  denominated  interbank  interest rate
     swap  rates/LIBOR  offered  rates as shown on  Reuters  page ICAP and other
     comparable  brokerage  pages,  adjusted for the chosen interest rate method
     (annual/semi-annual compounding, etc.).

     3. The definition of "Change of Control Date" in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Change of Control  Date" means the date of  occurrence of a Change of
     Control;  provided,  that if such  occurrence  is on or prior to January 1,
     2001, the occurrence shall be deemed to have occurred on January 1, 2001.

     4. The  definition of "Eligible  Assignee"  in Section 1.01 of the Credit

<PAGE>   2

Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Eligible  Assignee"  means any Person approved by all of the Lenders;
     provided,  however,  that neither the Borrower  nor any  Subsidiary  of the
     Borrower shall qualify as an Eligible Assignee.

     5. The definition of "Final Maturity Date" set forth in Section 1.01 of the
Credit  Agreement  is  hereby  deleted  in its  entirety  and the  following  is
substituted in lieu thereof:

          "Final  Maturity  Date"  means the  earlier of (a) either the  Initial
     Maturity Date or, if  applicable,  the Extension  Maturity Date and (b) the
     termination in whole of the Commitments pursuant to Section 6.01.

     6. Section 2.03 of the Credit Agreement shall be amended as follows: in the
fifth line, "1/8 of 1%" is hereby deleted and "1/4 of 1%" is substituted in lieu
thereof.

     7.  Section  2.05(a)  of the  Credit  Agreement  is hereby  deleted  in its
entirety and the following is substituted in lieu thereof:

          "(a)  Interest on the  Advances.  From  September 1, 1998,  until such
     principal  amount shall be paid in full, the Borrower shall pay interest on
     the unpaid principal  amount of the Advances,  if any, which interest shall
     be payable  semiannually,  at an  interest  rate per annum equal to 8.662%;
     provided,  however,  that,  if the  Initial  Maturity  Date is on or  after
     January 1, 2001, as of the date occurring 45 Business Days after the Change
     of Control  Date,  the  interest  rate per annum shall be the higher of (x)
     8.662% and (y) the rate  determined  under clause (a) of the  definition of
     Extension Period Interest Rate, determined as of the Change of Control Date
     (rather  than the  Initial  Maturity  Date),  plus the  Applicable  Spread;
     provided,  that in the event of an extension of the then  applicable  Final
     Maturity  Date to the  Extension  Maturity  Date  pursuant to Section  2.14
     hereto,  from the then  applicable  Final  Maturity  Date to the  Extension
     Maturity  Date, the interest rate per annum shall be equal to the Extension
     Period Interest Rate."

     8. Section 2.06  (Interest  Rate  Determination  Upon Change of Control) is
hereby deleted in its entirety and the following is substituted in lieu thereof:
"SECTION 2.06. RESERVED."

     9. The  following  Section 2.14 is hereby added at the end of Article II of
the Credit Agreement:

               "SECTION 2.14.  Extension.  If the then applicable Final Maturity
          Date is a date on or before  December  31, 2000 and the  Borrower  may
          desire that the Lenders extend the then applicable Final Maturity Date
          to the  Extension  Maturity  Date,  then (a) the  Borrower  shall give
          written notice of said fact (the  "Extension  Request  Notice") to the
          Agent and the  Lenders no later than four (4) months  before the Final
          Maturity  Date,  (b) the Borrower shall use its best efforts to obtain
          and enter into on or before the date which is two months  prior to the
          Final Maturity Date a Replacement Financing Arrangement and (c) if the
          Borrower   shall  not  have  entered  into  a  Replacement   Financing
          Arrangement  on or before the date  which is two  months  prior to the
          Final  Maturity  Date, the Borrower shall deliver to the Agent and the
          Lenders a certificate  of the Borrower (the  "Extension  Certificate")
          (x)  certifying  that the Borrower has not entered into a  Replacement
          Financing Arrangement, but the Borrower used its best efforts to do so
          as required by clause (b) and setting  forth such evidence and back-up
          detail as  necessary  to  demonstrate  the efforts  made,  including a
          written  letter  from  each bank from  which a  Replacement  Financing
          Arrangement as required by clause (b) was requested,  indicating  that
          Borrower made such a request and that the request was denied,  and (y)
          requesting  that the Final  Maturity Date be extended to the Extension
          Maturity  Date.  For purposes of this Section,  the Borrower  shall be
          deemed to have complied with the requirement to use its "best efforts"
          by  requesting  from and,  if  applicable,  diligently  negotiating  a
          Replacement  Financing Arrangement as required by clause (b) with each
          of three (3) commercial  banks that are  nationally  recognized in the
          United States and each have total assets in excess of $20,000,000,000.
          The Agent shall have the right to designate,  within ten (10) Business
          Days after receipt of an Extension  Request  Notice,  one of the three
          banks  referred to in the  preceding  sentence.  For  purposes of this
          Section, diligent negotiation shall mean negotiation in good faith and
          without denial or unreasonable  delay of any reasonable request by any
          such bank for  information  in connection  with its  consideration  of
          providing a Replacement  Financing  Arrangement  to Borrower.  For the
          avoidance  of doubt,  nothing  herein is intended to prevent  Borrower
          from obtaining a Replacement  Financing  Arrangement on terms equal to
          or better than those provided hereunder.

               Following receipt of the Extension Certificate,  the Agent and/or
          the Lenders shall have the right  (without any obligation to do so) to
          obtain for the Borrower a Replacement  Financing  Arrangement on terms
          equal to or better than those provided hereunder.

               If the Borrower has (a) delivered the  Extension  Request  Notice
<PAGE>   3
         

          within the time period  specified  above, (b) used its best efforts to
          obtain  and  enter  into  a  Replacement   Financing  Arrangement  and
          delivered the Extension  Certificate  within the time period specified
          above and (c) not unreasonably or in bad faith refused to enter into a
          Replacement  Financing Arrangement (with terms equal to or better than
          those  provided  hereunder)  obtained for the Borrower by the Agent or
          any of the Lenders  pursuant  to the  preceding  paragraph,  the Final
          Maturity Date shall be extended to the Extension Maturity Date and the
          interest rate shall be the Extension  Period  Interest Rate. The Agent
          shall  provide the Borrower  with a written  notice  setting forth the
          Extension Period Interest Rate.

               The  Borrower  shall  be  responsible  for  the  payment  of  any
          customary commitment fee and other fees in connection with obtaining a
          Replacement Financing Arrangement.

               For the  avoidance  of  doubt,  in no event  shall  an  Extension
          Maturity Date be requested by the Borrower  after December 31, 2000 or
          be on a date after December 31, 2001."

     10. Section 5.02 of the Credit Agreement is deleted in its entirety and the
following is substituted in lieu thereof:

          "SECTION 5.02. Negative Covenants.  On and after September 1, 1998 and
     so long as any Advance  shall  remain  unpaid or any Lender  shall have any
     Commitment  hereunder,  the  Borrower  will not,  unless the Lenders  shall
     otherwise consent in writing:

               (a) Liens,  etc.  Create or suffer to exist, or permit any of its
          Subsidiaries to create or suffer to exist, any lien, security interest
          or other  charge or  encumbrance,  or any other  type of  preferential
          arrangement,  upon or with respect to any of its  properties,  whether
          now owned or  hereafter  acquired,  or  assign,  or permit  any of its
          Subsidiaries to assign,  any right to receive income,  in each case to
          secure any Debt of any Person, other than:

                    (i)  purchase   money  liens  or  purchase   money  security
               interests  upon  or in  any  property  acquired  or  held  by the
               Borrower or any Subsidiary in the ordinary  course of business to
               secure  the  purchase   price  of  such  property  or  to  secure
               indebtedness  incurred  solely for the purpose of  financing  the
               acquisition of such property;

                    (ii) liens or security  interests  existing on such property
               at the time of its  acquisition  (other  than  any  such  lien or
               security interest created in contemplation of such acquisition);

                    (iii) liens for taxes, assessments and government charges or
               levies  to the  extent  not  required  to be paid  under  Section
               5.01(b) hereof;

                    (iv)   liens   imposed  by  law,   such  as   materialmen's,
               mechanics',  carriers', workmen's and repairmen's liens and other
               similar liens arising in the ordinary course of business securing
               obligations  that are not  overdue  for a period  of more than 30
               days;

                    (v) pledges or deposits to secure obligations under workers'
               compensation  laws or similar  legislation or to secure public or
               statutory obligations;

                    (vi)  easements,  rights  of way and other  encumbrances  on
               title to real  property  that do not render title to the property
               encumbered  thereby  unmarketable or materially  adversely affect
               the use of such property for its present purposes; and

                    (vii) liens incurred or deposits made in the ordinary course
               of business to secure the performance of letters of credit, bids,
               tenders, sales contracts,  leases, surety, appeal and performance
               bonds and other  similar  obligations  not incurred in connection
               with the borrowing of money;

          provided,  that the  aggregate  principal  amount of the  Debt,  other
          indebtedness,  taxes,  assessments,  governmental charges or levies or
          other obligations  secured by the liens or security interests referred
          to in clauses  (i) through  (vii) of this  Section  5.02(a)  shall not
          exceed $45,000,000 in the aggregate at any time outstanding.

               (b)  Accounting  Changes.  Make or  permit,  or permit any of its
          Subsidiaries to make or permit,  any change in accounting  policies or
          reporting   practices,   except  as  allowed  by  generally   accepted
          accounting principles."

     11. Unless otherwise  provided herein,  any term in initial capital letters
or all  capital  letters  used as a defined  term but not  defined in this First
Amendment shall have the meaning set forth in the Credit Agreement.

     12.  Except as  modified  herein,  all terms and  conditions  of the Credit
Agreement shall remain in full force and effect.

<PAGE>   4


     13. This First  Amendment shall be governed by, and construed in accordance
with, the laws of the State of New York.

     14. This First Amendment may be executed in any number of counterparts  and
by  different  parties  hereto in separate  counterparts,  each of which when so
executed  shall be deemed an  original  and all of which  taken  together  shall
constitute one and the same agreement. Delivery of any executed counterpart of a
signature  page to this First  Amendment  by  telecopier  shall be  effective as
delivery of a manually executed counterpart of this First Amendment.

     IN WITNESS WHEREOF,  the parties hereto have caused this First Amendment to
be executed by their duly authorized representatives effective as of the day and
year first above written.

MEMC ELECTRONIC MATERIALS, INC., as Borrower


By: /s/ Kenneth L. Young
    ---------------------------------
      Name:  Kenneth L. Young
      Title: Treasurer


HULS CORPORATION, as Agent


By: /s/ H. J. Biangardi
    ---------------------------------
      Name:  H. J. Biangardi
      Title: President and CEO


By: /s/ John Schaffner
    ---------------------------------
      Name:  John Schaffner for Mitchell Solomowitz
      Title: Treasurer


HULS CORPORATION, as the sole Lender


By: /s/ H. J. Biangardi
    ---------------------------------
      Name:  H. J. Biangardi
      Title: President and CEO


By: /s/ John Schaffner
    ---------------------------------
      Name:  John Schaffner for Mitchell Solomowitz
      Title: Treasurer

<PAGE>   1
                                                                EXHIBIT 10-GG(2)
                      SECOND AMENDMENT TO CREDIT AGREEMENT

     This Second Amendment to Credit Agreement ("Second Amendment") is effective
as of  September 1, 1998 between  MEMC  ELECTRONIC  MATERIALS,  INC., a Delaware
corporation  ("Borrower"),  as the Borrower, and HULS AG, a company formed under
the laws of the Federal Republic of Germany ("Huls"),  as the sole Lender and as
Agent.

                                    Recitals

     WHEREAS, Borrower and Huls entered into a Credit Agreement dated as of July
10, 1995,  as amended by first  amendment  dated as of July 1, 1998 (the "Credit
Agreement")  pursuant  to which  Huls  agreed to extend up to  US$25,000,000  of
credit to Borrower on a term basis;

     WHEREAS,  Borrower,  Huls and  certain  affiliates  of Huls have  agreed to
extend additional  credit to Borrower and to restructure the existing  financing
provided by Huls and its affiliates to Borrower, and

     WHEREAS, as part of such restructuring,  Borrower and Huls desire to change
the interest rate payable by Borrower to Huls under the Credit Agreement.

     NOW THEREFORE,  in consideration  of the foregoing  premises and the mutual
covenants and conditions hereinafter set forth, the parties agree as follows:

     1. The  definitions  of  "Applicable  Margin",  "Base  Rate",  "Performance
Level",  "Performance Level I", "Performance Level II",  "Performance Level III"
and  "Performance  Level IV" in Section 1.01 of the Credit  Agreement are hereby
deleted in their entirety.

     2. The following  definitions  are hereby  inserted in proper  alphabetical
order into Section 1.01 of the Credit Agreement:

          "Applicable  Spread" means a percentage  per annum equal to the excess
     of (a) the Bloomberg  fair market  sector  curves  (adjusted for the chosen
     interest  rate method)  applicable  two business  days prior to the Initial
     Maturity  Date to a B3 rated  industrial  borrower  for the period from the
     Initial  Maturity  Date through the latest  possible  Final  Maturity  Date
     (taking into account,  if applicable,  the latest Extension  Maturity Date)
     over (b) the corresponding Swap Rate for such period.

          "Extension Certificate" has the meaning specified in Section 2.15.

          "Extension Maturity Date", if any, means the earlier of (a) either (i)
     the first  anniversary  of the Initial  Maturity Date, or (ii) if there has
     been an earlier applicable  Extension Maturity Date on or prior to December
     31, 1999, the first  anniversary of such prior Extension  Maturity Date, or
     (iii) if there has been an earlier applicable Extension Maturity Date after
     December 31, 1999 and on or before December 31, 2000, the first anniversary
     of such prior  Extension  Maturity Date and (b) the termination in whole of
     the Commitments pursuant to Section 2.04 or Section 6.01; provided, that in
     no event shall an Extension Maturity Date be after December 31, 2001.

          "Extension  Period Interest Rate" means two business days prior to the
     Initial  Maturity Date, (a) either the British Bankers'  Association  (BBA)
     LIBOR rate (as shown on the Reuters page FRBD or comparable  pages) for the
     12-month  period or the Swap Rate for the  24-month  period or the 36-month
     period  commencing  from the  Initial  Maturity  Date as  follows:  (i) the
     36-month  period for  Advances  subject to an Initial  Maturity  Date on or
     prior to December 31, 1998, (ii) the 24-month  period for Advances  subject
     to an Initial  Maturity Date on or prior to December 31, 1999, or (iii) the
     12-month period for all other Advances, plus (b) the Applicable Spread.

          "Extension Request Notice" has the meaning set forth in Section 2.15.

          "Initial Maturity Date" for any Advance means September 30, 1998.

          "Replacement Financing Arrangement" means a financing arrangement with
     any  Person who is not an  Affiliate  of the  Borrower  or the Agent or any
     Lender on  substantially  the terms which would apply hereunder  during the
     period from the then applicable  Final Maturity Date to the latest possible
     Extension   Maturity  Date,   provided  that  the  interest  rate  of  such
     Replacement  Financing  Arrangement  shall be no higher than the  Extension
     Period Interest Rate and, if no lesser interest rate is available, shall be
     the Extension Period Interest Rate.

          "Swap Rate" means the US-Dollar  denominated  interbank  interest rate
     swap  rates/LIBOR  offered  rates as shown on  Reuters  page ICAP and other
     comparable  brokerage  pages,  adjusted for the chosen interest rate method
     (annual/semi-annual compounding, etc.).

     3. The definition of "Change of Control Date" in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Change of Control  Date" means the date of  occurrence of a Change of
     Control;  provided,  that if such  occurrence  is on or prior to January 1,
     2001, the occurrence shall be deemed to have occurred on January 1, 2001.


<PAGE>   2

     4. The  definition  of  "Eligible  Assignee"  in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Eligible  Assignee"  means any Person approved by all of the Lenders;
     provided,  however,  that neither the Borrower  nor any  Subsidiary  of the
     Borrower shall qualify as an Eligible Assignee.

     5. The definition of "Final Maturity Date" set forth in Section 1.01 of the
Credit  Agreement  is  hereby  deleted  in its  entirety  and the  following  is
substituted in lieu thereof:

          "Final  Maturity  Date"  means the  earlier of (a) either the  Initial
     Maturity Date or, if  applicable,  the Extension  Maturity Date and (b) the
     termination in whole of the Commitments pursuant to Section 2.04 or Section
     6.01.

     6. Section 2.03 of the Credit Agreement shall be amended as follows: in the
fifth line, "1/8 of 1%" is hereby deleted and "1/4 of 1%" is substituted in lieu
thereof.

     7.  Section  2.06(a)  of the  Credit  Agreement  is hereby  deleted  in its
entirety and the following is substituted in lieu thereof:

          "(a)  Interest on the  Advances.  From  September 1, 1998,  until such
     principal  amount shall be paid in full, the Borrower shall pay interest on
     the unpaid principal  amount of the Advances,  if any, which interest shall
     be payable  semiannually,  at an  interest  rate per annum equal to 7.120%;
     provided,  however,  that,  if the  Initial  Maturity  Date is on or  after
     January 1, 2001, as of the date occurring 45 Business Days after the Change
     of Control  Date,  the  interest  rate per annum shall be the higher of (x)
     7.120% and (y) the rate  determined  under clause (a) of the  definition of
     Extension Period Interest Rate, determined as of the Change of Control Date
     (rather  than the  Initial  Maturity  Date),  plus the  Applicable  Spread;
     provided,  that in the event of an extension of the then  applicable  Final
     Maturity  Date to the  Extension  Maturity  Date  pursuant to Section  2.15
     hereto,  from the then  applicable  Final  Maturity  Date to the  Extension
     Maturity  Date, the interest rate per annum shall be equal to the Extension
     Period Interest Rate."

     8. Section 2.07  (Interest  Rate  Determination  Upon Change of Control) is
hereby deleted in its entirety and the following is substituted in lieu thereof:
"SECTION 2.07. RESERVED."

     9. The  following  Section 2.15 is hereby added at the end of Article II of
the Credit Agreement:

          "SECTION 2.15.  Extension.  If the then applicable Final Maturity Date
     is a date on or before  December  31, 2000 and the Borrower may desire that
     the Lenders extend the then applicable Final Maturity Date to the Extension
     Maturity Date, then (a) the Borrower shall give written notice of said fact
     (the "Extension Request Notice") to the Agent and the Lenders no later than
     four (4) months before the Final  Maturity Date, (b) the Borrower shall use
     its best  efforts  to obtain  and enter into on or before the date which is
     two  months  prior  to the  Final  Maturity  Date a  Replacement  Financing
     Arrangement  and  (c)  if  the  Borrower  shall  not  have  entered  into a
     Replacement Financing Arrangement on or before the date which is two months
     prior to the Final  Maturity  Date, the Borrower shall deliver to the Agent
     and the Lenders a certificate of the Borrower (the "Extension Certificate")
     (x)  certifying  that  the  Borrower  has not  entered  into a  Replacement
     Financing  Arrangement,  but the Borrower used its best efforts to do so as
     required by clause (b) and setting forth such  evidence and back-up  detail
     as necessary to  demonstrate  the efforts made,  including a written letter
     from each bank from which a Replacement  Financing  Arrangement as required
     by clause (b) was requested,  indicating  that Borrower made such a request
     and that the request was denied, and (y) requesting that the Final Maturity
     Date be extended  to the  Extension  Maturity  Date.  For  purposes of this
     Section, the Borrower shall be deemed to have complied with the requirement
     to use its "best efforts" by requesting from and, if applicable, diligently
     negotiating a Replacement  Financing  Arrangement as required by clause (b)
     with each of three (3) commercial  banks that are nationally  recognized in
     the United States and each have total assets in excess of  $20,000,000,000.
     The Agent shall have the right to designate,  within ten (10) Business Days
     after  receipt  of an  Extension  Request  Notice,  one of the three  banks
     referred  to in the  preceding  sentence.  For  purposes  of this  Section,
     diligent  negotiation  shall mean  negotiation  in good  faith and  without
     denial or unreasonable delay of any reasonable request by any such bank for
     information in connection with its consideration of providing a Replacement
     Financing  Arrangement  to Borrower.  For the  avoidance of doubt,  nothing
     herein is  intended  to  prevent  Borrower  from  obtaining  a  Replacement
     Financing  Arrangement  on terms  equal to or better  than  those  provided
     hereunder.

          Following receipt of the Extension  Certificate,  the Agent and/or the
     Lenders  shall have the right  (without any  obligation to do so) to obtain
     for the Borrower a Replacement  Financing  Arrangement on terms equal to or
     better than those provided hereunder.

          If the Borrower has (a) delivered the Extension  Request Notice within

<PAGE>   3

     the time period  specified  above,  (b) used its best efforts to obtain and
     enter into a Replacement  Financing Arrangement and delivered the Extension
     Certificate within the time period specified above and (c) not unreasonably
     or in bad faith refused to enter into a Replacement  Financing  Arrangement
     (with terms equal to or better than those provided  hereunder) obtained for
     the Borrower by the Agent or any of the Lenders  pursuant to the  preceding
     paragraph,  the Final  Maturity  Date shall be  extended  to the  Extension
     Maturity Date and the interest rate shall be the Extension  Period Interest
     Rate.  The Agent shall provide the Borrower with a written  notice  setting
     forth the Extension Period Interest Rate.

          The Borrower  shall be  responsible  for the payment of any  customary
     commitment  fee and other fees in connection  with  obtaining a Replacement
     Financing Arrangement.

          For the  avoidance of doubt,  in no event shall an Extension  Maturity
     Date be requested by the Borrower  after  December 31, 2000 or be on a date
     after December 31, 2001."

     10. Section 5.02 of the Credit Agreement is deleted in its entirety and the
following is substituted in lieu thereof:

          "SECTION 5.02. Negative Covenants.  On and after September 1, 1998 and
     so long as any Advance  shall  remain  unpaid or any Lender  shall have any
     Commitment  hereunder,  the  Borrower  will not,  unless the Lenders  shall
     otherwise consent in writing:

               (a) Liens,  etc.  Create or suffer to exist, or permit any of its
          Subsidiaries to create or suffer to exist, any lien, security interest
          or other  charge or  encumbrance,  or any other  type of  preferential
          arrangement,  upon or with respect to any of its  properties,  whether
          now owned or  hereafter  acquired,  or  assign,  or permit  any of its
          Subsidiaries to assign,  any right to receive income,  in each case to
          secure any Debt of any Person, other than:

                    (i)  purchase   money  liens  or  purchase   money  security
               interests  upon  or in  any  property  acquired  or  held  by the
               Borrower or any Subsidiary in the ordinary  course of business to
               secure  the  purchase   price  of  such  property  or  to  secure
               indebtedness  incurred  solely for the purpose of  financing  the
               acquisition of such property;

                    (ii) liens or security  interests  existing on such property
               at the time of its  acquisition  (other  than  any  such  lien or
               security interest created in contemplation of such acquisition);

                    (iii) liens for taxes, assessments and government charges or
               levies  to the  extent  not  required  to be paid  under  Section
               5.01(b) hereof;

                    (iv)   liens   imposed  by  law,   such  as   materialmen's,
               mechanics',  carriers', workmen's and repairmen's liens and other
               similar liens arising in the ordinary course of business securing
               obligations  that are not  overdue  for a period  of more than 30
               days;

                    (v) pledges or deposits to secure obligations under workers'
               compensation  laws or similar  legislation or to secure public or
               statutory obligations;

                    (vi)  easements,  rights  of way and other  encumbrances  on
               title to real  property  that do not render title to the property
               encumbered  thereby  unmarketable or materially  adversely affect
               the use of such property for its present purposes; and

                    (vii) liens incurred or deposits made in the ordinary course
               of business to secure the performance of letters of credit, bids,
               tenders, sales contracts,  leases, surety, appeal and performance
               bonds and other  similar  obligations  not incurred in connection
               with the borrowing of money;

          provided,  that the  aggregate  principal  amount of the  Debt,  other
          indebtedness,  taxes,  assessments,  governmental charges or levies or
          other obligations  secured by the liens or security interests referred
          to in clauses  (i) through  (vii) of this  Section  5.02(a)  shall not
          exceed $45,000,000 in the aggregate at any time outstanding.

               (b)  Accounting  Changes.  Make or  permit,  or permit any of its
          Subsidiaries to make or permit,  any change in accounting  policies or
          reporting   practices,   except  as  allowed  by  generally   accepted
          accounting principles."

     11. Unless otherwise  provided herein,  any term in initial capital letters
or all  capital  letters  used as a defined  term but not defined in this Second
Amendment shall have the meaning set forth in the Credit Agreement.

     12.  Except as  modified  herein,  all terms and  conditions  of the Credit
Agreement shall remain in full force and effect.


<PAGE>   4

    13. This Second Amendment shall be governed by, and construed in accordance
with, the laws of the State of New York.

     14. This Second Amendment may be executed in any number of counterparts and
by  different  parties  hereto in separate  counterparts,  each of which when so
executed  shall be deemed an  original  and all of which  taken  together  shall
constitute one and the same agreement. Delivery of any executed counterpart of a
signature  page to this Second  Amendment  by  telecopier  shall be effective as
delivery of a manually executed counterpart of this Second Amendment.

     IN WITNESS WHEREOF, the parties hereto have caused this Second Amendment to
be executed by their duly authorized representatives effective as of the day and
year first above written.

MEMC ELECTRONIC MATERIALS, INC., as Borrower


By: /s/ Kenneth L. Young
    ---------------------------------
      Name:  Kenneth L. Young
      Title: Treasurer


HULS AG, as Agent


By: /s/ Georg Muller
    ---------------------------------
      Name:  Georg Muller
      Title:


By: /s/ Jurgen Buchsteiner
    ---------------------------------
      Name:  Jurgen Buchsteiner
      Title:


HULS AG, as the sole Lender


By: /s/ Georg Muller
    ---------------------------------
      Name:  Georg Muller
      Title:


By: /s/ Jurgen Buchsteiner
    ---------------------------------
      Name:  Jurgen Buchsteiner
      Title:

<PAGE>   1
                                                            EXHIBIT 10-HH(1)


                       FIRST AMENDMENT TO CREDIT AGREEMENT

     This First Amendment to Credit Agreement  ("First  Amendment") is effective
as of  September 1, 1998 between  MEMC  ELECTRONIC  MATERIALS,  INC., a Delaware
corporation  ("Borrower"),  as the  Borrower,  and Huls  Corporation,  a company
formed under the laws of the State of  Delaware,  U.S.A.  ("Huls"),  as the sole
Lender and as Agent.

                                    Recitals

     WHEREAS,  Borrower and Huls AG, a company formed under the laws of Germany,
entered into a Credit Agreement dated as of July 10, 1995, which was assigned to
Huls on November 4, 1996 (the "Credit Agreement"), pursuant to which Huls agreed
to extend up to US$50,000,000 of credit to Borrower on a term basis;

     WHEREAS,  Borrower,  Huls and  certain  affiliates  of Huls have  agreed to
extend additional  credit to Borrower and to restructure the existing  financing
provided by Huls and its affiliates to Borrower, and

     WHEREAS, as part of such restructuring,  Borrower and Huls desire to change
the interest rate payable by Borrower to Huls under the Credit Agreement.

     NOW THEREFORE,  in consideration  of the foregoing  premises and the mutual
covenants and conditions hereinafter set forth, the parties agree as follows:

     1. The  definitions  of  "Applicable  Margin",  "Base  Rate",  "Performance
Level",  "Performance Level I", "Performance Level II",  "Performance Level III"
and  "Performance  Level IV" in Section 1.01 of the Credit  Agreement are hereby
deleted in their entirety.

     2. The following  definitions  are hereby  inserted in proper  alphabetical
order into Section 1.01 of the Credit Agreement:

          "Applicable  Spread" means a percentage  per annum equal to the excess
     of (a) the Bloomberg  fair market  sector  curves  (adjusted for the chosen
     interest  rate method)  applicable  two business  days prior to the Initial
     Maturity  Date to a B3 rated  industrial  borrower  for the period from the
     Initial  Maturity  Date through the latest  possible  Final  Maturity  Date
     (taking into account,  if applicable,  the latest Extension  Maturity Date)
     over (b) the corresponding Swap Rate for such period.

          "Extension Certificate" has the meaning specified in Section 2.15.

          "Extension  Period Interest Rate" means two business days prior to the
     Initial  Maturity Date, (a) either the British Bankers'  Association  (BBA)
     LIBOR rate (as shown on the Reuters page FRBD or comparable  pages) for the
     12-month  period or the Swap Rate for the  24-month  period or the 36-month
     period  commencing  from the  Initial  Maturity  Date as  follows:  (i) the
     36-month  period for  Advances  subject to an Initial  Maturity  Date on or
     prior to December 31, 1998, (ii) the 24-month  period for Advances  subject
     to an Initial  Maturity Date on or prior to December 31, 1999, or (iii) the
     12-month period for all other Advances, plus (b) the Applicable Spread.

          "Extension Request Notice" has the meaning set forth in Section 2.15.

          "Extension Maturity Date", if any, means the earlier of (a) either (i)
     the first  anniversary  of the Initial  Maturity Date, or (ii) if there has
     been an earlier applicable  Extension Maturity Date on or prior to December
     31, 1999, the first  anniversary of such prior Extension  Maturity Date, or
     (iii) if there has been an earlier applicable Extension Maturity Date after
     December 31, 1999 and on or before December 31, 2000, the first anniversary
     of such prior  Extension  Maturity Date and (b) the termination in whole of
     the Commitments pursuant to Section 2.04 or Section 6.01; provided, that in
     no event shall an Extension Maturity Date be after December 31, 2001.

          "Initial Maturity Date" for any Advance means December 31, 2001.

          "Replacement Financing Arrangement" means a financing arrangement with
     any  Person who is not an  Affiliate  of the  Borrower  or the Agent or any
     Lender on  substantially  the terms which would apply hereunder  during the
     period from the then applicable  Final Maturity Date to the latest possible
     Extension   Maturity  Date,   provided  that  the  interest  rate  of  such
     Replacement  Financing  Arrangement  shall be no higher than the  Extension
     Period Interest Rate and, if no lesser interest rate is available, shall be
     the Extension Period Interest Rate.

          "Swap Rate" means the US-Dollar  denominated  interbank  interest rate
     swap  rates/LIBOR  offered  rates as shown on  Reuters  page ICAP and other
     comparable  brokerage  pages,  adjusted for the chosen interest rate method
     (annual/semi-annual compounding, etc.).

     3. The definition of "Change of Control Date" in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Change of Control  Date" means the date of  occurrence of a Change of
     Control;  provided,  that if such  occurrence  is on or prior to January 1,
     2001, the occurrence shall be deemed to have occurred on January 1, 2001.
<PAGE>   2

     4. The  definition  of  "Eligible  Assignee"  in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Eligible  Assignee"  means any Person approved by all of the Lenders;
     provided,  however,  that neither the Borrower  nor any  Subsidiary  of the
     Borrower shall qualify as an Eligible Assignee.

     5. The definition of "Final Maturity Date" set forth in Section 1.01 of the
Credit  Agreement  is  hereby  deleted  in its  entirety  and the  following  is
substituted in lieu thereof:

          "Final  Maturity  Date"  means the  earlier of (a) either the  Initial
     Maturity Date or, if  applicable,  the Extension  Maturity Date and (b) the
     termination in whole of the Commitments pursuant to Section 2.04 or Section
     6.01.

     6. Section 2.03 of the Credit Agreement shall be amended as follows: in the
fifth line, "1/8 of 1%" is hereby deleted and "1/4 of 1%" is substituted in lieu
thereof.

     7.  Section  2.06(a)  of the  Credit  Agreement  is hereby  deleted  in its
entirety and the following is substituted in lieu thereof:

          "(a)  Interest on the  Advances.  From  September 1, 1998,  until such
     principal  amount shall be paid in full, the Borrower shall pay interest on
     the unpaid principal  amount of the Advances,  if any, which interest shall
     be payable  semiannually,  at an  interest  rate per annum equal to 8.941%;
     provided,  however,  that,  if the  Initial  Maturity  Date is on or  after
     January 1, 2001, as of the date occurring 45 Business Days after the Change
     of Control  Date,  the  interest  rate per annum shall be the higher of (x)
     8.941% and (y) the rate  determined  under clause (a) of the  definition of
     Extension Period Interest Rate, determined as of the Change of Control Date
     (rather  than the  Initial  Maturity  Date),  plus the  Applicable  Spread;
     provided,  that in the event of an extension of the then  applicable  Final
     Maturity  Date to the  Extension  Maturity  Date  pursuant to Section  2.15
     hereto,  from the then  applicable  Final  Maturity  Date to the  Extension
     Maturity  Date, the interest rate per annum shall be equal to the Extension
     Period Interest Rate."

     8. Section 2.07  (Interest  Rate  Determination  Upon Change of Control) is
hereby deleted in its entirety and the following is substituted in lieu thereof:
"SECTION 2.07. RESERVED."

     9. The  following  Section 2.15 is hereby added at the end of Article II of
the Credit Agreement:

          "SECTION 2.15.  Extension.  If the then applicable Final Maturity Date
     is a date on or before  December  31, 2000 and the Borrower may desire that
     the Lenders extend the then applicable Final Maturity Date to the Extension
     Maturity Date, then (a) the Borrower shall give written notice of said fact
     (the "Extension Request Notice") to the Agent and the Lenders no later than
     four (4) months before the Final  Maturity Date, (b) the Borrower shall use
     its best  efforts  to obtain  and enter into on or before the date which is
     two  months  prior  to the  Final  Maturity  Date a  Replacement  Financing
     Arrangement  and  (c)  if  the  Borrower  shall  not  have  entered  into a
     Replacement Financing Arrangement on or before the date which is two months
     prior to the Final  Maturity  Date, the Borrower shall deliver to the Agent
     and the Lenders a certificate of the Borrower (the "Extension Certificate")
     (x)  certifying  that  the  Borrower  has not  entered  into a  Replacement
     Financing  Arrangement,  but the Borrower used its best efforts to do so as
     required by clause (b) and setting forth such  evidence and back-up  detail
     as necessary to  demonstrate  the efforts made,  including a written letter
     from each bank from which a Replacement  Financing  Arrangement as required
     by clause (b) was requested,  indicating  that Borrower made such a request
     and that the request was denied, and (y) requesting that the Final Maturity
     Date be extended  to the  Extension  Maturity  Date.  For  purposes of this
     Section, the Borrower shall be deemed to have complied with the requirement
     to use its "best efforts" by requesting from and, if applicable, diligently
     negotiating a Replacement  Financing  Arrangement as required by clause (b)
     with each of three (3) commercial  banks that are nationally  recognized in
     the United States and each have total assets in excess of  $20,000,000,000.
     The Agent shall have the right to designate,  within ten (10) Business Days
     after  receipt  of an  Extension  Request  Notice,  one of the three  banks
     referred  to in the  preceding  sentence.  For  purposes  of this  Section,
     diligent  negotiation  shall mean  negotiation  in good  faith and  without
     denial or unreasonable delay of any reasonable request by any such bank for
     information in connection with its consideration of providing a Replacement
     Financing  Arrangement  to Borrower.  For the  avoidance of doubt,  nothing
     herein is  intended  to  prevent  Borrower  from  obtaining  a  Replacement
     Financing  Arrangement  on terms  equal to or better  than  those  provided
     hereunder.

          Following receipt of the Extension  Certificate,  the Agent and/or the
     Lenders  shall have the right  (without any  obligation to do so) to obtain
     for the Borrower a Replacement  Financing  Arrangement on terms equal to or
     better than those provided hereunder.

          If the Borrower has (a) delivered the Extension  Request Notice within
<PAGE>   3

     the time period  specified  above,  (b) used its best efforts to obtain and
     enter into a Replacement  Financing Arrangement and delivered the Extension
     Certificate within the time period specified above and (c) not unreasonably
     or in bad faith refused to enter into a Replacement  Financing  Arrangement
     (with terms equal to or better than those provided  hereunder) obtained for
     the Borrower by the Agent or any of the Lenders  pursuant to the  preceding
     paragraph,  the Final  Maturity  Date shall be  extended  to the  Extension
     Maturity Date and the interest rate shall be the Extension  Period Interest
     Rate.  The Agent shall provide the Borrower with a written  notice  setting
     forth the Extension Period Interest Rate.

          The Borrower  shall be  responsible  for the payment of any  customary
     commitment  fee and other fees in connection  with  obtaining a Replacement
     Financing Arrangement.

          For the  avoidance of doubt,  in no event shall an Extension  Maturity
     Date be requested by the Borrower  after  December 31, 2000 or be on a date
     after December 31, 2001."

     10. Section 5.02 of the Credit Agreement is deleted in its entirety and the
following is substituted in lieu thereof:

          "SECTION 5.02. Negative Covenants.  On and after September 1, 1998 and
     so long as any Advance  shall  remain  unpaid or any Lender  shall have any
     Commitment  hereunder,  the  Borrower  will not,  unless the Lenders  shall
     otherwise consent in writing:

               (a) Liens,  etc.  Create or suffer to exist, or permit any of its
          Subsidiaries to create or suffer to exist, any lien, security interest
          or other  charge or  encumbrance,  or any other  type of  preferential
          arrangement,  upon or with respect to any of its  properties,  whether
          now owned or  hereafter  acquired,  or  assign,  or permit  any of its
          Subsidiaries to assign,  any right to receive income,  in each case to
          secure any Debt of any Person, other than:

                    (i)  purchase   money  liens  or  purchase   money  security
               interests  upon  or in  any  property  acquired  or  held  by the
               Borrower or any Subsidiary in the ordinary  course of business to
               secure  the  purchase   price  of  such  property  or  to  secure
               indebtedness  incurred  solely for the purpose of  financing  the
               acquisition of such property;

                    (ii) liens or security  interests  existing on such property
               at the time of its  acquisition  (other  than  any  such  lien or
               security interest created in contemplation of such acquisition);

                    (iii) liens for taxes, assessments and government charges or
               levies  to the  extent  not  required  to be paid  under  Section
               5.01(b) hereof;

                    (iv)   liens   imposed  by  law,   such  as   materialmen's,
               mechanics',  carriers', workmen's and repairmen's liens and other
               similar liens arising in the ordinary course of business securing
               obligations  that are not  overdue  for a period  of more than 30
               days;

                    (v) pledges or deposits to secure obligations under workers'
               compensation  laws or similar  legislation or to secure public or
               statutory obligations;

                    (vi)  easements,  rights  of way and other  encumbrances  on
               title to real  property  that do not render title to the property
               encumbered  thereby  unmarketable or materially  adversely affect
               the use of such property for its present purposes; and

                    (vii) liens incurred or deposits made in the ordinary course
               of business to secure the performance of letters of credit, bids,
               tenders, sales contracts,  leases, surety, appeal and performance
               bonds and other  similar  obligations  not incurred in connection
               with the borrowing of money;

          provided,  that the  aggregate  principal  amount of the  Debt,  other
          indebtedness,  taxes,  assessments,  governmental charges or levies or
          other obligations  secured by the liens or security interests referred
          to in clauses  (i) through  (vii) of this  Section  5.02(a)  shall not
          exceed $45,000,000 in the aggregate at any time outstanding.

               (b)  Accounting  Changes.  Make or  permit,  or permit any of its
          Subsidiaries to make or permit,  any change in accounting  policies or
          reporting   practices,   except  as  allowed  by  generally   accepted
          accounting principles."

     11. Unless otherwise  provided herein,  any term in initial capital letters
or all  capital  letters  used as a defined  term but not  defined in this First
Amendment shall have the meaning set forth in the Credit Agreement.

     12.  Except as  modified  herein,  all terms and  conditions  of the Credit
Agreement shall remain in full force and effect.
<PAGE>   4

     13. This First  Amendment shall be governed by, and construed in accordance
with, the laws of the State of New York.

     14. This First Amendment may be executed in any number of counterparts  and
by  different  parties  hereto in separate  counterparts,  each of which when so
executed  shall be deemed an  original  and all of which  taken  together  shall
constitute one and the same agreement. Delivery of any executed counterpart of a
signature  page to this First  Amendment  by  telecopier  shall be  effective as
delivery of a manually executed counterpart of this First Amendment.

     IN WITNESS WHEREOF,  the parties hereto have caused this First Amendment to
be executed by their duly authorized representatives effective as of the day and
year first above written.

MEMC ELECTRONIC MATERIALS, INC., as Borrower


By: /s/ Kenneth L. Young
    ---------------------------------
      Name:  Kenneth L. Young
      Title: Treasurer


HULS CORPORATION, as Agent


By: /s/ H. J. Biangardi
    ---------------------------------
      Name:  H. J. Biangardi
      Title: President and CEO


By: /s/ John Schaffner
    ---------------------------------
      Name:  John Schaffner for Mitchell Solomowitz
      Title: Treasurer


HULS CORPORATION, as the sole Lender


By: /s/ H. J. Biangardi
    ---------------------------------
      Name:  H. J. Biangardi
      Title: President and CEO


By: /s/ John Schaffner
    ---------------------------------
      Name:  John Schaffner for Mitchell Solomowitz
      Title: Treasurer

<PAGE>   1
                                                            EXHIBIT 10-II(2)



                 SECOND AMENDMENT TO REVOLVING CREDIT AGREEMENT

     This Second Amendment to Revolving Credit Agreement ("Second Amendment") is
effective as of September 1, 1998  between MEMC  ELECTRONIC  MATERIALS,  INC., a
Delaware  corporation  ("Borrower"),  as the  Borrower,  and Huls AG, a  company
formed  under the laws of the  Federal  Republic  of  Germany  ("Huls"),  as the
Initial Lender and as Agent.

                                    Recitals

     WHEREAS,  Borrower and Huls entered into a Revolving Credit Agreement dated
as of July 10, 1995 (as amended by the First  Amendment dated March 3, 1998, the
"Credit Agreement")  pursuant to which Huls agreed to extend up to US$75,000,000
of credit to Borrower on a revolving basis;

     WHEREAS,  Borrower,  Huls and  certain  affiliates  of Huls have  agreed to
extend additional  credit to Borrower and to restructure the existing  financing
provided by Huls and its affiliates to Borrower; and

     WHEREAS, as part of such restructuring,  Borrower and Huls desire to change
the interest rate payable by Borrower to Huls under the Credit Agreement.

     NOW THEREFORE,  in consideration  of the foregoing  premises and the mutual
covenants and conditions hereinafter set forth, the parties agree as follows:

     1. The  definition  of  "Eurodollar  Rate" in  Section  1.01 of the  Credit
Agreement is hereby deleted in its entirety.

     2. The following  definitions  are hereby  inserted in proper  alphabetical
order into Section 1.01 of the Credit Agreement:

          "Applicable  Spread" means a percentage  per annum equal to the excess
     of (a) the Bloomberg  fair market  sector  curves  (adjusted for the chosen
     interest  rate method)  applicable  two business  days prior to the Initial
     Termination Date to a B3 rated industrial  borrower for the period from the
     Initial  Termination  Date  through the latest  possible  Termination  Date
     (taking into account, if applicable, the latest Extension Termination Date)
     over (b) the corresponding Swap Rate for such period.

          "Extension Certificate" has the meaning specified in Section 2.15.

          "Extension Request Notice" has the meaning set forth in Section 2.15.

          "Extension  Termination Date", if any, means the earlier of (a) either
     (i) the first anniversary of the Initial Termination Date, or (ii) if there
     has been an earlier  applicable  Extension  Termination Date on or prior to
     December  31,  1999,  the  first   anniversary  of  such  prior   Extension
     Termination  Date,  or  (iii)  if  there  has  been an  earlier  applicable
     Extension  Termination  Date  after  December  31,  1999  and on or  before
     December  31,  2000,  the  first   anniversary  of  such  prior   Extension
     Termination  Date  and (b) the  termination  in  whole  of the  Commitments
     pursuant to Section 2.04 or Section 6.01; provided,  that in no event shall
     an Extension Termination Date be after December 31, 2001.

          "Initial Termination Date" for any Advance means September 30, 1998.

          "Interest  Coverage Ratio" means, with respect to the Borrower and its
     Subsidiaries  on a  Consolidated  basis  for any  period,  a  ratio  of (a)
     Consolidated  EBIT of the Borrower and its  subsidiaries for such period to
     (b) interest payable on all Debt during such period.

          "Interest  Rate"  means a rate per annum at all times equal to the sum
     of (i) the British Bankers'  Association  (BBA) LIBOR rate (as shown on the
     Reuters page FRBD or comparable  pages) for such  Interest  Period for such
     Advance,  divided by a percentage  equal to 100% minus the Eurodollar  Rate
     Reserve  Percentage  for such  Interest  Period,  plus (ii) the  Applicable
     Spread.

          "Replacement Financing Arrangement" means a financing arrangement with
     any  Person who is not an  Affiliate  of the  Borrower  or the Agent or any
     Lender on  substantially  the terms which would apply hereunder  during the
     period from the then  applicable  Termination  Date to the latest  possible
     Extension  Termination  Date,  provided  that  the  interest  rate  of such
     Replacement Financing Arrangement shall be no higher than the Interest Rate
     and, if no lesser interest rate is available, shall be the Interest Rate.

          "Swap Rate" means the US-Dollar  denominated  interbank  interest rate
     swap  rates/LIBOR  offered  rates as shown on  Reuters  page ICAP and other
     comparable  brokerage  pages,  adjusted for the chosen interest rate method
     (annual/semi-annual compounding, etc.).

     3. The definition of "Debt" in Section 1.01 of the Credit  Agreement  shall
be amended by deleting in its  entirety  the  proviso  beginning  in the seventh
line.

     4. The  definition  of  "Eligible  Assignee"  in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:
<PAGE>   2

          "Eligible  Assignee"  means any Person approved by all of the Lenders;
     provided,  however,  that neither the Borrower  nor any  Subsidiary  of the
     Borrower shall qualify as an Eligible Assignee.

     5. The  definition of  "Termination  Date" set forth in Section 1.01 of the
Credit  Agreement  is  hereby  deleted  in its  entirety  and the  following  is
substituted in lieu thereof:

          "Termination  Date"  means  the  earlier  of (a)  either  the  Initial
     Termination Date or, if applicable,  the Extension Termination Date and (b)
     the  termination  in whole of the  Commitments  pursuant to Section 2.04 or
     Section 6.01.

     6. Section 2.03 of the Credit Agreement shall be amended as follows: in the
fifth line, "1/8 of 1%" is hereby deleted and "1/4 of 1%" is substituted in lieu
thereof.

     7.  Section  2.07(a)  of the  Credit  Agreement  is hereby  deleted  in its
entirety and the following is substituted in lieu thereof:

          "(a) Interest on the Advances.  The Borrower shall pay interest on the
     unpaid  principal amount of each Advance owing to each Lender from the date
     of such  Advance  until such  principal  amount shall be paid in full at an
     interest rate equal to (i) from September 1, 1998,  until and including the
     Initial  Termination  Date, 6.903% and (ii) as of the day after the Initial
     Termination Date, the Interest Rate,  payable in arrears on the last day of
     such Interest Period and on the date such Advance shall be paid in full."

     8. The  following  Section 2.15 is hereby added at the end of Article II of
the Credit Agreement:

          "SECTION 2.15. Extension. If the then applicable Termination Date is a
     date on or before  December  31, 2000 and the  Borrower may desire that the
     Lenders  extend  the  then  applicable  Termination  Date to the  Extension
     Termination  Date,  then (a) the Borrower shall give written notice of said
     fact (the "Extension Request Notice") to the Agent and the Lenders no later
     than four (4) months before the  Termination  Date,  (b) the Borrower shall
     use its best  efforts  to obtain and enter into on or before the date which
     is two  months  prior  to the  Termination  Date  a  Replacement  Financing
     Arrangement  and  (c)  if  the  Borrower  shall  not  have  entered  into a
     Replacement Financing Arrangement on or before the date which is two months
     prior to the Termination  Date, the Borrower shall deliver to the Agent and
     the Lenders a certificate of the Borrower (the "Extension Certificate") (x)
     certifying  that the Borrower has not entered into a Replacement  Financing
     Arrangement, but the Borrower used its best efforts to do so as required by
     clause (b) and setting forth such evidence and back-up  detail as necessary
     to demonstrate the efforts made,  including a written letter from each bank
     from which a Replacement  Financing  Arrangement  as required by clause (b)
     was  requested,  indicating  that Borrower made such a request and that the
     request  was  denied,  and (y)  requesting  that  the  Termination  Date be
     extended to the Extension  Termination  Date. For purposes of this Section,
     the Borrower  shall be deemed to have complied with the  requirement to use
     its "best  efforts"  by  requesting  from and,  if  applicable,  diligently
     negotiating a Replacement  Financing  Arrangement as required by clause (b)
     with each of three (3) commercial  banks that are nationally  recognized in
     the United States and each have total assets in excess of  $20,000,000,000.
     The Agent shall have the right to designate,  within ten (10) Business Days
     after  receipt  of an  Extension  Request  Notice,  one of the three  banks
     referred  to in the  preceding  sentence.  For  purposes  of this  Section,
     diligent  negotiation  shall mean  negotiation  in good  faith and  without
     denial or unreasonable delay of any reasonable request by any such bank for
     information in connection with its consideration of providing a Replacement
     Financing  Arrangement  to Borrower.  For the  avoidance of doubt,  nothing
     herein is  intended  to  prevent  Borrower  from  obtaining  a  Replacement
     Financing  Arrangement  on terms  equal to or better  than  those  provided
     hereunder.

          Following receipt of the Extension  Certificate,  the Agent and/or the
     Lenders  shall have the right  (without any  obligation to do so) to obtain
     for the Borrower a Replacement  Financing  Arrangement on terms equal to or
     better than those provided hereunder.

          If the Borrower has (a) delivered the Extension  Request Notice within
     the time period  specified  above,  (b) used its best efforts to obtain and
     enter into a Replacement  Financing Arrangement and delivered the Extension
     Certificate within the time period specified above and (c) not unreasonably
     or in bad faith refused to enter into a Replacement  Financing  Arrangement
     (with terms equal to or better than those provided  hereunder) obtained for
     the Borrower by the Agent or any of the Lenders  pursuant to the  preceding
     paragraph,  the  Termination  Date  shall  be  extended  to  the  Extension
     Termination  Date and the  interest  rate shall be the Interest  Rate.  The
     Agent shall  provide the Borrower with a written  notice  setting forth the
     Interest Rate.

          The Borrower  shall be  responsible  for the payment of any  customary
     commitment  fee and other fees in connection  with  obtaining a Replacement
     Financing Arrangement.

          For the avoidance of doubt, in no event shall an Extension Termination

<PAGE>   3


     Date be requested by the Borrower  after  December 31, 2000 or be on a date
     after December 31, 2001."

     9. Section 5.02 of the Credit  Agreement is deleted in its entirety and the
following is substituted in lieu thereof:

          "SECTION 5.02. Negative Covenants.  On and after September 1, 1998 and
     so long as any Advance  shall  remain  unpaid or any Lender  shall have any
     Commitment  hereunder,  the  Borrower  will not,  unless the Lenders  shall
     otherwise consent in writing:

               (a) Liens,  etc.  Create or suffer to exist, or permit any of its
          Subsidiaries to create or suffer to exist, any lien, security interest
          or other  charge or  encumbrance,  or any other  type of  preferential
          arrangement,  upon or with respect to any of its  properties,  whether
          now owned or  hereafter  acquired,  or  assign,  or permit  any of its
          Subsidiaries to assign,  any right to receive income,  in each case to
          secure any Debt of any Person, other than:

                    (i)  purchase   money  liens  or  purchase   money  security
               interests  upon  or in  any  property  acquired  or  held  by the
               Borrower or any Subsidiary in the ordinary  course of business to
               secure  the  purchase   price  of  such  property  or  to  secure
               indebtedness  incurred  solely for the purpose of  financing  the
               acquisition of such property;

                    (ii) liens or security  interests  existing on such property
               at the time of its  acquisition  (other  than  any  such  lien or
               security interest created in contemplation of such acquisition);

                    (iii) liens for taxes, assessments and government charges or
               levies  to the  extent  not  required  to be paid  under  Section
               5.01(b) hereof;

                    (iv)   liens   imposed  by  law,   such  as   materialmen's,
               mechanics',  carriers', workmen's and repairmen's liens and other
               similar liens arising in the ordinary course of business securing
               obligations  that are not  overdue  for a period  of more than 30
               days;

                    (v) pledges or deposits to secure obligations under workers'
               compensation  laws or similar  legislation or to secure public or
               statutory obligations;

                    (vi)  easements,  rights  of way and other  encumbrances  on
               title to real  property  that do not render title to the property
               encumbered  thereby  unmarketable or materially  adversely affect
               the use of such property for its present purposes; and

                    (vii) liens incurred or deposits made in the ordinary course
               of business to secure the performance of letters of credit, bids,
               tenders, sales contracts,  leases, surety, appeal and performance
               bonds and other  similar  obligations  not incurred in connection
               with the borrowing of money;

          provided,  that the  aggregate  principal  amount of the  Debt,  other
          indebtedness,  taxes,  assessments,  governmental charges or levies or
          other obligations  secured by the liens or security interests referred
          to in clauses  (i) through  (vii) of this  Section  5.02(a)  shall not
          exceed $45,000,000 in the aggregate at any time outstanding.

               (b)  Accounting  Changes.  Make or  permit,  or permit any of its
          Subsidiaries to make or permit,  any change in accounting  policies or
          reporting   practices,   except  as  allowed  by  generally   accepted
          accounting principles."

     10. Unless otherwise  provided herein,  any term in initial capital letters
or all  capital  letters  used as a defined  term but not defined in this Second
Amendment shall have the meaning set forth in the Credit Agreement.

     11.  Except as  modified  herein,  all terms and  conditions  of the Credit
Agreement shall remain in full force and effect.

     12. This Second Amendment shall be governed by, and construed in accordance
with, the laws of the State of New York.

     13. This Second Amendment may be executed in any number of counterparts and
by  different  parties  hereto in separate  counterparts,  each of which when so
executed  shall be deemed an  original  and all of which  taken  together  shall
constitute one and the same agreement. Delivery of any executed counterpart of a
signature  page to this Second  Amendment  by  telecopier  shall be effective as
delivery of a manually executed counterpart of this Second Amendment.

     IN WITNESS WHEREOF, the parties hereto have caused this Second Amendment to
be executed by their duly authorized representatives effective as of the day and
year first above written.


MEMC ELECTRONIC MATERIALS, INC., as Borrower

<PAGE>   4

By: /s/ Kenneth L. Young
    -----------------------------------
      Name:  Kenneth L. Young
      Title: Treasurer


HULS AG, as Agent


By: /s/ Georg Muller
    -----------------------------------
      Name:  Georg Muller
      Title:


By: /s/ Jurgen Buchsteiner
    -----------------------------------
      Name:  Jurgen Buchsteiner
      Title:


HULS AG, as the Initial Lender


By: /s/ Georg Muller
    -----------------------------------
      Name:  Georg Muller
      Title:


By: /s/ Jurgen Buchsteiner
    -----------------------------------
      Name: Jurgen Buchsteiner
      Title:

<PAGE>   1
                                                            EXHIBIT 10-QQ(1)


                       FIRST AMENDMENT TO CREDIT AGREEMENT

     This First Amendment to Credit Agreement  ("First  Amendment") is effective
as of  September 1, 1998 between  MEMC  ELECTRONIC  MATERIALS,  INC., a Delaware
corporation  ("Borrower"),  as the Borrower, and HULS AG, a company formed under
the laws of the Federal Republic of Germany ("Huls"),  as the sole Lender and as
Agent.

                                    Recitals

     WHEREAS,  Borrower  and Huls entered  into a Credit  Agreement  dated as of
December  22,  1995 (the  "Credit  Agreement")  pursuant to which Huls agreed to
extend up to Yen 1,000,000,000 of credit to Borrower on a term basis;

     WHEREAS,  Borrower,  Huls and  certain  affiliates  of Huls have  agreed to
extend additional  credit to Borrower and to restructure the existing  financing
provided by Huls and its affiliates to Borrower, and

     WHEREAS, as part of such restructuring,  Borrower and Huls desire to change
the interest rate payable by Borrower to Huls under the Credit Agreement.

     NOW THEREFORE,  in consideration  of the foregoing  premises and the mutual
covenants and conditions hereinafter set forth, the parties agree as follows:

     1. The  definitions  of  "Applicable  Margin",  "Base  Rate",  "Performance
Level",  "Performance Level I", "Performance Level II",  "Performance Level III"
and  "Performance  Level IV" in Section 1.01 of the Credit  Agreement are hereby
deleted in their entirety.

     2. The following  definitions  are hereby  inserted in proper  alphabetical
order into Section 1.01 of the Credit Agreement:

          "Applicable  Spread" means a percentage  per annum equal to the excess
     of (a) the Bloomberg  fair market  sector  curves  (adjusted for the chosen
     interest  rate method)  applicable  two business  days prior to the Initial
     Termination Date to a B3 rated industrial  borrower for the period from the
     Initial  Termination  Date  through the latest  possible  Termination  Date
     (taking into account, if applicable, the latest Extension Termination Date)
     over (b) the corresponding Swap Rate for such period.

          "Extension Certificate" has the meaning specified in Section 2.14.

          "Extension  Period Interest Rate" means two business days prior to the
     Initial Termination Date, (a) either the British Bankers' Association (BBA)
     LIBOR rate (as shown on the Reuters page FRBD or comparable  pages) for the
     12-month  period or the Swap Rate for the  24-month  period or the 36-month
     period  commencing from the Initial  Termination  Date as follows:  (i) the
     36-month period for Advances  subject to an Initial  Termination Date on or
     prior to December 31, 1998, (ii) the 24-month  period for Advances  subject
     to an Initial  Termination  Date on or prior to December 31, 1999, or (iii)
     the 12-month period for all other Advances, plus (b) the Applicable Spread.

          "Extension Request Notice" has the meaning set forth in Section 2.14.

          "Extension  Termination Date", if any, means the earlier of (a) either
     (i) the first anniversary of the Initial Termination Date, or (ii) if there
     has been an earlier  applicable  Extension  Termination Date on or prior to
     December  31,  1999,  the  first   anniversary  of  such  prior   Extension
     Termination  Date,  or  (iii)  if  there  has  been an  earlier  applicable
     Extension  Termination  Date  after  December  31,  1999  and on or  before
     December  31,  2000,  the  first   anniversary  of  such  prior   Extension
     Termination  Date  and (b) the  termination  in  whole  of the  Commitments
     pursuant to Section  6.01;  provided,  that in no event shall an  Extension
     Termination Date be after December 31, 2001.

          "Initial Termination Date" for any Advance means December 22, 1999.

          "Replacement Financing Arrangement" means a financing arrangement with
     any  Person who is not an  Affiliate  of the  Borrower  or the Agent or any
     Lender on  substantially  the terms which would apply hereunder  during the
     period from the then  applicable  Termination  Date to the latest  possible
     Extension  Termination  Date,  provided  that  the  interest  rate  of such
     Replacement  Financing  Arrangement  shall be no higher than the  Extension
     Period Interest Rate and, if no lesser interest rate is available, shall be
     the Extension Period Interest Rate.

          "Swap Rate" means the US-Dollar  denominated  interbank  interest rate
     swap  rates/LIBOR  offered  rates as shown on  Reuters  page ICAP and other
     comparable  brokerage  pages,  adjusted for the chosen interest rate method
     (annual/semi-annual compounding, etc.).

     3. The definition of "Change of Control Date" in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Change of Control  Date" means the date of  occurrence of a Change of
     Control;  provided,  that if such  occurrence  is on or prior to January 1,
     2001, the occurrence shall be deemed to have occurred on January 1, 2001.
<PAGE>   2


     4. The  definition  of  "Eligible  Assignee"  in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Eligible  Assignee"  means any Person approved by all of the Lenders;
     provided,  however,  that neither the Borrower  nor any  Subsidiary  of the
     Borrower shall qualify as an Eligible Assignee.

     5. The  definition of  "Termination  Date" set forth in Section 1.01 of the
Credit  Agreement  is  hereby  deleted  in its  entirety  and the  following  is
substituted in lieu thereof:

          "Termination  Date"  means  the  earlier  of (a)  either  the  Initial
     Termination Date or, if applicable,  the Extension Termination Date and (b)
     the termination in whole of the Commitments pursuant to Section 6.01.

     6. Section 2.03 of the Credit Agreement shall be amended as follows: in the
fifth line, "1/8 of 1%" is hereby deleted and "1/4 of 1%" is substituted in lieu
thereof.

     7.  Section  2.05(a)  of the  Credit  Agreement  is hereby  deleted  in its
entirety and the following is substituted in lieu thereof:

                  "(a) Interest on the Advances.  From September 1, 1998,  until
         such  principal  amount shall be paid in full,  the Borrower  shall pay
         interest on the unpaid principal amount of the Advances,  if any, which
         interest shall be payable  semiannually,  at an interest rate per annum
         equal to 3.427%;  provided,  however,  that, if the Initial Termination
         Date is on or  after  January  1,  2001,  as of the date  occurring  45
         Business Days after the Change of Control  Date,  the interest rate per
         annum  shall be the higher of (x)  3.427%  and (y) the rate  determined
         under clause (a) of the definition of Extension  Period  Interest Rate,
         determined  as of the Change of Control  Date  (rather than the Initial
         Termination  Date), plus the Applicable Spread;  provided,  that in the
         event of an extension of the then  applicable  Termination  Date to the
         Extension  Termination  Date pursuant to Section 2.14 hereto,  from the
         then applicable Termination Date to the Extension Termination Date, the
         interest rate per annum shall be equal to the Extension Period Interest
         Rate."

     8. Section 2.06  (Interest  Rate  Determination  Upon Change of Control) is
hereby deleted in its entirety and the following is substituted in lieu thereof:
"SECTION 2.06. RESERVED."

     9. The  following  Section 2.14 is hereby added at the end of Article II of
the Credit Agreement:

          "SECTION 2.14. Extension. If the then applicable Termination Date is a
     date on or before  December  31, 2000 and the  Borrower may desire that the
     Lenders  extend  the  then  applicable  Termination  Date to the  Extension
     Termination  Date,  then (a) the Borrower shall give written notice of said
     fact (the "Extension Request Notice") to the Agent and the Lenders no later
     than four (4) months before the  Termination  Date,  (b) the Borrower shall
     use its best  efforts  to obtain and enter into on or before the date which
     is two  months  prior  to the  Termination  Date  a  Replacement  Financing
     Arrangement  and  (c)  if  the  Borrower  shall  not  have  entered  into a
     Replacement Financing Arrangement on or before the date which is two months
     prior to the Termination  Date, the Borrower shall deliver to the Agent and
     the Lenders a certificate of the Borrower (the "Extension Certificate") (x)
     certifying  that the Borrower has not entered into a Replacement  Financing
     Arrangement, but the Borrower used its best efforts to do so as required by
     clause (b) and setting forth such evidence and back-up  detail as necessary
     to demonstrate the efforts made,  including a written letter from each bank
     from which a Replacement  Financing  Arrangement  as required by clause (b)
     was  requested,  indicating  that Borrower made such a request and that the
     request  was  denied,  and (y)  requesting  that  the  Termination  Date be
     extended to the Extension  Termination  Date. For purposes of this Section,
     the Borrower  shall be deemed to have complied with the  requirement to use
     its "best  efforts"  by  requesting  from and,  if  applicable,  diligently
     negotiating a Replacement  Financing  Arrangement as required by clause (b)
     with each of three (3) commercial  banks that are nationally  recognized in
     the United States and each have total assets in excess of  $20,000,000,000.
     The Agent shall have the right to designate,  within ten (10) Business Days
     after  receipt  of an  Extension  Request  Notice,  one of the three  banks
     referred  to in the  preceding  sentence.  For  purposes  of this  Section,
     diligent  negotiation  shall mean  negotiation  in good  faith and  without
     denial or unreasonable delay of any reasonable request by any such bank for
     information in connection with its consideration of providing a Replacement
     Financing  Arrangement  to Borrower.  For the  avoidance of doubt,  nothing
     herein is  intended  to  prevent  Borrower  from  obtaining  a  Replacement
     Financing  Arrangement  on terms  equal to or better  than  those  provided
     hereunder.

          Following receipt of the Extension  Certificate,  the Agent and/or the
     Lenders  shall have the right  (without any  obligation to do so) to obtain
     for the Borrower a Replacement  Financing  Arrangement on terms equal to or
     better than those provided hereunder.

          If the Borrower has (a) delivered the Extension  Request Notice within

<PAGE>   3


     the time period  specified  above,  (b) used its best efforts to obtain and
     enter into a Replacement  Financing Arrangement and delivered the Extension
     Certificate within the time period specified above and (c) not unreasonably
     or in bad faith refused to enter into a Replacement  Financing  Arrangement
     (with terms equal to or better than those provided  hereunder) obtained for
     the Borrower by the Agent or any of the Lenders  pursuant to the  preceding
     paragraph,  the  Termination  Date  shall  be  extended  to  the  Extension
     Termination  Date  and the  interest  rate  shall be the  Extension  Period
     Interest  Rate.  The Agent shall provide the Borrower with a written notice
     setting forth the Extension Period Interest Rate.

          The Borrower  shall be  responsible  for the payment of any  customary
     commitment  fee and other fees in connection  with  obtaining a Replacement
     Financing Arrangement.

          For the avoidance of doubt, in no event shall an Extension Termination
     Date be requested by the Borrower  after  December 31, 2000 or be on a date
     after December 31, 2001."

     10. Section 5.02 of the Credit Agreement is deleted in its entirety and the
following is substituted in lieu thereof:

          "SECTION 5.02. Negative Covenants.  On and after September 1, 1998 and
     so long as any Advance  shall  remain  unpaid or any Lender  shall have any
     Commitment  hereunder,  the  Borrower  will not,  unless the Lenders  shall
     otherwise consent in writing:

               (a) Liens,  etc.  Create or suffer to exist, or permit any of its
          Subsidiaries to create or suffer to exist, any lien, security interest
          or other  charge or  encumbrance,  or any other  type of  preferential
          arrangement,  upon or with respect to any of its  properties,  whether
          now owned or  hereafter  acquired,  or  assign,  or permit  any of its
          Subsidiaries to assign,  any right to receive income,  in each case to
          secure any Debt of any Person, other than:

                    (i)  purchase   money  liens  or  purchase   money  security
               interests  upon  or in  any  property  acquired  or  held  by the
               Borrower or any Subsidiary in the ordinary  course of business to
               secure  the  purchase   price  of  such  property  or  to  secure
               indebtedness  incurred  solely for the purpose of  financing  the
               acquisition of such property;

                    (ii) liens or security  interests  existing on such property
               at the time of its  acquisition  (other  than  any  such  lien or
               security interest created in contemplation of such acquisition);

                    (iii) liens for taxes, assessments and government charges or
               levies  to the  extent  not  required  to be paid  under  Section
               5.01(b) hereof;

                    (iv)   liens   imposed  by  law,   such  as   materialmen's,
               mechanics',  carriers', workmen's and repairmen's liens and other
               similar liens arising in the ordinary course of business securing
               obligations  that are not  overdue  for a period  of more than 30
               days;

                    (v) pledges or deposits to secure obligations under workers'
               compensation  laws or similar  legislation or to secure public or
               statutory obligations;

                    (vi)  easements,  rights  of way and other  encumbrances  on
               title to real  property  that do not render title to the property
               encumbered  thereby  unmarketable or materially  adversely affect
               the use of such property for its present purposes; and

                    (vii) liens incurred or deposits made in the ordinary course
               of business to secure the performance of letters of credit, bids,
               tenders, sales contracts,  leases, surety, appeal and performance
               bonds and other  similar  obligations  not incurred in connection
               with the borrowing of money;

          provided,  that the  aggregate  principal  amount of the  Debt,  other
          indebtedness,  taxes,  assessments,  governmental charges or levies or
          other obligations  secured by the liens or security interests referred
          to in clauses  (i) through  (vii) of this  Section  5.02(a)  shall not
          exceed $45,000,000 in the aggregate at any time outstanding.

               (b)  Accounting  Changes.  Make or  permit,  or permit any of its
          Subsidiaries to make or permit,  any change in accounting  policies or
          reporting   practices,   except  as  allowed  by  generally   accepted
          accounting principles."

     11. Unless otherwise  provided herein,  any term in initial capital letters
or all  capital  letters  used as a defined  term but not  defined in this First
Amendment shall have the meaning set forth in the Credit Agreement.

     12.  Except as  modified  herein,  all terms and  conditions  of the Credit
Agreement shall remain in full force and effect.
<PAGE>   4

     13. This First  Amendment shall be governed by, and construed in accordance
with, the laws of the State of New York.

     14. This First Amendment may be executed in any number of counterparts  and
by  different  parties  hereto in separate  counterparts,  each of which when so
executed  shall be deemed an  original  and all of which  taken  together  shall
constitute one and the same agreement. Delivery of any executed counterpart of a
signature  page to this First  Amendment  by  telecopier  shall be  effective as
delivery of a manually executed counterpart of this First Amendment.

     IN WITNESS WHEREOF,  the parties hereto have caused this First Amendment to
be executed by their duly authorized representatives effective as of the day and
year first above written.


MEMC ELECTRONIC MATERIALS, INC., as Borrower


By: /s/ Kenneth L. Young
    -----------------------------------
      Name:  Kenneth L. Young
      Title: Treasurer


HULS AG, as Agent


By: /s/ Georg Muller
    -----------------------------------
      Name:  Georg Muller
      Title:


By: /s/ Jurgen Buchsteiner
    -----------------------------------
      Name:  Jurgen Buchsteiner
      Title:


HULS AG, as the sole Lender


By: /s/ Georg Muller
    -----------------------------------
      Name:  Georg Muller
      Title:


By: /s/ Jurgen Buchsteiner
    -----------------------------------
      Name: Jurgen Buchsteiner
      Title:

<PAGE>   1
                                                                EXHIBIT 10-RR(1)



                       FIRST AMENDMENT TO CREDIT AGREEMENT

     This First Amendment to Credit Agreement  ("First  Amendment") is effective
as of  September 1, 1998 between  MEMC  ELECTRONIC  MATERIALS,  INC., a Delaware
corporation  ("Borrower"),  as the Borrower, and HULS AG, a company formed under
the laws of the Federal Republic of Germany ("Huls"),  as the sole Lender and as
Agent.

                                    Recitals

     WHEREAS,  Borrower  and Huls entered  into a Credit  Agreement  dated as of
December  22,  1995 (the  "Credit  Agreement")  pursuant to which Huls agreed to
extend up to Yen 1,000,000,000 of credit to Borrower on a term basis;

     WHEREAS,  Borrower,  Huls and  certain  affiliates  of Huls have  agreed to
extend additional  credit to Borrower and to restructure the existing  financing
provided by Huls and its affiliates to Borrower, and

     WHEREAS, as part of such restructuring,  Borrower and Huls desire to change
the interest rate payable by Borrower to Huls under the Credit Agreement.

     NOW THEREFORE,  in consideration  of the foregoing  premises and the mutual
covenants and conditions hereinafter set forth, the parties agree as follows:

     1. The  definitions  of  "Applicable  Margin",  "Base  Rate",  "Performance
Level",  "Performance Level I", "Performance Level II",  "Performance Level III"
and  "Performance  Level IV" in Section 1.01 of the Credit  Agreement are hereby
deleted in their entirety.

     2. The following  definitions  are hereby  inserted in proper  alphabetical
order into Section 1.01 of the Credit Agreement:

          "Applicable  Spread" means a percentage  per annum equal to the excess
     of (a) the Bloomberg  fair market  sector  curves  (adjusted for the chosen
     interest  rate method)  applicable  two business  days prior to the Initial
     Termination Date to a B3 rated industrial  borrower for the period from the
     Initial  Termination  Date  through the latest  possible  Termination  Date
     (taking into account, if applicable, the latest Extension Termination Date)
     over (b) the corresponding Swap Rate for such period.

          "Extension Certificate" has the meaning specified in Section 2.14.

          "Extension  Period Interest Rate" means two business days prior to the
     Initial Termination Date, (a) either the British Bankers' Association (BBA)
     LIBOR rate (as shown on the Reuters page FRBD or comparable  pages) for the
     12-month  period or the Swap Rate for the  24-month  period or the 36-month
     period  commencing from the Initial  Termination  Date as follows:  (i) the
     36-month period for Advances  subject to an Initial  Termination Date on or
     prior to December 31, 1998, (ii) the 24-month  period for Advances  subject
     to an Initial  Termination  Date on or prior to December 31, 1999, or (iii)
     the 12-month period for all other Advances, plus (b) the Applicable Spread.

          "Extension Request Notice" has the meaning set forth in Section 2.14.

          "Extension  Termination Date", if any, means the earlier of (a) either
     (i) the first anniversary of the Initial Termination Date, or (ii) if there
     has been an earlier  applicable  Extension  Termination Date on or prior to
     December  31,  1999,  the  first   anniversary  of  such  prior   Extension
     Termination  Date,  or  (iii)  if  there  has  been an  earlier  applicable
     Extension  Termination  Date  after  December  31,  1999  and on or  before
     December  31,  2000,  the  first   anniversary  of  such  prior   Extension
     Termination  Date  and (b) the  termination  in  whole  of the  Commitments
     pursuant to Section  6.01;  provided,  that in no event shall an  Extension
     Termination Date be after December 31, 2001.

          "Initial Termination Date" for any Advance means December 22, 2000.

          "Replacement Financing Arrangement" means a financing arrangement with
     any  Person who is not an  Affiliate  of the  Borrower  or the Agent or any
     Lender on  substantially  the terms which would apply hereunder  during the
     period from the then  applicable  Termination  Date to the latest  possible
     Extension  Termination  Date,  provided  that  the  interest  rate  of such
     Replacement  Financing  Arrangement  shall be no higher than the  Extension
     Period Interest Rate and, if no lesser interest rate is available, shall be
     the Extension Period Interest Rate.

          "Swap Rate" means the US-Dollar  denominated  interbank  interest rate
     swap  rates/LIBOR  offered  rates as shown on  Reuters  page ICAP and other
     comparable  brokerage  pages,  adjusted for the chosen interest rate method
     (annual/semi-annual compounding, etc.).

     3. The definition of "Change of Control Date" in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Change of Control  Date" means the date of  occurrence of a Change of
     Control;  provided,  that if such  occurrence  is on or prior to January 1,
     2001, the occurrence shall be deemed to have occurred on January 1, 2001.
<PAGE>   2

     4. The  definition  of  "Eligible  Assignee"  in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Eligible  Assignee"  means any Person approved by all of the Lenders;
     provided,  however,  that neither the Borrower  nor any  Subsidiary  of the
     Borrower shall qualify as an Eligible Assignee.

     5. The  definition of  "Termination  Date" set forth in Section 1.01 of the
Credit  Agreement  is  hereby  deleted  in its  entirety  and the  following  is
substituted in lieu thereof:

          "Termination  Date"  means  the  earlier  of (a)  either  the  Initial
     Termination Date or, if applicable,  the Extension Termination Date and (b)
     the termination in whole of the Commitments pursuant to Section 6.01.

     6. Section 2.03 of the Credit Agreement shall be amended as follows: in the
fifth line, "1/8 of 1%" is hereby deleted and "1/4 of 1%" is substituted in lieu
thereof.

     7.  Section  2.05(a)  of the  Credit  Agreement  is hereby  deleted  in its
entirety and the following is substituted in lieu thereof:

          "(a)  Interest on the  Advances.  From  September 1, 1998,  until such
     principal  amount shall be paid in full, the Borrower shall pay interest on
     the unpaid principal  amount of the Advances,  if any, which interest shall
     be payable  semiannually,  at an  interest  rate per annum equal to 4.136%;
     provided,  however,  that, if the Initial  Termination  Date is on or after
     January 1, 2001, as of the date occurring 45 Business Days after the Change
     of Control  Date,  the  interest  rate per annum shall be the higher of (x)
     4.136% and (y) the rate  determined  under clause (a) of the  definition of
     Extension Period Interest Rate, determined as of the Change of Control Date
     (rather than the Initial  Termination  Date),  plus the Applicable  Spread;
     provided,  that  in  the  event  of an  extension  of the  then  applicable
     Termination Date to the Extension Termination Date pursuant to Section 2.14
     hereto,  from  the  then  applicable  Termination  Date  to  the  Extension
     Termination  Date,  the  interest  rate  per  annum  shall  be equal to the
     Extension Period Interest Rate."

     8. Section 2.06  (Interest  Rate  Determination  Upon Change of Control) is
hereby deleted in its entirety and the following is substituted in lieu thereof:
"SECTION 2.06. RESERVED."

     9. The  following  Section 2.14 is hereby added at the end of Article II of
the Credit Agreement:

          "SECTION 2.14. Extension. If the then applicable Termination Date is a
     date on or before  December  31, 2000 and the  Borrower may desire that the
     Lenders  extend  the  then  applicable  Termination  Date to the  Extension
     Termination  Date,  then (a) the Borrower shall give written notice of said
     fact (the "Extension Request Notice") to the Agent and the Lenders no later
     than four (4) months before the  Termination  Date,  (b) the Borrower shall
     use its best  efforts  to obtain and enter into on or before the date which
     is two  months  prior  to the  Termination  Date  a  Replacement  Financing
     Arrangement  and  (c)  if  the  Borrower  shall  not  have  entered  into a
     Replacement Financing Arrangement on or before the date which is two months
     prior to the Termination  Date, the Borrower shall deliver to the Agent and
     the Lenders a certificate of the Borrower (the "Extension Certificate") (x)
     certifying  that the Borrower has not entered into a Replacement  Financing
     Arrangement, but the Borrower used its best efforts to do so as required by
     clause (b) and setting forth such evidence and back-up  detail as necessary
     to demonstrate the efforts made,  including a written letter from each bank
     from which a Replacement  Financing  Arrangement  as required by clause (b)
     was  requested,  indicating  that Borrower made such a request and that the
     request  was  denied,  and (y)  requesting  that  the  Termination  Date be
     extended to the Extension  Termination  Date. For purposes of this Section,
     the Borrower  shall be deemed to have complied with the  requirement to use
     its "best  efforts"  by  requesting  from and,  if  applicable,  diligently
     negotiating a Replacement  Financing  Arrangement as required by clause (b)
     with each of three (3) commercial  banks that are nationally  recognized in
     the United States and each have total assets in excess of  $20,000,000,000.
     The Agent shall have the right to designate,  within ten (10) Business Days
     after  receipt  of an  Extension  Request  Notice,  one of the three  banks
     referred  to in the  preceding  sentence.  For  purposes  of this  Section,
     diligent  negotiation  shall mean  negotiation  in good  faith and  without
     denial or unreasonable delay of any reasonable request by any such bank for
     information in connection with its consideration of providing a Replacement
     Financing  Arrangement  to Borrower.  For the  avoidance of doubt,  nothing
     herein is  intended  to  prevent  Borrower  from  obtaining  a  Replacement
     Financing  Arrangement  on terms  equal to or better  than  those  provided
     hereunder.

          Following receipt of the Extension  Certificate,  the Agent and/or the
     Lenders  shall have the right  (without any  obligation to do so) to obtain
     for the Borrower a Replacement  Financing  Arrangement on terms equal to or
     better than those provided hereunder.

          If the Borrower has (a) delivered the Extension  Request Notice within
     the time period  specified  above,  (b) used its best efforts to obtain and


<PAGE>   3


     enter into a Replacement  Financing Arrangement and delivered the Extension
     Certificate within the time period specified above and (c) not unreasonably
     or in bad faith refused to enter into a Replacement  Financing  Arrangement
     (with terms equal to or better than those provided  hereunder) obtained for
     the Borrower by the Agent or any of the Lenders  pursuant to the  preceding
     paragraph,  the  Termination  Date  shall  be  extended  to  the  Extension
     Termination  Date  and the  interest  rate  shall be the  Extension  Period
     Interest  Rate.  The Agent shall provide the Borrower with a written notice
     setting forth the Extension Period Interest Rate.

          The Borrower  shall be  responsible  for the payment of any  customary
     commitment  fee and other fees in connection  with  obtaining a Replacement
     Financing Arrangement.

          For the avoidance of doubt, in no event shall an Extension Termination
     Date be requested by the Borrower  after  December 31, 2000 or be on a date
     after December 31, 2001."

     10. Section 5.02 of the Credit Agreement is deleted in its entirety and the
following is substituted in lieu thereof:

          "SECTION 5.02. Negative Covenants.  On and after September 1, 1998 and
     so long as any Advance  shall  remain  unpaid or any Lender  shall have any
     Commitment  hereunder,  the  Borrower  will not,  unless the Lenders  shall
     otherwise consent in writing:

               (a) Liens,  etc.  Create or suffer to exist, or permit any of its
          Subsidiaries to create or suffer to exist, any lien, security interest
          or other  charge or  encumbrance,  or any other  type of  preferential
          arrangement,  upon or with respect to any of its  properties,  whether
          now owned or  hereafter  acquired,  or  assign,  or permit  any of its
          Subsidiaries to assign,  any right to receive income,  in each case to
          secure any Debt of any Person, other than:

                    (i)  purchase   money  liens  or  purchase   money  security
               interests  upon  or in  any  property  acquired  or  held  by the
               Borrower or any Subsidiary in the ordinary  course of business to
               secure  the  purchase   price  of  such  property  or  to  secure
               indebtedness  incurred  solely for the purpose of  financing  the
               acquisition of such property;

                    (ii) liens or security  interests  existing on such property
               at the time of its  acquisition  (other  than  any  such  lien or
               security interest created in contemplation of such acquisition);

                    (iii) liens for taxes, assessments and government charges or
               levies  to the  extent  not  required  to be paid  under  Section
               5.01(b) hereof;

                    (iv)   liens   imposed  by  law,   such  as   materialmen's,
               mechanics',  carriers', workmen's and repairmen's liens and other
               similar liens arising in the ordinary course of business securing
               obligations  that are not  overdue  for a period  of more than 30
               days;

                    (v) pledges or deposits to secure obligations under workers'
               compensation  laws or similar  legislation or to secure public or
               statutory obligations;

                    (vi)  easements,  rights  of way and other  encumbrances  on
               title to real  property  that do not render title to the property
               encumbered  thereby  unmarketable or materially  adversely affect
               the use of such property for its present purposes; and

                    (vii) liens incurred or deposits made in the ordinary course
               of business to secure the performance of letters of credit, bids,
               tenders, sales contracts,  leases, surety, appeal and performance
               bonds and other  similar  obligations  not incurred in connection
               with the borrowing of money;

          provided,  that the  aggregate  principal  amount of the  Debt,  other
          indebtedness,  taxes,  assessments,  governmental charges or levies or
          other obligations  secured by the liens or security interests referred
          to in clauses  (i) through  (vii) of this  Section  5.02(a)  shall not
          exceed $45,000,000 in the aggregate at any time outstanding.

               (b)  Accounting  Changes.  Make or  permit,  or permit any of its
          Subsidiaries to make or permit,  any change in accounting  policies or
          reporting   practices,   except  as  allowed  by  generally   accepted
          accounting principles."

     11. Unless otherwise  provided herein,  any term in initial capital letters
or all  capital  letters  used as a defined  term but not  defined in this First
Amendment shall have the meaning set forth in the Credit Agreement.

     12.  Except as  modified  herein,  all terms and  conditions  of the Credit
Agreement shall remain in full force and effect.

     13. This First  Amendment shall be governed by, and construed in accordance

<PAGE>   4


with, the laws of the State of New York.

     14. This First Amendment may be executed in any number of counterparts  and
by  different  parties  hereto in separate  counterparts,  each of which when so
executed  shall be deemed an  original  and all of which  taken  together  shall
constitute one and the same agreement. Delivery of any executed counterpart of a
signature  page to this First  Amendment  by  telecopier  shall be  effective as
delivery of a manually executed counterpart of this First Amendment.

     IN WITNESS WHEREOF,  the parties hereto have caused this First Amendment to
be executed by their duly authorized representatives effective as of the day and
year first above written.


MEMC ELECTRONIC MATERIALS, INC., as Borrower


By: /s/ Kenneth L. Young
    -----------------------------------
      Name:  Kenneth L. Young
      Title: Treasurer


HULS AG, as Agent


By: /s/ Georg Muller
    -----------------------------------
      Name:  Georg Muller
      Title:


By: /s/ Jurgen Buchsteiner
    -----------------------------------
      Name:  Jurgen Buchsteiner
      Title:


HULS AG, as the sole Lender


By: /s/ Georg Muller
    -----------------------------------
      Name:  Georg Muller
      Title:


By: /s/ Jurgen Buchsteiner
    -----------------------------------
      Name: Jurgen Buchsteiner
      Title:

<PAGE>   1
                                                                EXHIBIT 10-SS(1)

                       FIRST AMENDMENT TO CREDIT AGREEMENT

                  This First Amendment to Credit Agreement  ("First  Amendment")
is effective as of September 1, 1998 between MEMC ELECTRONIC MATERIALS,  INC., a
Delaware  corporation  ("Borrower"),  as the  Borrower,  and HULS AG, a  company
formed under the laws of the Federal Republic of Germany  ("Huls"),  as the sole
Lender and as Agent.

                                    Recitals

     WHEREAS,  Borrower  and Huls entered  into a Credit  Agreement  dated as of
December  22,  1995 (the  "Credit  Agreement")  pursuant to which Huls agreed to
extend up to Yen 1,000,000,000 of credit to Borrower on a term basis;

     WHEREAS,  Borrower,  Huls and  certain  affiliates  of Huls have  agreed to
extend additional  credit to Borrower and to restructure the existing  financing
provided by Huls and its affiliates to Borrower, and

     WHEREAS, as part of such restructuring,  Borrower and Huls desire to change
the interest rate payable by Borrower to Huls under the Credit Agreement.

     NOW THEREFORE,  in consideration  of the foregoing  premises and the mutual
covenants and conditions hereinafter set forth, the parties agree as follows:

     1. The  definitions  of  "Applicable  Margin",  "Base  Rate",  "Performance
Level",  "Performance Level I", "Performance Level II",  "Performance Level III"
and  "Performance  Level IV" in Section 1.01 of the Credit  Agreement are hereby
deleted in their entirety.

     2. The following  definitions  are hereby  inserted in proper  alphabetical
order into Section 1.01 of the Credit Agreement:

          "Applicable  Spread" means a percentage  per annum equal to the excess
     of (a) the Bloomberg  fair market  sector  curves  (adjusted for the chosen
     interest  rate method)  applicable  two business  days prior to the Initial
     Termination Date to a B3 rated industrial  borrower for the period from the
     Initial  Termination  Date  through the latest  possible  Termination  Date
     (taking into account, if applicable, the latest Extension Termination Date)
     over (b) the corresponding Swap Rate for such period.

          "Extension Certificate" has the meaning specified in Section 2.14.

          "Extension  Period Interest Rate" means two business days prior to the
     Initial Termination Date, (a) either the British Bankers' Association (BBA)
     LIBOR rate (as shown on the Reuters page FRBD or comparable  pages) for the
     12-month  period or the Swap Rate for the  24-month  period or the 36-month
     period  commencing from the Initial  Termination  Date as follows:  (i) the
     36-month period for Advances  subject to an Initial  Termination Date on or
     prior to December 31, 1998, (ii) the 24-month  period for Advances  subject
     to an Initial  Termination  Date on or prior to December 31, 1999, or (iii)
     the 12-month period for all other Advances, plus (b) the Applicable Spread.

          "Extension Request Notice" has the meaning set forth in Section 2.14.

          "Extension  Termination Date", if any, means the earlier of (a) either
     (i) the first anniversary of the Initial Termination Date, or (ii) if there
     has been an earlier  applicable  Extension  Termination Date on or prior to
     December  31,  1999,  the  first   anniversary  of  such  prior   Extension
     Termination  Date,  or  (iii)  if  there  has  been an  earlier  applicable
     Extension  Termination  Date  after  December  31,  1999  and on or  before
     December  31,  2000,  the  first   anniversary  of  such  prior   Extension
     Termination  Date  and (b) the  termination  in  whole  of the  Commitments
     pursuant to Section  6.01;  provided,  that in no event shall an  Extension
     Termination Date be after December 31, 2001.

          "Initial Termination Date" for any Advance means December 22, 2001.

          "Replacement Financing Arrangement" means a financing arrangement with
     any  Person who is not an  Affiliate  of the  Borrower  or the Agent or any
     Lender on  substantially  the terms which would apply hereunder  during the
     period from the then  applicable  Termination  Date to the latest  possible
     Extension  Termination  Date,  provided  that  the  interest  rate  of such
     Replacement  Financing  Arrangement  shall be no higher than the  Extension
     Period Interest Rate and, if no lesser interest rate is available, shall be
     the Extension Period Interest Rate.

          "Swap Rate" means the US-Dollar  denominated  interbank  interest rate
     swap  rates/LIBOR  offered  rates as shown on  Reuters  page ICAP and other
     comparable  brokerage  pages,  adjusted for the chosen interest rate method
     (annual/semi-annual compounding, etc.).

     3. The definition of "Change of Control Date" in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Change of Control  Date" means the date of  occurrence of a Change of
     Control;  provided,  that if such  occurrence  is on or prior to January 1,
     2001, the occurrence shall be deemed to have occurred on January 1, 2001.
<PAGE>   2

     4. The  definition  of  "Eligible  Assignee"  in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Eligible  Assignee"  means any Person approved by all of the Lenders;
     provided,  however,  that neither the Borrower  nor any  Subsidiary  of the
     Borrower shall qualify as an Eligible Assignee.

     5. The  definition of  "Termination  Date" set forth in Section 1.01 of the
Credit  Agreement  is  hereby  deleted  in its  entirety  and the  following  is
substituted in lieu thereof:

          "Termination  Date"  means  the  earlier  of (a)  either  the  Initial
     Termination Date or, if applicable,  the Extension Termination Date and (b)
     the termination in whole of the Commitments pursuant to Section 6.01.

     6. Section 2.03 of the Credit Agreement shall be amended as follows: in the
fifth line, "1/8 of 1%" is hereby deleted and "1/4 of 1%" is substituted in lieu
thereof.

     7.  Section  2.05(a)  of the  Credit  Agreement  is hereby  deleted  in its
entirety and the following is substituted in lieu thereof:

          "(a)  Interest on the  Advances.  From  September 1, 1998,  until such
     principal  amount shall be paid in full, the Borrower shall pay interest on
     the unpaid principal  amount of the Advances,  if any, which interest shall
     be payable  semiannually,  at an  interest  rate per annum equal to 4.705%;
     provided,  however,  that, if the Initial  Termination  Date is on or after
     January 1, 2001, as of the date occurring 45 Business Days after the Change
     of Control  Date,  the  interest  rate per annum shall be the higher of (x)
     4.705% and (y) the rate  determined  under clause (a) of the  definition of
     Extension Period Interest Rate, determined as of the Change of Control Date
     (rather than the Initial  Termination  Date),  plus the Applicable  Spread;
     provided,  that  in  the  event  of an  extension  of the  then  applicable
     Termination Date to the Extension Termination Date pursuant to Section 2.14
     hereto,  from  the  then  applicable  Termination  Date  to  the  Extension
     Termination  Date,  the  interest  rate  per  annum  shall  be equal to the
     Extension Period Interest Rate."

     8. Section 2.06  (Interest  Rate  Determination  Upon Change of Control) is
hereby deleted in its entirety and the following is substituted in lieu thereof:
"SECTION 2.06. RESERVED."

     9. The  following  Section 2.14 is hereby added at the end of Article II of
the Credit Agreement:

          "SECTION 2.14. Extension. If the then applicable Termination Date is a
     date on or before  December  31, 2000 and the  Borrower may desire that the
     Lenders  extend  the  then  applicable  Termination  Date to the  Extension
     Termination  Date,  then (a) the Borrower shall give written notice of said
     fact (the "Extension Request Notice") to the Agent and the Lenders no later
     than four (4) months before the  Termination  Date,  (b) the Borrower shall
     use its best  efforts  to obtain and enter into on or before the date which
     is two  months  prior  to the  Termination  Date  a  Replacement  Financing
     Arrangement  and  (c)  if  the  Borrower  shall  not  have  entered  into a
     Replacement Financing Arrangement on or before the date which is two months
     prior to the Termination  Date, the Borrower shall deliver to the Agent and
     the Lenders a certificate of the Borrower (the "Extension Certificate") (x)
     certifying  that the Borrower has not entered into a Replacement  Financing
     Arrangement, but the Borrower used its best efforts to do so as required by
     clause (b) and setting forth such evidence and back-up  detail as necessary
     to demonstrate the efforts made,  including a written letter from each bank
     from which a Replacement  Financing  Arrangement  as required by clause (b)
     was  requested,  indicating  that Borrower made such a request and that the
     request  was  denied,  and (y)  requesting  that  the  Termination  Date be
     extended to the Extension  Termination  Date. For purposes of this Section,
     the Borrower  shall be deemed to have complied with the  requirement to use
     its "best  efforts"  by  requesting  from and,  if  applicable,  diligently
     negotiating a Replacement  Financing  Arrangement as required by clause (b)
     with each of three (3) commercial  banks that are nationally  recognized in
     the United States and each have total assets in excess of  $20,000,000,000.
     The Agent shall have the right to designate,  within ten (10) Business Days
     after  receipt  of an  Extension  Request  Notice,  one of the three  banks
     referred  to in the  preceding  sentence.  For  purposes  of this  Section,
     diligent  negotiation  shall mean  negotiation  in good  faith and  without
     denial or unreasonable delay of any reasonable request by any such bank for
     information in connection with its consideration of providing a Replacement
     Financing  Arrangement  to Borrower.  For the  avoidance of doubt,  nothing
     herein is  intended  to  prevent  Borrower  from  obtaining  a  Replacement
     Financing  Arrangement  on terms  equal to or better  than  those  provided
     hereunder.

          Following receipt of the Extension  Certificate,  the Agent and/or the
     Lenders  shall have the right  (without any  obligation to do so) to obtain
     for the Borrower a Replacement  Financing  Arrangement on terms equal to or
     better than those provided hereunder.

          If the Borrower has (a) delivered the Extension  Request Notice within
     the time period  specified  above,  (b) used its best efforts to obtain and
    
<PAGE>   3
     enter into a Replacement  Financing Arrangement and delivered the Extension
     Certificate within the time period specified above and (c) not unreasonably
     or in bad faith refused to enter into a Replacement  Financing  Arrangement
     (with terms equal to or better than those provided  hereunder) obtained for
     the Borrower by the Agent or any of the Lenders  pursuant to the  preceding
     paragraph,  the  Termination  Date  shall  be  extended  to  the  Extension
     Termination  Date  and the  interest  rate  shall be the  Extension  Period
     Interest  Rate.  The Agent shall provide the Borrower with a written notice
     setting forth the Extension Period Interest Rate.

          The Borrower  shall be  responsible  for the payment of any  customary
     commitment  fee and other fees in connection  with  obtaining a Replacement
     Financing Arrangement.

          For the avoidance of doubt, in no event shall an Extension Termination
     Date be requested by the Borrower  after  December 31, 2000 or be on a date
     after December 31, 2001."

     10. Section 5.02 of the Credit Agreement is deleted in its entirety and the
following is substituted in lieu thereof:

          "SECTION 5.02. Negative Covenants.  On and after September 1, 1998 and
     so long as any Advance  shall  remain  unpaid or any Lender  shall have any
     Commitment  hereunder,  the  Borrower  will not,  unless the Lenders  shall
     otherwise consent in writing:

               (a) Liens,  etc.  Create or suffer to exist, or permit any of its
          Subsidiaries to create or suffer to exist, any lien, security interest
          or other  charge or  encumbrance,  or any other  type of  preferential
          arrangement,  upon or with respect to any of its  properties,  whether
          now owned or  hereafter  acquired,  or  assign,  or permit  any of its
          Subsidiaries to assign,  any right to receive income,  in each case to
          secure any Debt of any Person, other than:

                    (i)  purchase   money  liens  or  purchase   money  security
               interests  upon  or in  any  property  acquired  or  held  by the
               Borrower or any Subsidiary in the ordinary  course of business to
               secure  the  purchase   price  of  such  property  or  to  secure
               indebtedness  incurred  solely for the purpose of  financing  the
               acquisition of such property;

                    (ii) liens or security  interests  existing on such property
               at the time of its  acquisition  (other  than  any  such  lien or
               security interest created in contemplation of such acquisition);

                    (iii) liens for taxes, assessments and government charges or
               levies  to the  extent  not  required  to be paid  under  Section
               5.01(b) hereof;

                    (iv)   liens   imposed  by  law,   such  as   materialmen's,
               mechanics',  carriers', workmen's and repairmen's liens and other
               similar liens arising in the ordinary course of business securing
               obligations  that are not  overdue  for a period  of more than 30
               days;

                    (v) pledges or deposits to secure obligations under workers'
               compensation  laws or similar  legislation or to secure public or
               statutory obligations;

                    (vi)  easements,  rights  of way and other  encumbrances  on
               title to real  property  that do not render title to the property
               encumbered  thereby  unmarketable or materially  adversely affect
               the use of such property for its present purposes; and

                    (vii) liens incurred or deposits made in the ordinary course
               of business to secure the performance of letters of credit, bids,
               tenders, sales contracts,  leases, surety, appeal and performance
               bonds and other  similar  obligations  not incurred in connection
               with the borrowing of money;

          provided,  that the  aggregate  principal  amount of the  Debt,  other
          indebtedness,  taxes,  assessments,  governmental charges or levies or
          other obligations  secured by the liens or security interests referred
          to in clauses  (i) through  (vii) of this  Section  5.02(a)  shall not
          exceed $45,000,000 in the aggregate at any time outstanding.

               (b)  Accounting  Changes.  Make or  permit,  or permit any of its
          Subsidiaries to make or permit,  any change in accounting  policies or
          reporting   practices,   except  as  allowed  by  generally   accepted
          accounting principles."

     11. Unless otherwise  provided herein,  any term in initial capital letters
or all  capital  letters  used as a defined  term but not  defined in this First
Amendment shall have the meaning set forth in the Credit Agreement.

     12.  Except as  modified  herein,  all terms and  conditions  of the Credit
Agreement shall remain in full force and effect.
    
     13. This First  Amendment shall be governed by, and construed in accordance
<PAGE>   4

     
with, the laws of the State of New York.

     14. This First Amendment may be executed in any number of counterparts  and
by  different  parties  hereto in separate  counterparts,  each of which when so
executed  shall be deemed an  original  and all of which  taken  together  shall
constitute one and the same agreement. Delivery of any executed counterpart of a
signature  page to this First  Amendment  by  telecopier  shall be  effective as
delivery of a manually executed counterpart of this First Amendment.

     IN WITNESS WHEREOF,  the parties hereto have caused this First Amendment to
be executed by their duly authorized representatives effective as of the day and
year first above written.


MEMC ELECTRONIC MATERIALS, INC., as Borrower


By: /s/ Kenneth L. Young
    -----------------------------------
      Name:  Kenneth L. Young
      Title: Treasurer


HULS AG, as Agent


By: /s/ Georg Muller
    -----------------------------------
      Name:  Georg Muller
      Title:


By: /s/ Jurgen Buchsteiner
    -----------------------------------
      Name:  Jurgen Buchsteiner
      Title:


HULS AG, as the sole Lender


By: /s/ Georg Muller
    -----------------------------------
      Name:  Georg Muller
      Title:


By: /s/ Jurgen Buchsteiner
    -----------------------------------
      Name: Jurgen Buchsteiner
      Title:

<PAGE>   1
                                                                EXHIBIT 10-TT(1)

                       FIRST AMENDMENT TO CREDIT AGREEMENT

     This First Amendment to Credit Agreement  ("First  Amendment") is effective
as of  September 1, 1998 between  MEMC  ELECTRONIC  MATERIALS,  INC., a Delaware
corporation  ("Borrower"),  as the Borrower, and HULS AG, a company formed under
the laws of the Federal Republic of Germany ("Huls"),  as the sole Lender and as
Agent.

                                    Recitals

     WHEREAS,  Borrower  and Huls entered  into a Credit  Agreement  dated as of
December  22,  1995 (the  "Credit  Agreement")  pursuant to which Huls agreed to
extend up to Yen 1,000,000,000 of credit to Borrower on a term basis;

     WHEREAS,  Borrower,  Huls and  certain  affiliates  of Huls have  agreed to
extend additional  credit to Borrower and to restructure the existing  financing
provided by Huls and its affiliates to Borrower, and

     WHEREAS, as part of such restructuring,  Borrower and Huls desire to change
the interest rate payable by Borrower to Huls under the Credit Agreement.

     NOW THEREFORE,  in consideration  of the foregoing  premises and the mutual
covenants and conditions hereinafter set forth, the parties agree as follows:

     1. The  definitions  of  "Applicable  Margin",  "Base  Rate",  "Performance
Level",  "Performance Level I", "Performance Level II",  "Performance Level III"
and  "Performance  Level IV" in Section 1.01 of the Credit  Agreement are hereby
deleted in their entirety.

     2. The following  definitions  are hereby  inserted in proper  alphabetical
order into Section 1.01 of the Credit Agreement:

          "Applicable  Spread" means a percentage  per annum equal to the excess
     of (a) the Bloomberg  fair market  sector  curves  (adjusted for the chosen
     interest  rate method)  applicable  two business  days prior to the Initial
     Termination Date to a B3 rated industrial  borrower for the period from the
     Initial  Termination  Date  through the latest  possible  Termination  Date
     (taking into account, if applicable, the latest Extension Termination Date)
     over (b) the corresponding Swap Rate for such period.

          "Extension Certificate" has the meaning specified in Section 2.14.

          "Extension  Period Interest Rate" means two business days prior to the
     Initial Termination Date, (a) either the British Bankers' Association (BBA)
     LIBOR rate (as shown on the Reuters page FRBD or comparable  pages) for the
     12-month  period or the Swap Rate for the  24-month  period or the 36-month
     period  commencing from the Initial  Termination  Date as follows:  (i) the
     36-month period for Advances  subject to an Initial  Termination Date on or
     prior to December 31, 1998, (ii) the 24-month  period for Advances  subject
     to an Initial  Termination  Date on or prior to December 31, 1999, or (iii)
     the 12-month period for all other Advances, plus (b) the Applicable Spread.

          "Extension Request Notice" has the meaning set forth in Section 2.14.

          "Extension  Termination Date", if any, means the earlier of (a) either
     (i) the first anniversary of the Initial Termination Date, or (ii) if there
     has been an earlier  applicable  Extension  Termination Date on or prior to
     December  31,  1999,  the  first   anniversary  of  such  prior   Extension
     Termination  Date,  or  (iii)  if  there  has  been an  earlier  applicable
     Extension  Termination  Date  after  December  31,  1999  and on or  before
     December  31,  2000,  the  first   anniversary  of  such  prior   Extension
     Termination  Date  and (b) the  termination  in  whole  of the  Commitments
     pursuant to Section  6.01;  provided,  that in no event shall an  Extension
     Termination Date be after December 31, 2001.

          "Initial Termination Date" for any Advance means December 22, 2002.

          "Replacement Financing Arrangement" means a financing arrangement with
     any  Person who is not an  Affiliate  of the  Borrower  or the Agent or any
     Lender on  substantially  the terms which would apply hereunder  during the
     period from the then  applicable  Termination  Date to the latest  possible
     Extension  Termination  Date,  provided  that  the  interest  rate  of such
     Replacement  Financing  Arrangement  shall be no higher than the  Extension
     Period Interest Rate and, if no lesser interest rate is available, shall be
     the Extension Period Interest Rate.

          "Swap Rate" means the US-Dollar  denominated  interbank  interest rate
     swap  rates/LIBOR  offered  rates as shown on  Reuters  page ICAP and other
     comparable  brokerage  pages,  adjusted for the chosen interest rate method
     (annual/semi-annual compounding, etc.).

     3. The definition of "Change of Control Date" in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Change of Control  Date" means the date of  occurrence of a Change of
     Control;  provided,  that if such  occurrence  is on or prior to January 1,
     2001, the occurrence shall be deemed to have occurred on January 1, 2001.
<PAGE>   2

     4. The  definition  of  "Eligible  Assignee"  in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Eligible  Assignee"  means any Person approved by all of the Lenders;
     provided,  however,  that neither the Borrower  nor any  Subsidiary  of the
     Borrower shall qualify as an Eligible Assignee.

     5. The  definition of  "Termination  Date" set forth in Section 1.01 of the
Credit  Agreement  is  hereby  deleted  in its  entirety  and the  following  is
substituted in lieu thereof:

          "Termination  Date"  means  the  earlier  of (a)  either  the  Initial
     Termination Date or, if applicable,  the Extension Termination Date and (b)
     the termination in whole of the Commitments pursuant to Section 6.01.

     6. Section 2.03 of the Credit Agreement shall be amended as follows: in the
fifth line, "1/8 of 1%" is hereby deleted and "1/4 of 1%" is substituted in lieu
thereof.

     7.  Section  2.05(a)  of the  Credit  Agreement  is hereby  deleted  in its
entirety and the following is substituted in lieu thereof:

          "(a)  Interest on the  Advances.  From  September 1, 1998,  until such
     principal  amount shall be paid in full, the Borrower shall pay interest on
     the unpaid principal  amount of the Advances,  if any, which interest shall
     be payable  semiannually,  at an  interest  rate per annum equal to 5.290%;
     provided,  however,  that, if the Initial  Termination  Date is on or after
     January 1, 2001, as of the date occurring 45 Business Days after the Change
     of Control  Date,  the  interest  rate per annum shall be the higher of (x)
     5.290% and (y) the rate  determined  under clause (a) of the  definition of
     Extension Period Interest Rate, determined as of the Change of Control Date
     (rather than the Initial  Termination  Date),  plus the Applicable  Spread;
     provided,  that  in  the  event  of an  extension  of the  then  applicable
     Termination Date to the Extension Termination Date pursuant to Section 2.14
     hereto,  from  the  then  applicable  Termination  Date  to  the  Extension
     Termination  Date,  the  interest  rate  per  annum  shall  be equal to the
     Extension Period Interest Rate."

     8. Section 2.06  (Interest  Rate  Determination  Upon Change of Control) is
hereby deleted in its entirety and the following is substituted in lieu thereof:
"SECTION 2.06. RESERVED."

     9. The  following  Section 2.14 is hereby added at the end of Article II of
the Credit Agreement:

          "SECTION 2.14. Extension. If the then applicable Termination Date is a
     date on or before  December  31, 2000 and the  Borrower may desire that the
     Lenders  extend  the  then  applicable  Termination  Date to the  Extension
     Termination  Date,  then (a) the Borrower shall give written notice of said
     fact (the "Extension Request Notice") to the Agent and the Lenders no later
     than four (4) months before the  Termination  Date,  (b) the Borrower shall
     use its best  efforts  to obtain and enter into on or before the date which
     is two  months  prior  to the  Termination  Date  a  Replacement  Financing
     Arrangement  and  (c)  if  the  Borrower  shall  not  have  entered  into a
     Replacement Financing Arrangement on or before the date which is two months
     prior to the Termination  Date, the Borrower shall deliver to the Agent and
     the Lenders a certificate of the Borrower (the "Extension Certificate") (x)
     certifying  that the Borrower has not entered into a Replacement  Financing
     Arrangement, but the Borrower used its best efforts to do so as required by
     clause (b) and setting forth such evidence and back-up  detail as necessary
     to demonstrate the efforts made,  including a written letter from each bank
     from which a Replacement  Financing  Arrangement  as required by clause (b)
     was  requested,  indicating  that Borrower made such a request and that the
     request  was  denied,  and (y)  requesting  that  the  Termination  Date be
     extended to the Extension  Termination  Date. For purposes of this Section,
     the Borrower  shall be deemed to have complied with the  requirement to use
     its "best  efforts"  by  requesting  from and,  if  applicable,  diligently
     negotiating a Replacement  Financing  Arrangement as required by clause (b)
     with each of three (3) commercial  banks that are nationally  recognized in
     the United States and each have total assets in excess of  $20,000,000,000.
     The Agent shall have the right to designate,  within ten (10) Business Days
     after  receipt  of an  Extension  Request  Notice,  one of the three  banks
     referred  to in the  preceding  sentence.  For  purposes  of this  Section,
     diligent  negotiation  shall mean  negotiation  in good  faith and  without
     denial or unreasonable delay of any reasonable request by any such bank for
     information in connection with its consideration of providing a Replacement
     Financing  Arrangement  to Borrower.  For the  avoidance of doubt,  nothing
     herein is  intended  to  prevent  Borrower  from  obtaining  a  Replacement
     Financing  Arrangement  on terms  equal to or better  than  those  provided
     hereunder.

          Following receipt of the Extension  Certificate,  the Agent and/or the
     Lenders  shall have the right  (without any  obligation to do so) to obtain
     for the Borrower a Replacement  Financing  Arrangement on terms equal to or
     better than those provided hereunder.

          If the Borrower has (a) delivered the Extension  Request Notice within
     the time period  specified  above,  (b) used its best efforts to obtain and
     


<PAGE>   3

     enter into a Replacement  Financing Arrangement and delivered the Extension
     Certificate within the time period specified above and (c) not unreasonably
     or in bad faith refused to enter into a Replacement  Financing  Arrangement
     (with terms equal to or better than those provided  hereunder) obtained for
     the Borrower by the Agent or any of the Lenders  pursuant to the  preceding
     paragraph,  the  Termination  Date  shall  be  extended  to  the  Extension
     Termination  Date  and the  interest  rate  shall be the  Extension  Period
     Interest  Rate.  The Agent shall provide the Borrower with a written notice
     setting forth the Extension Period Interest Rate.

          The Borrower  shall be  responsible  for the payment of any  customary
     commitment  fee and other fees in connection  with  obtaining a Replacement
     Financing Arrangement.

          For the avoidance of doubt, in no event shall an Extension Termination
     Date be requested by the Borrower  after  December 31, 2000 or be on a date
     after December 31, 2001."

     10. Section 5.02 of the Credit Agreement is deleted in its entirety and the
following is substituted in lieu thereof:

          "SECTION 5.02. Negative Covenants.  On and after September 1, 1998 and
     so long as any Advance  shall  remain  unpaid or any Lender  shall have any
     Commitment  hereunder,  the  Borrower  will not,  unless the Lenders  shall
     otherwise consent in writing:

               (a) Liens,  etc.  Create or suffer to exist, or permit any of its
          Subsidiaries to create or suffer to exist, any lien, security interest
          or other  charge or  encumbrance,  or any other  type of  preferential
          arrangement,  upon or with respect to any of its  properties,  whether
          now owned or  hereafter  acquired,  or  assign,  or permit  any of its
          Subsidiaries to assign,  any right to receive income,  in each case to
          secure any Debt of any Person, other than:

                    (i)  purchase   money  liens  or  purchase   money  security
               interests  upon  or in  any  property  acquired  or  held  by the
               Borrower or any Subsidiary in the ordinary  course of business to
               secure  the  purchase   price  of  such  property  or  to  secure
               indebtedness  incurred  solely for the purpose of  financing  the
               acquisition of such property;

                    (ii) liens or security  interests  existing on such property
               at the time of its  acquisition  (other  than  any  such  lien or
               security interest created in contemplation of such acquisition);

                    (iii) liens for taxes, assessments and government charges or
               levies  to the  extent  not  required  to be paid  under  Section
               5.01(b) hereof;

                    (iv)   liens   imposed  by  law,   such  as   materialmen's,
               mechanics',  carriers', workmen's and repairmen's liens and other
               similar liens arising in the ordinary course of business securing
               obligations  that are not  overdue  for a period  of more than 30
               days;

                    (v) pledges or deposits to secure obligations under workers'
               compensation  laws or similar  legislation or to secure public or
               statutory obligations;

                    (vi)  easements,  rights  of way and other  encumbrances  on
               title to real  property  that do not render title to the property
               encumbered  thereby  unmarketable or materially  adversely affect
               the use of such property for its present purposes; and

                    (vii) liens incurred or deposits made in the ordinary course
               of business to secure the performance of letters of credit, bids,
               tenders, sales contracts,  leases, surety, appeal and performance
               bonds and other  similar  obligations  not incurred in connection
               with the borrowing of money;

          provided,  that the  aggregate  principal  amount of the  Debt,  other
          indebtedness,  taxes,  assessments,  governmental charges or levies or
          other obligations  secured by the liens or security interests referred
          to in clauses  (i) through  (vii) of this  Section  5.02(a)  shall not
          exceed $45,000,000 in the aggregate at any time outstanding.

               (b)  Accounting  Changes.  Make or  permit,  or permit any of its
          Subsidiaries to make or permit,  any change in accounting  policies or
          reporting   practices,   except  as  allowed  by  generally   accepted
          accounting principles."

     11. Unless otherwise  provided herein,  any term in initial capital letters
or all  capital  letters  used as a defined  term but not  defined in this First
Amendment shall have the meaning set forth in the Credit Agreement.

     12.  Except as  modified  herein,  all terms and  conditions  of the Credit
Agreement shall remain in full force and effect.

     13. This First  Amendment shall be governed by, and construed in accordance
<PAGE>   4


with, the laws of the State of New York.

     14. This First Amendment may be executed in any number of counterparts  and
by  different  parties  hereto in separate  counterparts,  each of which when so
executed  shall be deemed an  original  and all of which  taken  together  shall
constitute one and the same agreement. Delivery of any executed counterpart of a
signature  page to this First  Amendment  by  telecopier  shall be  effective as
delivery of a manually executed counterpart of this First Amendment.

     IN WITNESS WHEREOF,  the parties hereto have caused this First Amendment to
be executed by their duly authorized representatives effective as of the day and
year first above written.


MEMC ELECTRONIC MATERIALS, INC., as Borrower


By: /s/ Kenneth L. Young
    -----------------------------------
      Name:  Kenneth L. Young
      Title: Treasurer


HULS AG, as Agent


By: /s/ Georg Muller
    -----------------------------------
      Name:  Georg Muller
      Title:


By: /s/ Jurgen Buchsteiner
    -----------------------------------
      Name:  Jurgen Buchsteiner
      Title:


HULS AG, as the sole Lender


By: /s/ Georg Muller
    -----------------------------------
      Name:  Georg Muller
      Title:


By: /s/ Jurgen Buchsteiner
    -----------------------------------
      Name: Jurgen Buchsteiner
      Title:

<PAGE>   1
                                                               EXHIBIT 10 CCC(1)
                       FIRST AMENDMENT TO CREDIT AGREEMENT

     This First Amendment to Credit Agreement  ("First  Amendment") is effective
as of  September 1, 1998 between  MEMC  ELECTRONIC  MATERIALS,  INC., a Delaware
corporation  ("Borrower"),  as the Borrower, and HULS AG, a company formed under
the laws of the Federal Republic of Germany ("Huls"),  as the sole Lender and as
Agent.

                                    Recitals

     WHEREAS,  Borrower  and Huls entered  into a Credit  Agreement  dated as of
December  1, 1996 (the  "Credit  Agreement")  pursuant  to which Huls  agreed to
extend up to US$75,000,000 of credit to Borrower on a term basis;

     WHEREAS,  Borrower,  Huls and  certain  affiliates  of Huls have  agreed to
extend additional  credit to Borrower and to restructure the existing  financing
provided by Huls and its affiliates to Borrower, and

     WHEREAS, as part of such restructuring,  Borrower and Huls desire to change
the interest rate payable by Borrower to Huls under the Credit Agreement.

     NOW THEREFORE,  in consideration  of the foregoing  premises and the mutual
covenants and conditions hereinafter set forth, the parties agree as follows:

     1. The  definitions  of  "Applicable  Margin",  "Base  Rate",  "Performance
Level",  "Performance Level I", "Performance Level II",  "Performance Level III"
and  "Performance  Level IV" in Section 1.01 of the Credit  Agreement are hereby
deleted in their entirety.

     2. The following  definitions  are hereby  inserted in proper  alphabetical
order into Section 1.01 of the Credit Agreement:

          "Applicable  Spread" means a percentage  per annum equal to the excess
     of (a) the Bloomberg  fair market  sector  curves  (adjusted for the chosen
     interest  rate method)  applicable  two business  days prior to the Initial
     Termination Date to a B3 rated industrial  borrower for the period from the
     Initial  Termination  Date  through the latest  possible  Termination  Date
     (taking into account, if applicable, the latest Extension Termination Date)
     over (b) the corresponding Swap Rate for such period.

          "Extension Certificate" has the meaning specified in Section 2.15.

          "Extension  Period Interest Rate" means two business days prior to the
     Initial Termination Date, (a) either the British Bankers' Association (BBA)
     LIBOR rate (as shown on the Reuters page FRBD or comparable  pages) for the
     12-month  period or the Swap Rate for the  24-month  period or the 36-month
     period  commencing from the Initial  Termination  Date as follows:  (i) the
     36-month period for Advances  subject to an Initial  Termination Date on or
     prior to December 31, 1998, (ii) the 24-month  period for Advances  subject
     to an Initial  Termination  Date on or prior to December 31, 1999, or (iii)
     the 12-month period for all other Advances, plus (b) the Applicable Spread.

          "Extension Request Notice" has the meaning set forth in Section 2.15.

          "Extension  Termination Date", if any, means the earlier of (a) either
     (i) the first anniversary of the Initial Termination Date, or (ii) if there
     has been an earlier  applicable  Extension  Termination Date on or prior to
     December  31,  1999,  the  first   anniversary  of  such  prior   Extension
     Termination  Date,  or  (iii)  if  there  has  been an  earlier  applicable
     Extension  Termination  Date  after  December  31,  1999  and on or  before
     December  31,  2000,  the  first   anniversary  of  such  prior   Extension
     Termination  Date  and (b) the  termination  in  whole  of the  Commitments
     pursuant to Section 2.04 or Section 6.01; provided,  that in no event shall
     an Extension Termination Date be after December 31, 2001.

          "Initial Termination Date" for any Advance means December 1, 2002.

          "Replacement Financing Arrangement" means a financing arrangement with
     any  Person who is not an  Affiliate  of the  Borrower  or the Agent or any
     Lender on  substantially  the terms which would apply hereunder  during the
     period from the then  applicable  Termination  Date to the latest  possible
     Extension  Termination  Date,  provided  that  the  interest  rate  of such
     Replacement  Financing  Arrangement  shall be no higher than the  Extension
     Period Interest Rate and, if no lesser interest rate is available, shall be
     the Extension Period Interest Rate.

          "Swap Rate" means the US-Dollar  denominated  interbank  interest rate
     swap  rates/LIBOR  offered  rates as shown on  Reuters  page ICAP and other
     comparable  brokerage  pages,  adjusted for the chosen interest rate method
     (annual/semi-annual compounding, etc.).

     3. The definition of "Change of Control Date" in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Change of Control  Date" means the date of  occurrence of a Change of
     Control;  provided,  that if such  occurrence  is on or prior to January 1,
     2001, the occurrence shall be deemed to have occurred on January 1, 2001.


<PAGE>   2

     4. The  definition  of  "Eligible  Assignee"  in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Eligible  Assignee"  means any Person approved by all of the Lenders;
     provided,  however,  that neither the Borrower  nor any  Subsidiary  of the
     Borrower shall qualify as an Eligible Assignee.

     5. The  definition of  "Termination  Date" set forth in Section 1.01 of the
Credit  Agreement  is  hereby  deleted  in its  entirety  and the  following  is
substituted in lieu thereof:

          "Termination  Date"  means  the  earlier  of (a)  either  the  Initial
     Termination Date or, if applicable,  the Extension Termination Date and (b)
     the  termination  in whole of the  Commitments  pursuant to Section 2.04 or
     Section 6.01.

     6. Section 2.03 of the Credit Agreement shall be amended as follows: in the
fifth line, "1/8 of 1%" is hereby deleted and "1/4 of 1%" is substituted in lieu
thereof.

     7.  Section  2.06(a)  of the  Credit  Agreement  is hereby  deleted  in its
entirety and the following is substituted in lieu thereof:

          "(a)  Interest on the  Advances.  From  September 1, 1998,  until such
     principal  amount shall be paid in full, the Borrower shall pay interest on
     the unpaid principal  amount of the Advances,  if any, which interest shall
     be  payable  semiannually,  at an  interest  rate  per  annum  equal to the
     applicable  rate for each  Advance as listed on Schedule A hereto under the
     heading  "Interest  Rate";   provided,   however,   that,  if  the  Initial
     Termination  Date is on or after January 1, 2001, as of the date  occurring
     45 Business  Days after the Change of Control  Date,  the interest rate per
     annum shall be the higher of (x) the  applicable  rate for each  Advance as
     listed on Schedule A hereto under the heading  "Interest  Rate" and (y) the
     rate  determined  under clause (a) of the  definition  of Extension  Period
     Interest Rate, determined as of the Change of Control Date (rather than the
     Initial  Termination Date), plus the Applicable Spread;  provided,  that in
     the event of an extension of the then  applicable  Termination  Date to the
     Extension  Termination Date pursuant to Section 2.15 hereto,  from the then
     applicable Termination Date to the Extension Termination Date, the interest
     rate per annum shall be equal to the Extension Period Interest Rate."

     8. Section 2.07  (Interest  Rate  Determination  Upon Change of Control) is
hereby deleted in its entirety and the following is substituted in lieu thereof:
"SECTION 2.07. RESERVED."

     9. The  following  Section 2.15 is hereby added at the end of Article II of
the Credit Agreement:

          "SECTION 2.15. Extension. If the then applicable Termination Date is a
     date on or before  December  31, 2000 and the  Borrower may desire that the
     Lenders  extend  the  then  applicable  Termination  Date to the  Extension
     Termination  Date,  then (a) the Borrower shall give written notice of said
     fact (the "Extension Request Notice") to the Agent and the Lenders no later
     than four (4) months before the  Termination  Date,  (b) the Borrower shall
     use its best  efforts  to obtain and enter into on or before the date which
     is two  months  prior  to the  Termination  Date  a  Replacement  Financing
     Arrangement  and  (c)  if  the  Borrower  shall  not  have  entered  into a
     Replacement Financing Arrangement on or before the date which is two months
     prior to the Termination  Date, the Borrower shall deliver to the Agent and
     the Lenders a certificate of the Borrower (the "Extension Certificate") (x)
     certifying  that the Borrower has not entered into a Replacement  Financing
     Arrangement, but the Borrower used its best efforts to do so as required by
     clause (b) and setting forth such evidence and back-up  detail as necessary
     to demonstrate the efforts made,  including a written letter from each bank
     from which a Replacement  Financing  Arrangement  as required by clause (b)
     was  requested,  indicating  that Borrower made such a request and that the
     request  was  denied,  and (y)  requesting  that  the  Termination  Date be
     extended to the Extension  Termination  Date. For purposes of this Section,
     the Borrower  shall be deemed to have complied with the  requirement to use
     its "best  efforts"  by  requesting  from and,  if  applicable,  diligently
     negotiating a Replacement  Financing  Arrangement as required by clause (b)
     with each of three (3) commercial  banks that are nationally  recognized in
     the United States and each have total assets in excess of  $20,000,000,000.
     The Agent shall have the right to designate,  within ten (10) Business Days
     after  receipt  of an  Extension  Request  Notice,  one of the three  banks
     referred  to in the  preceding  sentence.  For  purposes  of this  Section,
     diligent  negotiation  shall mean  negotiation  in good  faith and  without
     denial or unreasonable delay of any reasonable request by any such bank for
     information in connection with its consideration of providing a Replacement
     Financing  Arrangement  to Borrower.  For the  avoidance of doubt,  nothing
     herein is  intended  to  prevent  Borrower  from  obtaining  a  Replacement
     Financing  Arrangement  on terms  equal to or better  than  those  provided
     hereunder.

          Following receipt of the Extension  Certificate,  the Agent and/or the
     Lenders  shall have the right  (without any  obligation to do so) to obtain
     for the Borrower a Replacement  Financing  Arrangement on terms equal to or
     better than those provided hereunder.


<PAGE>   3

          If the Borrower has (a) delivered the Extension  Request Notice within
     the time period  specified  above,  (b) used its best efforts to obtain and
     enter into a Replacement  Financing Arrangement and delivered the Extension
     Certificate within the time period specified above and (c) not unreasonably
     or in bad faith refused to enter into a Replacement  Financing  Arrangement
     (with terms equal to or better than those provided  hereunder) obtained for
     the Borrower by the Agent or any of the Lenders  pursuant to the  preceding
     paragraph,  the  Termination  Date  shall  be  extended  to  the  Extension
     Termination  Date  and the  interest  rate  shall be the  Extension  Period
     Interest  Rate.  The Agent shall provide the Borrower with a written notice
     setting forth the Extension Period Interest Rate.

          The Borrower  shall be  responsible  for the payment of any  customary
     commitment  fee and other fees in connection  with  obtaining a Replacement
     Financing Arrangement.

          For the avoidance of doubt, in no event shall an Extension Termination
     Date be requested by the Borrower  after  December 31, 2000 or be on a date
     after December 31, 2001."

          10.  Section  5.02 of the Credit  Agreement is deleted in its entirety
     and the following is substituted in lieu thereof:

               "SECTION 5.02. Negative Covenants. On and after September 1, 1998
          and so long as any Advance  shall  remain  unpaid or any Lender  shall
          have any  Commitment  hereunder,  the  Borrower  will not,  unless the
          Lenders shall otherwise consent in writing:

                    (a) Liens,  etc. Create or suffer to exist, or permit any of
               its Subsidiaries to create or suffer to exist, any lien, security
               interest  or other  charge or  encumbrance,  or any other type of
               preferential  arrangement,  upon  or with  respect  to any of its
               properties,  whether now owned or hereafter acquired,  or assign,
               or permit any of its Subsidiaries to assign, any right to receive
               income,  in each case to  secure  any Debt of any  Person,  other
               than:

                         (i)  purchase  money liens or purchase  money  security
                    interests  upon or in any  property  acquired or held by the
                    Borrower  or  any  Subsidiary  in  the  ordinary  course  of
                    business to secure the purchase price of such property or to
                    secure  indebtedness  incurred  solely  for the  purpose  of
                    financing the acquisition of such property;

                         (ii)  liens  or  security  interests  existing  on such
                    property at the time of its acquisition (other than any such
                    lien or security  interest  created in contemplation of such
                    acquisition);

                         (iii)  liens  for  taxes,  assessments  and  government
                    charges  or levies to the  extent  not  required  to be paid
                    under Section 5.01(b) hereof;

                         (iv)  liens  imposed  by law,  such  as  materialmen's,
                    mechanics',  carriers',  workmen's and repairmen's liens and
                    other  similar  liens  arising  in the  ordinary  course  of
                    business  securing  obligations  that are not  overdue for a
                    period of more than 30 days;

                         (v)  pledges or deposits  to secure  obligations  under
                    workers'  compensation  laws or  similar  legislation  or to
                    secure public or statutory obligations;

                         (vi) easements, rights of way and other encumbrances on
                    title  to real  property  that do not  render  title  to the
                    property  encumbered  thereby   unmarketable  or  materially
                    adversely  affect the use of such  property  for its present
                    purposes; and

                         (vii) liens  incurred or deposits  made in the ordinary
                    course of business to secure the  performance  of letters of
                    credit,  bids,  tenders,  sales contracts,  leases,  surety,
                    appeal and performance  bonds and other similar  obligations
                    not incurred in connection with the borrowing of money;

               provided,  that the aggregate principal amount of the Debt, other
               indebtedness, taxes, assessments,  governmental charges or levies
               or other obligations  secured by the liens or security  interests
               referred to in clauses (i) through (vii) of this Section  5.02(a)
               shall  not  exceed  $45,000,000  in the  aggregate  at  any  time
               outstanding.

                    (b) Accounting Changes. Make or permit, or permit any of its
               Subsidiaries to make or permit, any change in accounting policies
               or reporting  practices,  except as allowed by generally accepted
               accounting principles."

     11. Unless otherwise  provided herein,  any term in initial capital letters

<PAGE>   4

or all  capital  letters  used as a defined  term but not  defined in this First
Amendment shall have the meaning set forth in the Credit Agreement.

     12.  Except as  modified  herein,  all terms and  conditions  of the Credit
Agreement shall remain in full force and effect.

     13. This First  Amendment shall be governed by, and construed in accordance
with, the laws of the State of New York.

     14. This First Amendment may be executed in any number of counterparts  and
by  different  parties  hereto in separate  counterparts,  each of which when so
executed  shall be deemed an  original  and all of which  taken  together  shall
constitute one and the same agreement. Delivery of any executed counterpart of a
signature  page to this First  Amendment  by  telecopier  shall be  effective as
delivery of a manually executed counterpart of this First Amendment.

     IN WITNESS WHEREOF,  the parties hereto have caused this First Amendment to
be executed by their duly authorized representatives effective as of the day and
year first above written.


MEMC ELECTRONIC MATERIALS, INC., as Borrower


By: /s/ Kenneth L. Young
    -----------------------------------
      Name:  Kenneth L. Young
      Title: Treasurer


HULS AG, as Agent


By: /s/ Georg Muller
    -----------------------------------
      Name:  Georg Muller
      Title:


By: /s/ Jurgen Buchsteiner
    -----------------------------------
      Name:  Jurgen Buchsteiner
      Title:


HULS AG, as the sole Lender


By: /s/ Georg Muller
    -----------------------------------
      Name:  Georg Muller
      Title:


By: /s/ Jurgen Buchsteiner
    -----------------------------------
      Name: Jurgen Buchsteiner
      Title:

<PAGE>   5
                                   Schedule A
                                       to
                       First Amendment to Credit Agreement


                         New Interest Rates per Advance

                          (effective September 1, 1998)

Advance Date                  Advance Amount                       Interest Rate
____________                  ______________                       _____________

27 Jan 1997                   $20,000,000                                9.237%

24 Feb 1997                    20,000,000                                9.017%

13 Mar 1997                    20,000,000                                9.262%

 4 Apr 1997                    15,000,000                                9.657%

<PAGE>   1
                                                               EXHIBIT 10 DDD(1)
                       FIRST AMENDMENT TO CREDIT AGREEMENT

     This First Amendment to Credit Agreement  ("First  Amendment") is effective
as of  September 1, 1998 between  MEMC  ELECTRONIC  MATERIALS,  INC., a Delaware
corporation  ("Borrower"),  as the Borrower, and HULS AG, a company formed under
the laws of the Federal Republic of Germany ("Huls"),  as the sole Lender and as
Agent.

                                    Recitals

     WHEREAS,  Borrower  and Huls entered  into a Credit  Agreement  dated as of
December  1, 1996 (the  "Credit  Agreement")  pursuant  to which Huls  agreed to
extend up to US$75,000,000 of credit to Borrower on a term basis;

     WHEREAS,  Borrower,  Huls and  certain  affiliates  of Huls have  agreed to
extend additional  credit to Borrower and to restructure the existing  financing
provided by Huls and its affiliates to Borrower, and

     WHEREAS, as part of such restructuring,  Borrower and Huls desire to change
the interest rate payable by Borrower to Huls under the Credit Agreement.

     NOW THEREFORE,  in consideration  of the foregoing  premises and the mutual
covenants and conditions hereinafter set forth, the parties agree as follows:

     1. The  definitions  of  "Applicable  Margin",  "Base  Rate",  "Performance
Level",  "Performance Level I", "Performance Level II",  "Performance Level III"
and  "Performance  Level IV" in Section 1.01 of the Credit  Agreement are hereby
deleted in their entirety.

     2. The following  definitions  are hereby  inserted in proper  alphabetical
order into Section 1.01 of the Credit Agreement:

          "Applicable  Spread" means a percentage  per annum equal to the excess
     of (a) the Bloomberg  fair market  sector  curves  (adjusted for the chosen
     interest  rate method)  applicable  two business  days prior to the Initial
     Termination Date to a B3 rated industrial  borrower for the period from the
     Initial  Termination  Date  through the latest  possible  Termination  Date
     (taking into account, if applicable, the latest Extension Termination Date)
     over (b) the corresponding Swap Rate for such period.

          "Extension Certificate" has the meaning specified in Section 2.15.

          "Extension  Period Interest Rate" means two business days prior to the
     Initial Termination Date, (a) either the British Bankers' Association (BBA)
     LIBOR rate (as shown on the Reuters page FRBD or comparable  pages) for the
     12-month  period or the Swap Rate for the  24-month  period or the 36-month
     period  commencing from the Initial  Termination  Date as follows:  (i) the
     36-month period for Advances  subject to an Initial  Termination Date on or
     prior to December 31, 1998, (ii) the 24-month  period for Advances  subject
     to an Initial  Termination  Date on or prior to December 31, 1999, or (iii)
     the 12-month period for all other Advances, plus (b) the Applicable Spread.

          "Extension Request Notice" has the meaning set forth in Section 2.15.

          "Extension  Termination Date", if any, means the earlier of (a) either
     (i) the first anniversary of the Initial Termination Date, or (ii) if there
     has been an earlier  applicable  Extension  Termination Date on or prior to
     December  31,  1999,  the  first   anniversary  of  such  prior   Extension
     Termination  Date,  or  (iii)  if  there  has  been an  earlier  applicable
     Extension  Termination  Date  after  December  31,  1999  and on or  before
     December  31,  2000,  the  first   anniversary  of  such  prior   Extension
     Termination  Date  and (b) the  termination  in  whole  of the  Commitments
     pursuant to Section 2.04 or Section 6.01; provided,  that in no event shall
     an Extension Termination Date be after December 31, 2001.

          "Initial Termination Date" for any Advance means December 1, 2004.

          "Replacement Financing Arrangement" means a financing arrangement with
     any  Person who is not an  Affiliate  of the  Borrower  or the Agent or any
     Lender on  substantially  the terms which would apply hereunder  during the
     period from the then  applicable  Termination  Date to the latest  possible
     Extension  Termination  Date,  provided  that  the  interest  rate  of such
     Replacement  Financing  Arrangement  shall be no higher than the  Extension
     Period Interest Rate and, if no lesser interest rate is available, shall be
     the Extension Period Interest Rate.

          "Swap Rate" means the US-Dollar  denominated  interbank  interest rate
     swap  rates/LIBOR  offered  rates as shown on  Reuters  page ICAP and other
     comparable  brokerage  pages,  adjusted for the chosen interest rate method
     (annual/semi-annual compounding, etc.).

     3. The definition of "Change of Control Date" in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Change of Control  Date" means the date of  occurrence of a Change of
     Control;  provided,  that if such  occurrence  is on or prior to January 1,
     2001, the occurrence shall be deemed to have occurred on January 1, 2001.


<PAGE>   2

     4. The  definition  of  "Eligible  Assignee"  in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Eligible  Assignee"  means any Person approved by all of the Lenders;
     provided,  however,  that neither the Borrower  nor any  Subsidiary  of the
     Borrower shall qualify as an Eligible Assignee.

     5. The  definition of  "Termination  Date" set forth in Section 1.01 of the
Credit  Agreement  is  hereby  deleted  in its  entirety  and the  following  is
substituted in lieu thereof:

          "Termination  Date"  means  the  earlier  of (a)  either  the  Initial
     Termination Date or, if applicable,  the Extension Termination Date and (b)
     the  termination  in whole of the  Commitments  pursuant to Section 2.04 or
     Section 6.01.

     6. Section 2.03 of the Credit Agreement shall be amended as follows: in the
fifth line, "1/8 of 1%" is hereby deleted and "1/4 of 1%" is substituted in lieu
thereof.

     7.  Section  2.06(a)  of the  Credit  Agreement  is hereby  deleted  in its
entirety and the following is substituted in lieu thereof:

          "(a)  Interest on the  Advances.  From  September 1, 1998,  until such
     principal  amount shall be paid in full, the Borrower shall pay interest on
     the unpaid principal  amount of the Advances,  if any, which interest shall
     be  payable  semiannually,  at an  interest  rate  per  annum  equal to the
     applicable  rate for each  Advance as listed on Schedule A hereto under the
     heading  "Interest  Rate";   provided,   however,   that,  if  the  Initial
     Termination  Date is on or after January 1, 2001, as of the date  occurring
     45 Business  Days after the Change of Control  Date,  the interest rate per
     annum shall be the higher of (x) the  applicable  rate for each  Advance as
     listed on Schedule A hereto under the heading  "Interest  Rate" and (y) the
     rate  determined  under clause (a) of the  definition  of Extension  Period
     Interest Rate, determined as of the Change of Control Date (rather than the
     Initial  Termination Date), plus the Applicable Spread;  provided,  that in
     the event of an extension of the then  applicable  Termination  Date to the
     Extension  Termination Date pursuant to Section 2.15 hereto,  from the then
     applicable Termination Date to the Extension Termination Date, the interest
     rate per annum shall be equal to the Extension Period Interest Rate."

     8. Section 2.07  (Interest  Rate  Determination  Upon Change of Control) is
hereby deleted in its entirety and the following is substituted in lieu thereof:
"SECTION 2.07. RESERVED."

     9. The  following  Section 2.15 is hereby added at the end of Article II of
the Credit Agreement:

          "SECTION 2.15. Extension. If the then applicable Termination Date is a
     date on or before  December  31, 2000 and the  Borrower may desire that the
     Lenders  extend  the  then  applicable  Termination  Date to the  Extension
     Termination  Date,  then (a) the Borrower shall give written notice of said
     fact (the "Extension Request Notice") to the Agent and the Lenders no later
     than four (4) months before the  Termination  Date,  (b) the Borrower shall
     use its best  efforts  to obtain and enter into on or before the date which
     is two  months  prior  to the  Termination  Date  a  Replacement  Financing
     Arrangement  and  (c)  if  the  Borrower  shall  not  have  entered  into a
     Replacement Financing Arrangement on or before the date which is two months
     prior to the Termination  Date, the Borrower shall deliver to the Agent and
     the Lenders a certificate of the Borrower (the "Extension Certificate") (x)
     certifying  that the Borrower has not entered into a Replacement  Financing
     Arrangement, but the Borrower used its best efforts to do so as required by
     clause (b) and setting forth such evidence and back-up  detail as necessary
     to demonstrate the efforts made,  including a written letter from each bank
     from which a Replacement  Financing  Arrangement  as required by clause (b)
     was  requested,  indicating  that Borrower made such a request and that the
     request  was  denied,  and (y)  requesting  that  the  Termination  Date be
     extended to the Extension  Termination  Date. For purposes of this Section,
     the Borrower  shall be deemed to have complied with the  requirement to use
     its "best  efforts"  by  requesting  from and,  if  applicable,  diligently
     negotiating a Replacement  Financing  Arrangement as required by clause (b)
     with each of three (3) commercial  banks that are nationally  recognized in
     the United States and each have total assets in excess of  $20,000,000,000.
     The Agent shall have the right to designate,  within ten (10) Business Days
     after  receipt  of an  Extension  Request  Notice,  one of the three  banks
     referred  to in the  preceding  sentence.  For  purposes  of this  Section,
     diligent  negotiation  shall mean  negotiation  in good  faith and  without
     denial or unreasonable delay of any reasonable request by any such bank for
     information in connection with its consideration of providing a Replacement
     Financing  Arrangement  to Borrower.  For the  avoidance of doubt,  nothing
     herein is  intended  to  prevent  Borrower  from  obtaining  a  Replacement
     Financing  Arrangement  on terms  equal to or better  than  those  provided
     hereunder.

          Following receipt of the Extension  Certificate,  the Agent and/or the
     Lenders  shall have the right  (without any  obligation to do so) to obtain
     for the Borrower a Replacement  Financing  Arrangement on terms equal to or
     better than those provided hereunder.


<PAGE>   3

          If the Borrower has (a) delivered the Extension  Request Notice within
     the time period  specified  above,  (b) used its best efforts to obtain and
     enter into a Replacement  Financing Arrangement and delivered the Extension
     Certificate within the time period specified above and (c) not unreasonably
     or in bad faith refused to enter into a Replacement  Financing  Arrangement
     (with terms equal to or better than those provided  hereunder) obtained for
     the Borrower by the Agent or any of the Lenders  pursuant to the  preceding
     paragraph,  the  Termination  Date  shall  be  extended  to  the  Extension
     Termination  Date  and the  interest  rate  shall be the  Extension  Period
     Interest  Rate.  The Agent shall provide the Borrower with a written notice
     setting forth the Extension Period Interest Rate.

          The Borrower  shall be  responsible  for the payment of any  customary
     commitment  fee and other fees in connection  with  obtaining a Replacement
     Financing Arrangement.

          For the avoidance of doubt, in no event shall an Extension Termination
     Date be requested by the Borrower  after  December 31, 2000 or be on a date
     after December 31, 2001."

     10. Section 5.02 of the Credit Agreement is deleted in its entirety and the
following is substituted in lieu thereof:

          "SECTION 5.02. Negative Covenants.  On and after September 1, 1998 and
     so long as any Advance  shall  remain  unpaid or any Lender  shall have any
     Commitment  hereunder,  the  Borrower  will not,  unless the Lenders  shall
     otherwise consent in writing:

               (a) Liens,  etc.  Create or suffer to exist, or permit any of its
          Subsidiaries to create or suffer to exist, any lien, security interest
          or other  charge or  encumbrance,  or any other  type of  preferential
          arrangement,  upon or with respect to any of its  properties,  whether
          now owned or  hereafter  acquired,  or  assign,  or permit  any of its
          Subsidiaries to assign,  any right to receive income,  in each case to
          secure any Debt of any Person, other than:

                    (i)  purchase   money  liens  or  purchase   money  security
               interests  upon  or in  any  property  acquired  or  held  by the
               Borrower or any Subsidiary in the ordinary  course of business to
               secure  the  purchase   price  of  such  property  or  to  secure
               indebtedness  incurred  solely for the purpose of  financing  the
               acquisition of such property;

                    (ii) liens or security  interests  existing on such property
               at the time of its  acquisition  (other  than  any  such  lien or
               security interest created in contemplation of such acquisition);

                    (iii) liens for taxes, assessments and government charges or
               levies  to the  extent  not  required  to be paid  under  Section
               5.01(b) hereof;

                    (iv)   liens   imposed  by  law,   such  as   materialmen's,
               mechanics',  carriers', workmen's and repairmen's liens and other
               similar liens arising in the ordinary course of business securing
               obligations  that are not  overdue  for a period  of more than 30
               days;

                    (v) pledges or deposits to secure obligations under workers'
               compensation  laws or similar  legislation or to secure public or
               statutory obligations;

                    (vi)  easements,  rights  of way and other  encumbrances  on
               title to real  property  that do not render title to the property
               encumbered  thereby  unmarketable or materially  adversely affect
               the use of such property for its present purposes; and

                    (vii) liens incurred or deposits made in the ordinary course
               of business to secure the performance of letters of credit, bids,
               tenders, sales contracts,  leases, surety, appeal and performance
               bonds and other  similar  obligations  not incurred in connection
               with the borrowing of money;

               provided,  that the aggregate principal amount of the Debt, other
               indebtedness, taxes, assessments,  governmental charges or levies
               or other obligations  secured by the liens or security  interests
               referred to in clauses (i) through (vii) of this Section  5.02(a)
               shall  not  exceed  $45,000,000  in the  aggregate  at  any  time
               outstanding.

                    (b) Accounting Changes. Make or permit, or permit any of its
               Subsidiaries to make or permit, any change in accounting policies
               or reporting  practices,  except as allowed by generally accepted
               accounting principles."

     11. Unless otherwise  provided herein,  any term in initial capital letters
or all  capital  letters  used as a defined  term but not  defined in this First
Amendment shall have the meaning set forth in the Credit Agreement.


<PAGE>   4

     12.  Except as  modified  herein,  all terms and  conditions  of the Credit
Agreement shall remain in full force and effect.

     13. This First  Amendment shall be governed by, and construed in accordance
with, the laws of the State of New York.

     14. This First Amendment may be executed in any number of counterparts  and
by  different  parties  hereto in separate  counterparts,  each of which when so
executed  shall be deemed an  original  and all of which  taken  together  shall
constitute one and the same agreement. Delivery of any executed counterpart of a
signature  page to this First  Amendment  by  telecopier  shall be  effective as
delivery of a manually executed counterpart of this First Amendment.

     IN WITNESS WHEREOF,  the parties hereto have caused this First Amendment to
be executed by their duly authorized representatives effective as of the day and
year first above written.


MEMC ELECTRONIC MATERIALS, INC., as Borrower


By: /s/ Kenneth L. Young
    -----------------------------------
      Name:  Kenneth L. Young
      Title: Treasurer


HULS AG, as Agent


By: /s/ Georg Muller
    -----------------------------------
      Name:  Georg Muller
      Title:


By: /s/ Jurgen Buchsteiner
    -----------------------------------
      Name:  Jurgen Buchsteiner
      Title:


HULS AG, as the sole Lender


By: /s/ Georg Muller
    -----------------------------------
      Name:  Georg Muller
      Title:


By: /s/ Jurgen Buchsteiner
    -----------------------------------
      Name: Jurgen Buchsteiner
      Title:

<PAGE>   5
                                   Schedule A
                                       to
                       First Amendment to Credit Agreement


                         New Interest Rates per Advance

                          (effective September 1, 1998)

Advance Date                  Advance Amount                      Interest Rate
____________                  ______________                      _____________

13 Dec 1996                   $30,000,000                                9.422%

23 Dec 1996                    20,000,000                                9.622%

10 Jan 1997                    25,000,000                                9.722%

<PAGE>   1
                                                               EXHIBIT 10 EEE(1)
                       FIRST AMENDMENT TO CREDIT AGREEMENT

     This First Amendment to Credit Agreement  ("First  Amendment") is effective
as of  September 1, 1998 between  MEMC  ELECTRONIC  MATERIALS,  INC., a Delaware
corporation  ("Borrower"),  as the Borrower, and HULS AG, a company formed under
the laws of the Federal Republic of Germany ("Huls"),  as the sole Lender and as
Agent.

                                    Recitals

     WHEREAS,  Borrower  and Huls entered  into a Credit  Agreement  dated as of
April 1, 1996 (the "Credit  Agreement")  pursuant to which Huls agreed to extend
up to US$10,000,000 of credit to Borrower on a term basis;

     WHEREAS,  Borrower,  Huls and  certain  affiliates  of Huls have  agreed to
extend additional  credit to Borrower and to restructure the existing  financing
provided by Huls and its affiliates to Borrower, and

     WHEREAS, as part of such restructuring,  Borrower and Huls desire to change
the interest rate payable by Borrower to Huls under the Credit Agreement.

     NOW THEREFORE,  in consideration  of the foregoing  premises and the mutual
covenants and conditions hereinafter set forth, the parties agree as follows:

     1. The  definitions  of  "Applicable  Margin",  "Base  Rate",  "Performance
Level",  "Performance Level I", "Performance Level II",  "Performance Level III"
and  "Performance  Level IV" in Section 1.01 of the Credit  Agreement are hereby
deleted in their entirety.

     2. The following  definitions  are hereby  inserted in proper  alphabetical
order into Section 1.01 of the Credit Agreement:

          "Applicable  Spread" means a percentage  per annum equal to the excess
     of (a) the Bloomberg  fair market  sector  curves  (adjusted for the chosen
     interest  rate method)  applicable  two business  days prior to the Initial
     Termination Date to a B3 rated industrial  borrower for the period from the
     Initial  Termination  Date  through the latest  possible  Termination  Date
     (taking into account, if applicable, the latest Extension Termination Date)
     over (b) the corresponding Swap Rate for such period.

          "Extension Certificate" has the meaning specified in Section 2.15.

          "Extension  Period Interest Rate" means two business days prior to the
     Initial Termination Date, (a) either the British Bankers' Association (BBA)
     LIBOR rate (as shown on the Reuters page FRBD or comparable  pages) for the
     12-month  period or the Swap Rate for the  24-month  period or the 36-month
     period  commencing from the Initial  Termination  Date as follows:  (i) the
     36-month period for Advances  subject to an Initial  Termination Date on or
     prior to December 31, 1998, (ii) the 24-month  period for Advances  subject
     to an Initial  Termination  Date on or prior to December 31, 1999, or (iii)
     the 12-month period for all other Advances, plus (b) the Applicable Spread.

          "Extension Request Notice" has the meaning set forth in Section 2.15.

          "Extension  Termination Date", if any, means the earlier of (a) either
     (i) the first anniversary of the Initial Termination Date, or (ii) if there
     has been an earlier  applicable  Extension  Termination Date on or prior to
     December  31,  1999,  the  first   anniversary  of  such  prior   Extension
     Termination  Date,  or  (iii)  if  there  has  been an  earlier  applicable
     Extension  Termination  Date  after  December  31,  1999  and on or  before
     December  31,  2000,  the  first   anniversary  of  such  prior   Extension
     Termination  Date  and (b) the  termination  in  whole  of the  Commitments
     pursuant to Section 2.04 or Section 6.01; provided,  that in no event shall
     an Extension Termination Date be after December 31, 2001.

          "Initial Termination Date" for any Advance means April 1, 2001.

          "Replacement Financing Arrangement" means a financing arrangement with
     any  Person who is not an  Affiliate  of the  Borrower  or the Agent or any
     Lender on  substantially  the terms which would apply hereunder  during the
     period from the then  applicable  Termination  Date to the latest  possible
     Extension  Termination  Date,  provided  that  the  interest  rate  of such
     Replacement  Financing  Arrangement  shall be no higher than the  Extension
     Period Interest Rate and, if no lesser interest rate is available, shall be
     the Extension Period Interest Rate.

          "Swap Rate" means the US-Dollar  denominated  interbank  interest rate
     swap  rates/LIBOR  offered  rates as shown on  Reuters  page ICAP and other
     comparable  brokerage  pages,  adjusted for the chosen interest rate method
     (annual/semi-annual compounding, etc.).

     3. The definition of "Change of Control Date" in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Change of Control  Date" means the date of  occurrence of a Change of
     Control;  provided,  that if such  occurrence  is on or prior to January 1,
     2001, the occurrence shall be deemed to have occurred on January 1, 2001.


<PAGE>   2

     4. The  definition  of  "Eligible  Assignee"  in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Eligible  Assignee"  means any Person approved by all of the Lenders;
     provided,  however,  that neither the Borrower  nor any  Subsidiary  of the
     Borrower shall qualify as an Eligible Assignee.

     5. The  definition of  "Termination  Date" set forth in Section 1.01 of the
Credit  Agreement  is  hereby  deleted  in its  entirety  and the  following  is
substituted in lieu thereof:

          "Termination  Date"  means  the  earlier  of (a)  either  the  Initial
     Termination Date or, if applicable,  the Extension Termination Date and (b)
     the  termination  in whole of the  Commitments  pursuant to Section 2.04 or
     Section 6.01.

     6. Section 2.03 of the Credit Agreement shall be amended as follows: in the
fifth line, "1/8 of 1%" is hereby deleted and "1/4 of 1%" is substituted in lieu
thereof.

     7.  Section  2.06(a)  of the  Credit  Agreement  is hereby  deleted  in its
entirety and the following is substituted in lieu thereof:

          "(a)  Interest on the  Advances.  From  September 1, 1998,  until such
     principal  amount shall be paid in full, the Borrower shall pay interest on
     the unpaid principal  amount of the Advances,  if any, which interest shall
     be payable  semiannually,  at an  interest  rate per annum equal to 8.184%;
     provided,  however,  that, if the Initial  Termination  Date is on or after
     January 1, 2001, as of the date occurring 45 Business Days after the Change
     of Control  Date,  the  interest  rate per annum shall be the higher of (x)
     8.184% and (y) the rate  determined  under clause (a) of the  definition of
     Extension Period Interest Rate, determined as of the Change of Control Date
     (rather than the Initial  Termination  Date),  plus the Applicable  Spread;
     provided,  that  in  the  event  of an  extension  of the  then  applicable
     Termination Date to the Extension Termination Date pursuant to Section 2.15
     hereto,  from  the  then  applicable  Termination  Date  to  the  Extension
     Termination  Date,  the  interest  rate  per  annum  shall  be equal to the
     Extension Period Interest Rate."

     8. Section 2.07  (Interest  Rate  Determination  Upon Change of Control) is
hereby deleted in its entirety and the following is substituted in lieu thereof:
"SECTION 2.07. RESERVED."

     9. The  following  Section 2.15 is hereby added at the end of Article II of
the Credit Agreement:

          "SECTION 2.15. Extension. If the then applicable Termination Date is a
     date on or before  December  31, 2000 and the  Borrower may desire that the
     Lenders  extend  the  then  applicable  Termination  Date to the  Extension
     Termination  Date,  then (a) the Borrower shall give written notice of said
     fact (the "Extension Request Notice") to the Agent and the Lenders no later
     than four (4) months before the  Termination  Date,  (b) the Borrower shall
     use its best  efforts  to obtain and enter into on or before the date which
     is two  months  prior  to the  Termination  Date  a  Replacement  Financing
     Arrangement  and  (c)  if  the  Borrower  shall  not  have  entered  into a
     Replacement Financing Arrangement on or before the date which is two months
     prior to the Termination  Date, the Borrower shall deliver to the Agent and
     the Lenders a certificate of the Borrower (the "Extension Certificate") (x)
     certifying  that the Borrower has not entered into a Replacement  Financing
     Arrangement, but the Borrower used its best efforts to do so as required by
     clause (b) and setting forth such evidence and back-up  detail as necessary
     to demonstrate the efforts made,  including a written letter from each bank
     from which a Replacement  Financing  Arrangement  as required by clause (b)
     was  requested,  indicating  that Borrower made such a request and that the
     request  was  denied,  and (y)  requesting  that  the  Termination  Date be
     extended to the Extension  Termination  Date. For purposes of this Section,
     the Borrower  shall be deemed to have complied with the  requirement to use
     its "best  efforts"  by  requesting  from and,  if  applicable,  diligently
     negotiating a Replacement  Financing  Arrangement as required by clause (b)
     with each of three (3) commercial  banks that are nationally  recognized in
     the United States and each have total assets in excess of  $20,000,000,000.
     The Agent shall have the right to designate,  within ten (10) Business Days
     after  receipt  of an  Extension  Request  Notice,  one of the three  banks
     referred  to in the  preceding  sentence.  For  purposes  of this  Section,
     diligent  negotiation  shall mean  negotiation  in good  faith and  without
     denial or unreasonable delay of any reasonable request by any such bank for
     information in connection with its consideration of providing a Replacement
     Financing  Arrangement  to Borrower.  For the  avoidance of doubt,  nothing
     herein is  intended  to  prevent  Borrower  from  obtaining  a  Replacement
     Financing  Arrangement  on terms  equal to or better  than  those  provided
     hereunder.

          Following receipt of the Extension  Certificate,  the Agent and/or the
     Lenders  shall have the right  (without any  obligation to do so) to obtain
     for the Borrower a Replacement  Financing  Arrangement on terms equal to or
     better than those provided hereunder.

          If the Borrower has (a) delivered the Extension  Request Notice within

<PAGE>   3

     the time period  specified  above,  (b) used its best efforts to obtain and
     enter into a Replacement  Financing Arrangement and delivered the Extension
     Certificate within the time period specified above and (c) not unreasonably
     or in bad faith refused to enter into a Replacement  Financing  Arrangement
     (with terms equal to or better than those provided  hereunder) obtained for
     the Borrower by the Agent or any of the Lenders  pursuant to the  preceding
     paragraph,  the  Termination  Date  shall  be  extended  to  the  Extension
     Termination  Date  and the  interest  rate  shall be the  Extension  Period
     Interest  Rate.  The Agent shall provide the Borrower with a written notice
     setting forth the Extension Period Interest Rate.

          The Borrower  shall be  responsible  for the payment of any  customary
     commitment  fee and other fees in connection  with  obtaining a Replacement
     Financing Arrangement.

          For the avoidance of doubt, in no event shall an Extension Termination
     Date be requested by the Borrower  after  December 31, 2000 or be on a date
     after December 31, 2001."

     10. Section 5.02 of the Credit Agreement is deleted in its entirety and the
following is substituted in lieu thereof:

          "SECTION 5.02. Negative Covenants.  On and after September 1, 1998 and
     so long as any Advance  shall  remain  unpaid or any Lender  shall have any
     Commitment  hereunder,  the  Borrower  will not,  unless the Lenders  shall
     otherwise consent in writing:

               (a) Liens,  etc.  Create or suffer to exist, or permit any of its
          Subsidiaries to create or suffer to exist, any lien, security interest
          or other  charge or  encumbrance,  or any other  type of  preferential
          arrangement,  upon or with respect to any of its  properties,  whether
          now owned or  hereafter  acquired,  or  assign,  or permit  any of its
          Subsidiaries to assign,  any right to receive income,  in each case to
          secure any Debt of any Person, other than:

                    (i)  purchase   money  liens  or  purchase   money  security
               interests  upon  or in  any  property  acquired  or  held  by the
               Borrower or any Subsidiary in the ordinary  course of business to
               secure  the  purchase   price  of  such  property  or  to  secure
               indebtedness  incurred  solely for the purpose of  financing  the
               acquisition of such property;

                    (ii) liens or security  interests  existing on such property
               at the time of its  acquisition  (other  than  any  such  lien or
               security interest created in contemplation of such acquisition);

                    (iii) liens for taxes, assessments and government charges or
               levies  to the  extent  not  required  to be paid  under  Section
               5.01(b) hereof;

                    (iv)   liens   imposed  by  law,   such  as   materialmen's,
               mechanics',  carriers', workmen's and repairmen's liens and other
               similar liens arising in the ordinary course of business securing
               obligations  that are not  overdue  for a period  of more than 30
               days;

                    (v) pledges or deposits to secure obligations under workers'
               compensation  laws or similar  legislation or to secure public or
               statutory obligations;

                    (vi)  easements,  rights  of way and other  encumbrances  on
               title to real  property  that do not render title to the property
               encumbered  thereby  unmarketable or materially  adversely affect
               the use of such property for its present purposes; and

                    (vii) liens incurred or deposits made in the ordinary course
               of business to secure the performance of letters of credit, bids,
               tenders, sales contracts,  leases, surety, appeal and performance
               bonds and other  similar  obligations  not incurred in connection
               with the borrowing of money;

          provided,  that the  aggregate  principal  amount of the  Debt,  other
          indebtedness,  taxes,  assessments,  governmental charges or levies or
          other obligations  secured by the liens or security interests referred
          to in clauses  (i) through  (vii) of this  Section  5.02(a)  shall not
          exceed $45,000,000 in the aggregate at any time outstanding.

               (b)  Accounting  Changes.  Make or  permit,  or permit any of its
          Subsidiaries to make or permit,  any change in accounting  policies or
          reporting   practices,   except  as  allowed  by  generally   accepted
          accounting principles."

     11. Unless otherwise  provided herein,  any term in initial capital letters
or all  capital  letters  used as a defined  term but not  defined in this First
Amendment shall have the meaning set forth in the Credit Agreement.

     12.  Except as  modified  herein,  all terms and  conditions  of the Credit
Agreement shall remain in full force and effect.


<PAGE>   4

     13. This First  Amendment shall be governed by, and construed in accordance
with, the laws of the State of New York.

     14. This First Amendment may be executed in any number of counterparts  and
by  different  parties  hereto in separate  counterparts,  each of which when so
executed  shall be deemed an  original  and all of which  taken  together  shall
constitute one and the same agreement. Delivery of any executed counterpart of a
signature  page to this First  Amendment  by  telecopier  shall be  effective as
delivery of a manually executed counterpart of this First Amendment.

     IN WITNESS WHEREOF,  the parties hereto have caused this First Amendment to
be executed by their duly authorized representatives effective as of the day and
year first above written.


MEMC ELECTRONIC MATERIALS, INC., as Borrower


By: /s/ Kenneth L. Young
    -----------------------------------
      Name:  Kenneth L. Young
      Title: Treasurer


HULS AG, as Agent


By: /s/ Georg Muller
    -----------------------------------
      Name:  Georg Muller
      Title:


By: /s/ Jurgen Buchsteiner
    -----------------------------------
      Name:  Jurgen Buchsteiner
      Title:


HULS AG, as the sole Lender


By: /s/ Georg Muller
    -----------------------------------
      Name:  Georg Muller
      Title:


By: /s/ Jurgen Buchsteiner
    -----------------------------------
      Name: Jurgen Buchsteiner
      Title:

<PAGE>   1
                                                               EXHIBIT 10-FFF(1)
                   FIRST AMENDMENT TO OVERNIGHT LOAN AGREEMENT

     This First  Amendment to Overnight  Loan Agreement  ("First  Amendment") is
effective as of September 1, 1998  between MEMC  ELECTRONIC  MATERIALS,  INC., a
Delaware corporation, as the Borrower (the "Borrower"),  and Huls Corporation, a
company formed under the laws of the State of Delaware, U.S.A. ("Huls").

                                    Recitals

     WHEREAS,  Borrower and Huls entered into an Overnight Loan Agreement  dated
as of October 31, 1997 (the "Loan  Agreement")  pursuant to which Huls agreed to
extend up to US$10,000,000 of credit to Borrower on a day to day basis;

     WHEREAS,  Borrower,  Huls and  certain  affiliates  of Huls have  agreed to
extend additional  credit to Borrower and to restructure the existing  financing
provided by Huls and its affiliates to Borrower, and

     WHEREAS, as part of such restructuring,  Borrower and Huls desire to change
the interest  rate  payable by Borrower to Huls and the maturity  date under the
Loan Agreement.

     NOW THEREFORE,  in consideration  of the foregoing  premises and the mutual
covenants and conditions hereinafter set forth, the parties agree as follows:

     1. Amendment. Sections 1 through 9 of the Loan Agreement are hereby amended
and  restated  in their  entirety  as set forth in ANNEX A  attached  hereto and
incorporated by reference herein.

     2.  Counterparts.  This First  Amendment  may be  executed in any number of
counterparts and by different parties hereto in separate  counterparts,  each of
which  when so  executed  shall be deemed  an  original  and all of which  taken
together shall  constitute one and the same agreement.  Delivery of any executed
counterpart of a signature page to this First  Amendment by telecopier  shall be
effective  as  delivery  of  a  manually  executed  counterpart  of  this  First
Amendment.

     3. Governing Law. This First  Amendment shall be governed by, and construed
in accordance with, the laws of the State of New York.

     IN  WITNESS  WHEREOF,  the parties hereto have caused this First  Amendment
to  be  executed  by  their duly authorized representatives effective as of  the
day and year first above written.


MEMC ELECTRONIC MATERIALS, INC., as Borrower


By: /s/ Kenneth L. Young
    ---------------------------------
      Name:  Kenneth L. Young
      Title: Treasurer


HULS CORPORATION


By: /s/ H. J. Biangardi
    ---------------------------------
      Name:  H. J. Biangardi
      Title: President and CEO


By: /s/ John Schaffner
    ---------------------------------
      Name:  John Schaffner for Mitchell Solomowitz
      Title: Treasurer

<PAGE>   2
                                                                         Annex A
                                                              To First Amendment

1.   Definitions:  The  following  capitalized  terms used herein shall have the
     following meanings:

          "Agreement" means this Overnight Loan Agreement.

          "Applicable  Spread" means a percentage  per annum equal to the excess
     of (a) the Bloomberg  fair market  sector  curves  (adjusted for the chosen
     interest rate method) applicable two business days prior to October 1, 1998
     to a B3 rated  industrial  borrower  for the  period  from  October 1, 1998
     through  October  31,  2001 over (b) the  corresponding  Swap Rate for such
     period.

          "Borrower" or "MEMC" means MEMC Electronic Materials, Inc.

          "Extension  Maturity  Date",  if  any,  means  either  (i)  the  first
     anniversary  of October 30, 1999,  or (ii) if there has been an  applicable
     Extension  Maturity  Date on or prior  to  December  31,  2000,  the  first
     anniversary of such prior  Extension  Maturity Date;  provided,  that in no
     event shall an Extension Maturity Date be after December 31, 2001.

          "Final  Maturity Date" means October 30, 1999 or, if  applicable,  the
     Extension Maturity Date.

          "Huls" means Huls Corporation.

          "Interest Rate" shall be the rate determined under Section 5.

          "Lender"  means  Huls or any  Eligible  Assignee  (as  defined  in the
     Reference  Agreement) to whom Huls (or any  successor  Lender) has assigned
     its rights and obligations pursuant to Section 11.

          "Person" means an individual,  partnership,  corporation  (including a
     business trust), joint stock company,  trust,  unincorporated  association,
     joint venture,  limited  liability company or other entity, or a government
     or any political subdivision or agency thereof.

          "Reference  Agreement"  means that certain Credit Agreement dated June
     26, 1997 in the amount of  US$50,000,000  between Borrower and Huls, as the
     same may be amended from time to time.

          "Replacement Financing Arrangement" means a financing arrangement with
     any  Person  who is not an  affiliate  of the  Borrower  or the  Lender  on
     substantially  the terms which would apply hereunder during the period from
     the then applicable  Final Maturity Date to the latest  possible  Extension
     Maturity  Date,  provided  that  the  interest  rate  of  such  Replacement
     Financing  Arrangement shall be no higher than the Interest Rate and, if no
     lesser interest rate is available, shall be the Interest Rate.

2.   Principal and Value. From time to time,  beginning October 31, 1997, Lender
     agrees to lend to Borrower and Borrower agrees to borrow from the Lender an
     amount  to  be  designated  by  Borrower,   not  to  exceed  $10,000,000.00
     outstanding at any one time (each such borrowing,  an "Advance").  The loan
     shall  be  evidenced  by a  promissory  note in  substantially  the form of
     Exhibit "A"  attached  hereto.  All loans and  repayments  shall be made by
     Borrower by drawing funds from or depositing funds in Borrower's account at
     Citibank  N.A.,  New York,  New York that will zero balance with the Huls's
     account at Citibank  N.A.,  New York,  New York (Account No.  4070-0001) or
     such  other  account  of  the  Lender  as  it  may  designate  ("designated
     account").

3.   Term and Maturity.  (a) Final Maturity  Date.  The principal  amount of the
     loan  outstanding  together with any interest due and outstanding  shall be
     paid by Borrower to the Lender on the Final Maturity Date, or at such later
     date as may be mutually agreed in writing by the parties.

          (b) Extension. If the then applicable Final Maturity Date is a date on
     or before  December  31, 2000 and the  Borrower  may desire that the Lender
     extend the then  applicable  Final Maturity Date to the Extension  Maturity
     Date,  then (a) the Borrower  shall give  written  notice of said fact (the
     "Extension  Request  Notice")  to the  Lender no later than four (4) months
     before the Final Maturity Date, (b) the Borrower shall use its best efforts
     to obtain and enter into on or before the date which is two months prior to
     the Final Maturity Date a Replacement  Financing Arrangement and (c) if the
     Borrower shall not have entered into a Replacement Financing Arrangement on
     or before the date which is two months  prior to the Final  Maturity  Date,
     the Borrower shall deliver to the Lender a certificate of the Borrower (the
     "Extension  Certificate")  (x) certifying that the Borrower has not entered
     into a Replacement  Financing  Arrangement,  but the Borrower used its best
     efforts to do so as required by clause (b) and setting  forth such evidence
     and back-up detail as necessary to demonstrate the efforts made,  including
     a  written  letter  from  each  bank  from  which a  Replacement  Financing
     Arrangement  as  required  by clause  (b) was  requested,  indicating  that
     Borrower  made such a request  and that the  request  was  denied,  and (y)
     requesting  that the  Final  Maturity  Date be  extended  to the  Extension
     Maturity Date.  For purposes of this Section,  the Borrower shall be deemed
    

<PAGE>   3


     to have  complied  with  the  requirement  to use  its  "best  efforts"  by
     requesting  from and, if applicable,  diligently  negotiating a Replacement
     Financing  Arrangement  as  required  by clause  (b) with each of three (3)
     commercial  banks that are  nationally  recognized in the United States and
     each have total assets in excess of $20,000,000,000.  Lender shall have the
     right to  designate,  within ten (10)  Business  Days  after  receipt of an
     Extension  Request  Notice,  one  of the  three  banks  referred  to in the
     preceding  sentence.  For purposes of this  Section,  diligent  negotiation
     shall mean  negotiation  in good faith and without  denial or  unreasonable
     delay of any  reasonable  request  by any  such  bank  for  information  in
     connection  with its  consideration  of providing a  Replacement  Financing
     Arrangement  to Borrower.  For the  avoidance of doubt,  nothing  herein is
     intended  to  prevent  Borrower  from  obtaining  a  Replacement  Financing
     Arrangement on terms equal to or better than those provided hereunder.

          Following receipt of the Extension Certificate,  the Lender shall have
     the right  (without any  obligation  to do so) to obtain for the Borrower a
     Replacement  Financing  Arrangement  on terms equal to or better than those
     provided hereunder.

          If the Borrower has (a) delivered the Extension  Request Notice within
     the time period  specified  above,  (b) used its best efforts to obtain and
     enter into a Replacement  Financing Arrangement and delivered the Extension
     Certificate within the time period specified above and (c) not unreasonably
     or in bad faith refused to enter into a Replacement  Financing  Arrangement
     (with terms equal to or better than those provided  hereunder) obtained for
     the Borrower by the Lender pursuant to the preceding  paragraph,  the Final
     Maturity  Date shall be extended  to the  Extension  Maturity  Date and the
     interest  rate shall be the Interest  Rate.  The Lender  shall  provide the
     Borrower with a written notice setting forth the Interest Rate.

          The Borrower  shall be  responsible  for the payment of any  customary
     commitment  fee and other fees in connection  with  obtaining a Replacement
     Financing Arrangement.

          For the  avoidance of doubt,  in no event shall an Extension  Maturity
     Date be requested by the Borrower  after  December 31, 2000 or be on a date
     after December 31, 2001.

4.   Rollover  Dates.  Any amount  borrowed  hereunder  shall be on the basis of
     daily  rollover  periods.  Each rollover date shall be a banking day in New
     York,  New York  ("banking  day").  However,  should  the  designated  bank
     designated  by the  Lender in  Section 2 be  closed on a banking  day,  the
     Lender would not be required to loan money to Borrower  nor would  Borrower
     have  the  option  to repay a loan.  On the  initial  and  each  respective
     rollover date thereafter,  Borrower shall have the option to repay the full
     principal  amount  outstanding or any portion  thereof,  rollover an amount
     outstanding,  or  borrow  an  additional  amount  provided  that the  total
     principal  amount  will not exceed  $10,000,000.00.  Borrower  will  notify
     Lender of  repayments,  draw-downs and rollovers by a telefax or memorandum
     from Borrower,  to Lender by 10:00 a.m. Central time on the day money is to
     be borrowed, or repaid.

5.   Interest Rates.  Until September 30, 1998,  interest shall be calculated at
     the FED Funds  opening  rate plus  .25% as quoted by VEBA  Corporation  and
     supplied  by  Citibank.  On and after  October 1, 1998,  interest  shall be
     calculated  daily at the FED Funds opening rate plus the Applicable  Spread
     as  quoted  by  VEBA  Corporation  and  supplied  by  Citibank.  For  loans
     outstanding  on days  other  than  banking  days,  the  interest  shall  be
     calculated at the rate  applicable for the last preceding  banking day. The
     interest  rate  shall be  furnished  daily if there is a loan  outstanding.
     Interest  shall accrue on all  outstanding  amounts and shall be calculated
     based upon a 360 day year.

6.   Payment of Interest.  Payments of interest  shall be made by wire transfer,
     or other method of same day  settlement,  only on banking  days,  not later
     than 10:00 a.m.  Central time, to the account of Huls,  with Citibank N.A.,
     New York, New York, (Account No. 4070-0001) or to such other account of the
     Lender as it may designate.  Interest will be payable monthly, with payment
     due the day after the Lender  notifies  Borrower  of the amount due for the
     prior month.

7.   Penalty.  If Borrower shall borrow,  repay or rollover an amount  different
     than which it notifies the Lenders  pursuant to paragraph 4, Borrower shall
     pay to the  Lender  a  penalty  equal  to the  .25%  of the  amount  of the
     understatement divided by 360.

8.   Covenants.  So long as any Advance shall remain unpaid or Lender shall have
     any  Commitment  hereunder,  the Borrower will comply with the  Affirmative
     Covenants  set forth in  Section  5.01 (on and after the  Change of Control
     Date as defined in the  Reference  Agreement)  and the  Negative  Covenants
     (including  Negative  Pledge)  set forth in Section  5.02 of the  Reference
     Agreement, all of which the Borrower, by signing this Agreement,  expressly
     repeats and incorporates herein.

9.   Conditions Precedent to each Borrowing. The obligation of Lender to make an
     Advance on the occasion of each borrowing shall be subject to the condition
     precedent  that no event has  occurred and is  continuing,  or would result
     from such Advance or from the application of the proceeds  therefrom,  that

<PAGE>   4


     constitutes a Default under the Reference Agreement.

10.  Events of Default.  Each of the Events of Default set forth in Section 6.01
     of the Reference  Agreement shall constitute an Event of Default  hereunder
     and the Lender  shall have the rights with respect to Events of Default and
     Defaults with respect to the amounts loaned hereunder that are set forth in
     the Reference Agreement.

11.  Assignment.  Lender  may  assign  its  rights  and  obligations  under this
     Agreement in whole but not in part and otherwise in accordance with Section
     8.07 of the Reference Agreement, provided that any such assignment shall be
     made to a single Eligible Assignee (as defined in the Reference Agreement).

12.  Commitment  Fee. The Borrower  agrees to pay to the Lender a commitment fee
     on the unused  portion of Lender's  commitment  from October 1, 1998 in the
     case of Huls and from the effective  date  specified in the  Assignment and
     Acceptance  pursuant  to which it  became  a Lender  in case of each  other
     Lender  until the Final  Maturity  Date at a rate per annum equal to 1/4 of
     1%,  payable  monthly,  with payment due the day after the Lender  notifies
     Borrower of the amount due for the prior month.

13.  Governing  Law.  This  Agreement  shall be governed  by, and  construed  in
     accordance with, the laws of the State of New York.

<PAGE>   1
                                                                EXHIBIT 10JJJ(1)

                       FIRST AMENDMENT TO CREDIT AGREEMENT

     This First Amendment to Credit Agreement  ("First  Amendment") is effective
as of  September 1, 1998 between  MEMC  ELECTRONIC  MATERIALS,  INC., a Delaware
corporation  ("Borrower"),  as the  Borrower,  and Huls  Corporation,  a company
formed under the laws of the State of  Delaware,  U.S.A.  ("Huls"),  as the sole
Lender and as Agent.

                                    Recitals

     WHEREAS, Borrower and Huls entered into a Credit Agreement dated as of June
26, 1997 (the "Credit Agreement")  pursuant to which Huls agreed to extend up to
US$25,000,000 of credit to Borrower on a term basis;

     WHEREAS,  Borrower,  Huls and  certain  affiliates  of Huls have  agreed to
extend additional  credit to Borrower and to restructure the existing  financing
provided by Huls and its affiliates to Borrower, and

     WHEREAS, as part of such restructuring,  Borrower and Huls desire to change
the interest rate payable by Borrower to Huls under the Credit Agreement.

     NOW THEREFORE,  in consideration  of the foregoing  premises and the mutual
covenants and conditions hereinafter set forth, the parties agree as follows:

     1. The  definitions  of  "Applicable  Margin",  "Base  Rate",  "Performance
Level",  "Performance Level I", "Performance Level II",  "Performance Level III"
and  "Performance  Level IV" in Section 1.01 of the Credit  Agreement are hereby
deleted in their entirety.

     2. The following  definitions  are hereby  inserted in proper  alphabetical
order into Section 1.01 of the Credit Agreement:

          "Applicable  Spread" means a percentage  per annum equal to the excess
     of (a) the Bloomberg  fair market  sector  curves  (adjusted for the chosen
     interest  rate method)  applicable  two business  days prior to the Initial
     Maturity  Date to a B3 rated  industrial  borrower  for the period from the
     Initial  Maturity  Date through the latest  possible  Final  Maturity  Date
     (taking into account,  if applicable,  the latest Extension  Maturity Date)
     over (b) the corresponding Swap Rate for such period.

          "Extension Certificate" has the meaning specified in Section 2.15.

          "Extension  Period Interest Rate" means two business days prior to the
     Initial  Maturity Date, (a) either the British Bankers'  Association  (BBA)
     LIBOR rate (as shown on the Reuters page FRBD or comparable  pages) for the
     12-month  period or the Swap Rate for the  24-month  period or the 36-month
     period  commencing  from the  Initial  Maturity  Date as  follows:  (i) the
     36-month  period for  Advances  subject to an Initial  Maturity  Date on or
     prior to December 31, 1998, (ii) the 24-month  period for Advances  subject
     to an Initial  Maturity Date on or prior to December 31, 1999, or (iii) the
     12-month period for all other Advances, plus (b) the Applicable Spread.

          "Extension Request Notice" has the meaning set forth in Section 2.15.

          "Extension Maturity Date", if any, means the earlier of (a) either (i)
     the first  anniversary  of the Initial  Maturity Date, or (ii) if there has
     been an earlier applicable  Extension Maturity Date on or prior to December
     31, 1999, the first  anniversary of such prior Extension  Maturity Date, or
     (iii) if there has been an earlier applicable Extension Maturity Date after
     December 31, 1999 and on or before December 31, 2000, the first anniversary
     of such prior  Extension  Maturity Date and (b) the termination in whole of
     the Commitments pursuant to Section 2.04 or Section 6.01; provided, that in
     no event shall an Extension Maturity Date be after December 31, 2001.

          "Initial Maturity Date" for any Advance means June 25, 2002.

          "Replacement Financing Arrangement" means a financing arrangement with
     any  Person who is not an  Affiliate  of the  Borrower  or the Agent or any
     Lender on  substantially  the terms which would apply hereunder  during the
     period from the then applicable  Final Maturity Date to the latest possible
     Extension   Maturity  Date,   provided  that  the  interest  rate  of  such
     Replacement  Financing  Arrangement  shall be no higher than the  Extension
     Period Interest Rate and, if no lesser interest rate is available, shall be
     the Extension Period Interest Rate.

          "Swap Rate" means the US-Dollar  denominated  interbank  interest rate
     swap  rates/LIBOR  offered  rates as shown on  Reuters  page ICAP and other
     comparable  brokerage  pages,  adjusted for the chosen interest rate method
     (annual/semi-annual compounding, etc.).

     3. The definition of "Change of Control Date" in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Change of Control  Date" means the date of  occurrence of a Change of
     Control;  provided,  that if such  occurrence  is on or prior to January 1,
     2001, the occurrence shall be deemed to have occurred on January 1, 2001.

     4. The  definition  of  "Eligible  Assignee"  in Section 1.01 of the Credit
<PAGE>   2

Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Eligible  Assignee"  means any Person approved by all of the Lenders;
     provided,  however,  that neither the Borrower  nor any  Subsidiary  of the
     Borrower shall qualify as an Eligible Assignee.

     5. The definition of "Final Maturity Date" set forth in Section 1.01 of the
Credit  Agreement  is  hereby  deleted  in its  entirety  and the  following  is
substituted in lieu thereof:

          "Final  Maturity  Date"  means the  earlier of (a) either the  Initial
     Maturity Date or, if  applicable,  the Extension  Maturity Date and (b) the
     termination in whole of the Commitments pursuant to Section 2.04 or Section
     6.01.

     6. Section 2.03 of the Credit Agreement shall be amended as follows: in the
fifth line, "1/8 of 1%" is hereby deleted and "1/4 of 1%" is substituted in lieu
thereof.

     7.  Section  2.06(a)  of the  Credit  Agreement  is hereby  deleted  in its
entirety and the following is substituted in lieu thereof:

          "(a)  Interest on the  Advances.  From  September 1, 1998,  until such
     principal  amount shall be paid in full, the Borrower shall pay interest on
     the unpaid principal  amount of the Advances,  if any, which interest shall
     be payable semiannually on each June 15th and December 15th, at an interest
     rate per annum equal to 8.467%;  provided,  however,  that,  if the Initial
     Maturity Date is on or after  January 1, 2001, as of the date  occurring 45
     Business Days after the Change of Control Date, the interest rate per annum
     shall be the higher of (x) 8.467% and (y) the rate determined  under clause
     (a) of the definition of Extension  Period Interest Rate,  determined as of
     the Change of Control Date (rather than the Initial  Maturity  Date),  plus
     the Applicable Spread;  provided,  that in the event of an extension of the
     then applicable Final Maturity Date to the Extension Maturity Date pursuant
     to Section 2.15 hereto, from the then applicable Final Maturity Date to the
     Extension  Maturity Date, the interest rate per annum shall be equal to the
     Extension Period Interest Rate."

     8. Section 2.07  (Interest  Rate  Determination  Upon Change of Control) is
hereby deleted in its entirety and the following is substituted in lieu thereof:
"SECTION 2.07. RESERVED."

     9. The  following  Section 2.15 is hereby added at the end of Article II of
the Credit Agreement:

          "SECTION 2.15.  Extension.  If the then applicable Final Maturity Date
     is a date on or before  December  31, 2000 and the Borrower may desire that
     the Lenders extend the then applicable Final Maturity Date to the Extension
     Maturity Date, then (a) the Borrower shall give written notice of said fact
     (the "Extension Request Notice") to the Agent and the Lenders no later than
     four (4) months before the Final  Maturity Date, (b) the Borrower shall use
     its best  efforts  to obtain  and enter into on or before the date which is
     two  months  prior  to the  Final  Maturity  Date a  Replacement  Financing
     Arrangement  and  (c)  if  the  Borrower  shall  not  have  entered  into a
     Replacement Financing Arrangement on or before the date which is two months
     prior to the Final  Maturity  Date, the Borrower shall deliver to the Agent
     and the Lenders a certificate of the Borrower (the "Extension Certificate")
     (x)  certifying  that  the  Borrower  has not  entered  into a  Replacement
     Financing  Arrangement,  but the Borrower used its best efforts to do so as
     required by clause (b) and setting forth such  evidence and back-up  detail
     as necessary to  demonstrate  the efforts made,  including a written letter
     from each bank from which a Replacement  Financing  Arrangement as required
     by clause (b) was requested,  indicating  that Borrower made such a request
     and that the request was denied, and (y) requesting that the Final Maturity
     Date be extended  to the  Extension  Maturity  Date.  For  purposes of this
     Section, the Borrower shall be deemed to have complied with the requirement
     to use its "best efforts" by requesting from and, if applicable, diligently
     negotiating a Replacement  Financing  Arrangement as required by clause (b)
     with each of three (3) commercial  banks that are nationally  recognized in
     the United States and each have total assets in excess of  $20,000,000,000.
     The Agent shall have the right to designate,  within ten (10) Business Days
     after  receipt  of an  Extension  Request  Notice,  one of the three  banks
     referred  to in the  preceding  sentence.  For  purposes  of this  Section,
     diligent  negotiation  shall mean  negotiation  in good  faith and  without
     denial or unreasonable delay of any reasonable request by any such bank for
     information in connection with its consideration of providing a Replacement
     Financing  Arrangement  to Borrower.  For the  avoidance of doubt,  nothing
     herein is  intended  to  prevent  Borrower  from  obtaining  a  Replacement
     Financing  Arrangement  on terms  equal to or better  than  those  provided
     hereunder.

          Following receipt of the Extension  Certificate,  the Agent and/or the
     Lenders  shall have the right  (without any  obligation to do so) to obtain
     for the Borrower a Replacement  Financing  Arrangement on terms equal to or
     better than those provided hereunder.

          If the Borrower has (a) delivered the Extension  Request Notice within
     the time period  specified  above,  (b) used its best efforts to obtain and
<PAGE>   3

     enter into a Replacement  Financing Arrangement and delivered the Extension
     Certificate within the time period specified above and (c) not unreasonably
     or in bad faith refused to enter into a Replacement  Financing  Arrangement
     (with terms equal to or better than those provided  hereunder) obtained for
     the Borrower by the Agent or any of the Lenders  pursuant to the  preceding
     paragraph,  the Final  Maturity  Date shall be  extended  to the  Extension
     Maturity Date and the interest rate shall be the Extension  Period Interest
     Rate.  The Agent shall provide the Borrower with a written  notice  setting
     forth the Extension Period Interest Rate.

          The Borrower  shall be  responsible  for the payment of any  customary
     commitment  fee and other fees in connection  with  obtaining a Replacement
     Financing Arrangement.

          For the  avoidance of doubt,  in no event shall an Extension  Maturity
     Date be requested by the Borrower  after  December 31, 2000 or be on a date
     after December 31, 2001."

     10. Section 5.02 of the Credit Agreement is deleted in its entirety and the
following is substituted in lieu thereof:

          "SECTION 5.02. Negative Covenants.  On and after September 1, 1998 and
     so long as any Advance  shall  remain  unpaid or any Lender  shall have any
     Commitment  hereunder,  the  Borrower  will not,  unless the Lenders  shall
     otherwise consent in writing:

               (a) Liens,  etc.  Create or suffer to exist, or permit any of its
          Subsidiaries to create or suffer to exist, any lien, security interest
          or other  charge or  encumbrance,  or any other  type of  preferential
          arrangement,  upon or with respect to any of its  properties,  whether
          now owned or  hereafter  acquired,  or  assign,  or permit  any of its
          Subsidiaries to assign,  any right to receive income,  in each case to
          secure any Debt of any Person, other than:

                    (i)  purchase   money  liens  or  purchase   money  security
               interests  upon  or in  any  property  acquired  or  held  by the
               Borrower or any Subsidiary in the ordinary  course of business to
               secure  the  purchase   price  of  such  property  or  to  secure
               indebtedness  incurred  solely for the purpose of  financing  the
               acquisition of such property;

                    (ii) liens or security  interests  existing on such property
               at the time of its  acquisition  (other  than  any  such  lien or
               security interest created in contemplation of such acquisition);

                    (iii) liens for taxes, assessments and government charges or
               levies  to the  extent  not  required  to be paid  under  Section
               5.01(b) hereof;

                    (iv)   liens   imposed  by  law,   such  as   materialmen's,
               mechanics',  carriers', workmen's and repairmen's liens and other
               similar liens arising in the ordinary course of business securing
               obligations  that are not  overdue  for a period  of more than 30
               days;

                    (v) pledges or deposits to secure obligations under workers'
               compensation  laws or similar  legislation or to secure public or
               statutory obligations;

                    (vi)  easements,  rights  of way and other  encumbrances  on
               title to real  property  that do not render title to the property
               encumbered  thereby  unmarketable or materially  adversely affect
               the use of such property for its present purposes; and

                    (vii) liens incurred or deposits made in the ordinary course
               of business to secure the performance of letters of credit, bids,
               tenders, sales contracts,  leases, surety, appeal and performance
               bonds and other  similar  obligations  not incurred in connection
               with the borrowing of money;

          provided,  that the  aggregate  principal  amount of the  Debt,  other
          indebtedness,  taxes,  assessments,  governmental charges or levies or
          other obligations  secured by the liens or security interests referred
          to in clauses  (i) through  (vii) of this  Section  5.02(a)  shall not
          exceed $45,000,000 in the aggregate at any time outstanding.

               (b)  Accounting  Changes.  Make or  permit,  or permit any of its
          Subsidiaries to make or permit,  any change in accounting  policies or
          reporting   practices,   except  as  allowed  by  generally   accepted
          accounting principles."

     11. Unless otherwise  provided herein,  any term in initial capital letters
or all  capital  letters  used as a defined  term but not  defined in this First
Amendment shall have the meaning set forth in the Credit Agreement.

     12.  Except as  modified  herein,  all terms and  conditions  of the Credit
Agreement shall remain in full force and effect.

     13. This First  Amendment shall be governed by, and construed in accordance
<PAGE>   4

with, the laws of the State of New York.

     14. This First Amendment may be executed in any number of counterparts  and
by  different  parties  hereto in separate  counterparts,  each of which when so
executed  shall be deemed an  original  and all of which  taken  together  shall
constitute one and the same agreement. Delivery of any executed counterpart of a
signature  page to this First  Amendment  by  telecopier  shall be  effective as
delivery of a manually executed counterpart of this First Amendment.

     IN WITNESS WHEREOF,  the parties hereto have caused this First Amendment to
be executed by their duly authorized representatives effective as of the day and
year first above written.


MEMC ELECTRONIC MATERIALS, INC., as Borrower


By: /s/ Kenneth L. Young
    ---------------------------------
      Name:  Kenneth L. Young
      Title: Treasurer


HULS CORPORATION, as Agent


By: /s/ H. J. Biangardi
    ---------------------------------
      Name:  H. J. Biangardi
      Title: President and CEO


By: /s/ John Schaffner
    ---------------------------------
      Name:  John Schaffner for Mitchell Solomowitz
      Title: Treasurer


HULS CORPORATION, as the sole Lender


By: /s/ H. J. Biangardi
    ---------------------------------
      Name:  H. J. Biangardi
      Title: President and CEO


By: /s/ John Schaffner
    ---------------------------------
      Name:  John Schaffner for Mitchell Solomowitz
      Title: Treasurer

<PAGE>   1
                                                                EXHIBIT 10KKK(1)
                       FIRST AMENDMENT TO CREDIT AGREEMENT

     This First Amendment to Credit Agreement  ("First  Amendment") is effective
as of  September 1, 1998 between  MEMC  ELECTRONIC  MATERIALS,  INC., a Delaware
corporation  ("Borrower"),  as the  Borrower,  and Huls  Corporation,  a company
formed under the laws of the State of  Delaware,  U.S.A.  ("Huls"),  as the sole
Lender and as Agent.

                                    Recitals

     WHEREAS, Borrower and Huls entered into a Credit Agreement dated as of June
26, 1997 (the "Credit Agreement")  pursuant to which Huls agreed to extend up to
US$50,000,000 of credit to Borrower on a term basis;

     WHEREAS,  Borrower,  Huls and  certain  affiliates  of Huls have  agreed to
extend additional  credit to Borrower and to restructure the existing  financing
provided by Huls and its affiliates to Borrower, and

     WHEREAS, as part of such restructuring,  Borrower and Huls desire to change
the interest rate payable by Borrower to Huls under the Credit Agreement.

     NOW THEREFORE,  in consideration  of the foregoing  premises and the mutual
covenants and conditions hereinafter set forth, the parties agree as follows:

     1. The  definitions  of  "Applicable  Margin",  "Base  Rate",  "Performance
Level",  "Performance Level I", "Performance Level II",  "Performance Level III"
and  "Performance  Level IV" in Section 1.01 of the Credit  Agreement are hereby
deleted in their entirety.

     2. The following  definitions  are hereby  inserted in proper  alphabetical
order into Section 1.01 of the Credit Agreement:

          "Applicable  Spread" means a percentage  per annum equal to the excess
     of (a) the Bloomberg  fair market  sector  curves  (adjusted for the chosen
     interest  rate method)  applicable  two business  days prior to the Initial
     Maturity  Date to a B3 rated  industrial  borrower  for the period from the
     Initial  Maturity  Date through the latest  possible  Final  Maturity  Date
     (taking into account,  if applicable,  the latest Extension  Maturity Date)
     over (b) the corresponding Swap Rate for such period.

          "Extension Certificate" has the meaning specified in Section 2.15.

          "Extension  Period Interest Rate" means two business days prior to the
     Initial  Maturity Date, (a) either the British Bankers'  Association  (BBA)
     LIBOR rate (as shown on the Reuters page FRBD or comparable  pages) for the
     12-month  period or the Swap Rate for the  24-month  period or the 36-month
     period  commencing  from the  Initial  Maturity  Date as  follows:  (i) the
     36-month  period for  Advances  subject to an Initial  Maturity  Date on or
     prior to December 31, 1998, (ii) the 24-month  period for Advances  subject
     to an Initial  Maturity Date on or prior to December 31, 1999, or (iii) the
     12-month period for all other Advances, plus (b) the Applicable Spread.

          "Extension Request Notice" has the meaning set forth in Section 2.15.

          "Extension Maturity Date", if any, means the earlier of (a) either (i)
     the first  anniversary  of the Initial  Maturity Date, or (ii) if there has
     been an earlier applicable  Extension Maturity Date on or prior to December
     31, 1999, the first  anniversary of such prior Extension  Maturity Date, or
     (iii) if there has been an earlier applicable Extension Maturity Date after
     December 31, 1999 and on or before December 31, 2000, the first anniversary
     of such prior  Extension  Maturity Date and (b) the termination in whole of
     the Commitments pursuant to Section 2.04 or Section 6.01; provided, that in
     no event shall an Extension Maturity Date be after December 31, 2001.

          "Initial Maturity Date" for any Advance means June 25, 2003.

          "Replacement Financing Arrangement" means a financing arrangement with
     any  Person who is not an  Affiliate  of the  Borrower  or the Agent or any
     Lender on  substantially  the terms which would apply hereunder  during the
     period from the then applicable  Final Maturity Date to the latest possible
     Extension   Maturity  Date,   provided  that  the  interest  rate  of  such
     Replacement  Financing  Arrangement  shall be no higher than the  Extension
     Period Interest Rate and, if no lesser interest rate is available, shall be
     the Extension Period Interest Rate.

          "Swap Rate" means the US-Dollar  denominated  interbank  interest rate
     swap  rates/LIBOR  offered  rates as shown on  Reuters  page ICAP and other
     comparable  brokerage  pages,  adjusted for the chosen interest rate method
     (annual/semi-annual compounding, etc.).

     3. The definition of "Change of Control Date" in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Change of Control  Date" means the date of  occurrence of a Change of
     Control;  provided,  that if such  occurrence  is on or prior to January 1,
     2001, the occurrence shall be deemed to have occurred on January 1, 2001.

     4. The  definition  of  "Eligible  Assignee"  in Section 1.01 of the Credit
<PAGE>   2

Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Eligible  Assignee"  means any Person approved by all of the Lenders;
     provided,  however,  that neither the Borrower  nor any  Subsidiary  of the
     Borrower shall qualify as an Eligible Assignee.

     5. The definition of "Final Maturity Date" set forth in Section 1.01 of the
Credit  Agreement  is  hereby  deleted  in its  entirety  and the  following  is
substituted in lieu thereof:

          "Final  Maturity  Date"  means the  earlier of (a) either the  Initial
     Maturity Date or, if  applicable,  the Extension  Maturity Date and (b) the
     termination in whole of the Commitments pursuant to Section 2.04 or Section
     6.01.

     6. Section 2.03 of the Credit Agreement shall be amended as follows: in the
fifth line, "1/8 of 1%" is hereby deleted and "1/4 of 1%" is substituted in lieu
thereof.

     7.  Section  2.06(a)  of the  Credit  Agreement  is hereby  deleted  in its
entirety and the following is substituted in lieu thereof:

          "(a)  Interest on the  Advances.  From  September 1, 1998,  until such
     principal  amount shall be paid in full, the Borrower shall pay interest on
     the unpaid principal  amount of the Advances,  if any, which interest shall
     be payable semiannually on each June 15th and December 15th, at an interest
     rate per annum equal to the  applicable  rate for each Advance as listed on
     Schedule A hereto under the heading  "Interest  Rate";  provided,  however,
     that,  if the Initial  Maturity  Date is on or after January 1, 2001, as of
     the date  occurring 45 Business Days after the Change of Control Date,  the
     interest rate per annum shall be the higher of (x) the applicable  rate for
     each  Advance as listed on Schedule A hereto  under the  heading  "Interest
     Rate" and (y) the rate  determined  under clause (a) of the  definition  of
     Extension Period Interest Rate, determined as of the Change of Control Date
     (rather  than the  Initial  Maturity  Date),  plus the  Applicable  Spread;
     provided,  that in the event of an extension of the then  applicable  Final
     Maturity  Date to the  Extension  Maturity  Date  pursuant to Section  2.15
     hereto,  from the then  applicable  Final  Maturity  Date to the  Extension
     Maturity  Date, the interest rate per annum shall be equal to the Extension
     Period Interest Rate."

     8. Section 2.07  (Interest  Rate  Determination  Upon Change of Control) is
hereby deleted in its entirety and the following is substituted in lieu thereof:
"SECTION 2.07. RESERVED."

     9. The  following  Section 2.15 is hereby added at the end of Article II of
the Credit Agreement:

          "SECTION 2.15.  Extension.  If the then applicable Final Maturity Date
     is a date on or before  December  31, 2000 and the Borrower may desire that
     the Lenders extend the then applicable Final Maturity Date to the Extension
     Maturity Date, then (a) the Borrower shall give written notice of said fact
     (the "Extension Request Notice") to the Agent and the Lenders no later than
     four (4) months before the Final  Maturity Date, (b) the Borrower shall use
     its best  efforts  to obtain  and enter into on or before the date which is
     two  months  prior  to the  Final  Maturity  Date a  Replacement  Financing
     Arrangement  and  (c)  if  the  Borrower  shall  not  have  entered  into a
     Replacement Financing Arrangement on or before the date which is two months
     prior to the Final  Maturity  Date, the Borrower shall deliver to the Agent
     and the Lenders a certificate of the Borrower (the "Extension Certificate")
     (x)  certifying  that  the  Borrower  has not  entered  into a  Replacement
     Financing  Arrangement,  but the Borrower used its best efforts to do so as
     required by clause (b) and setting forth such  evidence and back-up  detail
     as necessary to  demonstrate  the efforts made,  including a written letter
     from each bank from which a Replacement  Financing  Arrangement as required
     by clause (b) was requested,  indicating  that Borrower made such a request
     and that the request was denied, and (y) requesting that the Final Maturity
     Date be extended  to the  Extension  Maturity  Date.  For  purposes of this
     Section, the Borrower shall be deemed to have complied with the requirement
     to use its "best efforts" by requesting from and, if applicable, diligently
     negotiating a Replacement  Financing  Arrangement as required by clause (b)
     with each of three (3) commercial  banks that are nationally  recognized in
     the United States and each have total assets in excess of  $20,000,000,000.
     The Agent shall have the right to designate,  within ten (10) Business Days
     after  receipt  of an  Extension  Request  Notice,  one of the three  banks
     referred  to in the  preceding  sentence.  For  purposes  of this  Section,
     diligent  negotiation  shall mean  negotiation  in good  faith and  without
     denial or unreasonable delay of any reasonable request by any such bank for
     information in connection with its consideration of providing a Replacement
     Financing  Arrangement  to Borrower.  For the  avoidance of doubt,  nothing
     herein is  intended  to  prevent  Borrower  from  obtaining  a  Replacement
     Financing  Arrangement  on terms  equal to or better  than  those  provided
     hereunder.

          Following receipt of the Extension  Certificate,  the Agent and/or the
     Lenders  shall have the right  (without any  obligation to do so) to obtain
     for the Borrower a Replacement  Financing  Arrangement on terms equal to or
     better than those provided hereunder.
<PAGE>   3

          If the Borrower has (a) delivered the Extension  Request Notice within
     the time period  specified  above,  (b) used its best efforts to obtain and
     enter into a Replacement  Financing Arrangement and delivered the Extension
     Certificate within the time period specified above and (c) not unreasonably
     or in bad faith refused to enter into a Replacement  Financing  Arrangement
     (with terms equal to or better than those provided  hereunder) obtained for
     the Borrower by the Agent or any of the Lenders  pursuant to the  preceding
     paragraph,  the Final  Maturity  Date shall be  extended  to the  Extension
     Maturity Date and the interest rate shall be the Extension  Period Interest
     Rate.  The Agent shall provide the Borrower with a written  notice  setting
     forth the Extension Period Interest Rate.

          The Borrower  shall be  responsible  for the payment of any  customary
     commitment  fee and other fees in connection  with  obtaining a Replacement
     Financing Arrangement.

          For the  avoidance of doubt,  in no event shall an Extension  Maturity
     Date be requested by the Borrower  after  December 31, 2000 or be on a date
     after December 31, 2001."

     10. Section 5.02 of the Credit Agreement is deleted in its entirety and the
following is substituted in lieu thereof:

          "SECTION 5.02. Negative Covenants.  On and after September 1, 1998 and
     so long as any Advance  shall  remain  unpaid or any Lender  shall have any
     Commitment  hereunder,  the  Borrower  will not,  unless the Lenders  shall
     otherwise consent in writing:

               (a) Liens,  etc.  Create or suffer to exist, or permit any of its
          Subsidiaries to create or suffer to exist, any lien, security interest
          or other  charge or  encumbrance,  or any other  type of  preferential
          arrangement,  upon or with respect to any of its  properties,  whether
          now owned or  hereafter  acquired,  or  assign,  or permit  any of its
          Subsidiaries to assign,  any right to receive income,  in each case to
          secure any Debt of any Person, other than:

                    (i)  purchase   money  liens  or  purchase   money  security
               interests  upon  or in  any  property  acquired  or  held  by the
               Borrower or any Subsidiary in the ordinary  course of business to
               secure  the  purchase   price  of  such  property  or  to  secure
               indebtedness  incurred  solely for the purpose of  financing  the
               acquisition of such property;

                    (ii) liens or security  interests  existing on such property
               at the time of its  acquisition  (other  than  any  such  lien or
               security interest created in contemplation of such acquisition);

                    (iii) liens for taxes, assessments and government charges or
               levies  to the  extent  not  required  to be paid  under  Section
               5.01(b) hereof;

                    (iv)   liens   imposed  by  law,   such  as   materialmen's,
               mechanics',  carriers', workmen's and repairmen's liens and other
               similar liens arising in the ordinary course of business securing
               obligations  that are not  overdue  for a period  of more than 30
               days;

                    (v) pledges or deposits to secure obligations under workers'
               compensation  laws or similar  legislation or to secure public or
               statutory obligations;

                    (vi)  easements,  rights  of way and other  encumbrances  on
               title to real  property  that do not render title to the property
               encumbered  thereby  unmarketable or materially  adversely affect
               the use of such property for its present purposes; and

                    (vii) liens incurred or deposits made in the ordinary course
               of business to secure the performance of letters of credit, bids,
               tenders, sales contracts,  leases, surety, appeal and performance
               bonds and other  similar  obligations  not incurred in connection
               with the borrowing of money;

          provided,  that the  aggregate  principal  amount of the  Debt,  other
          indebtedness,  taxes,  assessments,  governmental charges or levies or
          other obligations  secured by the liens or security interests referred
          to in clauses  (i) through  (vii) of this  Section  5.02(a)  shall not
          exceed $45,000,000 in the aggregate at any time outstanding.

               (b)  Accounting  Changes.  Make or  permit,  or permit any of its
          Subsidiaries to make or permit,  any change in accounting  policies or
          reporting   practices,   except  as  allowed  by  generally   accepted
          accounting principles."

     11. Unless otherwise  provided herein,  any term in initial capital letters
or all  capital  letters  used as a defined  term but not  defined in this First
Amendment shall have the meaning set forth in the Credit Agreement.

     12.  Except as  modified  herein,  all terms and  conditions  of the Credit
<PAGE>   4
Agreement shall remain in full force and effect.

     13. This First  Amendment shall be governed by, and construed in accordance
with, the laws of the State of New York.

     14. This First Amendment may be executed in any number of counterparts  and
by  different  parties  hereto in separate  counterparts,  each of which when so
executed  shall be deemed an  original  and all of which  taken  together  shall
constitute one and the same agreement. Delivery of any executed counterpart of a
signature  page to this First  Amendment  by  telecopier  shall be  effective as
delivery of a manually executed counterpart of this First Amendment.

     IN WITNESS WHEREOF,  the parties hereto have caused this First Amendment to
be executed by their duly authorized representatives effective as of the day and
year first above written.


MEMC ELECTRONIC MATERIALS, INC., as Borrower


By: /s/ Kenneth L. Young
    ---------------------------------
      Name:  Kenneth L. Young
      Title: Treasurer


HULS CORPORATION, as Agent


By: /s/ H. J. Biangardi
    ---------------------------------
      Name:  H. J. Biangardi
      Title: President and CEO


By: /s/ John Schaffner
    ---------------------------------
      Name:  John Schaffner for Mitchell Solomowitz
      Title: Treasurer


HULS CORPORATION, as the sole Lender


By: /s/ H. J. Biangardi
    ---------------------------------
      Name:  H. J. Biangardi
      Title: President and CEO


By: /s/ John Schaffner
    ---------------------------------
      Name:  John Schaffner for Mitchell Solomowitz
      Title: Treasurer

<PAGE>   5
                                   Schedule A
                                       to
                       First Amendment to Credit Agreement


                         New Interest Rates per Advance

                          (effective September 1, 1998)


Advance Date               Advance Amount                         Interest Rate
____________               ______________                         _____________

27 Feb. 1998               $25,000,000                                8.705%

 8 May 1998                 25,000,000                                8.762%

<PAGE>   1
                                                               EXHIBIT 10-LLL(1)


                       FIRST AMENDMENT TO CREDIT AGREEMENT

     This First Amendment to Credit Agreement  ("First  Amendment") is effective
as of  September 1, 1998 between  MEMC  ELECTRONIC  MATERIALS,  INC., a Delaware
corporation  ("Borrower"),  as the  Borrower,  and Huls  Corporation,  a company
formed under the laws of the State of  Delaware,  U.S.A.  ("Huls"),  as the sole
Lender and as Agent.

                                    Recitals

     WHEREAS, Borrower and Huls entered into a Credit Agreement dated as of June
26, 1997 (the "Credit Agreement")  pursuant to which Huls agreed to extend up to
US$50,000,000 of credit to Borrower on a term basis;

     WHEREAS,  Borrower,  Huls and  certain  affiliates  of Huls have  agreed to
extend additional  credit to Borrower and to restructure the existing  financing
provided by Huls and its affiliates to Borrower, and

     WHEREAS, as part of such restructuring,  Borrower and Huls desire to change
the interest rate payable by Borrower to Huls under the Credit Agreement.

     NOW THEREFORE,  in consideration  of the foregoing  premises and the mutual
covenants and conditions hereinafter set forth, the parties agree as follows:

     1. The  definitions  of  "Applicable  Margin",  "Base  Rate",  "Performance
Level",  "Performance Level I", "Performance Level II",  "Performance Level III"
and  "Performance  Level IV" in Section 1.01 of the Credit  Agreement are hereby
deleted in their entirety.

     2. The following  definitions  are hereby  inserted in proper  alphabetical
order into Section 1.01 of the Credit Agreement:

          "Applicable  Spread" means a percentage  per annum equal to the excess
     of (a) the Bloomberg  fair market  sector  curves  (adjusted for the chosen
     interest  rate method)  applicable  two business  days prior to the Initial
     Maturity  Date to a B3 rated  industrial  borrower  for the period from the
     Initial  Maturity  Date through the latest  possible  Final  Maturity  Date
     (taking into account,  if applicable,  the latest Extension  Maturity Date)
     over (b) the corresponding Swap Rate for such period.

          "Extension Certificate" has the meaning specified in Section 2.15.

          "Extension  Period Interest Rate" means two business days prior to the
     Initial  Maturity Date, (a) either the British Bankers'  Association  (BBA)
     LIBOR rate (as shown on the Reuters page FRBD or comparable  pages) for the
     12-month  period or the Swap Rate for the  24-month  period or the 36-month
     period  commencing  from the  Initial  Maturity  Date as  follows:  (i) the
     36-month  period for  Advances  subject to an Initial  Maturity  Date on or
     prior to December 31, 1998, (ii) the 24-month  period for Advances  subject
     to an Initial  Maturity Date on or prior to December 31, 1999, or (iii) the
     12-month period for all other Advances, plus (b) the Applicable Spread.

          "Extension Request Notice" has the meaning set forth in Section 2.15.

          "Extension Maturity Date", if any, means the earlier of (a) either (i)
     the first  anniversary  of the Initial  Maturity Date, or (ii) if there has
     been an earlier applicable  Extension Maturity Date on or prior to December
     31, 1999, the first  anniversary of such prior Extension  Maturity Date, or
     (iii) if there has been an earlier applicable Extension Maturity Date after
     December 31, 1999 and on or before December 31, 2000, the first anniversary
     of such prior  Extension  Maturity Date and (b) the termination in whole of
     the Commitments pursuant to Section 2.04 or Section 6.01; provided, that in
     no event shall an Extension Maturity Date be after December 31, 2001.

          "Initial Maturity Date" for any Advance means June 25, 2004.

          "Replacement Financing Arrangement" means a financing arrangement with
     any  Person who is not an  Affiliate  of the  Borrower  or the Agent or any
     Lender on  substantially  the terms which would apply hereunder  during the
     period from the then applicable  Final Maturity Date to the latest possible
     Extension   Maturity  Date,   provided  that  the  interest  rate  of  such
     Replacement  Financing  Arrangement  shall be no higher than the  Extension
     Period Interest Rate and, if no lesser interest rate is available, shall be
     the Extension Period Interest Rate.

          "Swap Rate" means the US-Dollar  denominated  interbank  interest rate
     swap  rates/LIBOR  offered  rates as shown on  Reuters  page ICAP and other
     comparable  brokerage  pages,  adjusted for the chosen interest rate method
     (annual/semi-annual compounding, etc.).

     3. The definition of "Change of Control Date" in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Change of Control  Date" means the date of  occurrence of a Change of
     Control;  provided,  that if such  occurrence  is on or prior to January 1,
     2001, the occurrence shall be deemed to have occurred on January 1, 2001.

     4. The  definition  of  "Eligible  Assignee"  in Section 1.01 of the Credit

<PAGE>   2


Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Eligible  Assignee"  means any Person approved by all of the Lenders;
     provided,  however,  that neither the Borrower  nor any  Subsidiary  of the
     Borrower shall qualify as an Eligible Assignee.

     5. The definition of "Final Maturity Date" set forth in Section 1.01 of the
Credit  Agreement  is  hereby  deleted  in its  entirety  and the  following  is
substituted in lieu thereof:

          "Final  Maturity  Date"  means the  earlier of (a) either the  Initial
     Maturity Date or, if  applicable,  the Extension  Maturity Date and (b) the
     termination in whole of the Commitments pursuant to Section 2.04 or Section
     6.01.

     6. Section 2.03 of the Credit Agreement shall be amended as follows: in the
fifth line, "1/8 of 1%" is hereby deleted and "1/4 of 1%" is substituted in lieu
thereof.

     7.  Section  2.06(a)  of the  Credit  Agreement  is hereby  deleted  in its
entirety and the following is substituted in lieu thereof:

          "(a)  Interest on the  Advances.  From  September 1, 1998,  until such
     principal  amount shall be paid in full, the Borrower shall pay interest on
     the unpaid principal  amount of the Advances,  if any, which interest shall
     be payable semiannually on each June 15th and December 15th, at an interest
     rate per annum equal to the  applicable  rate for each Advance as listed on
     Schedule A hereto under the heading  "Interest  Rate";  provided,  however,
     that,  if the Initial  Maturity  Date is on or after January 1, 2001, as of
     the date  occurring 45 Business Days after the Change of Control Date,  the
     interest rate per annum shall be the higher of (x) the applicable  rate for
     each  Advance as listed on Schedule A hereto  under the  heading  "Interest
     Rate" and (y) the rate  determined  under clause (a) of the  definition  of
     Extension Period Interest Rate, determined as of the Change of Control Date
     (rather  than the  Initial  Maturity  Date),  plus the  Applicable  Spread;
     provided,  that in the event of an extension of the then  applicable  Final
     Maturity  Date to the  Extension  Maturity  Date  pursuant to Section  2.15
     hereto,  from the then  applicable  Final  Maturity  Date to the  Extension
     Maturity  Date, the interest rate per annum shall be equal to the Extension
     Period Interest Rate."

     8. Section 2.07  (Interest  Rate  Determination  Upon Change of Control) is
hereby deleted in its entirety and the following is substituted in lieu thereof:
"SECTION 2.07. RESERVED."

     9. The  following  Section 2.15 is hereby added at the end of Article II of
the Credit Agreement:

          "SECTION 2.15.  Extension.  If the then applicable Final Maturity Date
     is a date on or before  December  31, 2000 and the Borrower may desire that
     the Lenders extend the then applicable Final Maturity Date to the Extension
     Maturity Date, then (a) the Borrower shall give written notice of said fact
     (the "Extension Request Notice") to the Agent and the Lenders no later than
     four (4) months before the Final  Maturity Date, (b) the Borrower shall use
     its best  efforts  to obtain  and enter into on or before the date which is
     two  months  prior  to the  Final  Maturity  Date a  Replacement  Financing
     Arrangement  and  (c)  if  the  Borrower  shall  not  have  entered  into a
     Replacement Financing Arrangement on or before the date which is two months
     prior to the Final  Maturity  Date, the Borrower shall deliver to the Agent
     and the Lenders a certificate of the Borrower (the "Extension Certificate")
     (x)  certifying  that  the  Borrower  has not  entered  into a  Replacement
     Financing  Arrangement,  but the Borrower used its best efforts to do so as
     required by clause (b) and setting forth such  evidence and back-up  detail
     as necessary to  demonstrate  the efforts made,  including a written letter
     from each bank from which a Replacement  Financing  Arrangement as required
     by clause (b) was requested,  indicating  that Borrower made such a request
     and that the request was denied, and (y) requesting that the Final Maturity
     Date be extended  to the  Extension  Maturity  Date.  For  purposes of this
     Section, the Borrower shall be deemed to have complied with the requirement
     to use its "best efforts" by requesting from and, if applicable, diligently
     negotiating a Replacement  Financing  Arrangement as required by clause (b)
     with each of three (3) commercial  banks that are nationally  recognized in
     the United States and each have total assets in excess of  $20,000,000,000.
     The Agent shall have the right to designate,  within ten (10) Business Days
     after  receipt  of an  Extension  Request  Notice,  one of the three  banks
     referred  to in the  preceding  sentence.  For  purposes  of this  Section,
     diligent  negotiation  shall mean  negotiation  in good  faith and  without
     denial or unreasonable delay of any reasonable request by any such bank for
     information in connection with its consideration of providing a Replacement
     Financing  Arrangement  to Borrower.  For the  avoidance of doubt,  nothing
     herein is  intended  to  prevent  Borrower  from  obtaining  a  Replacement
     Financing  Arrangement  on terms  equal to or better  than  those  provided
     hereunder.

          Following receipt of the Extension  Certificate,  the Agent and/or the
     Lenders  shall have the right  (without any  obligation to do so) to obtain
     for the Borrower a Replacement  Financing  Arrangement on terms equal to or
     better than those provided hereunder.

<PAGE>   3


          If the Borrower has (a) delivered the Extension  Request Notice within
     the time period  specified  above,  (b) used its best efforts to obtain and
     enter into a Replacement  Financing Arrangement and delivered the Extension
     Certificate within the time period specified above and (c) not unreasonably
     or in bad faith refused to enter into a Replacement  Financing  Arrangement
     (with terms equal to or better than those provided  hereunder) obtained for
     the Borrower by the Agent or any of the Lenders  pursuant to the  preceding
     paragraph,  the Final  Maturity  Date shall be  extended  to the  Extension
     Maturity Date and the interest rate shall be the Extension  Period Interest
     Rate.  The Agent shall provide the Borrower with a written  notice  setting
     forth the Extension Period Interest Rate.

          The Borrower  shall be  responsible  for the payment of any  customary
     commitment  fee and other fees in connection  with  obtaining a Replacement
     Financing Arrangement.

          For the  avoidance of doubt,  in no event shall an Extension  Maturity
     Date be requested by the Borrower  after  December 31, 2000 or be on a date
     after December 31, 2001."

     10. Section 5.02 of the Credit Agreement is deleted in its entirety and the
following is substituted in lieu thereof:

          "SECTION 5.02. Negative Covenants.  On and after September 1, 1998 and
     so long as any Advance  shall  remain  unpaid or any Lender  shall have any
     Commitment  hereunder,  the  Borrower  will not,  unless the Lenders  shall
     otherwise consent in writing:

               (a) Liens,  etc.  Create or suffer to exist, or permit any of its
          Subsidiaries to create or suffer to exist, any lien, security interest
          or other  charge or  encumbrance,  or any other  type of  preferential
          arrangement,  upon or with respect to any of its  properties,  whether
          now owned or  hereafter  acquired,  or  assign,  or permit  any of its
          Subsidiaries to assign,  any right to receive income,  in each case to
          secure any Debt of any Person, other than:

                    (i)  purchase   money  liens  or  purchase   money  security
               interests  upon  or in  any  property  acquired  or  held  by the
               Borrower or any Subsidiary in the ordinary  course of business to
               secure  the  purchase   price  of  such  property  or  to  secure
               indebtedness  incurred  solely for the purpose of  financing  the
               acquisition of such property;

                    (ii) liens or security  interests  existing on such property
               at the time of its  acquisition  (other  than  any  such  lien or
               security interest created in contemplation of such acquisition);

                    (iii) liens for taxes, assessments and government charges or
               levies  to the  extent  not  required  to be paid  under  Section
               5.01(b) hereof;

                    (iv)   liens   imposed  by  law,   such  as   materialmen's,
               mechanics',  carriers', workmen's and repairmen's liens and other
               similar liens arising in the ordinary course of business securing
               obligations  that are not  overdue  for a period  of more than 30
               days;

                    (v) pledges or deposits to secure obligations under workers'
               compensation  laws or similar  legislation or to secure public or
               statutory obligations;

                    (vi)  easements,  rights  of way and other  encumbrances  on
               title to real  property  that do not render title to the property
               encumbered  thereby  unmarketable or materially  adversely affect
               the use of such property for its present purposes; and

                    (vii) liens incurred or deposits made in the ordinary course
               of business to secure the performance of letters of credit, bids,
               tenders, sales contracts,  leases, surety, appeal and performance
               bonds and other  similar  obligations  not incurred in connection
               with the borrowing of money;

          provided,  that the  aggregate  principal  amount of the  Debt,  other
          indebtedness,  taxes,  assessments,  governmental charges or levies or
          other obligations  secured by the liens or security interests referred
          to in clauses  (i) through  (vii) of this  Section  5.02(a)  shall not
          exceed $45,000,000 in the aggregate at any time outstanding.

               (b)  Accounting  Changes.  Make or  permit,  or permit any of its
          Subsidiaries to make or permit,  any change in accounting  policies or
          reporting   practices,   except  as  allowed  by  generally   accepted
          accounting principles."

     11. Unless otherwise  provided herein,  any term in initial capital letters
or all  capital  letters  used as a defined  term but not  defined in this First
Amendment shall have the meaning set forth in the Credit Agreement.

     12.  Except as  modified  herein,  all terms and  conditions  of the Credit


<PAGE>   4

Agreement shall remain in full force and effect.

     13. This First  Amendment shall be governed by, and construed in accordance
with, the laws of the State of New York.

     14. This First Amendment may be executed in any number of counterparts  and
by  different  parties  hereto in separate  counterparts,  each of which when so
executed  shall be deemed an  original  and all of which  taken  together  shall
constitute one and the same agreement. Delivery of any executed counterpart of a
signature  page to this First  Amendment  by  telecopier  shall be  effective as
delivery of a manually executed counterpart of this First Amendment.

     IN WITNESS WHEREOF,  the parties hereto have caused this First Amendment to
be executed by their duly authorized representatives effective as of the day and
year first above written.


MEMC ELECTRONIC MATERIALS, INC., as Borrower


By: /s/ Kenneth L. Young
    ---------------------------------
      Name:  Kenneth L. Young
      Title: Treasurer


HULS CORPORATION, as Agent


By: /s/ H. J. Biangardi
    ---------------------------------
      Name:  H. J. Biangardi
      Title: President and CEO


By: /s/ John Schaffner
    ---------------------------------
      Name:  John Schaffner for Mitchell Solomowitz
      Title: Treasurer


HULS CORPORATION, as the sole Lender


By: /s/ H. J. Biangardi
    ---------------------------------
      Name:  H. J. Biangardi
      Title: President and CEO


By: /s/ John Schaffner
    ---------------------------------
      Name:  John Schaffner for Mitchell Solomowitz
      Title: Treasurer

<PAGE>   5
                                   Schedule A
                                       to
                       First Amendment to Credit Agreement


                         New Interest Rates per Advance

                          (effective September 1, 1998)

Advance Date                  Advance Amount                      Interest Rate
____________                  ______________                      _____________

 5 December 1997                $25,000,000                             9.124%

22 January 1998                  25,000,000                             8.761%

<PAGE>   1
                                                               EXHIBIT 10-MMM(1)
                       FIRST AMENDMENT TO CREDIT AGREEMENT

     This First Amendment to Credit Agreement  ("First  Amendment") is effective
as of  September 1, 1998 between  MEMC  ELECTRONIC  MATERIALS,  INC., a Delaware
corporation  ("Borrower"),  as the  Borrower,  and Huls  Corporation,  a company
formed under the laws of the State of  Delaware,  U.S.A.  ("Huls"),  as the sole
Lender and as Agent.

                                    Recitals

     WHEREAS, Borrower and Huls entered into a Credit Agreement dated as of June
26, 1997 (the "Credit Agreement")  pursuant to which Huls agreed to extend up to
US$75,000,000 of credit to Borrower on a term basis;

     WHEREAS,  Borrower,  Huls and  certain  affiliates  of Huls have  agreed to
extend additional  credit to Borrower and to restructure the existing  financing
provided by Huls and its affiliates to Borrower, and

     WHEREAS, as part of such restructuring,  Borrower and Huls desire to change
the interest rate payable by Borrower to Huls under the Credit Agreement.

     NOW THEREFORE,  in consideration  of the foregoing  premises and the mutual
covenants and conditions hereinafter set forth, the parties agree as follows:

     1. The  definitions  of  "Applicable  Margin",  "Base  Rate",  "Performance
Level",  "Performance Level I", "Performance Level II",  "Performance Level III"
and  "Performance  Level IV" in Section 1.01 of the Credit  Agreement are hereby
deleted in their entirety.

     2. The following  definitions  are hereby  inserted in proper  alphabetical
order into Section 1.01 of the Credit Agreement:

          "Applicable  Spread" means a percentage  per annum equal to the excess
     of (a) the Bloomberg  fair market  sector  curves  (adjusted for the chosen
     interest  rate method)  applicable  two business  days prior to the Initial
     Maturity  Date to a B3 rated  industrial  borrower  for the period from the
     Initial  Maturity  Date through the latest  possible  Final  Maturity  Date
     (taking into account,  if applicable,  the latest Extension  Maturity Date)
     over (b) the corresponding Swap Rate for such period.

          "Extension Certificate" has the meaning specified in Section 2.15.

          "Extension  Period Interest Rate" means two business days prior to the
     Initial  Maturity Date, (a) either the British Bankers'  Association  (BBA)
     LIBOR rate (as shown on the Reuters page FRBD or comparable  pages) for the
     12-month  period or the Swap Rate for the  24-month  period or the 36-month
     period  commencing  from the  Initial  Maturity  Date as  follows:  (i) the
     36-month  period for  Advances  subject to an Initial  Maturity  Date on or
     prior to December 31, 1998, (ii) the 24-month  period for Advances  subject
     to an Initial  Maturity Date on or prior to December 31, 1999, or (iii) the
     12-month period for all other Advances, plus (b) the Applicable Spread.

          "Extension Request Notice" has the meaning set forth in Section 2.15.

          "Extension Maturity Date", if any, means the earlier of (a) either (i)
     the first  anniversary  of the Initial  Maturity Date, or (ii) if there has
     been an earlier applicable  Extension Maturity Date on or prior to December
     31, 1999, the first  anniversary of such prior Extension  Maturity Date, or
     (iii) if there has been an earlier applicable Extension Maturity Date after
     December 31, 1999 and on or before December 31, 2000, the first anniversary
     of such prior  Extension  Maturity Date and (b) the termination in whole of
     the Commitments pursuant to Section 2.04 or Section 6.01; provided, that in
     no event shall an Extension Maturity Date be after December 31, 2001.

          "Initial Maturity Date" for any Advance means June 24, 2005.

          "Replacement Financing Arrangement" means a financing arrangement with
     any  Person who is not an  Affiliate  of the  Borrower  or the Agent or any
     Lender on  substantially  the terms which would apply hereunder  during the
     period from the then applicable  Final Maturity Date to the latest possible
     Extension   Maturity  Date,   provided  that  the  interest  rate  of  such
     Replacement  Financing  Arrangement  shall be no higher than the  Extension
     Period Interest Rate and, if no lesser interest rate is available, shall be
     the Extension Period Interest Rate.

          "Swap Rate" means the US-Dollar  denominated  interbank  interest rate
     swap  rates/LIBOR  offered  rates as shown on  Reuters  page ICAP and other
     comparable  brokerage  pages,  adjusted for the chosen interest rate method
     (annual/semi-annual compounding, etc.).

     3. The definition of "Change of Control Date" in Section 1.01 of the Credit
Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Change of Control  Date" means the date of  occurrence of a Change of
     Control;  provided,  that if such  occurrence  is on or prior to January 1,
     2001, the occurrence shall be deemed to have occurred on January 1, 2001.

     4. The  definition  of  "Eligible  Assignee"  in Section 1.01 of the Credit

<PAGE>   2

Agreement is hereby  deleted in its entirety and the following is substituted in
lieu thereof:

          "Eligible  Assignee"  means any Person approved by all of the Lenders;
     provided,  however,  that neither the Borrower  nor any  Subsidiary  of the
     Borrower shall qualify as an Eligible Assignee.

     5. The definition of "Final Maturity Date" set forth in Section 1.01 of the
Credit  Agreement  is  hereby  deleted  in its  entirety  and the  following  is
substituted in lieu thereof:

          "Final  Maturity  Date"  means the  earlier of (a) either the  Initial
     Maturity Date or, if  applicable,  the Extension  Maturity Date and (b) the
     termination in whole of the Commitments pursuant to Section 2.04 or Section
     6.01.

     6. Section 2.03 of the Credit Agreement shall be amended as follows: in the
fifth line, "1/8 of 1%" is hereby deleted and "1/4 of 1%" is substituted in lieu
thereof.

     7.  Section  2.06(a)  of the  Credit  Agreement  is hereby  deleted  in its
entirety and the following is substituted in lieu thereof:

          "(a)  Interest on the  Advances.  From  September 1, 1998,  until such
     principal  amount shall be paid in full, the Borrower shall pay interest on
     the unpaid principal  amount of the Advances,  if any, which interest shall
     be payable semiannually on each June 15th and December 15th, at an interest
     rate per annum equal to 9.610%;  provided,  however,  that,  if the Initial
     Maturity Date is on or after  January 1, 2001, as of the date  occurring 45
     Business Days after the Change of Control Date, the interest rate per annum
     shall be the higher of (x) 9.610% and (y) the rate determined  under clause
     (a) of the definition of Extension  Period Interest Rate,  determined as of
     the Change of Control Date (rather than the Initial  Maturity  Date),  plus
     the Applicable Spread;  provided,  that in the event of an extension of the
     then applicable Final Maturity Date to the Extension Maturity Date pursuant
     to Section 2.15 hereto, from the then applicable Final Maturity Date to the
     Extension  Maturity Date, the interest rate per annum shall be equal to the
     Extension Period Interest Rate."

     8. Section 2.07  (Interest  Rate  Determination  Upon Change of Control) is
hereby deleted in its entirety and the following is substituted in lieu thereof:
"SECTION 2.07. RESERVED."

     9. The  following  Section 2.15 is hereby added at the end of Article II of
the Credit Agreement:

          "SECTION 2.15.  Extension.  If the then applicable Final Maturity Date
     is a date on or before  December  31, 2000 and the Borrower may desire that
     the Lenders extend the then applicable Final Maturity Date to the Extension
     Maturity Date, then (a) the Borrower shall give written notice of said fact
     (the "Extension Request Notice") to the Agent and the Lenders no later than
     four (4) months before the Final  Maturity Date, (b) the Borrower shall use
     its best  efforts  to obtain  and enter into on or before the date which is
     two  months  prior  to the  Final  Maturity  Date a  Replacement  Financing
     Arrangement  and  (c)  if  the  Borrower  shall  not  have  entered  into a
     Replacement Financing Arrangement on or before the date which is two months
     prior to the Final  Maturity  Date, the Borrower shall deliver to the Agent
     and the Lenders a certificate of the Borrower (the "Extension Certificate")
     (x)  certifying  that  the  Borrower  has not  entered  into a  Replacement
     Financing  Arrangement,  but the Borrower used its best efforts to do so as
     required by clause (b) and setting forth such  evidence and back-up  detail
     as necessary to  demonstrate  the efforts made,  including a written letter
     from each bank from which a Replacement  Financing  Arrangement as required
     by clause (b) was requested,  indicating  that Borrower made such a request
     and that the request was denied, and (y) requesting that the Final Maturity
     Date be extended  to the  Extension  Maturity  Date.  For  purposes of this
     Section, the Borrower shall be deemed to have complied with the requirement
     to use its "best efforts" by requesting from and, if applicable, diligently
     negotiating a Replacement  Financing  Arrangement as required by clause (b)
     with each of three (3) commercial  banks that are nationally  recognized in
     the United States and each have total assets in excess of  $20,000,000,000.
     The Agent shall have the right to designate,  within ten (10) Business Days
     after  receipt  of an  Extension  Request  Notice,  one of the three  banks
     referred  to in the  preceding  sentence.  For  purposes  of this  Section,
     diligent  negotiation  shall mean  negotiation  in good  faith and  without
     denial or unreasonable delay of any reasonable request by any such bank for
     information in connection with its consideration of providing a Replacement
     Financing  Arrangement  to Borrower.  For the  avoidance of doubt,  nothing
     herein is  intended  to  prevent  Borrower  from  obtaining  a  Replacement
     Financing  Arrangement  on terms  equal to or better  than  those  provided
     hereunder.

          Following receipt of the Extension  Certificate,  the Agent and/or the
     Lenders  shall have the right  (without any  obligation to do so) to obtain
     for the Borrower a Replacement  Financing  Arrangement on terms equal to or
     better than those provided hereunder.

          If the Borrower has (a) delivered the Extension  Request Notice within
     the time period  specified  above,  (b) used its best efforts to obtain and

<PAGE>   3

     enter into a Replacement  Financing Arrangement and delivered the Extension
     Certificate within the time period specified above and (c) not unreasonably
     or in bad faith refused to enter into a Replacement  Financing  Arrangement
     (with terms equal to or better than those provided  hereunder) obtained for
     the Borrower by the Agent or any of the Lenders  pursuant to the  preceding
     paragraph,  the Final  Maturity  Date shall be  extended  to the  Extension
     Maturity Date and the interest rate shall be the Extension  Period Interest
     Rate.  The Agent shall provide the Borrower with a written  notice  setting
     forth the Extension Period Interest Rate.

          The Borrower  shall be  responsible  for the payment of any  customary
     commitment  fee and other fees in connection  with  obtaining a Replacement
     Financing Arrangement.

          For the  avoidance of doubt,  in no event shall an Extension  Maturity
     Date be requested by the Borrower  after  December 31, 2000 or be on a date
     after December 31, 2001."

     10. Section 5.02 of the Credit Agreement is deleted in its entirety and the
following is substituted in lieu thereof:

          "SECTION 5.02. Negative Covenants.  On and after September 1, 1998 and
     so long as any Advance  shall  remain  unpaid or any Lender  shall have any
     Commitment  hereunder,  the  Borrower  will not,  unless the Lenders  shall
     otherwise consent in writing:

               (a) Liens,  etc.  Create or suffer to exist, or permit any of its
          Subsidiaries to create or suffer to exist, any lien, security interest
          or other  charge or  encumbrance,  or any other  type of  preferential
          arrangement,  upon or with respect to any of its  properties,  whether
          now owned or  hereafter  acquired,  or  assign,  or permit  any of its
          Subsidiaries to assign,  any right to receive income,  in each case to
          secure any Debt of any Person, other than:

                    (i)  purchase   money  liens  or  purchase   money  security
               interests  upon  or in  any  property  acquired  or  held  by the
               Borrower or any Subsidiary in the ordinary  course of business to
               secure  the  purchase   price  of  such  property  or  to  secure
               indebtedness  incurred  solely for the purpose of  financing  the
               acquisition of such property;

                    (ii) liens or security  interests  existing on such property
               at the time of its  acquisition  (other  than  any  such  lien or
               security interest created in contemplation of such acquisition);

                    (iii) liens for taxes, assessments and government charges or
               levies  to the  extent  not  required  to be paid  under  Section
               5.01(b) hereof;

                    (iv)   liens   imposed  by  law,   such  as   materialmen's,
               mechanics',  carriers', workmen's and repairmen's liens and other
               similar liens arising in the ordinary course of business securing
               obligations  that are not  overdue  for a period  of more than 30
               days;

                    (v) pledges or deposits to secure obligations under workers'
               compensation  laws or similar  legislation or to secure public or
               statutory obligations;

                    (vi)  easements,  rights  of way and other  encumbrances  on
               title to real  property  that do not render title to the property
               encumbered  thereby  unmarketable or materially  adversely affect
               the use of such property for its present purposes; and

                    (vii) liens incurred or deposits made in the ordinary course
               of business to secure the performance of letters of credit, bids,
               tenders, sales contracts,  leases, surety, appeal and performance
               bonds and other  similar  obligations  not incurred in connection
               with the borrowing of money;

          provided,  that the  aggregate  principal  amount of the  Debt,  other
          indebtedness,  taxes,  assessments,  governmental charges or levies or
          other obligations  secured by the liens or security interests referred
          to in clauses  (i) through  (vii) of this  Section  5.02(a)  shall not
          exceed $45,000,000 in the aggregate at any time outstanding.

               (b)  Accounting  Changes.  Make or  permit,  or permit any of its
          Subsidiaries to make or permit,  any change in accounting  policies or
          reporting   practices,   except  as  allowed  by  generally   accepted
          accounting principles."

     11. Unless otherwise  provided herein,  any term in initial capital letters
or all  capital  letters  used as a defined  term but not  defined in this First
Amendment shall have the meaning set forth in the Credit Agreement.

     12.  Except as  modified  herein,  all terms and  conditions  of the Credit
Agreement shall remain in full force and effect.

     13. This First  Amendment shall be governed by, and construed in accordance

<PAGE>   4

with, the laws of the State of New York.

     14. This First Amendment may be executed in any number of counterparts  and
by  different  parties  hereto in separate  counterparts,  each of which when so
executed  shall be deemed an  original  and all of which  taken  together  shall
constitute one and the same agreement. Delivery of any executed counterpart of a
signature  page to this First  Amendment  by  telecopier  shall be  effective as
delivery of a manually executed counterpart of this First Amendment.

     IN WITNESS WHEREOF,  the parties hereto have caused this First Amendment to
be executed by their duly authorized representatives effective as of the day and
year first above written.


MEMC ELECTRONIC MATERIALS, INC., as Borrower


By: /s/ Kenneth L. Young
    ---------------------------------
      Name:  Kenneth L. Young
      Title: Treasurer


HULS CORPORATION, as Agent


By: /s/ H. J. Biangardi
    ---------------------------------
      Name:  H. J. Biangardi
      Title: President and CEO


By: /s/ John Schaffner
    ---------------------------------
      Name:  John Schaffner for Mitchell Solomowitz
      Title: Treasurer


HULS CORPORATION, as the sole Lender


By: /s/ H. J. Biangardi
    ---------------------------------
      Name:  H. J. Biangardi
      Title: President and CEO


By: /s/ John Schaffner
    ---------------------------------
      Name:  John Schaffner for Mitchell Solomowitz
      Title: Treasurer

<PAGE>   1
                                                               EXHIBIT 10-XXX(1)
                        FIRST AMENDMENT TO LOAN AGREEMENT

     This First Amendment to Loan Agreement ("First  Amendment") is effective as
of  September  1, 1998  between  MEMC  ELECTRONIC  MATERIALS,  INC.,  a Delaware
corporation,  as the Borrower (the "Borrower"),  and Huls Corporation, a company
formed under the laws of the State of Delaware, U.S.A. ("Huls").

                                    Recitals

     WHEREAS,  Borrower and Huls entered into a Loan Agreement  dated as of June
30,  1998 (the "Loan  Agreement")  pursuant to which Huls agreed to extend up to
US$50,000,000 of credit to Borrower on a term basis;

     WHEREAS,  Borrower,  Huls and  certain  affiliates  of Huls have  agreed to
extend additional  credit to Borrower and to restructure the existing  financing
provided by Huls and its affiliates to Borrower, and

     WHEREAS, as part of such restructuring,  Borrower and Huls desire to change
the interest  rate  payable by Borrower to Huls and the maturity  date under the
Loan Agreement.

     NOW THEREFORE,  in consideration  of the foregoing  premises and the mutual
covenants and conditions hereinafter set forth, the parties agree as follows:

     1. Amendment and  Restatement.  The Loan Agreement  (including all Exhibits
thereto) is hereby  amended and restated in its entirety as set forth in ANNEX A
attached hereto and incorporated by reference herein.

     2.  Counterparts.  This First  Amendment  may be  executed in any number of
counterparts and by different parties hereto in separate  counterparts,  each of
which  when so  executed  shall be deemed  an  original  and all of which  taken
together shall  constitute one and the same agreement.  Delivery of any executed
counterpart of a signature page to this First  Amendment by telecopier  shall be
effective  as  delivery  of  a  manually  executed  counterpart  of  this  First
Amendment.

     3. Governing Law. This First  Amendment shall be governed by, and construed
in accordance with, the laws of the State of New York.

     IN WITNESS  WHEREOF,  the parties to this First Amendment have caused it to
be executed by their duly authorized representatives effective as of the day and
year first above written.


MEMC ELECTRONIC MATERIALS, INC.


By: /s/ Kenneth L. Young
    ____________________________
    Name:  Kenneth L. Young
    Title: Treasurer


HULS CORPORATION


By: /s/ H. J. Biangardi
    ____________________________
    Name:  H. J. Biangardi
    Title: President and CEO


By: /s/ John Schaffner
    ____________________________
    Name:  John Schaffner for Mitchell Solomowitz
    Title: Treasurer

<PAGE>   2
                                                                         Annex A

                       AMENDED AND RESTATED LOAN AGREEMENT

                         Dated as of September 23, 1998

     MEMC ELECTRONIC MATERIALS,  INC., a Delaware  corporation,  as the borrower
(the  "Borrower"),  and HULS  CORPORATION,  a company  formed  under the laws of
Delaware  ("HULS"),  as the initial  lender (the "Initial  Lender") and as agent
(together with any successor appointed pursuant to Article VII, the "Agent") for
the Lenders (as hereinafter defined), hereby agree as follows:

                              Preliminary Statement

     WHEREAS  (i) the  parties to the Loan  Agreement  dated as of June 30, 1998
(the  "Original  Loan  Agreement")  wish to amend and restate the Original  Loan
Agreement and (ii) as of the date hereof,  Advances in the amount of $35,000,000
have been drawn under the Original Loan  Agreement,  the Original Loan Agreement
is hereby amended and restated in its entirety.


                                    ARTICLE I
                        DEFINITIONS AND ACCOUNTING TERMS

     SECTION  1.01.  Certain  Defined  Terms.  As used in  this  Agreement,  the
following  terms shall have the following  meanings (such meanings to be equally
applicable to both the singular and plural forms of the terms defined):

          "Advance" has the meaning specified in Section 2.01.

          "Affiliate" means, as to any Person,  any other Person that,  directly
     or indirectly,  controls,  is controlled by or is under common control with
     such Person or is a director  or officer of such  Person.  For  purposes of
     this  definition,  the term "control"  (including the terms  "controlling",
     "controlled  by" and "under  common  control  with") of a Person  means the
     possession,  direct  or  indirect,  of the  power to vote 5% or more of the
     voting  stock of such  Person or to direct  or cause the  direction  of the
     management  and policies of such Person,  whether  through the ownership of
     voting stock, by contract or otherwise.

          "Agent"  has the meaning  specified  in the recital of parties to this
     Agreement.

          "Agent's  Account"  means the Dollar  account of the Agent  maintained
     with such bank as the Agent shall  specify in writing to the  Borrower  and
     the Lenders from time to time.

          "Applicable  Spread" means a percentage  per annum equal to the excess
     of (a) the Bloomberg  fair market  sector  curves  (adjusted for the chosen
     interest  rate method)  applicable  two  business  days prior to October 1,
     1998,  to a B3 rated  industrial  borrower  for the period from  October 1,
     1998, through the latest possible Termination Date (taking into account, if
     applicable,   the  latest   Extension   Termination   Date)  over  (b)  the
     corresponding Swap Rate for such period.

          "Assignment and Acceptance" means an assignment and acceptance entered
     into by a Lender and an Eligible  Assignee  and  accepted by the Agent,  in
     substantially the form of Exhibit C hereto.

          "Bank" means any Lender other than the Initial Lender or any Affiliate
     of the Initial Lender.

          "Borrower" has the meaning specified in the recital of parties to this
     Agreement.

          "Borrowing" means the borrowing consisting of the Advances made by the
     Lenders.

          "Borrowing Notice" has the meaning specified in Section 2.02(a).

          "Business Day" means a day of the year on which banks are not required
     or authorized by law to close in New York City.

          "Change of Control"  means the Initial  Lender or any Affiliate of the
     Initial  Lender,  through  any  transaction  or series of  transactions  or
     otherwise, no longer has beneficial ownership,  directly or indirectly,  of
     more than 50% of the shares of common stock of the Borrower.

          "Change of Control  Date" means the date of  occurrence of a Change of
     Control;  provided,  that if such  occurrence  is on or prior to January 1,
     2001, the occurrence shall be deemed to have occurred on January 1, 2001.

          "Commitment" has the meaning specified in Section 2.01.

          "Confidential   Information"   means  information  that  the  Borrower
     furnishes  to  the  Agent  or  any  Lender  in  a  writing   designated  as
     confidential,  but does not include any such information that is or becomes
     generally  available  to the public or that is or becomes  available to the
<PAGE>   3

     Agent or such Lender from a source other than the Borrower, an Affiliate of
     the Borrower or an Affiliate of the Initial Lender.

          "Consolidated"  refers to the  consolidation of accounts in accordance
     with GAAP.

          "Debt" means (a)  indebtedness  for borrowed  money,  (b)  obligations
     evidenced by bonds,  debentures,  notes or other similar  instruments,  (c)
     obligations to pay the deferred purchase price of property or services, (d)
     obligations  as lessee  under leases which shall have been or should be, in
     accordance  with  generally  accepted  accounting  principles,  recorded as
     capital leases, and (e) obligations under direct or indirect  guaranties in
     respect  of, and  obligations  (contingent  or  otherwise)  to  purchase or
     otherwise  acquire,  or  otherwise  to assure a  creditor  against  loss in
     respect of,  indebtedness or obligations of others of the kinds referred to
     in clause (a)  through (d) of this  definition;  provided,  however,  that,
     solely for purposes of  calculating  the Leverage  Ratio at any time,  Debt
     shall not include  obligations  of the  Borrower  under  direct or indirect
     guaranties  of  indebtedness  or  obligations  of  any  Subsidiary  of  the
     Borrower,  to the extent the  inclusion of any such  obligation  results in
     double-counting thereof.

          "Default"  means  any  Event  of  Default  or  any  event  that  would
     constitute an Event of Default but for the requirement that notice be given
     or time elapse or both.

          "Designated Maturity" means, with respect to the Advances comprising a
     Borrowing,  the period from the date of such Borrowing  until the Repayment
     Date for such Advances.

          "Dollars"  and the sign  "$" each  means  lawful  money of the  United
     States of America.

          "Domestic  Lending Office" means, with respect to any Bank, the office
     of such Bank specified as its "Domestic  Lending  Office" in the Assignment
     and Acceptance  pursuant to which it became a Lender,  or such other office
     of such Bank as such Bank may from time to time specify to the Borrower and
     the Agent.

          "EBIT" means,  with respect to the Borrower and its  Subsidiaries  for
     any period,  the sum of (a) net income (or net loss),  (b) interest expense
     and (c) income tax expense, in each case determined in accordance with GAAP
     for such period.

          "Effective Date" has the meaning specified in Section 3.01.

          "Eligible  Assignee"  means any Person approved by all of the Lenders;
     provided,  however,  that neither the Borrower  nor any  Subsidiary  of the
     Borrower shall qualify as an Eligible Assignee.

          "ERISA" means the Employee  Retirement Income Security Act of 1974, as
     amended  from time to time,  and the  regulations  promulgated  and rulings
     issued thereunder.

          "Events of Default" has the meaning specified in Section 6.01.

          "Extension Certificate" has the meaning specified in Section 2.15.

          "Extension Request Notice" has the meaning set forth in Section 2.15.

          "Extension  Termination Date", if any, means the earlier of (a) either
     (i) the first  anniversary of October 1, 1999, or (ii) if there has been an
     applicable Extension Termination Date on or prior to December 31, 2000, the
     first  anniversary  of such prior  Extension  Termination  Date and (b) the
     termination in whole of the Commitments pursuant to Section 2.04 or Section
     6.01;  provided,  that in no event shall an Extension  Termination  Date be
     after October 1, 2001.

          "GAAP" has the meaning specified in Section 1.03.

          "Governmental Authority" means any nation or government,  any state or
     other  political  subdivision  thereof,  and any federal,  state,  local or
     foreign   court  or   governmental,   executive,   legislative,   judicial,
     administrative    or    regulatory    agency,    department,     authority,
     instrumentality, commission, board or similar body.

          "Indemnified Party" has the meaning specified in Section 8.04(b).

          "Initial  Lender" has the meaning  specified in the recital of parties
     to this Agreement.

          "Interest  Coverage Ratio" means, with respect to the Borrower and its
     Subsidiaries  on a  Consolidated  basis  for any  period,  a  ratio  of (a)
     Consolidated  EBIT of the Borrower and its  Subsidiaries for such period to
     (b) interest payable on all Debt during such period.

          "Interest  Rate" means two business days prior to October 1, 1998, the
     Swap Rate for the 36-month period commencing from October 1, 1998, plus the
     Applicable Spread.
<PAGE>   4

          "Lender"  means the Initial Lender and each Person that shall become a
     party hereto pursuant to Section 8.07.

          "Leverage  Ratio"  means,   with  respect  to  the  Borrower  and  its
     Subsidiaries at any date of  determination,  the ratio of (a)  Consolidated
     Debt of the Borrower and its  Subsidiaries at such date to (b) Consolidated
     net worth of the Borrower and its Subsidiaries at such date.

          "Material  Adverse  Change" means any material  adverse  change in the
     business,  condition  (financial or  otherwise),  operations,  performance,
     properties   or   prospects  of  the  Borrower  or  the  Borrower  and  its
     Subsidiaries taken as a whole.

          "Moody's" means Moody's Investors Service, Inc.

          "Note" means a promissory note of the Borrower payable to the order of
     any Lender,  substantially in the form of Exhibit A hereto,  evidencing the
     Debt of the Borrower to such Lender resulting from the Advance made by such
     Lender.

          "Other Taxes" has the meaning specified in Section 2.12(b).

          "Person" means an individual,  partnership,  corporation  (including a
     business trust), joint stock company,  trust,  unincorporated  association,
     joint venture,  limited  liability company or other entity, or a government
     or any political subdivision or agency thereof.

          "Reference  Banks"  means,  collectively,   no  more  than  two  banks
     designated  by the  Agent  and no more  than two  banks  designated  by the
     Borrower for the purpose of determining the Applicable Margin.

          "Register" has the meaning specified in Section 8.07(c).

          "Repayment  Date" means,  with  respect to the  Advances  comprising a
     Borrowing,  the date specified by the Borrower in the Borrowing  Notice for
     such  Borrowing  on  which  the  Borrower  agrees  to repay  the  aggregate
     principal amount of the Advances  comprising such Borrowing;  provided that
     such date shall not be later than the Termination Date.

          "Replacement Financing Arrangement" means a financing arrangement with
     any  Person who is not an  Affiliate  of the  Borrower  or the Agent or any
     Lender on  substantially  the terms which would apply hereunder  during the
     period from the then  applicable  Termination  Date to the latest  possible
     Extension  Termination  Date,  provided  that  the  interest  rate  of such
     Replacement Financing Arrangement shall be no higher than the Interest Rate
     and, if no lesser interest rate is available, shall be the Interest Rate.

          "Senior  Debt  Rating"  means,  as of the date of  determination,  the
     rating assigned in writing by either S&P or Moody's,  at the request of the
     Initial Lender for the long-term senior unsecured debt of the Borrower.

          "S&P"  means   Standard  &  Poor's   Ratings   Group,  a  division  of
     McGraw-Hill, Inc.

          "Subsidiary" of any Person means any corporation,  partnership,  joint
     venture,  limited liability company, trust or estate of which (or in which)
     more  than 50% of (a) the  issued  and  outstanding  capital  stock  having
     ordinary voting power to elect a majority of the board of directors of such
     corporation (irrespective of whether at the time capital stock of any other
     class or classes of such corporation  shall or might have voting power upon
     the  occurrence  of any  contingency),  (b) the  interest in the capital or
     profits of such limited liability company,  partnership or joint venture or
     (c) the beneficial interest in such trust or estate is at the time directly
     or indirectly owned or controlled by such Person, by such Person and one or
     more of its other  Subsidiaries  or by one or more of such  Person's  other
     Subsidiaries;  provided,  however,  that the term  "Subsidiary"  shall  not
     include any joint  venture of the  Borrower  with  respect to any action or
     decision  of the board of  directors  of such joint  venture if, by written
     agreement,  such action or decision requires a vote in excess of the number
     of  members  of such  board  of  directors  elected  or  controlled  by the
     Borrower.

          "Swap Rate" means the US-Dollar  denominated  interbank  interest rate
     swap  rates/LIBOR  offered  rates as shown on  Reuters  page ICAP and other
     comparable  brokerage  pages,  adjusted for the chosen interest rate method
     (annual/semi-annual compounding, etc.).

          "Taxes" has the meaning specified in Section 2.12(a).

          "Termination Date" means the earlier of (a) either October 1, 1999 or,
     if applicable,  the Extension  Termination  Date and (b) the termination in
     whole of the Commitments pursuant to Section 2.04 or Section 6.01.

          "United States" and "U.S." each means the United States of America.

          The words "include,"  "includes" and "including" shall be deemed to be
     followed by the phrase "without limitation."
<PAGE>   5

          SECTION 1.02.  Computation  of Time Periods.  In this Agreement in the
     computation of periods of time from a specified  date to a later  specified
     date,  the word "from"  means "from and  including"  and the words "to" and
     "until" each means "to but excluding."

          SECTION 1.03.  Accounting Terms. All accounting terms not specifically
     defined  herein shall be construed in accordance  with  generally  accepted
     accounting  principles  consistent with those applied in the preparation of
     the financial statements referred to in Section 4.01(e) ("GAAP").


                                   ARTICLE II
                        AMOUNTS AND TERMS OF THE ADVANCES

     SECTION 2.01. The Advances.  Each Lender severally agrees, on the terms and
conditions  hereinafter  set forth, to make advances (each, an "Advance") to the
Borrower  from time to time on any  Business  Day  during  the  period  from the
Effective Date until the Termination  Date in an amount not to exceed the amount
set forth opposite such Lender's name on the signature  pages hereof or, if such
Lender has entered into any Assignment and Acceptance, set forth for such Lender
in the Register  maintained by the Agent  pursuant to Section  8.07(c),  as such
amount may be reduced  pursuant to Section  2.04 (such  Lender's  "Commitment").
Each  Borrowing  shall be in an aggregate  amount of  $10,000,000 or an integral
multiple of $5,000,000 in excess thereof and shall be made simultaneously by the
Lenders ratably according to their respective  Commitments.  The Borrower is not
entitled to reborrow any repaid or prepaid portion of any Advance.

     SECTION 2.02.  Making the  Advances.  (a) Each  Borrowing  shall be made on
notice,  given not  later  than  11:00  A.M.  (New York City  time) on the third
Business Day prior to the date of the proposed  Borrowing by the Borrower to the
Agent,  which shall give to each Lender prompt  notice  thereof by telecopier or
telex. Each notice of a Borrowing (a "Borrowing  Notice") shall be by telephone,
confirmed  immediately in writing,  or telecopier or telex, in substantially the
form of Exhibit B hereto,  specifying therein, among other things, the requested
date of such  Borrowing,  the amount of such Borrowing and the Repayment Date of
the Advances  comprising  such Borrowing.  Each Lender shall,  before 11:00 A.M.
(New York  City  time) on the date of such  Borrowing,  make  available  for the
account of its Domestic Lending Office to the Agent at the Agent's  Account,  in
same day funds,  such  Lender's  ratable  portion of such  Borrowing.  After the
Agent's receipt of such funds and upon fulfillment of the applicable  conditions
set forth in  Article  III,  the Agent  will make such  funds  available  to the
Borrower by  depositing  the proceeds of the Advances in such Dollar  account of
the Borrower (or of such Person as the Borrower  shall  specify to the Lender in
the  Borrowing   Notice  or  by  other  written   notice  to  the  Lender  given
simultaneously with or prior to such Borrowing Notice) maintained with such bank
as the Borrower shall specify to the Agent in such Borrowing Notice.

     The parties hereto understand and agree that the Initial Lender may, in its
sole  discretion  (but shall  have no  obligation  to),  designate  a  financial
institution  or  another  Person to perform  the  Initial  Lender's  obligations
hereunder  in  accordance  with the  terms  hereof.  The  Borrower  agrees  that
performance  of any such  obligation by any such designee of the Initial  Lender
shall be deemed to constitute performance by the Initial Lender for all purposes
of this Agreement and the Note and shall  discharge the Initial Lender from such
obligation to the extent of such performance.

     (b) Any  Borrowing  Notice  delivered by the Borrower to the Agent shall be
irrevocable  and binding on the  Borrower.  The Borrower  shall  indemnify  each
Lender against any loss, cost or expense  incurred by such Lender as a result of
any failure to fulfill on or before the date specified in such Borrowing  Notice
for  such  Borrowing  the  applicable  conditions  set  forth  in  Article  111,
including, without limitation, any loss (including loss of anticipated profits),
cost or  expense  incurred  by  reason of the  liquidation  or  reemployment  of
deposits or other  funds  acquired by such Lender to fund the Advance to be made
by such Lender as part of such Borrowing when such Advance,  as a result of such
failure, is not made on such date.

     (c) The Agent shall only make  available to the Borrower on the date of any
Borrowing the ratable  portion of such Borrowing of each Lender that such Lender
has made available to the Agent on or prior to the date of such Borrowing.

     (d) The  failure of any Lender to make the Advance to be made by it as part
of any Borrowing shall not relieve any other Lender of its  obligation,  if any,
hereunder to make its Advance on the date of such Borrowing, but no Lender shall
be  responsible  for the  failure of any other  Lender to make the Advance to be
made by such other Lender on the date of any Borrowing.

     SECTION 2.03.  Commitment  Fee. The Borrower agrees to pay to the Agent for
the  account  of each  Lender a  commitment  fee on the  unused  portion of such
Lender's  Commitment  from the Effective  Date in the case of the Initial Lender
and from the effective date specified in the Assignment and Acceptance  pursuant
to  which it  became  a  Lender  in the  case of each  other  Lender  until  the
Termination  Date at a rate per annum  equal to 1/4 of 1%,  payable  in  arrears
quarterly  on  the  last  day of  each  March,  June,  September  and  December,
commencing December 31, 1998, and on the Termination Date.

     SECTION 2.04.  Optional  Termination or Reduction of the  Commitments.  The
Borrower shall have the right,  upon at least three Business Days' notice to the
Agent,  to  terminate in whole or reduce in part the unused  Commitments  of the
<PAGE>   6

Lenders,  provided  that  each  partial  reduction  shall  be in the  amount  of
$1,000,000 or an integral multiple of $1,000,000 in excess thereof.

     SECTION  2.05.  Repayment.  The  Borrower  shall repay to the Agent for the
ratable  account of the Lenders the aggregate  principal  amount of the Advances
then  outstanding  comprising  each  Borrowing  on the  Repayment  Date for such
Borrowing.

     SECTION 2.06.  Interest.  (a) Interest on the Advances.  The Borrower shall
pay interest on the unpaid principal amount of the Advances,  if any, until such
principal  amount  shall be paid in full at an interest  rate equal to (i) until
and  including  September 30, 1998,  7.220% and (ii) as of October 1, 1998,  the
Interest Rate, which interest shall be payable  semiannually on each April 1 and
October 1, at an interest rate per annum equal to the Interest Rate.

     (b) Interest on Overdue Amounts.  In the event that any principal amount of
any Advance or any interest,  fees,  costs,  expenses or other  amounts  payable
hereunder are not paid when due, the Borrower  shall pay interest on such unpaid
amount  from the date such  amount is due until the date such  amount is paid in
full,  payable on demand,  at an interest  rate per annum equal to the  interest
rate referred to in subsection (a) of this Section 2.06 then in effect plus 2%.

     SECTION 2.07. Reserved.

     SECTION 2.08. Reserved.

     SECTION 2.09.  Increased Costs,  Etc. If due to either (a) the introduction
of or any change (including, without limitation, any change by way of imposition
or increase of reserve  requirements) in or in the  interpretation of any law or
regulation or (b) the compliance  with any guideline or request from any central
bank or other  Governmental  Authority (whether or not having the force of law),
there  shall be any  increase  in the cost to any  Bank of  agreeing  to make or
making,  funding or maintaining an Advance, then the Borrower shall from time to
time, upon demand by such Bank (with a copy of such demand to the Agent), pay to
the Agent  for the  account  of such  Bank  additional  amounts  sufficient  (as
applicable) to compensate such Bank for such increased cost. A certificate as to
the amount of such increased cost, submitted to the Borrower by such Bank, shall
be conclusive and binding for all purposes, absent manifest error.

     SECTION  2.10.  Illegality.  Notwithstanding  any other  provision  of this
Agreement, if any Bank shall notify the Borrower that any law or regulation,  or
the  introduction  of or any  change in or in the  interpretation  of any law or
regulation,  makes  it  unlawful,  or any  central  bank or  other  Governmental
Authority asserts that it is unlawful,  for such Bank to perform its obligations
hereunder  to make an Advance or to fund or maintain an Advance  hereunder,  (a)
the  obligation  of such Bank to make,  fund and maintain  any Advance  shall be
suspended  until such Bank  shall  notify the  Borrower  that the  circumstances
causing such suspension no longer exist, (b) such Bank shall promptly notify the
Borrower of such circumstances and such suspension,  and (c) unless the Borrower
and such Bank shall have  otherwise  agreed  within  ten  Business  Days of such
notice,  the Borrower shall  forthwith on such tenth Business Day prepay in full
the Advances then outstanding together with interest accrued thereon.

     SECTION 2.11.  Payments and Computations.  (a) The Borrower shall make each
payment  hereunder  and under the Notes not later than 1:00 P.M.  (New York City
time) on the day when due in Dollars  to the Agent at the  Agent's  Account,  in
each case in immediately  available  funds.  The Agent will promptly  thereafter
cause to be  distributed  like funds  relating  to the payment of  principal  or
interest or fees ratably (other than amounts  payable  pursuant to Section 2.09,
2.12 or 8.04(c)) to the  Lenders  for the account of their  respective  Domestic
Lending  Offices,  and like funds  relating to the  payment of any other  amount
payable to any Lender to such  Lender for the  account of its  Domestic  Lending
Office,  in each  case to be  applied  in  accordance  with  the  terms  of this
Agreement.  Upon its acceptance of an Assignment and Acceptance and recording of
the information  contained  therein in the Register pursuant to Section 8.07(d),
from and after the effective date specified in such  Assignment and  Acceptance,
the Agent shall make all  payments  hereunder  and under the Notes in respect of
the interest assigned thereby to the Lender assignee thereunder, and the parties
to such Assignment and Acceptance shall make all appropriate adjustments in such
payments for periods prior to such effective date directly between themselves.

     (b) All computations of interest and of fees shall be made in good faith by
the  Agent on the  basis of a year of 360 days  for the  actual  number  of days
(including the first day but excluding the last day) occurring in the period for
which such interest or fees are payable.

     (c) Whenever any payment hereunder or under the Notes shall be stated to be
due on a day other than a Business  Day,  such payment shall be made on the next
succeeding  Business  Day,  and such  extension  of time  shall in such  case be
included in the computation of payment of interest or fee, as the case may be.

     (d) Unless the Agent shall have received  notice from the Borrower prior to
the date on which any payment is due to the Lenders  hereunder that the Borrower
will not make such  payment in full,  the Agent may assume that the Borrower has
made  such  payment  in full to the Agent on such  date and the  Agent  may,  in
reliance upon such  assumption,  cause to be  distributed to each Lender on such
due date an  amount  equal to the  amount  then due such  Lender.  If and to the
extent the  Borrower  shall not have so made such  payment in full to the Agent,
each Lender shall repay to the Agent forthwith on demand such amount distributed
<PAGE>   7

to such Lender together with interest  thereon,  for each day from the date such
amount is  distributed  to such Lender  until the date such  Lender  repays such
amount to the Agent, at the Federal Funds Rate.

     SECTION 2.12. Taxes. (a) Any and all payments by the Borrower  hereunder or
under the Notes shall be made in accordance with Section 2.11, free and clear of
and without deduction for any and all present or future taxes, levies,  imposts,
deductions,  charges or withholdings,  and all liabilities with respect thereto,
excluding,  in the case of each Lender and the Agent,  net income taxes that are
imposed by the United States and net income taxes (or franchise taxes imposed in
lieu  thereof)  that are  imposed  on such  Lender  or the Agent by the state or
foreign  jurisdiction  under the laws of which such  Lender or the Agent (as the
case may be) is organized or any political  subdivision thereof and, in the case
of each Lender,  net income taxes (or  franchise  taxes imposed in lieu thereof)
that are  imposed on such  Lender by the state or foreign  jurisdiction  of such
Lender's Domestic Lending Office or any political  subdivision thereof (all such
nonexcluded  taxes,  levies,  imposts,  deductions,  charges,  withholdings  and
liabilities  in  respect  of  payments   hereunder  or  under  the  Notes  being
hereinafter referred to as "Taxes"). If the Borrower shall be required by law to
deduct any Taxes from or in respect of any sum  payable  hereunder  or under any
Note, (i) the sum payable shall be increased as may be necessary so that,  after
making all required deductions  (including  deductions  applicable to additional
sums payable  under this  Section  2.12),  such Lender or the Agent  receives an
amount equal to the sum it would have received had no such deductions been made,
(ii) the Borrower  shall make such  deductions  and (iii) the Borrower shall pay
the full amount deducted to the relevant  taxation  authority or other authority
in accordance with applicable law.

     (b) In  addition,  the  Borrower  shall pay any  present  or future  stamp,
documentary,  excise, property or other taxes, charges or levies that arise from
any payment made hereunder or under the Notes or from the execution, delivery or
registration  of, or  otherwise  with  respect to, this  Agreement  or the Notes
(hereinafter referred to as "Other Taxes").

     (c) The  Borrower  shall  indemnify  each Lender and the Agent for the full
amount of Taxes or Other  Taxes and for the full  amount of Taxes or Other Taxes
imposed by any  jurisdiction  on amounts payable under this Section 2.12 imposed
on or paid by such  Lender or the  Agent  (as the case may be) or any  liability
(including penalties, additions to tax, interest and expenses) arising therefrom
or with respect thereto, whether or not such Taxes or Other Taxes were correctly
or legally asserted.  This indemnification shall be made within 30 days from the
date such Lender or the Agent makes written demand therefor.

     (d) Within 30 days after the date of any  payment  of Taxes,  the  Borrower
shall  furnish to the Agent,  at its address  referred to in Section  8.02,  the
original receipt of payment or a certified copy of such receipt. If no Taxes are
payable in respect of any payment  hereunder  or under the Notes,  the  Borrower
shall furnish to the Agent, at such address, a certificate from each appropriate
taxing authority,  or an opinion of counsel acceptable to the Lenders, in either
case stating that such payment is exempt from or not subject to Taxes.

     (e) Each  Lender  organized  under the laws of a  jurisdiction  outside the
United States shall, on the Effective Date in the case of the Initial Lender and
on the date of the  Assignment  and  Acceptance  pursuant  to which it  became a
Lender in the case of each other  Lender,  and from time to time  thereafter  if
requested  in  writing  by the  Borrower  or the Agent (but only so long as such
Lender  remains  lawfully  able to do so),  provide each of the Borrower and the
Agent with Internal  Revenue Service form 1001 or 4224, as  appropriate,  or any
successor or other form prescribed by the Internal Revenue  Service,  certifying
that such Lender is exempt from or entitled to a reduced  rate of United  States
withholding tax on payments of interest pursuant to this Agreement or the Notes.
If the form  provided by such Lender at the time such Lender  becomes a party to
this Agreement indicates a United States interest withholding tax rate in excess
of zero,  withholding  tax at such rate shall be considered  excluded from Taxes
unless and until such Lender  provides the  appropriate  form  certifying that a
lesser rate applies, whereupon withholding tax at such lesser rate only shall be
considered  excluded  from Taxes for periods  governed  by such form;  provided,
however, that, if at the date of the Assignment and Acceptance pursuant to which
a Lender becomes a party to this Agreement,  the Lender assignor was entitled to
payments under Section 2.12(a) in respect of United States  withholding tax with
respect to interest  paid at such date,  then,  to such  extent,  the term Taxes
shall  include  (in  addition  to  withholding  taxes that may be imposed in the
future or other amounts otherwise includable in Taxes) United States withholding
tax, if any, applicable with respect to the Lender assignee on such date. If any
form or document  referred to in this  subsection (e) requires the disclosure of
information,  other than  information  necessary  to compute the tax payable and
information required on the date hereof by Internal Revenue Service form 1001 or
4224, that the Lender reasonably considers to be confidential,  the Lender shall
give notice  thereof to the  Borrower  and shall not be  obligated to include in
such form or document such confidential information.

     (f) For any period with respect to which a Lender has failed to provide the
Borrower with the  appropriate  form described in Section 2.12(e) (other than if
such failure is due to a change in law occurring subsequent to the date on which
a form originally was required to be provided,  or if such form otherwise is not
required under the first sentence of Section 2.12(e)  above),  such Lender shall
not be entitled to  indemnification  under Section 2.12(a) with respect to Taxes
imposed by the United States; provided,  however, that should such Lender become
subject to Taxes  because of its failure to deliver a form  required  hereunder,
<PAGE>   8

the Borrower  shall take such steps as such Lender shall  reasonably  request to
assist such Lender to recover such Taxes.

     SECTION  2.13.  Sharing of  Payments,  Etc. If any Lender  shall obtain any
payment (whether  voluntary,  involuntary,  through the exercise of any right of
setoff, or otherwise) on account of the Advance owing to it (other than pursuant
to Section 2.09,  2.12 or 8.04(c)) in excess of its ratable share of payments on
account of the Advances obtained by all the Lenders, such Lender shall forthwith
purchase from the other  Lenders such  participations  in the Advances  owing to
them as shall be necessary to cause such  purchasing  Lender to share the excess
payment ratably with each of them; provided, however, that if all or any portion
of such excess payment is thereafter recovered from such purchasing Lender, such
purchase  from each Lender shall be rescinded and such Lender shall repay to the
purchasing  Lender the purchase  price to the extent of such  recovery  together
with an amount equal to such Lender's ratable share (according to the proportion
of (a) the amount of such Lender's required repayment to (b) the total amount so
recovered  from the  purchasing  Lender) of any interest or other amount paid or
payable by the  purchasing  Lender in respect of the total amount so  recovered.
The Borrower agrees that any Lender so purchasing a  participation  from another
Lender  pursuant to this  Section 2.13 may, to the fullest  extent  permitted by
law,  exercise  all its rights of payment  (including  the right of setoff) with
respect  to such  participation  as fully  as if such  Lender  were  the  direct
creditor of the Borrower in the amount of such participation.

     SECTION  2.14.  Use of  Proceeds.  The  proceeds of the  Advances  shall be
available (and the Borrower  agrees that it shall use such proceeds)  solely for
general corporate purposes of the Borrower and its Subsidiaries.

     SECTION 2.15. Extension.  If the then applicable Termination Date is a date
on or before  December  31,  2000 and the  Borrower  may desire that the Lenders
extend the then applicable  Termination Date to the Extension  Termination Date,
then (a) the  Borrower  shall give written  notice of said fact (the  "Extension
Request  Notice")  to the Agent and the  Lenders  no later  than four (4) months
before the  Termination  Date,  (b) the  Borrower  shall use its best efforts to
obtain and enter  into on or before  the date  which is two months  prior to the
Termination  Date a Replacement  Financing  Arrangement with an interest rate no
higher than the  Interest  Rate and (c) if the  Borrower  shall not have entered
into a  Replacement  Financing  Arrangement  on or before  the date which is two
months prior to the  Termination  Date,  the Borrower shall deliver to the Agent
and the Lenders a certificate of the Borrower (the "Extension  Certificate") (x)
certifying  that the  Borrower  has not  entered  into a  Replacement  Financing
Arrangement,  but the  Borrower  used its best  efforts to do so as  required by
clause (b) and setting  forth such  evidence and back-up  detail as necessary to
demonstrate  the efforts  made,  including a written  letter from each bank from
which  a  Replacement  Financing  Arrangement  as  required  by  clause  (b) was
requested, indicating that Borrower made such a request and that the request was
denied,  and  (y)  requesting  that  the  Termination  Date be  extended  to the
Extension  Termination Date. For purposes of this Section, the Borrower shall be
deemed  to have  complied  with the  requirement  to use its "best  efforts"  by
requesting  from  and,  if  applicable,  diligently  negotiating  a  Replacement
Financing  Arrangement  as  required  by  clause  (b)  with  each of  three  (3)
commercial  banks that are  nationally  recognized in the United States and each
have total assets in excess of  $20,000,000,000.  The Agent shall have the right
to  designate,  within  ten (10)  Business  Days after  receipt of an  Extension
Request  Notice,  one of the three banks referred to in the preceding  sentence.
For purposes of this Section,  diligent  negotiation  shall mean  negotiation in
good faith and without denial or unreasonable delay of any reasonable request by
any such bank for information in connection with its  consideration of providing
a Replacement  Financing  Arrangement  to Borrower.  For the avoidance of doubt,
nothing  herein is intended to prevent  Borrower  from  obtaining a  Replacement
Financing Arrangement on terms equal to or better than those provided hereunder.

     Following  receipt  of the  Extension  Certificate,  the Agent  and/or  the
Lenders shall have the right (without any obligation to do so) to obtain for the
Borrower a Replacement  Financing  Arrangement  on terms equal to or better than
those provided hereunder.

     If the Borrower has (a) delivered the Extension  Request  Notice within the
time period  specified above, (b) used its best efforts to obtain and enter into
a  Replacement  Financing  Arrangement  with an interest rate no higher than the
Interest Rate and delivered  the  Extension  Certificate  within the time period
specified above and (c) not unreasonably or in bad faith refused to enter into a
Replacement  Financing  Arrangement  (with  terms  equal to or better than those
provided hereunder) obtained for the Borrower by the Agent or any of the Lenders
pursuant to the preceding  paragraph,  the Termination Date shall be extended to
the Extension Termination Date and the interest rate shall be the Interest Rate.

     The  Borrower  shall  be  responsible  for  the  payment  of any  customary
commitment  fee and  other  fees in  connection  with  obtaining  a  Replacement
Financing Arrangement.

     For the avoidance of doubt, in no event shall an Extension Termination Date
be requested by the Borrower after October 1, 2000 or be on a date after October
1, 2001.



                                   ARTICLE III
                     CONDITIONS TO EFFECTIVENESS AND LENDING
<PAGE>   9

     SECTION  3.01.  Conditions  Precedent  to  Effectiveness  of Section  2.01.
Section 2.01 of this  Agreement  shall  become  effective on and as of the first
date (the  "Effective  Date") on which the following  conditions  precedent have
been satisfied:

          (a) There shall have  occurred no Material  Adverse  Change since June
     30, 1998.

          (b) There shall exist no action,  suit,  investigation,  litigation or
     proceeding  affecting  the Borrower or any of its  Subsidiaries  pending or
     threatened in writing before any court,  governmental  agency or arbitrator
     that  (i) may  materially  adversely  affect  the  financial  condition  or
     operations of the Borrower or any of its  subsidiaries  or (ii) purports to
     affect the legality,  validity or  enforceability  of this Agreement or any
     Note or the consummation of the transactions contemplated hereby.

          (c) On the Effective Date, the following  statements shall be true and
     the Agent shall have  received a  certificate  signed by a duly  authorized
     officer of the Borrower, dated the Effective Date, stating that:

               (i) the representations and warranties  contained in Section 4.01
          are correct on and as of the Effective Date, and

               (ii) no event has occurred and is continuing  that  constitutes a
          Default.

          (d) The Agent shall have received on or before the Effective  Date the
     following,  each dated such date, in form and substance satisfactory to the
     Lenders (except for the Notes):

               (i) executed  counterparts  of this  Agreement  duly executed and
          delivered by the Borrower;

               (ii) the Notes to the order of the Lenders;

               (iii)  certified  copies  of  the  resolutions  of the  board  of
          directors of the Borrower  approving this Agreement and the Notes, and
          of all  documents  evidencing  other  necessary  corporate  action and
          governmental approvals, if any, with respect to this Agreement and the
          Notes; and

               (iv) a certificate of the Secretary or an Assistant  Secretary of
          the Borrower  certifying the names and true signatures of the officers
          of the Borrower  authorized  to sign this  Agreement and the Notes and
          the other documents to be delivered hereunder.

     SECTION 3.02.  Conditions  Precedent to each  Borrowing.  The obligation of
each  Lender to make an  Advance  on the  occasion  of each  Borrowing  shall be
subject to the conditions  precedent that the Effective Date shall have occurred
and on the date of such  Borrowing the following  statements  shall be true (and
each of the giving of the applicable  Borrowing Notice and the acceptance by the
Borrower of the proceeds of such Borrowing shall constitute a representation and
warranty by the Borrower that on the date of such Borrowing such  statements are
true):

          (a) the  representations  and  warranties  contained  in Section  4.01
     (other than the last sentence of subsection (e) thereof) are correct on and
     as of the date of such  Borrowing,  before and after giving  effect to such
     Borrowing and to the application of the proceeds therefrom,  as though made
     on and as of such date, and

          (b) no event has occurred and is continuing, or would result from such
     Borrowing  or  from  the  application  of  the  proceeds  therefrom,   that
     constitutes a Default.

     SECTION  3.03.   Determinations   Under  Section  3.01.   For  purposes  of
determining  compliance  with the  conditions  specified in Section  3.01,  each
Lender  shall be deemed to have  consented  to,  approved  or  accepted or to be
satisfied with each document or other matter required thereunder to be consented
to or approved by or acceptable or satisfactory to the Lenders unless an officer
of the Agent  responsible  for the  transactions  contemplated by this Agreement
shall have received notice from such Lender prior to the date that the Borrower,
by notice to the Lenders,  designates as the proposed Effective Date, specifying
its  objection  thereto.  The Agent  shall  promptly  notify the  Lenders of the
occurrence of the Effective Date.


                                   ARTICLE IV
                         REPRESENTATIONS AND WARRANTIES

     SECTION 4.01.  Representations and Warranties of the Borrower. The Borrower
represents and warrants as follows:

          (a) The Borrower is a corporation duly organized, validly existing and
     in good standing under the laws of the State of Delaware.

          (b) The  execution,  delivery and  performance by the Borrower of this
     Agreement and the Notes are within the Borrower's  corporate  powers,  have
     been  duly  authorized  by  all  necessary  corporate  action,  and  do not
<PAGE>   10

     contravene  (i) the  Borrower's  charter  or by-laws or (ii) any law or any
     contractual restriction binding on or affecting the Borrower.

          (c) No  authorization or approval or other action by, and no notice to
     or  filing  with,  any  Governmental  Authority  is  required  for  the due
     execution,  delivery and  performance by the Borrower of this Agreement and
     the Notes.

          (d) This Agreement has been,  and the Notes when  delivered  hereunder
     will have been, duly executed and delivered by the Borrower. This Agreement
     is, and each of the Notes when delivered  hereunder  will be, legal,  valid
     and binding obligations of the Borrower enforceable against the Borrower in
     accordance with their respective terms.

          (e)  The   Consolidated   balance  sheets  of  the  Borrower  and  its
     Subsidiaries  as at December  31, 1997 and June 30,  1998,  and the related
     Consolidated  statements  of income and cash flows of the  Borrower and its
     Subsidiaries  for the fiscal year and the six months then ended,  copies of
     which have been  furnished to the  Lenders,  fairly  present the  financial
     condition  of the  Borrower  and its  Subsidiaries  as at such date and the
     results of the  operations  of the  Borrower and its  Subsidiaries  for the
     period  ended on such date,  all in  accordance  with GAAP.  Since June 30,
     1998, there has been no Material Adverse Change.

          (f) There is no pending or threatened  action or proceeding  affecting
     the  Borrower  or any of its  Subsidiaries  before any court,  governmental
     agency  or  arbitrator,  that  (i)  may  materially  adversely  affect  the
     financial   condition  or   operations  of  the  Borrower  or  any  of  its
     Subsidiaries  or  (ii)  purports  to  affect  the  legality,   validity  or
     enforceability  of this Agreement or the Notes or the  consummation  of the
     transactions contemplated hereby.

          (g) The Borrower is not engaged in the  business of  extending  credit
     for the purpose of purchasing or carrying  margin stock (within the meaning
     of  Regulation U issued by the Board of  Governors  of the Federal  Reserve
     System),  and no proceeds of any Advance  will be used to purchase or carry
     any  margin  stock  or to  extend  credit  to  others  for the  purpose  of
     purchasing or carrying any margin stock.

          (h) The Advances  and all related  obligations  of the Borrower  under
     this  Agreement  and the Notes  rank pari  passu  with all other  unsecured
     obligations  of the  Borrower  that are  not,  by  their  terms,  expressly
     subordinate to such other obligations of the Borrower.


                                    ARTICLE V
                            COVENANTS OF THE BORROWER

     SECTION  5.01.  Affirmative  Covenants.  On and after the Change of Control
Date and so long as any Advance shall remain unpaid or any Lender shall have any
Commitment  hereunder,  the Borrower  will,  unless the Lenders shall  otherwise
consent in writing:

          (a)  Compliance  with  Laws,  Etc.  Comply,  and  cause  each  of  its
     Subsidiaries to comply, in all material respects, with all applicable laws,
     rules,   regulations  and  orders,  such  compliance  to  include,  without
     limitation, compliance with ERISA and environmental laws.

          (b) Payment of Taxes,  Etc. Pay and  discharge,  and cause each of its
     Subsidiaries to pay and discharge, before the same shall become delinquent,
     (i) all taxes,  assessments and governmental charges or levies imposed upon
     it or upon its property and (ii) all lawful claims that,  if unpaid,  might
     by law become a lien upon its property; provided, however, that neither the
     Borrower nor any of its Subsidiaries  shall be required to pay or discharge
     any such tax,  assessment,  charge or claim that is being contested in good
     faith and by proper  proceedings and as to which  appropriate  reserves are
     being maintained, unless and until any lien resulting therefrom attaches to
     its property and becomes enforceable against its other creditors.

          (c) Preservation of Corporate  Existence,  Etc. Preserve and maintain,
     and cause each of its Subsidiaries to preserve and maintain,  its corporate
     existence,  rights  (charter  and  statutory)  and  franchises;   provided,
     however,  that neither the Borrower  nor any of its  Subsidiaries  shall be
     required to preserve  any right or  franchise  if the board of directors of
     the  Borrower or such  Subsidiary  shall  determine  that the  preservation
     thereof  is no longer  desirable  in the  conduct  of the  business  of the
     Borrower or such Subsidiary,  as the case may be, and that the loss thereof
     is not  disadvantageous  in any  material  respect  to the  Borrower,  such
     Subsidiary or the Lenders.

          (d)  Keeping of Books.  Keep,  and cause each of its  Subsidiaries  to
     keep, proper books of record and account, in which full and correct entries
     shall be made of all financial  transactions and the assets and business of
     the Borrower and each such  Subsidiary in  accordance  with GAAP or, in the
     case of any Subsidiary  organized  under the laws of a  jurisdiction  other
     than the  United  States  or any  state  thereof,  the  equivalent  of GAAP
     applicable in such jurisdiction.

          (e) Maintenance of Properties,  Etc. Maintain and preserve,  and cause
<PAGE>   11

     each of its  Subsidiaries  to maintain and preserve,  all of its properties
     that are used or useful in the  conduct  of its  business  in good  working
     order and condition, ordinary wear and tear excepted.

          (f) Reporting Requirements. Furnish to the Lenders:

               (i) as soon as  available  and in any event  within 45 days after
          the end of each of the first three quarters of each fiscal year of the
          Borrower,   Consolidated  balance  sheets  of  the  Borrower  and  its
          Subsidiaries as of the end of such quarter and Consolidated statements
          of income and cash flows of the Borrower and its  Subsidiaries for the
          period  commencing  at the end of the previous  fiscal year and ending
          with the end of such  quarter,  duly  certified  (subject  to year-end
          audit  adjustments) by the chief financial  officer of the Borrower as
          having been  prepared  in  accordance  with GAAP and setting  forth in
          reasonable detail the calculations necessary to demonstrate compliance
          with subsections (g), (h) and (i) of this Section 4.01;

               (ii) as soon as  available  and in any event within 90 days after
          the end of each  fiscal  year of the  Borrower,  a copy of the  annual
          report for such year for the Borrower and its Subsidiaries, containing
          Consolidated balance sheets of the Borrower and its Subsidiaries as of
          the end of such fiscal year and Consolidated  statements of income and
          cash flows of the Borrower and its  Subsidiaries for such fiscal year,
          in each case  accompanied  by an opinion  acceptable to the Lenders by
          KPMG Peat Marwick or other independent public  accountants  reasonably
          acceptable to the Lenders and setting  forth in reasonable  detail the
          calculations necessary to demonstrate compliance with subsections (g),
          (h) and (i) of this Section 4.01;

               (iii) as soon as possible  and in any event within ten days after
          the  occurrence  of  each  Default  continuing  on the  date  of  such
          statement,  a statement of the chief financial officer of the Borrower
          setting forth details of such Default and the action that the Borrower
          has taken and proposes to take with respect thereto;

               (iv) promptly after the sending or filing thereof,  copies of all
          reports which the Borrower  sends to any of its  securityholders,  and
          copies of all reports and  registration  statements which the Borrower
          or any of its  Subsidiaries  files with the  Securities  and  Exchange
          Commission or any national securities exchange;

               (v) promptly after the filing or receiving thereof, copies of all
          reports and notices which the Borrower or any  Subsidiary  files under
          ERISA  with  the  Internal  Revenue  Service  or the  Pension  Benefit
          Guaranty  Corporation  or the U.S.  Department  of Labor or which  the
          Borrower or any Subsidiary  receives from the Pension Benefit Guaranty
          Corporation;

               (vi)  promptly  after  the  commencement  thereof,  notice of all
          actions  and  proceedings  before  any court,  governmental  agency or
          arbitrator  affecting the Borrower or any of its  Subsidiaries  of the
          type described in Section 4.01(f); and

               (vii) such other  information  respecting  the Borrower or any of
          its Subsidiaries as any Lender through the Agent may from time to time
          reasonably request.

          (g) Working Capital. Maintain an excess of Consolidated current assets
     over Consolidated  current liabilities of the Borrower and its Subsidiaries
     of not less than $50,000,000 and a ratio of Consolidated  current assets to
     Consolidated  current  liabilities of the Borrower and its  Subsidiaries of
     not less than 1.25 to 1. Consolidated current liabilities shall include the
     current portion of the Debt resulting from the Notes.

          (h) Net Worth.  Maintain an excess of  Consolidated  total assets over
     Consolidated  total liabilities of the Borrower and its Subsidiaries of not
     less than $400,000,000.

          (i) Interest  Coverage Ratio.  Maintain an Interest  Coverage Ratio of
     not less than 4.0 to 1.

     SECTION 5.02. Negative Covenants.  On and after October 1, 1998 and so long
as any  Advance  shall  remain  unpaid or any Lender  shall have any  Commitment
hereunder,  the Borrower will not, unless the Lenders shall otherwise consent in
writing:

          (a)  Liens,  Etc.  Create or suffer  to  exist,  or permit  any of its
     Subsidiaries to create or suffer to exist, any lien,  security  interest or
     other charge or encumbrance, or any other type of preferential arrangement,
     upon or  with  respect  to any of its  properties,  whether  now  owned  or
     hereafter acquired, or assign, or permit any of its Subsidiaries to assign,
     any right to receive income, in each case to secure any Debt of any Person,
     other than:

               (i) purchase  money liens or purchase  money  security  interests
          upon  or in any  property  acquired  or held  by the  Borrower  or any
          Subsidiary  in the ordinary  course of business to secure the purchase
          price of such property or to secure  indebtedness  incurred solely for
<PAGE>   12

          the purpose of financing the acquisition of such property;

               (ii) liens or security interests existing on such property at the
          time of its acquisition (other than any such lien or security interest
          created in contemplation of such acquisition);

               (iii) liens for taxes,  assessments and  governmental  charges or
          levies to the extent not  required  to be paid under  Section  5.01(b)
          hereof;

               (iv) liens  imposed by law,  such as  materialmen's,  mechanics',
          carriers',  workmen's  and  repairmen's  liens and other similar liens
          arising in the ordinary course of business  securing  obligations that
          are not overdue for a period of more than 30 days;

               (v)  pledges or  deposits to secure  obligations  under  workers'
          compensation  laws or  similar  legislation  or to  secure  public  or
          statutory obligations;

               (vi) easements,  rights of way and other encumbrances on title to
          real  property  that do not render  title to the  property  encumbered
          thereby  unmarketable or materially  adversely  affect the use of such
          property for its present purposes; and

               (vii) liens  incurred or deposits made in the ordinary  course of
          business  to secure  the  performance  of  letters  of  credit,  bids,
          tenders, sales contracts, leases, surety, appeal and performance bonds
          and other  similar  obligations  not incurred in  connection  with the
          borrowing of money;

     provided  that  the  aggregate   principal   amount  of  the  Debt,   other
     indebtedness, taxes, assessments,  governmental charges or levies and other
     obligations  secured  by the liens or  security  interests  referred  to in
     clauses  (i)  through  (vii)  of this  Section  5.02(a)  shall  not  exceed
     $45,000,000 in the aggregate at any time outstanding.

          (b)  Accounting  Changes.  Make  or  permit,  or  permit  any  of  its
     Subsidiaries  to make or  permit,  any  change in  accounting  policies  or
     reporting  practices,  except as allowed by generally  accepted  accounting
     principles.


                                   ARTICLE VI
                                EVENTS OF DEFAULT

     SECTION 6.01. Events of Default. If any of the following events ("Events of
Default") shall occur and be continuing:

          (a) the  Borrower  shall fail to pay (i) any  principal of any Advance
     when the same  becomes due and payable or (ii) any  interest on any Advance
     or any other  amount  payable  under this  Agreement or any Note within ten
     days from the date the same becomes due and payable; or

          (b) any  representation  or warranty made by the Borrower herein or by
     the Borrower (or any of its  officers) in  connection  with this  Agreement
     shall prove to have been incorrect in any material respect when made; or

          (c) (i) the  Borrower  shall  fail to  perform  or  observe  any term,
     covenant or  agreement  contained  in  subsection  (c),  (g), (h) or (i) of
     Section 5.01 or in Section 5.02 or (ii) the Borrower  shall fail to perform
     or  observe  any  other  term,  covenant  or  agreement  contained  in this
     Agreement  or any  Note on its part to be  performed  or  observed  if such
     failure shall remain  unremedied  for 30 days after written  notice thereof
     shall have been given to the Borrower by the Agent or any Lender; or

          (d) the  Borrower  or any of its  Subsidiaries  shall  fail to pay any
     principal  of or premium or interest on any Debt that is  outstanding  in a
     principal  amount of at least  $5,000,000 in the aggregate  (but  excluding
     Debt outstanding hereunder) of the Borrower or such Subsidiary (as the case
     may be),  when the same  becomes  due and  payable  (whether  by  scheduled
     maturity, required prepayment, acceleration, demand or otherwise), and such
     failure shall continue after the applicable grace period, if any, specified
     in the  agreement or  instrument  relating to such Debt; or any other event
     shall occur or  condition  shall exist under any  agreement  or  instrument
     relating to any such Debt and shall  continue  after the  applicable  grace
     period, if any, specified in such agreement or instrument, if the effect of
     such event or condition is to accelerate, or to permit the acceleration of,
     the maturity of such Debt; or any such Debt shall be declared to be due and
     payable,  or  required to be prepaid  (other than by a regularly  scheduled
     required  prepayment),  redeemed,  purchased  or  defeased,  or an offer to
     prepay, redeem, purchase or defease such Debt shall be required to be made,
     in each case prior to the stated maturity thereof; or

          (e) the Borrower or any of its  Subsidiaries  shall  generally not pay
     its debts as such debts become due, or shall admit in writing its inability
     to pay its debts  generally,  or shall  make a general  assignment  for the
     benefit of creditors;  or any proceeding  shall be instituted by or against
     the Borrower or any of its Subsidiaries seeking to adjudicate it a bankrupt
     or  insolvent,   or  seeking  liquidation,   winding  up,   reorganization,
<PAGE>   13

     arrangement,  adjustment,  protection,  relief, or composition of it or its
     debts under any law relating to bankruptcy, insolvency or reorganization or
     relief of  debtors,  or  seeking  the  entry of an order for  relief or the
     appointment of a receiver, trustee, custodian or other similar official for
     it or for any substantial part of its property and, in the case of any such
     proceeding  instituted  against it (but not instituted by it),  either such
     proceeding shall remain undismissed or unstayed for a period of 60 days, or
     any  of  the  actions  sought  in  such  proceeding   (including,   without
     limitation, the entry of an order for relief against, or the appointment of
     a receiver, trustee, custodian or other similar official for, it or for any
     substantial  part of its property)  shall occur;  or the Borrower or any of
     its  Subsidiaries  shall take any corporate  action to authorize any of the
     actions set forth above in this  Section  6.01(e);  or

          (f) any  judgment  or order  for the  payment  of money in  excess  of
     $5,000,000   shall  be  rendered   against  the  Borrower  or  any  of  its
     Subsidiaries  and  either  (i)  enforcement  proceedings  shall  have  been
     commenced by any creditor  upon such  judgment or order or (ii) there shall
     be any period of 30 consecutive  days during which a stay of enforcement of
     such judgment or order,  by reason of a pending appeal or otherwise,  shall
     not be in effect;

then, and in any such event, the Agent (i) shall at the request, or may with the
consent,  of the Lenders,  by notice to the Borrower,  declare the obligation of
each  Lender  to make  Advances  to be  terminated,  whereupon  the  same  shall
forthwith terminate,  and (ii) shall at the request, or may with the consent, of
the Lenders, by notice to the Borrower,  declare the Notes, all interest thereon
and all other  amounts  payable  under this  Agreement to be  forthwith  due and
payable,  whereupon  the Notes,  all such  interest and all such  amounts  shall
become and be forthwith due and payable, without presentment, demand, protest or
further  notice of any kind,  all of which are  hereby  expressly  waived by the
Borrower;  provided,  however, that in the event of an actual or deemed entry of
an order for relief with  respect to the Borrower  under the Federal  Bankruptcy
Code, (A) the obligation of each Lender to make Advances shall  automatically be
terminated  and (B) the Notes,  all such  interest  and all such  amounts  shall
automatically  become  and be due  and  payable,  without  presentment,  demand,
protest or any notice of any kind, all of which are hereby  expressly  waived by
the Borrower.


                                   ARTICLE VII
                                    THE AGENT

     SECTION 7.01.  Authorization  and Action.  Each Lender hereby  appoints and
authorizes  the Agent to take such action as agent on its behalf and to exercise
such powers and discretion under this Agreement as are delegated to the Agent by
the terms  hereof,  together with such powers and  discretion as are  reasonably
incidental  thereto.  As to any  matters  not  expressly  provided  for by  this
Agreement  (including,  without  limitation,  enforcement  or  collection of the
Notes),  the Agent shall not be required to exercise any  discretion or take any
action,  but shall be  required  to act or to refrain  from acting (and shall be
fully protected in so acting or refraining from acting) upon the instructions of
the  Lenders,  and such  instructions  shall be binding upon all Lenders and all
holders of Notes;  provided,  however,  that the Agent  shall not be required to
take any action that exposes the Agent to personal liability or that is contrary
to this  Agreement  or  applicable  law. The Agent agrees to give to each Lender
prompt  notice of each notice given to it by the Borrower  pursuant to the terms
of this Agreement.

     SECTION  7.02.  Agent's  Reliance,  Etc.  Neither  the Agent nor any of its
directors, officers, agents or employees shall be liable for any action taken or
omitted to be taken by it or them under or in  connection  with this  Agreement,
except  for its or their own gross  negligence  or willful  misconduct.  Without
limitation of the  generality  of the  foregoing,  the Agent:  (a) may treat the
payee of any Note as the holder  thereof until the Agent receives and accepts an
Assignment and  Acceptance  entered into by the Lender that is the payee of such
Note, as assignor, and an Eligible Assignee, as assignee, as provided in Section
8.07; (b) may consult with legal counsel  (including  counsel for the Borrower),
independent public accountants and other experts selected by it and shall not be
liable  for any  action  taken or  omitted  to be  taken in good  faith by it in
accordance with the advice of such counsel, accountants or experts; (c) makes no
warranty or  representation  to any Lender and shall not be  responsible  to any
Lender for any statements,  warranties or  representations  (whether  written or
oral) made in or in connection with this Agreement;  (d) shall not have any duty
to ascertain or to inquire as to the  performance  or  observance  of any of the
terms,  covenants or conditions of this Agreement on the part of the Borrower or
to inspect the property  (including the books and records) of the Borrower;  (e)
shall  not be  responsible  to any  Lender  for  the  due  execution,  legality,
validity, enforceability, genuineness, sufficiency or value of this Agreement or
any other instrument or document  furnished pursuant hereto; and (f) shall incur
no  liability  under or in respect of this  Agreement by acting upon any notice,
consent, certificate or other instrument or writing (which may be by telecopier,
telegram or telex) believed by it to be genuine and signed or sent by the proper
party or parties.

     SECTION 7.03. HULS. With respect to its Commitment,  the Advance made by it
and the Note issued to it, Huls shall have the same rights and powers under this
Agreement  as any other  Lender and may  exercise the same as though it were not
the Agent; and the term "Lender" or "Lenders" shall,  unless otherwise expressly
<PAGE>   14

indicated, include Huls in its individual capacity.

     SECTION 7.04. Lender Credit Decision. Each Lender acknowledges that it has,
independently  and without reliance upon the Agent or any other Lender and based
on the financial statements referred to in Section 4.01 and such other documents
and information as it has deemed  appropriate,  made its own credit analysis and
decision to enter into this  Agreement.  Each Lender also  acknowledges  that it
will,  independently and without reliance upon the Agent or any other Lender and
based on such  documents and  information  as it shall deem  appropriate  at the
time,  continue to make its own credit  decisions in taking or not taking action
under this Agreement.

     SECTION 7.05. Indemnification. The Lenders agree to indemnify the Agent (to
the extent not reimbursed by the Borrower),  ratably according to the respective
principal  amounts of the Notes then held by each of them (or if no Notes are at
the time  outstanding  or if any Notes are held by Persons that are not Lenders,
ratably  according to the  respective  amounts of their  Commitments),  from and
against  any and  all  liabilities,  obligations,  losses,  damages,  penalties,
actions,  judgments,  suits,  costs,  expenses or  disbursements  of any kind or
nature  whatsoever that may be imposed on, incurred by, or asserted  against the
Agent in any way  relating  to or arising  out of this  Agreement  or any action
taken or omitted  by the Agent  under this  Agreement,  provided  that no Lender
shall be  liable  for any  portion  of such  liabilities,  obligations,  losses,
damages, penalties,  actions, judgments, suits, costs, expenses or disbursements
resulting  from the Agent's  gross  negligence  or willful  misconduct.  Without
limitation of the foregoing,  each Lender agrees to reimburse the Agent promptly
upon  demand for its  ratable  share of any  out-of-pocket  expenses  (including
counsel  fees)  incurred  by the  Agent  in  connection  with  the  preparation,
execution,  delivery,  administration,  modification,  amendment or  enforcement
(whether  through  negotiations,  legal  proceedings  or otherwise) of, or legal
advice in respect of rights or  responsibilities  under, this Agreement,  to the
extent that the Agent is not reimbursed for such expenses by the Borrower.

     SECTION 7.06.  Successor  Agent. The Agent may resign at any time by giving
written notice thereof to the Lenders and the Borrower and may be removed at any
time with or without cause by the all of the Lenders.  Upon any such resignation
or removal, the Lenders shall have the right to appoint a successor Agent. If no
successor  Agent shall have been so  appointed  by the  Lenders,  and shall have
accepted such  appointment,  within 30 days after the retiring Agent's giving of
notice of resignation or the Lenders'  removal of the retiring  Agent,  then the
retiring Agent may, on behalf of the Lenders,  appoint a successor Agent,  which
shall be a commercial  bank organized  under the laws of the United States or of
any state thereof and having a long-term  senior unsecured debt rating by S&P of
"A" or better.  Upon the acceptance of any  appointment as Agent  hereunder by a
successor  Agent,  such successor  Agent shall  thereupon  succeed to and become
vested with all the rights,  powers,  discretion,  privileges  and duties of the
retiring  Agent,  and the retiring Agent shall be discharged from its duties and
obligations  under this  Agreement.  After any retiring  Agent's  resignation or
removal  hereunder as Agent,  the  provisions of this Article VII shall inure to
its  benefit as to any  actions  taken or omitted to be taken by it while it was
Agent under this Agreement.


                                  ARTICLE VIII
                                  MISCELLANEOUS

     SECTION 8.01.  Amendments,  Etc. No amendment or waiver of any provision of
this  Agreement  or the Notes,  nor  consent to any  departure  by the  Borrower
therefrom,  shall in any event be effective  unless the same shall be in writing
and signed by the  Required  Lenders,  and then such waiver or consent  shall be
effective only in the specific  instance and for the specific  purpose for which
given; provided,  however, that no amendment, waiver or consent shall, unless in
writing and signed by all the Lenders, do any of the following: (a) waive any of
the conditions  specified in Section 3.01,  (b) increase the  Commitments of the
Lenders or subject the  Lenders to any  additional  obligations,  (c) reduce the
principal  of, or interest  on, the Notes or any fees or other  amounts  payable
hereunder,  (d)  postpone  any date fixed for any  payment of  principal  of, or
interest  on,  the Notes or any fees or other  amounts  payable  hereunder,  (e)
change the percentage of the  Commitments or of the aggregate  unpaid  principal
amount of the Notes,  or the number of Lenders,  that shall be required  for the
Lenders or any of them to take any action  hereunder  or (f) amend this  Section
8.01; and provided further that no amendment, waiver or consent shall, unless in
writing and signed by the Agent in addition  to the  Lenders  required  above to
take such action,  affect the rights or duties of the Agent under this Agreement
or any Note.

     SECTION 8.02. Notices,  Etc. All notices and other communications  provided
for hereunder shall be in writing  (including  telecopier,  telegraphic or telex
communication) and mailed, telecopied,  telegraphed, telexed or delivered, if to
the Borrower,  at its address at 501 Pearl Drive,  St. Peters,  Missouri  63376,
Attention:  Treasurer  (telecopier  number  (314)  279-5163);  if to the Initial
Lender or the Agent,  at 13801 Riverport  Drive,  Suite 500,  Maryland  Heights,
Missouri 63376,  (telecopier  number (314) 298-4185);  if to any other Lender or
any Bank,  at its  Domestic  Lending  Office  specified  in the  Assignment  and
Acceptance  pursuant to which it became a Lender;  or, as to any party,  at such
other address as shall be  designated  by such party in a written  notice to the
other  parties.  All  such  notices  and  communications   shall,  when  mailed,
telecopied,  telegraphed or telexed,  be effective when received by the party to
whom such notice is addressed,  except that notices and communications  pursuant
<PAGE>   15

to Section 2.06 shall not be effective  until  confirmed in writing by the party
to whom  such  notice  is  addressed.  Delivery  by  telecopier  of an  executed
counterpart of any amendment or waiver of any provision of this Agreement or the
Notes or of any Exhibit hereto to be executed and delivered  hereunder  shall be
effective as delivery of a manually executed counterpart thereof.

     SECTION 8.03. No Waiver;  Remedies. No failure on the part of any Lender or
the Agent to exercise, and no delay in exercising,  any right hereunder or under
any Note  shall  operate  as a waiver  thereof;  nor shall any single or partial
exercise of any such right preclude any other or further exercise thereof or the
exercise of any other right. The remedies herein provided are cumulative and not
exclusive of any remedies provided by law.

     SECTION 8.04. Costs and Expenses.  (a) The Borrower agrees to pay on demand
all  reasonable  costs  and  expenses  of  the  Agent  in  connection  with  the
preparation,  execution, delivery, modification and amendment of this Agreement,
the Notes and the other documents to be delivered hereunder,  including, without
limitation,  the  reasonable  fees and  expenses  of counsel  for the Agent with
respect  thereto  and with  respect to  advising  the Agent as to its rights and
responsibilities  under this  Agreement.  The Borrower  further agrees to pay on
demand all costs and expenses of the Agent and the Lenders,  if any  (including,
without  limitation,  reasonable counsel fees and expenses),  in connection with
the enforcement (whether through  negotiations,  legal proceedings or otherwise)
of this Agreement,  the Notes and the other documents to be delivered hereunder,
including,  without limitation,  reasonable fees and expenses of counsel for the
Agent and each Lender in connection  with the  enforcement  of rights under this
Section 8.04(a).

     (b) The Borrower  agrees to indemnify  and hold harmless the Agent and each
Lender and each of their  Affiliates and their officers,  directors,  employees,
agents and advisors (each, an "Indemnified  Party") from and against any and all
claims,   damages,   losses,   liabilities  and  expenses  (including,   without
limitation,  reasonable fees and expenses of counsel) that may be incurred by or
asserted or awarded against any  Indemnified  Party, in each case arising out of
or in connection with or by reason of, or in connection with the preparation for
a defense  of, any  investigation,  litigation  or  proceeding  arising  out of,
related  to or in  connection  with  the  Notes,  this  Agreement,  any  of  the
transactions  contemplated  herein or the actual or proposed use of the proceeds
of the Advances, whether or not such investigation,  litigation or proceeding is
brought  by  the  Borrower,  its  directors,  shareholders  or  creditors  or an
Indemnified  Party or any other Person or any  Indemnified  Party is otherwise a
party  thereto  and  whether  or not the  transactions  contemplated  hereby are
consummated, except to the extent such claim, damage, loss, liability or expense
is found in a final, nonappealable judgment by a court of competent jurisdiction
to have  resulted  from such  Indemnified  Party's  gross  negligence or willful
misconduct.  The Borrower also agrees not to assert any claim against the Agent,
any  Lender,  any of their  Affiliates,  or any of their  respective  directors,
officers,  employees,  attorneys  and agents,  on any theory of  liability,  for
special, indirect, consequential or punitive damages arising out of or otherwise
relating to the Notes,  this  Agreement,  any of the  transactions  contemplated
herein or the actual or proposed use of the proceeds of the Advances.

     (c)  Without  prejudice  to the  survival  of any  other  agreement  of the
Borrower hereunder,  the agreements and obligations of the Borrower contained in
Sections  2.09,  2.12 and 8.04 shall  survive the payment in full of  principal,
interest and all other amounts payable hereunder and under the Notes.

     SECTION  8.05.  Right of  Setoff.  Upon (a) the  occurrence  and during the
continuance  of any Event of Default  and (b) the  making of the  request or the
granting of the consent  specified  by Section  6.01 to  authorize  the Agent to
declare the Notes due and payable  pursuant to the  provisions  of Section 6.01,
each Lender and each of its Affiliates is hereby authorized at any time and from
time to time, to the fullest  extent  permitted by law, to set off and apply any
and all deposits (general or special,  time or demand,  provisional or final) at
any time held and other  indebtedness  at any time owing by such  Lender or such
Affiliate  to or for the credit or the account of the  Borrower  against any and
all of the  obligations  of the Borrower now or  hereafter  existing  under this
Agreement  and the Note held by such  Lender,  whether or not such Lender  shall
have  made any  demand  under  this  Agreement  or such Note and  although  such
obligations may be unmatured. Each Lender agrees promptly to notify the Borrower
after any such setoff and  application,  provided  that the failure to give such
notice shall not affect the validity of such setoff and application.  The rights
of each Lender and its  Affiliates  under this  Section  8.05 are in addition to
other  rights and  remedies  (including,  without  limitation,  other  rights of
setoff) that such Lender and its Affiliates may have.

     SECTION 8.06. Binding Effect.  This Agreement shall become effective (other
than Section 2.01,  which shall only become  effective upon  satisfaction of the
conditions precedent set forth in Section 3.01) when it shall have been executed
by the  Borrower,  the Agent and the  Initial  Lender  and  thereafter  shall be
binding upon and inure to the benefit of the Borrower, the Agent and the Initial
Lender and their  respective  successors  and assigns,  except that the Borrower
shall not have the right to assign its rights  hereunder or any interest  herein
without the prior written consent of the Lenders.

     SECTION 8.07. Assignments and Participations. (a) Each Lender may assign to
one or more  Persons all or a portion of its rights and  obligations  under this
Agreement  (including,  without limitation,  all or a portion of its Commitment,
the Advance  owing to it and the Note or Notes held by it);  provided,  however,
<PAGE>   16

that  (i)  each  such  assignment  shall be of a  constant,  and not a  varying,
percentage of all rights and obligations  under this  Agreement,  (ii) except in
the  case  of  an  assignment  to a  Person  that,  immediately  prior  to  such
assignment,  was a Lender  or an  assignment  of all of a  Lender's  rights  and
obligations under this Agreement,  the amount of the Commitment of the assigning
Lender being  assigned  pursuant to each such  assignment  (determined as of the
date of the Assignment and Acceptance with respect to such assignment)  shall in
no event be less than $5,000,000 or an integral multiple of $1,000,000 in excess
thereof,  (iii) each such assignment shall be to an Eligible Assignee,  and (iv)
the parties to each such assignment  shall execute and deliver to the Agent, for
its  acceptance  and recording in the Register,  an Assignment  and  Acceptance,
together  with  any  Note  subject  to such  assignment.  Upon  such  execution,
delivery,  acceptance and recording, from and after the effective date specified
in each Assignment and Acceptance,  (A) the assignee thereunder shall be a party
hereto  and,  to the extent  that  rights and  obligations  hereunder  have been
assigned to it pursuant to such Assignment and  Acceptance,  have the rights and
obligations of a Lender hereunder and (B) the Lender assignor  thereunder shall,
to the extent that rights and  obligations  hereunder  have been  assigned by it
pursuant  to such  Assignment  and  Acceptance,  relinquish  its  rights  and be
released  from its  obligations  under this  Agreement  (and,  in the case of an
Assignment and Acceptance  covering all or the remaining portion of an assigning
Lender's rights and obligations under this Agreement, such Lender shall cease to
be a party hereto).

     (b) By executing and  delivering an Assignment and  Acceptance,  the Lender
assignor  thereunder and the assignee  thereunder confirm to and agree with each
other and the other  parties  hereto as  follows:  (i) other than as provided in
such Assignment and Acceptance, such assigning Lender makes no representation or
warranty  and  assumes  no  responsibility   with  respect  to  any  statements,
warranties or  representations  made in or in connection  with this Agreement or
the execution, legality, validity, enforceability,  genuineness,  sufficiency or
value of this Agreement or any other instrument or document  furnished  pursuant
hereto;  (ii) such  assigning  Lender  makes no  representation  or warranty and
assumes  no  responsibility  with  respect  to the  financial  condition  of the
Borrower  or  the  performance  or  observance  by  the  Borrower  of any of its
obligations  under this Agreement or any other instrument or document  furnished
pursuant  hereto;  (iii) such  assignee  confirms that it has received a copy of
this Agreement,  together with copies of the financial statements referred to in
Section  4.01  and  such  other  documents  and  information  as it  has  deemed
appropriate  to make its own credit  analysis  and  decision  to enter into such
Assignment and Acceptance;  (iv) such assignee will,  independently  and without
reliance upon the Agent,  such assigning Lender or any other Lender and based on
such  documents  and  information  as it shall  deem  appropriate  at the  time,
continue to make its own credit  decisions in taking or not taking  action under
this Agreement; (v) such assignee confirms that it is an Eligible Assignee; (vi)
such assignee  appoints and authorizes the Agent to take such action as agent on
its behalf and to exercise such powers and  discretion  under this  Agreement as
are  delegated to the Agent by the terms  hereof,  together with such powers and
discretion as are reasonably  incidental thereto; and (vii) such assignee agrees
that it will perform in accordance with their terms all of the obligations  that
by the terms of this Agreement are required to be performed by it as a Lender.

     (c) The Agent shall  maintain at its address  referred to in Section 8.02 a
copy of each  Assignment  and  Acceptance  delivered to and accepted by it and a
register for the  recordation  of the names and addresses of the Lenders and the
Commitment  of, and principal  amount of the Advances owing to, each Lender from
time to time (the  "Register").  The entries in the Register shall be conclusive
and binding for all purposes, absent manifest error, and the Borrower, the Agent
and the Lenders may treat each Person  whose name is recorded in the Register as
a Lender  hereunder for all purposes of this  Agreement.  The Register  shall be
available for  inspection by the Borrower or any Lender at any  reasonable  time
and from time to time upon reasonable prior notice.

     (d) Upon  its  receipt  of an  Assignment  and  Acceptance  executed  by an
assigning Lender and an assignee  representing that it is an Eligible  Assignee,
together with any Note or Notes subject to such assignment,  the Agent shall, if
such  Assignment and Acceptance has been completed and is in  substantially  the
form of Exhibit C hereto, (i) accept such Assignment and Acceptance, (ii) record
the information  contained  therein in the Register and (iii) give prompt notice
thereof to the  Borrower.  Within five  Business  Days after its receipt of such
notice, the Borrower, at its own expense, shall execute and deliver to the Agent
in exchange for the  surrendered  Note a new Note to the order of such  Eligible
Assignee  in an amount  equal to the  Commitment  assumed by it pursuant to such
Assignment and Acceptance and, if the assigning Lender has retained a Commitment
hereunder, a new Note to the order of the assigning Lender in an amount equal to
the Commitment  retained by it hereunder.  Such new Note or Notes shall be in an
aggregate  principal  amount  equal to the  aggregate  principal  amount of such
surrendered Note or Notes,  shall be dated the effective date of such Assignment
and Acceptance  and shall  otherwise be in  substantially  the form of Exhibit A
hereto.

     (e) Each  Lender  may  sell  participations  to one or more  banks or other
entities  (other than the Borrower or any of its  Affiliates)  in or to all or a
portion of its rights and obligations under this Agreement  (including,  without
limitation, all or a portion of its Commitment, the Advances owing to it and the
Note or Notes held by it); provided, however, that (i) such Lender's obligations
under this  Agreement  (including,  without  limitation,  its  Commitment to the
Borrower hereunder) shall remain unchanged, (ii) such Lender shall remain solely
responsible to the other parties hereto for the performance of such obligations,
<PAGE>   17

(iii) such Lender  shall  remain the holder of any such Note for all purposes of
this  Agreement,  (iv) the  Borrower,  the  Agent and the  other  Lenders  shall
continue to deal solely and directly  with such Lender in  connection  with such
Lender's  rights and  obligations  under this  Agreement and (v) no  participant
under any such  participation  shall have any right to approve any  amendment or
waiver of any  provision of this  Agreement  or any Note,  or any consent to any
departure by the Borrower  therefrom,  except to the extent that such amendment,
waiver or consent  would reduce the  principal  of, or interest on, the Notes or
any fees or other amounts payable hereunder,  in each case to the extent subject
to such  participation,  or postpone any date fixed for any payment of principal
of, or interest on, the Notes or any fees or other amounts payable hereunder, in
each case to the extent subject to such participation.

     (f) Any Lender may, in connection with any assignment or  participation  or
proposed assignment or participation  pursuant to this Section 8.07, disclose to
the assignee or participant or proposed assignee or participant, any information
relating  to the  Borrower  furnished  to such  Lender  by or on  behalf  of the
Borrower;  provided  that,  prior  to  any  such  disclosure,  the  assignee  or
participant  or proposed  assignee or  participant  shall agree to preserve  the
confidentiality  of  any  Confidential  Information  relating  to  the  Borrower
received by it from such Lender.

     (g)  Notwithstanding  any other provision set forth in this Agreement,  any
Lender may at any time  create a security  interest in all or any portion of its
rights under this Agreement (including,  without limitation,  the Advances owing
to it and  the  Note  held  by it) in  favor  of any  Federal  Reserve  Bank  in
accordance  with  Regulation A of the Board of Governors of the Federal  Reserve
System.

     (h)  In  connection  with  the  initial   assignment  or  proposed  initial
assignment by the Initial  Lender  pursuant to this Section  8.07,  the Borrower
shall,  upon the request of the Initial Lender,  furnish to the Initial Lender a
favorable opinion of counsel for the Borrower  acceptable to the Initial Lender,
in form and substance reasonably satisfactory to the Initial Lender.

     SECTION  8.08.  Confidentiality.  Neither  the Agent nor any  Lender  shall
disclose any  Confidential  Information to any Person without the consent of the
Borrower,  other than (a) to the Agent's or such Lender's  Affiliates  and their
officers, directors, employees, agents and advisors and to actual or prospective
assignees and  participants,  and then, in each case, only on a confidential and
need-to-know  basis,  (b) as required by any law, rule or regulation or judicial
process  and (c) as  requested  or  required  by any  state,  federal or foreign
authority or examiner regulating banks or banking.

     SECTION 8.09. Governing Law. This Agreement and the Notes shall be governed
by, and construed in accordance with, the laws of the State of New York.

     SECTION 8.10. Execution in Counterparts.  This Agreement may be executed in
any  number  of  counterparts  and  by  different  parties  hereto  in  separate
counterparts,  each of which when so executed  shall be deemed to be an original
and all of which taken  together shall  constitute  one and the same  agreement.
Delivery of an executed  counterpart  of a signature  page to this  Agreement by
telecopier shall be effective as delivery of a manually executed  counterpart of
this Agreement.

     SECTION  8.11.  Jurisdiction,  Etc. (a) Each of the parties  hereto  hereby
irrevocably and  unconditionally  submits,  for itself and its property,  to the
nonexclusive  jurisdiction  of any New York State court or federal  court of the
United States of America  sitting in New York City, and any appellate court from
any  thereof,  in any action or  proceeding  arising  out of or relating to this
Agreement or the Notes, or for  recognition or enforcement of any judgment,  and
each of the parties hereto hereby  irrevocably and  unconditionally  agrees that
all  claims  in  respect  of any such  action  or  proceeding  may be heard  and
determined in any such New York State court or, to the extent  permitted by law,
in such federal  court.  Each of the parties hereto agrees that a final judgment
in any such  action or  proceeding  shall be  conclusive  and may be enforced in
other  jurisdictions  by suit on the judgment or in any other manner provided by
law.  Nothing  in this  Agreement  shall  affect  any  right  that any party may
otherwise  have to bring any action or proceeding  relating to this Agreement or
the Notes in the courts of any jurisdiction.

     (b) Each of the parties hereto irrevocably and  unconditionally  waives, to
the fullest  extent it may legally and  effectively do so, any objection that it
may now or  hereafter  have to the  laying  of  venue  of any  suit,  action  or
proceeding  arising out of or relating to this Agreement or the Notes in any New
York State or federal  court.  Each of the  parties  hereto  hereby  irrevocably
waives,  to the fullest extent  permitted by law, the defense of an inconvenient
forum to the maintenance of such action or proceeding in any such court.

<PAGE>   18
                                                                EXHIBIT A TO THE
                                                                  LOAN AGREEMENT


                             FORM OF PROMISSORY NOTE


U. S. $____________________                    Dated: __________________, ______

     FOR VALUE RECEIVED,  the undersigned,  MEMC ELECTRONIC  MATERIALS,  INC., a
Delaware  corporation (the  "Borrower"),  HEREBY PROMISES TO PAY to the order of
[NAME OF LENDER],  a [JURISDICTION OF INCORPORATION ] corporation (the "Lender")
for its  account  on the  Termination  Date (as  defined  in the Loan  Agreement
referred to below) the principal SUM Of U.S.$[AMOUNT OF THE LENDER'S  COMMITMENT
IN FIGURES] or, if less, the principal amount of the Advances made by the Lender
to the Borrower  pursuant to the Loan  Agreement  dated as of September 23, 1998
between the Borrower and HULS CORPORATION,  a Delaware corporation  ("Huls"), as
the Lender and as Agent (as amended,  supplemented  or otherwise  modified  from
time to time, the "Loan Agreement";  the terms defined therein being used herein
as therein defined) outstanding on the Termination Date.

     The Borrower promises to pay interest on the unpaid principal amount of the
Advances from the date of the Advances  until such  principal  amount is paid in
full, at such interest rates, and payable at such times, as are specified in the
Loan Agreement.

     Both  principal  and  interest  are  payable in lawful  money of the United
States of America to Huls, as Agent, at the Agent's Account,  in same day funds.
The Advances owing to the Lender by the Borrower pursuant to the Loan Agreement,
and all payments made on account of principal thereof,  shall be recorded by the
Lender and, prior to any transfer  hereof,  endorsed on the grid attached hereto
which is part of this Promissory Note.

     This Promissory Note is one of the Notes referred to in, and is entitled to
the benefits of, the Loan Agreement. The Loan Agreement, among other things, (i)
provides  for the  making  of  Advances  by the  Lender to the  Borrower  on any
Business  Day during the period from the  Effective  Date until the  Termination
Date in an  aggregate  amount not to exceed at any time  outstanding  the Dollar
amount first above mentioned,  the  indebtedness of the Borrower  resulting from
the  Advances  being  evidenced  by this  Promissory  Note,  and  (ii)  contains
provisions for acceleration of the maturity hereof upon the happening of certain
stated events and also for  prepayments on account of principal  hereof prior to
the maturity hereof upon the terms and conditions therein specified.


                                                MEMC ELECTRONIC MATERIALS, INC.


                                                By:____________________________
                                                Title:

<PAGE>   19
                       ADVANCES AND PAYMENTS OF PRINCIPAL


<TABLE>
<CAPTION>
<S>                      <C>                    <C>                    <C>                      <C>
                                                Amount of Principal    Unpaid Principal
          Date           Amount of Advance      Paid or Prepaid        Balance                  Notation Made By


- ------------------------ ---------------------- ---------------------- ------------------------ --------------------

- ------------------------ ---------------------- ---------------------- ------------------------ --------------------

- ------------------------ ---------------------- ---------------------- ------------------------ --------------------

- ------------------------ ---------------------- ---------------------- ------------------------ --------------------

- ------------------------ ---------------------- ---------------------- ------------------------ --------------------

- ------------------------ ---------------------- ---------------------- ------------------------ --------------------
</TABLE>

<PAGE>   20
                                                                EXHIBIT B TO THE
                                                                  LOAN AGREEMENT


                           FORM OF NOTICE OF BORROWING


HULS CORPORATION, as Agent
   for the Lenders parties
   to the Loan Agreement
   referred to below
13801 Riverport Drive, Suite 300
Maryland Heights, Missouri 63376                                          [Date]
         Attention: _________________________

Ladies and Gentlemen:

     The  undersigned,  MEMC  ELECTRONIC  MATERIALS,  INC.,  refers  to the Loan
Agreement, dated as of September 23, 1998 (as amended, supplemented or otherwise
modified from time to time,  the "Loan  Agreement",  the terms  defined  therein
being  used  herein  as  therein  defined),  between  the  undersigned  and HULS
CORPORATION,  as Initial  Lender and as Agent for the  Lenders  thereunder,  and
hereby  gives you  notice,  irrevocably,  pursuant  to Section  2.02 of the Loan
Agreement,  that the  undersigned  hereby  requests a  Borrowing  under the Loan
Agreement,  and in that connection sets forth below the information  relating to
such Borrowing (the "Proposed  Borrowing") as required by Section 2.02(a) of the
Loan Agreement:

          (a) The  Business Day of the  Proposed  Borrowing is  _______________,
     ________.

          (b)   The   aggregate   amount   of   the   Proposed    Borrowing   is
     $________________.

          (c)  The  Repayment  Date of the  Advances  comprising  such  Proposed
     Borrowing is _______________, ____.

     The undersigned hereby certifies that the following  statements are true on
the  date  hereof,  and  will  be true  on and as of the  date  of the  Proposed
Borrowing:

          (i) the  representations  and  warranties  contained  in Section  4.01
     [(other than the last  sentence of  subsection  (e)  thereof)]* of the Loan
     Agreement  are  correct,  before and after  giving  effect to the  Proposed
     Borrowing and to the application of the proceeds therefrom,  as though made
     on and as of such date; and

          (ii) no event has  occurred  and is  continuing,  or would result from
     such Proposed Borrowing or from the application of the proceeds  therefrom,
     that constitutes a Default.

                                                 Very truly yours,

                                                 MEMC ELECTRONIC MATERIALS, INC.


                                                 By:____________________________
                                                 Title:

____________

*    To be included in any Borrowing Notice requesting a Borrowing to be made on
     any Business Day other than the Effective Date.

<PAGE>   21
                                                                EXHIBIT C TO THE
                                                                  LOAN AGREEMENT

                        FORM OF ASSIGNMENT AND ACCEPTANCE

     Reference is made to the Loan Agreement  dated as of September 23, 1998 (as
amended,  supplemented  or  otherwise  modified  from  time to time,  the  "Loan
Agreement") between MEMC ELECTRONIC MATERIALS, INC., a Delaware corporation (the
"Borrower"),  and HULS CORPORATION,  a company formed under the laws of Delaware
("HULS"),  as  Initial  Lender  and as  Agent  (the  "Agent")  for  the  Lenders
thereunder  (each as defined in the Loan  Agreement).  Terms defined in the Loan
Agreement are used herein with the same meaning.

     The "Assignor" and the "Assignee" referred to on Schedule 1 hereto agree as
follows:

          1. The  Assignor  hereby  sells and assigns to the  Assignee,  and the
     Assignee hereby purchases and assumes from the Assignor, an interest in and
     to the Assignor's rights and obligations under the Loan Agreement as of the
     date hereof equal to the percentage interest specified on Schedule 1 hereto
     of all outstanding  rights and obligations under the Loan Agreement.  After
     giving effect to such sale and  assignment,  the Assignee's  Commitment and
     the amount of the Advances  owing to the  Assignee  will be as set forth on
     Schedule 1 hereto.

          2. The Assignor (a)  represents  and warrants that it is the legal and
     beneficial  owner of the interest  being  assigned by it hereunder and that
     such  interest  is free  and  clear  of any  adverse  claim;  (b)  makes no
     representation  or warranty and assumes no  responsibility  with respect to
     any statements, warranties or representations made in or in connection with
     the Loan Agreement or the execution,  legality,  validity,  enforceability,
     genuineness,  sufficiency  or  value  of the Loan  Agreement  or any  other
     instrument  or  document   furnished   pursuant   thereto;   (c)  makes  no
     representation  or warranty and assumes no  responsibility  with respect to
     the financial condition of the Borrower or the performance or observance by
     the  Borrower of any of its  obligations  under the Loan  Agreement  or any
     other instrument or document furnished  pursuant thereto;  and (d) attaches
     the Note held by the  Assignor and requests  that the Agent  exchange  such
     Note for a new Note payable to the order of the Assignee in an amount equal
     to the  Commitment  assumed by the  Assignee  pursuant  hereto or new Notes
     payable to the order of the Assignee in an amount  equal to the  Commitment
     assumed by the Assignee pursuant hereto and the Assignor in an amount equal
     to the  Commitment  retained  by the  Assignor  under  the Loan  Agreement,
     respectively, as specified on Schedule 1 hereto.

          3. The Assignee  (a) confirms  that it has received a copy of the Loan
     Agreement,  together with copies of the financial statements referred to in
     Section 4.01 thereof and such other  documents  and  information  as it has
     deemed  appropriate  to make its own credit  analysis and decision to enter
     into this Assignment and Acceptance; (b) agrees that it will, independently
     and without  reliance upon the Agent,  the Assignor or any other Lender and
     based on such documents and information as it shall deem appropriate at the
     time,  continue  to make its own credit  decisions  in taking or not taking
     action  under  the Loan  Agreement;  (c)  confirms  that it is an  Eligible
     Assignee;  (d)  appoints  and  authorizes  the Agent to take such action as
     agent on its behalf and to exercise  such powers and  discretion  under the
     Loan Agreement as are delegated to the Agent by the terms thereof, together
     with such powers and discretion as are reasonably  incidental thereto;  (e)
     agrees  that it will  perform in  accordance  with  their  terms all of the
     obligations  that by the terms of the Loan  Agreement  are  required  to be
     performed by it as a Lender;  and (f) attaches  any U.S.  Internal  Revenue
     Service forms required under Section 2.12 of the Loan Agreement.

          4. Following the execution of this Assignment and Acceptance,  it will
     be delivered to the Agent for  acceptance  and recording by the Agent.  The
     effective date for this Assignment and Acceptance  (the  "Effective  Date")
     shall be the date of  acceptance  hereof  by the  Agent,  unless  otherwise
     specified on Schedule 1 hereto.

          5.  Upon  such  acceptance  and  recording  by  the  Agent,  as of the
     Effective  Date,  (a) the Assignee  shall be a party to the Loan  Agreement
     and, to the extent  provided in this  Assignment and  Acceptance,  have the
     rights and  obligations of a Lender  thereunder and (b) the Assignor shall,
     to the extent provided in this  Assignment and  Acceptance,  relinquish its
     rights and be released from its obligations under the Loan Agreement.

          6. Upon such acceptance and recording by the Agent, from and after the
     Effective  Date, the Agent shall make all payments under the Loan Agreement
     and the  Notes in  respect  of the  interest  assigned  hereby  (including,
     without limitation,  all payments of principal,  interest and facility fees
     with respect thereto) to the Assignee. The Assignor and Assignee shall make
     all  appropriate  adjustments  in payments under the Loan Agreement and the
     Notes for periods prior to the Effective Date directly between themselves.

          7. This Assignment and Acceptance  shall be governed by, and construed
     in accordance with, the laws of the State of New York.

          8. This  Assignment  and  Acceptance  may be executed in any number of
<PAGE>   22

     counterparts and by different parties hereto in separate counterparts, each
     of which  when so  executed  shall be deemed to be an  original  and all of
     which taken together shall constitute one and the same agreement.  Delivery
     of an executed  counterpart of Schedule 1 to this Assignment and Acceptance
     by  telecopier  shall be  effective  as  delivery  of a  manually  executed
     counterpart of this Assignment and Acceptance.

     IN WITNESS WHEREOF, the Assignor and the Assignee have caused Schedule 1 to
this  Assignment and Acceptance to be executed by their officers  thereunto duly
authorized as of the date specified thereon.

<PAGE>   23
                                   Schedule 1
                                       to
                            Assignment and Acceptance


Percentage interest assigned:                                    _______%
Assignee's Commitment:                                          $_______________
Aggregate outstanding principal amount of Advances assigned:    $_______________
Principal amount of Note payable to Assignee:                   $_______________
Principal amount of Note payable to Assignor:                   $_______________
Effective Date* :   ___________________, _____

                                               [NAME OF ASSIGNOR], as Assignor
                                             

                                                By:_____________________________
                                                Title:

                                                Date:____________________, _____


                                               [NAME OF ASSIGNEE], as Assignee


                                                By:_____________________________
                                                Title:


                                                Domestic Lending office
                                                [ADDRESS]


____________

*    This date should be no earlier than five  Business  Days after the delivery
     of this Assignment and Acceptance to the Agent.

<PAGE>   24

Accepted this ______ day
of _______________, ____


HULS CORPORATION, as Agent


By:__________________________
   Title:

<PAGE>   1
                                                                 EXHIBIT 10-YYY


October 1, 1998


To:      Marcel Coinne

                   INTERNATIONAL TRANSFER LETTER OF AGREEMENT

The MEMC  International  Transfer Policy ("Policy") applies to all international
transfers.  This letter of agreement will record our mutual understanding of the
current provisions of the Policy, as they apply specifically and individually to
you in your international transfer. This Letter of Agreement does not constitute
or create an employment  contract and does not replace the basic MEMC employment
contract.

This  agreement  supercedes  in its entirety all previous  agreements  with MEMC
Electronic Materials, Inc. and its affiliates, including but not limited to Huls
Benelux S.A. except as noted herein.

You are  currently  on  assignment  from Huls  Benelux  S.A. to MEMC  Electronic
Materials,  Inc. in the U.S. Your payroll  administration is handled by the Huls
Benelux  location.  This  location  will  close,  and as a  result  you  will be
indefinitely  transferred  from the Huls Benelux  payroll to the MEMC Electronic
Materials,  Inc. payroll in the U.S. The effective date of this transfer will be
October 1, 1998.

On this  transfer your initial  position  will be to continue as Corporate  Vice
President  Customer  Operations in St.  Peters,  Missouri as an employee of MEMC
Electronic Materials, Inc.

This letter outlines the total consideration for services to be performed.

1.   Compensation

     Your base salary initially will be $230,000 per year, reduced by the amount
     of contribution toward life insurance coverage, disability coverage and the
     pension plan that you would have paid under the Huls  Benelux  arrangement.
     The base salary will be based on and administered  under the salary plan of
     MEMC Electronic Materials,  Inc. Reviews of base salary will occur in a way
     similar to that you have experienced previously.

     You will also be eligible to participate in the MEMC Electronic  Materials,
     Inc. Annual Incentive Plan and Long-Term Incentive Plan.

     As a one-time  adjustment,  MEMC will pay you $115,000 either as a lump sum
     or in two (2)  installment  payments,  six months apart.  The first payment
     will  be made on  October  15,  1998 as a  separate  check,  provided  this
     Agreement  has  been  signed.  This  payment  will  not be  considered  for
     pensionable earnings.

2.   Medical and Dental Coverage

     You will be  covered by the MEMC  Medical  Plan and the MEMC  Dental  Plan,
     provided you make the necessary contributions. As a U.S. employee, you will
     now be eligible to contribute  on a pre-tax basis if you wish.  Pam Barnes,
     Benefit Representative, will explain this to you.

     Upon  retirement,  you will be eligible for coverage under the MEMC Retiree
     Medical Plan, as it is then provided to employees with like service.

     MEMC will not pay Belgian social contributions,  nor will coverage with DKV
     be continued. You may, however, continue that coverage if you wish, at your
     own expense.

3.   Life Insurance and Disability Coverage

     You will continue to be covered under the Royale Belge contracts, currently
     owned and  administered by Huls Benelux.  These contracts will be converted
     to an individual  policy for you, with coverage similar to that provided by
     Huls Benelux,  owned by MEMC Electronic  Materials,  Inc. Premiums for life
     insurance coverages paid by MEMC on your behalf may be considered wages for
     purposes  of U.S.  income tax.  Accordingly,  this will be reported on your
     Form W-2.

     No coverages  will be provided to you under the MEMC Life Insurance Plan or
     MEMC Disability Plan.

4.   Pension

     MEMC  Electronic  Materials,  Inc.  agrees to  continue  providing  pension
     coverage for you under the contract with Royal Belge.  The premium payments
     made by MEMC on your behalf will be considered  taxable income for you, and
     as such, will be included on your Form W-2 each year.

     MEMC will also continue to provide the MEMC Electronic Materials,  Inc. TCN
     Retirement Plan.  Except as otherwise  provided here, this agreement in the
     form provided to you since 1989 as an  attachment to your prior  employment
     agreements will continue without change.  MEMC agrees,  however, to provide
     the TCN  Supplement as either an annuity or in one lump-sum,  calculated as
     the  actuarial  present  value  of  the  annuity  benefit,   based  on  the
     
<PAGE>   2


     assumptions within the TCN Retirement Plan.

     All years of service with  Monsanto,  Huls and MEMC will be considered  for
     pension purposes.

     You will not be eligible for the MEMC Pension Plan,  the MEMC  Supplemental
     Pension Plan, or the MEMC Retirement Savings Plan.

5.   Vacation

     You will continue to be eligible for six (6) weeks vacation based upon your
     initial MEMC hire date.

6.   Travel Grants

     You will be entitled to receive one travel grant of a  round-trip  business
     class airfare to the country of origin for yourself and your spouse in each
     of three  years out of five  after  your  transfer.  There  will be no cash
     payment in lieu of travel.

     You may use the travel  grant any way you wish:  travel to place of origin,
     visits by relatives to the location of assignment  or vacation  travel to a
     location  other  than the point of  origin.  You will also be  entitled  to
     emergency  travel  grants  for  special  circumstances  such  as  death  in
     immediate family, serious illness, etc., for a period of five years.

7.   Income Tax Preparation Service

     Considering your long duration out of Belgium,  you will have no tax filing
     obligation  there. To ensure your tax  equalization  obligation you will be
     expected to continue to be tax equalized  through  September  1998. The tax
     equalization  settlement  process,  based on the year 1998,  will  continue
     during the coming year 1999 and beyond,  if required.  Any costs associated
     with tax equalization services will not result in taxable income to you.

     With the international  transfer, tax preparation services will continue to
     be provided  for you. The cost of such  services  will be borne by MEMC and
     will be provided for an indefinite period of time during your assignment in
     the U.S., plus one additional year after you return to Europe.  The cost of
     such services will be taxable income for you.

     Please  contact the tax  consultants to inform them of your transfer to the
     U.S.

8.   Other Services

     MEMC agrees to provide reasonable  services such as those provided by Akin,
     Gump attorneys and KPMG for estate planning,  tax planning and other normal
     executive  services for your personal use. The cost for these services will
     be taxable income to you.

     Any services provided to MEMC as required for administrative, accounting or
     tax  purposes  will be paid by MEMC  and will not be  included  as  taxable
     income to you.


9.   Home Loan

     At the time that you were initially  transferred to the U.S., MEMC provided
     a home loan of $50,000. You will repay that $50,000 when you sell the home,
     or if you become  employed  by another  employer  in the U.S.  MEMC will no
     longer  contribute  toward the monthly  mortgage  on the home,  and you may
     retain any increase in value  realized at the time of the sale of the home,
     over and above the $50,000 that was loaned to you. There will be no taxable
     income to you as a result of this loan, so long as the loan is secured with
     a Second Deed of Trust.

10.  Automobile

     You may purchase your current  automobile at a cost of $1,000.  This amount
     will be  deducted  from other  payments  due you on October 15,  1998.  The
     Company  will  have  no  further  obligation  to you  with  regard  to your
     automobile.

11.  Termination

     If you are terminated without cause, MEMC Electronic Materials, Inc. agrees
     to provide you with a lump sum  payment  equal to two weeks of pay for each
     year of service  plus one  additional  week of pay.  This  payment  will be
     subject to normal withholding taxes.

12.  Death

     Should you or your  spouse die in the  country of  employment,  the Company
     will pay the cost of  preparing  and  shipping  the  remains  to Europe for
     burial and for immediate  family funeral travel.  The Company will also pay
     all expenses  involved in relocation  of your spouse back to Europe.  These
     terms  will  normally  apply for a period  of 5 years  from the date of the
     transfer. The cost of these services will be taxable income to you.

<PAGE>   3


13.  Repatriation

     At the time of your  termination or  retirement,  the Company will move you
     and your spouse back to Europe  within a reasonable  time,  not to exceed 6
     months, after termination.  After the move, we agree to provide warehousing
     of your household  goods for some  reasonable  time period while you find a
     place  to  live.  The cost of these  services  will be  grossed-up  for tax
     purposes.

     The company  will assume no  relocation  obligation  if you are employed by
     another company.

If you are in agreement with the provisions  outlined above and those  contained
in the policy,  will you please date, sign, and return the original copy of this
letter to Peggy Stonum, retaining a copy for your files.

Best wishes to you on your new permanent transfer.


/s/ Klaus R. von Horde                      09/30/98
- -------------------------------             ---------------------------
Klause R. von Horde                                  Date
President and COO, MEMC, Inc.


/s/ Margaret B. Stonum                      09/30/98
- -------------------------------             ---------------------------
Margaret B. Stonum                                   Date
Director, Compensation & Benefits
Human Resources



Accepted:

/s/ Marcel Coinn                            09/30/98
- ------------------------------              --------------------------
Marcel Coinne                                        Date

<PAGE>   1
                                                                  EXHIBIT 10-ZZZ
                           REVOLVING CREDIT AGREEMENT

                         Dated as of September 23, 1998


     MEMC ELECTRONIC MATERIALS,  INC., a Delaware  corporation,  as the borrower
(the  "Borrower"),  and VEBA AG, a company  formed under the laws of the Federal
Republic of Germany  ("VEBA"),  as the initial lender (the "Initial Lender") and
as agent  (together  with any successor  appointed  pursuant to Article VII, the
"Agent") for the Lenders (as hereinafter defined), hereby agree as follows:


                                    ARTICLE I
                        DEFINITIONS AND ACCOUNTING TERMS

     SECTION  1.01.  Certain  Defined  Terms.  As used in  this  Agreement,  the
following  terms shall have the following  meanings (such meanings to be equally
applicable to both the singular and plural forms of the terms defined):

          "Advance" has the meaning specified in Section 2.01.

          "Affiliate" means, as to any Person,  any other Person that,  directly
     or indirectly,  controls,  is controlled by or is under common control with
     such Person or is a director  or officer of such  Person.  For  purposes of
     this  definition,  the term "control"  (including the terms  "controlling",
     "controlled  by" and "under  common  control  with") of a Person  means the
     possession,  direct  or  indirect,  of the  power to vote 5% or more of the
     voting  stock of such  Person or to direct  or cause the  direction  of the
     management  and policies of such Person,  whether  through the ownership of
     voting stock, by contract or otherwise.

          "Agent"  has the meaning  specified  in the recital of parties to this
     Agreement.

          "Agent's  Account"  means the Dollar  account of the Agent  maintained
     with such bank as the Agent shall  specify in writing to the  Borrower  and
     the Lenders from time to time.

          "Applicable  Spread" means a percentage  per annum equal to the excess
     of (a) the Bloomberg  fair market  sector  curves  (adjusted for the chosen
     interest  rate method)  applicable  two  business  days prior to October 1,
     1998,  to a B3 rated  industrial  borrower  for the period from  October 1,
     1998, through the latest possible Termination Date (taking into account, if
     applicable,   the  latest   Extension   Termination   Date)  over  (b)  the
     corresponding Swap Rate for such period.

          "Assignment and Acceptance" means an assignment and acceptance entered
     into by a Lender and an Eligible  Assignee  and  accepted by the Agent,  in
     substantially the form of Exhibit C hereto.

          "Bank" means any Lender other than the Initial Lender or any Affiliate
     of the Initial Lender.

          "Borrower" has the meaning specified in the recital of parties to this
     Agreement.

          "Borrowing" means the borrowing consisting of the Advances made by the
     Lenders.

          "Borrowing Notice" has the meaning specified in Section 2.02(a).

          "Business Day" means a day of the year on which banks are not required
     or  authorized  by law to close in New York  City  and,  if the  applicable
     business day relates to any Advances,  on which  dealings are carried on in
     the London interbank market.

          "Change of Control"  means the Initial  Lender or any Affiliate of the
     Initial  Lender,  through  any  transaction  or series of  transactions  or
     otherwise, no longer has beneficial ownership,  directly or indirectly,  of
     more than 50% of the shares of common stock of the Borrower.

          "Change of Control  Date" means the date of  occurrence of a Change of
     Control;  provided,  that if such  occurrence  is on or prior to January 1,
     2001, the occurrence shall be deemed to have occurred on January 1, 2001.

          "Commitment" has the meaning specified in Section 2.01.

          "Confidential   Information"   means  information  that  the  Borrower
     furnishes  to  the  Agent  or  any  Lender  in  a  writing   designated  as
     confidential,  but does not include any such information that is or becomes
     generally  available  to the public or that is or becomes  available to the
     Agent or such Lender from a source other than the Borrower, an Affiliate of
     the Borrower or an Affiliate of the Initial Lender.

          "Consolidated"  refers to the  consolidation of accounts in accordance
     with GAAP.

          "Debt" means (a)  indebtedness  for borrowed  money,  (b)  obligations
     evidenced by bonds,  debentures,  notes or other similar  instruments,  (c)

<PAGE>   2

     obligations to pay the deferred purchase price of property or services, (d)
     obligations  as lessee  under leases which shall have been or should be, in
     accordance  with  generally  accepted  accounting  principles,  recorded as
     capital leases, and (e) obligations under direct or indirect  guaranties in
     respect  of, and  obligations  (contingent  or  otherwise)  to  purchase or
     otherwise  acquire,  or  otherwise  to assure a  creditor  against  loss in
     respect of,  indebtedness or obligations of others of the kinds referred to
     in clause (a) through (d) of this definition..

          "Default"  means  any  Event  of  Default  or  any  event  that  would
     constitute an Event of Default but for the requirement that notice be given
     or time elapse or both.

          "Dollars"  and the sign  "$" each  means  lawful  money of the  United
     States of America.

          "EBIT" means,  with respect to the Borrower and its  Subsidiaries  for
     any period,  the sum of (a) net income (or net loss),  (b) interest expense
     and (c) income tax expense, in each case determined in accordance with GAAP
     for such period.

          "Effective Date" has the meaning specified in Section 3.01.

          "Eligible  Assignee"  means any Person approved by all of the Lenders;
     provided,  however,  that neither the Borrower  nor any  Subsidiary  of the
     Borrower shall qualify as an Eligible Assignee.

          "ERISA" means the Employee  Retirement Income Security Act of 1974, as
     amended  from time to time,  and the  regulations  promulgated  and rulings
     issued thereunder.

          "Eurodollar  Lending  Office"  means,  with  respect to any Bank,  the
     office of such Bank  specified as its  "Eurodollar  Lending  Office" in the
     Assignment  and  Acceptance  pursuant to which it became a Lender,  or such
     other office of such Bank as such Bank may from time to time specify to the
     Borrower and the Agent.

          "Eurocurrency  Liabilities"  has the meaning  assigned to that term in
     Regulation D of the Board of Governors of the Federal Reserve System, as in
     effect from time to time.

          "Eurodollar  Rate Reserve  Percentage" for any Interest Period for all
     Advances comprising part of the same Borrowing means the reserve percentage
     applicable  two Business Days before the first day of such Interest  Period
     under regulations issued from time to time by the Board of Governors of the
     Federal  Reserve  System (or any  successor)  for  determining  the maximum
     reserve  requirement   (including,   without  limitation,   any  emergency,
     supplemental or other marginal  reserve  requirement)  for a member bank of
     the Federal  Reserve System in New York City with respect to liabilities or
     assets consisting of or including Eurocurrency Liabilities (or with respect
     to any other category of liabilities that includes deposits by reference to
     which the interest rate on Advances is  determined)  having a term equal to
     such Interest Period.

          "Events of Default" has the meaning specified in Section 6.01.

          "Extension Certificate" has the meaning specified in Section 2.15.

          "Extension Request Notice" has the meaning set forth in Section 2.15.

          "Extension  Termination Date", if any, means the earlier of (a) either
     (i) the first  anniversary of October 1, 1999, or (ii) if there has been an
     applicable Extension Termination Date on or prior to December 31, 2000, the
     first  anniversary of such prior  Extension  Termination  Date, and (b) the
     termination in whole of the Commitments pursuant to Section 2.04 or Section
     6.01;  provided,  that in no event shall an Extension  Termination  Date be
     after October 1, 2001.

          "GAAP" has the meaning specified in Section 1.03.

          "Governmental Authority" means any nation or government,  any state or
     other  political  subdivision  thereof,  and any federal,  state,  local or
     foreign   court  or   governmental,   executive,   legislative,   judicial,
     administrative    or    regulatory    agency,    department,     authority,
     instrumentality, commission, board or similar body.

          "Indemnified Party" has the meaning specified in Section 8.04(b).

          "Initial  Lender" has the meaning  specified in the recital of parties
     to this Agreement.

          "Interest  Coverage Ratio" means, with respect to the Borrower and its
     Subsidiaries  on a  Consolidated  basis  for any  period,  a  ratio  of (a)
     Consolidated  EBIT of the Borrower and its  Subsidiaries for such period to
     (b) interest payable on all Debt during such period.

          "Interest Period" means, for each Advance  comprising part of the same
     Borrowing,  the period commencing on the date of such Advance and ending on
     the  last  day of the  period  selected  by the  Borrower  pursuant  to the

<PAGE>   3

     provisions below and, thereafter,  each subsequent period commencing on the
     last day of the  immediately  preceding  Interest  Period and ending on the
     last day of the period selected by the Borrower  pursuant to the provisions
     below.  The duration of each such Interest Period shall be one week or one,
     two, three or twelve months,  as the Borrower may, upon notice  received by
     the Agent not  later  than  11:00  A.M.  (New York City  time) on the third
     Business  Day  prior to the  first  day of such  Interest  Period,  select;
     provided, however, that:

               (a) the  Borrower  may not select any  Interest  Period that ends
          after the Termination Date;

               (b)  Interest  Periods  commencing  on the same date for Advances
          comprising part of the same Borrowing shall be of the same duration;

               (c) whenever the last day of any Interest  Period would otherwise
          occur  on a day  other  than a  Business  Day,  the  last  day of such
          Interest  Period  shall be  extended  to occur on the next  succeeding
          Business Day, provided,  however,  that, if such extension would cause
          the last day of such  Interest  Period to occur in the next  following
          calendar  month,  the last day of such Interest  Period shall occur on
          the next preceding Business Day; and

               (d) whenever the first day of any Interest Period occurs on a day
          of an  initial  calendar  month  for  which  there  is no  numerically
          corresponding  day in the calendar  month that  succeeds  such initial
          calendar  month by the number of months  equal to the number of months
          in such Interest  Period,  such Interest  Period shall end on the last
          Business Day of such succeeding calendar month.

          "Interest  Rate" for any Interest Period means a rate per annum at all
     times equal to the sum of (i) the British Bankers'  Association (BBA) LIBOR
     rate (as shown on the  Reuters  page  FRBD or  comparable  pages)  for such
     Interest  Period for such  Advance,  divided by a percentage  equal to 100%
     minus the Eurodollar Rate Reserve Percentage for such Interest Period, plus
     (ii) the Applicable Spread.

          "Lender"  means the Initial Lender and each Person that shall become a
     party hereto pursuant to Section 8.07.

          "Material  Adverse  Change" means any material  adverse  change in the
     business,  condition  (financial or  otherwise),  operations,  performance,
     properties   or   prospects  of  the  Borrower  or  the  Borrower  and  its
     Subsidiaries taken as a whole.

          "Note" means a promissory note of the Borrower payable to the order of
     any Lender,  substantially in the form of Exhibit A hereto,  evidencing the
     Debt of the Borrower to such Lender resulting from the Advance made by such
     Lender.

          "Other Taxes" has the meaning specified in Section 2.12(b).

          "Person" means an individual,  partnership,  corporation  (including a
     business trust), joint stock company,  trust,  unincorporated  association,
     joint venture,  limited  liability company or other entity, or a government
     or any political subdivision or agency thereof.

          "Register" has the meaning specified in Section 8.07(c).

          "Replacement Financing Arrangement" means a financing arrangement with
     any  Person who is not an  Affiliate  of the  Borrower  or the Agent or any
     Lender on  substantially  the terms which would apply hereunder  during the
     period from the then  applicable  Termination  Date to the latest  possible
     Extension  Termination  Date,  provided  that  the  interest  rate  of such
     Replacement Financing Arrangement shall be no higher than the Interest Rate
     and, if no lesser interest rate is available, shall be the Interest Rate.

          "Subsidiary" of any Person means any corporation,  partnership,  joint
     venture,  limited liability company, trust or estate of which (or in which)
     more  than 50% of (a) the  issued  and  outstanding  capital  stock  having
     ordinary voting power to elect a majority of the board of directors of such
     corporation (irrespective of whether at the time capital stock of any other
     class or classes of such corporation  shall or might have voting power upon
     the  occurrence  of any  contingency),  (b) the  interest in the capital or
     profits of such limited liability company,  partnership or joint venture or
     (c) the beneficial interest in such trust or estate is at the time directly
     or indirectly owned or controlled by such Person, by such Person and one or
     more of its other  Subsidiaries  or by one or more of such  Person's  other
     Subsidiaries;  provided,  however,  that the term  "Subsidiary"  shall  not
     include any joint  venture of the  Borrower  with  respect to any action or
     decision  of the board of  directors  of such joint  venture if, by written
     agreement,  such action or decision requires a vote in excess of the number
     of  members  of such  board  of  directors  elected  or  controlled  by the
     Borrower.

          "Swap Rate" means the US-Dollar  denominated  interbank  interest rate
     swap  rates/LIBOR  offered  rates as shown on  Reuters  page ICAP and other
     comparable  brokerage  pages,  adjusted for the chosen interest rate method
     (annual/semi-annual compounding, etc.).


<PAGE>   4

          "Taxes" has the meaning specified in Section 2.12(a).

          "Termination Date" means the earlier of (a) either October 1, 1999 or,
     if applicable,  the Extension  Termination  Date and (b) the termination in
     whole of the Commitments pursuant to Section 2.04 or Section 6.01.

          "United States" and "U.S." each means the United States of America.

          The words "include,"  "includes" and "including" shall be deemed to be
     followed by the phrase "without limitation."

     SECTION  1.02.  Computation  of  Time  Periods.  In this  Agreement  in the
computation of periods of time from a specified date to a later  specified date,
the word "from" means "from and  including"  and the words "to" and "until" each
means "to but excluding."

     SECTION 1.03.  Accounting  Terms.  All  accounting  terms not  specifically
defined  herein  shall  be  construed  in  accordance  with  generally  accepted
accounting  principles  consistent  with those applied in the preparation of the
financial statements referred to in Section 4.01(e) ("GAAP").


                                   ARTICLE II
                        AMOUNTS AND TERMS OF THE ADVANCES

     SECTION 2.01. The Advances.  Each Lender severally agrees, on the terms and
conditions  hereinafter  set forth, to make advances (each, an "Advance") to the
Borrower  from time to time on any  Business  Day  during  the  period  from the
Effective Date until the Termination  Date in an amount not to exceed the amount
set forth opposite such Lender's name on the signature  pages hereof or, if such
Lender has entered into any Assignment and Acceptance, set forth for such Lender
in the Register  maintained by the Agent  pursuant to Section  8.07(c),  as such
amount may be reduced  pursuant to Section  2.04 (such  Lender's  "Commitment").
Each  Borrowing  shall be in an aggregate  amount of  $5,000,000  or an integral
multiple of $5,000,000 in excess thereof and shall be made simultaneously by the
Lenders ratably according to their respective Commitments.  Within the limits of
each  Lender's  Commitment,  the  Borrower  may borrow and  reborrow  under this
Section 2.01.

     SECTION 2.02.  Making the  Advances.  (a) Each  Borrowing  shall be made on
notice,  given not  later  than  11:00  A.M.  (New York City  time) on the third
Business Day prior to the date of the proposed  Borrowing by the Borrower to the
Agent,  which shall give to each Lender prompt  notice  thereof by telecopier or
telex. Each notice of a Borrowing (a "Borrowing  Notice") shall be by telephone,
confirmed  immediately in writing,  or telecopier or telex, in substantially the
form of Exhibit B hereto,  specifying therein, among other things, the requested
(i) date of such  Borrowing,  (ii) the  amount of such  Borrowing  and (iii) the
initial Interest Period for such Advances.  Each Lender shall, before 11:00 A.M.
(New York  City  time) on the date of such  Borrowing,  make  available  for the
account of its Eurodollar Lending Office to the Agent at the Agent's Account, in
same day funds,  such  Lender's  ratable  portion of such  Borrowing.  After the
Agent's receipt of such funds and upon fulfillment of the applicable  conditions
set forth in  Article  III,  the Agent  will make such  funds  available  to the
Borrower by  depositing  the proceeds of the Advances in such Dollar  account of
the Borrower (or of such Person as the Borrower  shall  specify to the Lender in
the  Borrowing   Notice  or  by  other  written   notice  to  the  Lender  given
simultaneously with or prior to such Borrowing Notice) maintained with such bank
as the Borrower shall specify to the Agent in such Borrowing Notice.

     The parties hereto understand and agree that the Initial Lender may, in its
sole  discretion  (but shall  have no  obligation  to),  designate  a  financial
institution  or  another  Person to perform  the  Initial  Lender's  obligations
hereunder  in  accordance  with the  terms  hereof.  The  Borrower  agrees  that
performance  of any such  obligation by any such designee of the Initial  Lender
shall be deemed to constitute performance by the Initial Lender for all purposes
of this Agreement and the Note and shall  discharge the Initial Lender from such
obligation to the extent of such performance.

     (b)  Anything  in  subsection  (a) of this  Section  2.02  to the  contrary
notwithstanding,  the Borrower may not request a Borrowing if the  obligation of
the Lenders to make Advances shall then be suspended pursuant to Section 2.10.

     (c) Each Borrowing  Notice  delivered by the Borrower to the Agent shall be
irrevocable  and binding on the  Borrower.  The Borrower  shall  indemnify  each
Lender against any loss, cost or expense  incurred by such Lender as a result of
any failure to fulfill on or before the date specified in such Borrowing  Notice
for  such  Borrowing  the  applicable  conditions  set  forth  in  Article  III,
including, without limitation, any loss (including loss of anticipated profits),
cost or  expense  incurred  by  reason of the  liquidation  or  reemployment  of
deposits or other  funds  acquired by such Lender to fund the Advance to be made
by such Lender as part of such Borrowing when such Advance,  as a result of such
failure, is not made on such date.

     (d) The Agent shall only make  available to the Borrower on the date of any
Borrowing the ratable  portion of such Borrowing of each Lender that such Lender
has made available to the Agent on or prior to the date of such Borrowing.

     (e) The  failure of any Lender to make the Advance to be made by it as part

<PAGE>   5

of any Borrowing shall not relieve any other Lender of its  obligation,  if any,
hereunder to make its Advance on the date of such Borrowing, but no Lender shall
be  responsible  for the  failure of any other  Lender to make the Advance to be
made by such other Lender on the date of any Borrowing.

     SECTION 2.03.  Commitment  Fee. The Borrower agrees to pay to the Agent for
the  account  of each  Lender a  commitment  fee on the  unused  portion of such
Lender's  Commitment  from the Effective  Date in the case of the Initial Lender
and from the effective date specified in the Assignment and Acceptance  pursuant
to  which it  became  a  Lender  in the  case of each  other  Lender  until  the
Termination  Date at a rate per annum  equal to 1/4 of 1%,  payable  in  arrears
quarterly  on  the  last  day of  each  March,  June,  September  and  December,
commencing December 31, 1998, and on the Termination Date.

     SECTION 2.04.  Optional  Termination or Reduction of the  Commitments.  The
Borrower shall have the right,  upon at least three Business Days' notice to the
Agent,  to terminate in whole or reduce  ratably in part the unused  portions of
the respective Commitments of the Lenders,  provided that each partial reduction
shall be in the  aggregate  amount of  $5,000,000  or an  integral  multiple  of
$1,000,000 in excess thereof.

     SECTION  2.05.  Repayment.  The  Borrower  shall repay to the Agent for the
ratable account of the Lenders on the Termination  Date the aggregate  principal
amount of the Advances then outstanding.

     SECTION 2.06.  Interest.  (a) Interest on the Advances.  The Borrower shall
pay interest on the unpaid principal amount of each Advance owing to each Lender
from the date of such Advance until such  principal  amount shall have been paid
in full at an interest  rate per annum equal to the  Interest  Rate,  payable in
arrears on the last day of such  Interest  Period  and on the date such  Advance
shall be paid in full.

     (b) Interest on Overdue Amounts.  In the event that any principal amount of
any Advance or any interest,  fees,  costs,  expenses or other  amounts  payable
hereunder are not paid when due, the Borrower  shall pay interest on such unpaid
amount  from the date such  amount is due until the date such  amount is paid in
full,  payable on demand,  at an interest  rate per annum equal to the  interest
rate referred to in subsection (a) of this Section 2.06 then in effect plus 2%.

     SECTION 2.07. Reserved.

     SECTION 2.08. Interest Rate Determination.  (a) The Agent shall give prompt
notice  to the  Borrower  and  the  Lenders  of  the  applicable  interest  rate
determined by the Agent for purposes of Section 2.06(a).

     (b) If the  Borrower  shall fail to select  the  duration  of any  Interest
Period for any  Advances in  accordance  with the  provisions  contained  in the
definition  of "Interest  Period" in Section 1.01,  the Agent will  forthwith so
notify the Borrower and the Lenders and such Advances will automatically, on the
last day of the then existing Interest Period therefor,  convert into an Advance
bearing  interest  at the  Interest  Rate  applicable  to  Advances  of the same
aggregate amount having an Interest Period of twelve months.

     (c) On the date on which the aggregate  unpaid principal amount of Advances
comprising  any  Borrowing  shall  be  reduced,  by  payment  or  prepayment  or
otherwise,  to less than $5,000,000,  such Advances shall automatically  convert
into an Advance bearing  interest at the Interest Rate applicable to Advances of
the same aggregate amount having an Interest Period of twelve months.

     SECTION 2.09.  Increased Costs,  Etc. If due to either (a) the introduction
of or any change (including, without limitation, any change by way of imposition
or increase of reserve  requirements) in or in the  interpretation of any law or
regulation or (b) the compliance  with any guideline or request from any central
bank or other  Governmental  Authority (whether or not having the force of law),
there  shall be any  increase  in the cost to any  Bank of  agreeing  to make or
making,  funding or maintaining an Advance, then the Borrower shall from time to
time, upon demand by such Bank (with a copy of such demand to the Agent), pay to
the Agent  for the  account  of such  Bank  additional  amounts  sufficient  (as
applicable) to compensate such Bank for such increased cost. A certificate as to
the amount of such increased cost, submitted to the Borrower by such Bank, shall
be conclusive and binding for all purposes, absent manifest error.

     SECTION  2.10.  Illegality.  Notwithstanding  any other  provision  of this
Agreement, if any Bank shall notify the Borrower that any law or regulation,  or
the  introduction  of or any  change in or in the  interpretation  of any law or
regulation,  makes  it  unlawful,  or any  central  bank or  other  Governmental
Authority asserts that it is unlawful,  for such Bank to perform its obligations
hereunder  to make an Advance or to fund or maintain an Advance  hereunder,  (a)
the  obligation  of such Bank to make,  fund and maintain  any Advance  shall be
suspended  until such Bank  shall  notify the  Borrower  that the  circumstances
causing such suspension no longer exist, (b) such Bank shall promptly notify the
Borrower of such circumstances and such suspension,  and (c) unless the Borrower
and such Bank shall have  otherwise  agreed  within  ten  Business  Days of such
notice,  the Borrower shall  forthwith on such tenth Business Day prepay in full
the Advances then outstanding together with interest accrued thereon.

     SECTION 2.11.  Payments and Computations.  (a) The Borrower shall make each
payment  hereunder  and under the Notes not later than 1:00 P.M.  (New York City
time) on the day when due in Dollars  to the Agent at the  Agent's  Account,  in

<PAGE>   6

each case in immediately  available  funds.  The Agent will promptly  thereafter
cause to be  distributed  like funds  relating  to the payment of  principal  or
interest or fees ratably (other than amounts  payable  pursuant to Section 2.09,
2.12 or 8.04(c)) to the Lenders for the account of their  respective  Eurodollar
Lending  Offices,  and like funds  relating to the  payment of any other  amount
payable to any Lender to such Lender for the account of its  Eurodollar  Lending
Office,  in each  case to be  applied  in  accordance  with  the  terms  of this
Agreement.  Upon its acceptance of an Assignment and Acceptance and recording of
the information  contained  therein in the Register pursuant to Section 8.07(d),
from and after the effective date specified in such  Assignment and  Acceptance,
the Agent shall make all  payments  hereunder  and under the Notes in respect of
the interest assigned thereby to the Lender assignee thereunder, and the parties
to such Assignment and Acceptance shall make all appropriate adjustments in such
payments for periods prior to such effective date directly between themselves.

     (b) All computations of interest and of fees shall be made in good faith by
the  Agent on the  basis of a year of 360 days  for the  actual  number  of days
(including the first day but excluding the last day) occurring in the period for
which such interest or fees are payable.

     (c) Whenever any payment hereunder or under the Notes shall be stated to be
due on a day other than a Business  Day,  such payment shall be made on the next
succeeding  Business  Day,  and such  extension  of time  shall in such  case be
included in the  computation  of payment of interest or fee, as the case may be;
provided, however, that, if such extension would cause payment of interest on or
principal of any Advances to be made in the next following  calendar month, such
payment shall be made on the next preceding Business Day.

     (d) Unless the Agent shall have received  notice from the Borrower prior to
the date on which any payment is due to the Lenders  hereunder that the Borrower
will not make such  payment in full,  the Agent may assume that the Borrower has
made  such  payment  in full to the Agent on such  date and the  Agent  may,  in
reliance upon such  assumption,  cause to be  distributed to each Lender on such
due date an  amount  equal to the  amount  then due such  Lender.  If and to the
extent the  Borrower  shall not have so made such  payment in full to the Agent,
each Lender shall repay to the Agent forthwith on demand such amount distributed
to such Lender together with interest  thereon,  for each day from the date such
amount is  distributed  to such Lender  until the date such  Lender  repays such
amount to the Agent, at the Federal Funds Rate.

     SECTION 2.12. Taxes. (a) Any and all payments by the Borrower  hereunder or
under the Notes shall be made in accordance with Section 2.11, free and clear of
and without deduction for any and all present or future taxes, levies,  imposts,
deductions,  charges or withholdings,  and all liabilities with respect thereto,
excluding,  in the case of each Lender and the Agent,  net income taxes that are
imposed by the United States and net income taxes (or franchise taxes imposed in
lieu  thereof)  that are  imposed  on such  Lender  or the Agent by the state or
foreign  jurisdiction  under the laws of which such  Lender or the Agent (as the
case may be) is organized or any political  subdivision thereof and, in the case
of each Lender,  net income taxes (or  franchise  taxes imposed in lieu thereof)
that are  imposed on such  Lender by the state or foreign  jurisdiction  of such
Lender's  Eurodollar  Lending Office or any political  subdivision  thereof (all
such nonexcluded taxes, levies, imposts, deductions,  charges,  withholdings and
liabilities  in  respect  of  payments   hereunder  or  under  the  Notes  being
hereinafter referred to as "Taxes"). If the Borrower shall be required by law to
deduct any Taxes from or in respect of any sum  payable  hereunder  or under any
Note, (i) the sum payable shall be increased as may be necessary so that,  after
making all required deductions  (including  deductions  applicable to additional
sums payable  under this  Section  2.12),  such Lender or the Agent  receives an
amount equal to the sum it would have received had no such deductions been made,
(ii) the Borrower  shall make such  deductions  and (iii) the Borrower shall pay
the full amount deducted to the relevant  taxation  authority or other authority
in accordance with applicable law.

     (b) In  addition,  the  Borrower  shall pay any  present  or future  stamp,
documentary,  excise, property or other taxes, charges or levies that arise from
any payment made hereunder or under the Notes or from the execution, delivery or
registration  of, or  otherwise  with  respect to, this  Agreement  or the Notes
(hereinafter referred to as "Other Taxes").

     (c) The  Borrower  shall  indemnify  each Lender and the Agent for the full
amount of Taxes or Other  Taxes and for the full  amount of Taxes or Other Taxes
imposed by any  jurisdiction  on amounts payable under this Section 2.12 imposed
on or paid by such  Lender or the  Agent  (as the case may be) or any  liability
(including penalties, additions to tax, interest and expenses) arising therefrom
or with respect thereto, whether or not such Taxes or Other Taxes were correctly
or legally asserted.  This indemnification shall be made within 30 days from the
date such Lender or the Agent makes written demand therefor.

     (d) Within 30 days after the date of any  payment  of Taxes,  the  Borrower
shall  furnish to the Agent,  at its address  referred to in Section  8.02,  the
original receipt of payment or a certified copy of such receipt. If no Taxes are
payable in respect of any payment  hereunder  or under the Notes,  the  Borrower
shall furnish to the Agent, at such address, a certificate from each appropriate
taxing authority,  or an opinion of counsel acceptable to the Lenders, in either
case stating that such payment is exempt from or not subject to Taxes.

     (e) Each  Lender  organized  under the laws of a  jurisdiction  outside the
United States shall, on the Effective Date in the case of the Initial Lender and

<PAGE>   7

on the date of the  Assignment  and  Acceptance  pursuant  to which it  became a
Lender in the case of each other  Lender,  and from time to time  thereafter  if
requested  in  writing  by the  Borrower  or the Agent (but only so long as such
Lender  remains  lawfully  able to do so),  provide each of the Borrower and the
Agent with Internal  Revenue Service form 1001 or 4224, as  appropriate,  or any
successor or other form prescribed by the Internal Revenue  Service,  certifying
that such Lender is exempt from or entitled to a reduced  rate of United  States
withholding tax on payments of interest pursuant to this Agreement or the Notes.
If the form  provided by such Lender at the time such Lender  becomes a party to
this Agreement indicates a United States interest withholding tax rate in excess
of zero,  withholding  tax at such rate shall be considered  excluded from Taxes
unless and until such Lender  provides the  appropriate  form  certifying that a
lesser rate applies, whereupon withholding tax at such lesser rate only shall be
considered  excluded  from Taxes for periods  governed  by such form;  provided,
however, that, if at the date of the Assignment and Acceptance pursuant to which
a Lender becomes a party to this Agreement,  the Lender assignor was entitled to
payments under Section 2.12(a) in respect of United States  withholding tax with
respect to interest  paid at such date,  then,  to such  extent,  the term Taxes
shall  include  (in  addition  to  withholding  taxes that may be imposed in the
future or other amounts otherwise includable in Taxes) United States withholding
tax, if any, applicable with respect to the Lender assignee on such date. If any
form or document  referred to in this  subsection (e) requires the disclosure of
information,  other than  information  necessary  to compute the tax payable and
information required on the date hereof by Internal Revenue Service form 1001 or
4224, that the Lender reasonably considers to be confidential,  the Lender shall
give notice  thereof to the  Borrower  and shall not be  obligated to include in
such form or document such confidential information.

     (f) For any period with respect to which a Lender has failed to provide the
Borrower with the  appropriate  form described in Section 2.12(e) (other than if
such failure is due to a change in law occurring subsequent to the date on which
a form originally was required to be provided,  or if such form otherwise is not
required under the first sentence of Section 2.12(e)  above),  such Lender shall
not be entitled to  indemnification  under Section 2.12(a) with respect to Taxes
imposed by the United States; provided,  however, that should such Lender become
subject to Taxes  because of its failure to deliver a form  required  hereunder,
the Borrower  shall take such steps as such Lender shall  reasonably  request to
assist such Lender to recover such Taxes.

     SECTION  2.13.  Sharing of  Payments,  Etc. If any Lender  shall obtain any
payment (whether  voluntary,  involuntary,  through the exercise of any right of
setoff, or otherwise) on account of the Advance owing to it (other than pursuant
to Section 2.09,  2.12 or 8.04(c)) in excess of its ratable share of payments on
account of the Advances obtained by all the Lenders, such Lender shall forthwith
purchase from the other  Lenders such  participations  in the Advances  owing to
them as shall be necessary to cause such  purchasing  Lender to share the excess
payment ratably with each of them; provided, however, that if all or any portion
of such excess payment is thereafter recovered from such purchasing Lender, such
purchase  from each Lender shall be rescinded and such Lender shall repay to the
purchasing  Lender the purchase  price to the extent of such  recovery  together
with an amount equal to such Lender's ratable share (according to the proportion
of (a) the amount of such Lender's required repayment to (b) the total amount so
recovered  from the  purchasing  Lender) of any interest or other amount paid or
payable by the  purchasing  Lender in respect of the total amount so  recovered.
The Borrower agrees that any Lender so purchasing a  participation  from another
Lender  pursuant to this  Section 2.13 may, to the fullest  extent  permitted by
law,  exercise  all its rights of payment  (including  the right of setoff) with
respect  to such  participation  as fully  as if such  Lender  were  the  direct
creditor of the Borrower in the amount of such participation.

     SECTION  2.14.  Use of  Proceeds.  The  proceeds of the  Advances  shall be
available (and the Borrower  agrees that it shall use such proceeds)  solely for
general corporate purposes of the Borrower and its Subsidiaries.

     SECTION 2.15. Extension.  If the then applicable Termination Date is a date
on or before  December  31,  2000 and the  Borrower  may desire that the Lenders
extend the then applicable  Termination Date to the Extension  Termination Date,
then (a) the  Borrower  shall give written  notice of said fact (the  "Extension
Request  Notice")  to the Agent and the  Lenders  no later  than four (4) months
before the  Termination  Date,  (b) the  Borrower  shall use its best efforts to
obtain and enter  into on or before  the date  which is two months  prior to the
Termination  Date a Replacement  Financing  Arrangement with an interest rate no
higher than the  Interest  Rate and (c) if the  Borrower  shall not have entered
into a  Replacement  Financing  Arrangement  on or before  the date which is two
months prior to the  Termination  Date,  the Borrower shall deliver to the Agent
and the Lenders a certificate of the Borrower (the "Extension  Certificate") (x)
certifying  that the  Borrower  has not  entered  into a  Replacement  Financing
Arrangement,  but the  Borrower  used its best  efforts to do so as  required by
clause (b) and setting  forth such  evidence and back-up  detail as necessary to
demonstrate  the efforts  made,  including a written  letter from each bank from
which  a  Replacement  Financing  Arrangement  as  required  by  clause  (b) was
requested, indicating that Borrower made such a request and that the request was
denied,  and  (y)  requesting  that  the  Termination  Date be  extended  to the
Extension  Termination Date. For purposes of this Section, the Borrower shall be
deemed  to have  complied  with the  requirement  to use its "best  efforts"  by
requesting  from  and,  if  applicable,  diligently  negotiating  a  Replacement
Financing  Arrangement  as  required  by  clause  (b)  with  each of  three  (3)
commercial  banks that are  nationally  recognized in the United States and each
have total assets in excess of  $20,000,000,000.  The Agent shall have the right

<PAGE>   8

to  designate,  within  ten (10)  Business  Days after  receipt of an  Extension
Request  Notice,  one of the three banks referred to in the preceding  sentence.
For purposes of this Section,  diligent  negotiation  shall mean  negotiation in
good faith and without denial or unreasonable delay of any reasonable request by
any such bank for information in connection with its  consideration of providing
a Replacement  Financing  Arrangement  to Borrower.  For the avoidance of doubt,
nothing  herein is intended to prevent  Borrower  from  obtaining a  Replacement
Financing Arrangement on terms equal to or better than those provided hereunder.

     Following  receipt  of the  Extension  Certificate,  the Agent  and/or  the
Lenders shall have the right (without any obligation to do so) to obtain for the
Borrower a Replacement  Financing  Arrangement  on terms equal to or better than
those provided hereunder.

     If the Borrower has (a) delivered the Extension  Request  Notice within the
time period  specified above, (b) used its best efforts to obtain and enter into
a  Replacement  Financing  Arrangement  with an interest rate no higher than the
Interest Rate and delivered  the  Extension  Certificate  within the time period
specified above and (c) not unreasonably or in bad faith refused to enter into a
Replacement  Financing  Arrangement  (with  terms  equal to or better than those
provided hereunder) obtained for the Borrower by the Agent or any of the Lenders
pursuant to the preceding  paragraph,  the Termination Date shall be extended to
the Extension Termination Date and the interest rate shall be the Interest Rate.

     The  Borrower  shall  be  responsible  for  the  payment  of any  customary
commitment  fee and  other  fees in  connection  with  obtaining  a  Replacement
Financing Arrangement.

     For the avoidance of doubt, in no event shall an Extension Termination Date
be requested by the Borrower after October 1, 2000 or be on a date after October
1, 2001.


                                   ARTICLE III
                     CONDITIONS TO EFFECTIVENESS AND LENDING

     SECTION  3.01.  Conditions  Precedent  to  Effectiveness  of Section  2.01.
Section 2.01 of this  Agreement  shall  become  effective on and as of the first
date (the  "Effective  Date") on which the following  conditions  precedent have
been satisfied:

          (a) There shall have  occurred no Material  Adverse  Change since June
     30, 1998.

          (b) There shall exist no action,  suit,  investigation,  litigation or
     proceeding  affecting  the Borrower or any of its  Subsidiaries  pending or
     threatened in writing before any court,  governmental  agency or arbitrator
     that  (i) may  materially  adversely  affect  the  financial  condition  or
     operations of the Borrower or any of its  subsidiaries  or (ii) purports to
     affect the legality,  validity or  enforceability  of this Agreement or any
     Note or the consummation of the transactions contemplated hereby.

          (c) On the Effective Date, the following  statements shall be true and
     the Agent shall have  received a  certificate  signed by a duly  authorized
     officer of the Borrower, dated the Effective Date, stating that:

               (i) the representations and warranties  contained in Section 4.01
          are correct on and as of the Effective Date, and

               (ii) no event has occurred and is continuing  that  constitutes a
          Default.

          (d) The Agent shall have received on or before the Effective  Date the
     following,  each dated such date, in form and substance satisfactory to the
     Lenders (except for the Notes):

               (i) executed  counterparts  of this  Agreement  duly executed and
          delivered by the Borrower;

               (ii) the Notes to the order of the Lenders;

               (iii)  certified  copies  of  the  resolutions  of the  board  of
          directors of the Borrower  approving this Agreement and the Notes, and
          of all  documents  evidencing  other  necessary  corporate  action and
          governmental approvals, if any, with respect to this Agreement and the
          Notes; and

               (iv) a certificate of the Secretary or an Assistant  Secretary of
          the Borrower  certifying the names and true signatures of the officers
          of the Borrower  authorized  to sign this  Agreement and the Notes and
          the other documents to be delivered hereunder.

     SECTION 3.02.  Conditions  Precedent to each  Borrowing.  The obligation of
each  Lender to make an  Advance  on the  occasion  of each  Borrowing  shall be
subject to the conditions  precedent that the Effective Date shall have occurred
and on the date of such  Borrowing the following  statements  shall be true (and
each of the giving of the applicable  Borrowing Notice and the acceptance by the
Borrower of the proceeds of such Borrowing shall constitute a representation and
warranty by the Borrower that on the date of such Borrowing such  statements are

<PAGE>   9

true):

          (a) the  representations  and  warranties  contained  in Section  4.01
     (other than the last sentence of subsection (e) thereof) are correct on and
     as of the date of such  Borrowing,  before and after giving  effect to such
     Borrowing and to the application of the proceeds therefrom,  as though made
     on and as of such date, and

          (b) no event has occurred and is continuing, or would result from such
     Borrowing  or  from  the  application  of  the  proceeds  therefrom,   that
     constitutes a Default.

     SECTION  3.03.   Determinations   Under  Section  3.01.   For  purposes  of
determining  compliance  with the  conditions  specified in Section  3.01,  each
Lender  shall be deemed to have  consented  to,  approved  or  accepted or to be
satisfied with each document or other matter required thereunder to be consented
to or approved by or acceptable or satisfactory to the Lenders unless an officer
of the Agent  responsible  for the  transactions  contemplated by this Agreement
shall have received notice from such Lender prior to the date that the Borrower,
by notice to the Lenders,  designates as the proposed Effective Date, specifying
its  objection  thereto.  The Agent  shall  promptly  notify the  Lenders of the
occurrence of the Effective Date.


                                   ARTICLE IV
                         REPRESENTATIONS AND WARRANTIES

     SECTION 4.01.  Representations and Warranties of the Borrower. The Borrower
represents and warrants as follows:

          (a) The Borrower is a corporation duly organized, validly existing and
     in good standing under the laws of the State of Delaware.

          (b) The  execution,  delivery and  performance by the Borrower of this
     Agreement and the Notes are within the Borrower's  corporate  powers,  have
     been  duly  authorized  by  all  necessary  corporate  action,  and  do not
     contravene  (i) the  Borrower's  charter  or by-laws or (ii) any law or any
     contractual restriction binding on or affecting the Borrower.

          (c) No  authorization or approval or other action by, and no notice to
     or  filing  with,  any  Governmental  Authority  is  required  for  the due
     execution,  delivery and  performance by the Borrower of this Agreement and
     the Notes.

          (d) This Agreement has been,  and the Notes when  delivered  hereunder
     will have been, duly executed and delivered by the Borrower. This Agreement
     is, and each of the Notes when delivered  hereunder  will be, legal,  valid
     and binding obligations of the Borrower enforceable against the Borrower in
     accordance with their respective terms.

          (e)  The   Consolidated   balance  sheets  of  the  Borrower  and  its
     Subsidiaries  as at December  31, 1997 and June 30,  1998,  and the related
     Consolidated  statements  of income and cash flows of the  Borrower and its
     Subsidiaries  for the fiscal year and the six months then ended,  copies of
     which have been  furnished to the  Lenders,  fairly  present the  financial
     condition  of the  Borrower  and its  Subsidiaries  as at such date and the
     results of the  operations  of the  Borrower and its  Subsidiaries  for the
     period  ended on such date,  all in  accordance  with GAAP.  Since June 30,
     1998, there has been no Material Adverse Change.

          (f) There is no pending or threatened  action or proceeding  affecting
     the  Borrower  or any of its  Subsidiaries  before any court,  governmental
     agency  or  arbitrator,  that  (i)  may  materially  adversely  affect  the
     financial   condition  or   operations  of  the  Borrower  or  any  of  its
     Subsidiaries  or  (ii)  purports  to  affect  the  legality,   validity  or
     enforceability  of this Agreement or the Notes or the  consummation  of the
     transactions contemplated hereby.

          (g) The Borrower is not engaged in the  business of  extending  credit
     for the purpose of purchasing or carrying  margin stock (within the meaning
     of  Regulation U issued by the Board of  Governors  of the Federal  Reserve
     System),  and no proceeds of any Advance  will be used to purchase or carry
     any  margin  stock  or to  extend  credit  to  others  for the  purpose  of
     purchasing or carrying any margin stock.

          (h) The Advances  and all related  obligations  of the Borrower  under
     this  Agreement  and the Notes  rank pari  passu  with all other  unsecured
     obligations  of the  Borrower  that are  not,  by  their  terms,  expressly
     subordinate to such other obligations of the Borrower.


                                    ARTICLE V
                            COVENANTS OF THE BORROWER

     SECTION  5.01.  Affirmative  Covenants.  On and after the Change of Control
Date and so long as any Advance shall remain unpaid or any Lender shall have any
Commitment  hereunder,  the Borrower  will,  unless the Lenders shall  otherwise
consent in writing:


<PAGE>   10

          (a)  Compliance  with  Laws,  Etc.  Comply,  and  cause  each  of  its
     Subsidiaries to comply, in all material respects, with all applicable laws,
     rules,   regulations  and  orders,  such  compliance  to  include,  without
     limitation, compliance with ERISA and environmental laws.

          (b) Payment of Taxes,  Etc. Pay and  discharge,  and cause each of its
     Subsidiaries to pay and discharge, before the same shall become delinquent,
     (i) all taxes,  assessments and governmental charges or levies imposed upon
     it or upon its property and (ii) all lawful claims that,  if unpaid,  might
     by law become a lien upon its property; provided, however, that neither the
     Borrower nor any of its Subsidiaries  shall be required to pay or discharge
     any such tax,  assessment,  charge or claim that is being contested in good
     faith and by proper  proceedings and as to which  appropriate  reserves are
     being maintained, unless and until any lien resulting therefrom attaches to
     its property and becomes enforceable against its other creditors.

          (c) Preservation of Corporate  Existence,  Etc. Preserve and maintain,
     and cause each of its Subsidiaries to preserve and maintain,  its corporate
     existence,  rights  (charter  and  statutory)  and  franchises;   provided,
     however,  that neither the Borrower  nor any of its  Subsidiaries  shall be
     required to preserve  any right or  franchise  if the board of directors of
     the  Borrower or such  Subsidiary  shall  determine  that the  preservation
     thereof  is no longer  desirable  in the  conduct  of the  business  of the
     Borrower or such Subsidiary,  as the case may be, and that the loss thereof
     is not  disadvantageous  in any  material  respect  to the  Borrower,  such
     Subsidiary or the Lenders.

          (d)  Keeping of Books.  Keep,  and cause each of its  Subsidiaries  to
     keep, proper books of record and account, in which full and correct entries
     shall be made of all financial  transactions and the assets and business of
     the Borrower and each such  Subsidiary in  accordance  with GAAP or, in the
     case of any Subsidiary  organized  under the laws of a  jurisdiction  other
     than the  United  States  or any  state  thereof,  the  equivalent  of GAAP
     applicable in such jurisdiction.

          (e) Maintenance of Properties,  Etc. Maintain and preserve,  and cause
     each of its  Subsidiaries  to maintain and preserve,  all of its properties
     that are used or useful in the  conduct  of its  business  in good  working
     order and condition, ordinary wear and tear excepted.

          (f) Reporting Requirements. Furnish to the Lenders:

               (i) as soon as  available  and in any event  within 45 days after
          the end of each of the first three quarters of each fiscal year of the
          Borrower,   Consolidated  balance  sheets  of  the  Borrower  and  its
          Subsidiaries as of the end of such quarter and Consolidated statements
          of income and cash flows of the Borrower and its  Subsidiaries for the
          period  commencing  at the end of the previous  fiscal year and ending
          with the end of such  quarter,  duly  certified  (subject  to year-end
          audit  adjustments) by the chief financial  officer of the Borrower as
          having been  prepared  in  accordance  with GAAP and setting  forth in
          reasonable detail the calculations necessary to demonstrate compliance
          with subsections (g), (h) and (i) of this Section 4.01;

               (ii) as soon as  available  and in any event within 90 days after
          the end of each  fiscal  year of the  Borrower,  a copy of the  annual
          report for such year for the Borrower and its Subsidiaries, containing
          Consolidated balance sheets of the Borrower and its Subsidiaries as of
          the end of such fiscal year and Consolidated  statements of income and
          cash flows of the Borrower and its  Subsidiaries for such fiscal year,
          in each case  accompanied  by an opinion  acceptable to the Lenders by
          KPMG Peat Marwick or other independent public  accountants  reasonably
          acceptable to the Lenders and setting  forth in reasonable  detail the
          calculations necessary to demonstrate compliance with subsections (g),
          (h) and (i) of this Section 4.01;

               (iii) as soon as possible  and in any event within ten days after
          the  occurrence  of  each  Default  continuing  on the  date  of  such
          statement,  a statement of the chief financial officer of the Borrower
          setting forth details of such Default and the action that the Borrower
          has taken and proposes to take with respect thereto;

               (iv) promptly after the sending or filing thereof,  copies of all
          reports which the Borrower  sends to any of its  securityholders,  and
          copies of all reports and  registration  statements which the Borrower
          or any of its  Subsidiaries  files with the  Securities  and  Exchange
          Commission or any national securities exchange;

               (v) promptly after the filing or receiving thereof, copies of all
          reports and notices which the Borrower or any  Subsidiary  files under
          ERISA  with  the  Internal  Revenue  Service  or the  Pension  Benefit
          Guaranty  Corporation  or the U.S.  Department  of Labor or which  the
          Borrower or any Subsidiary  receives from the Pension Benefit Guaranty
          Corporation;

               (vi)  promptly  after  the  commencement  thereof,  notice of all
          actions  and  proceedings  before  any court,  governmental  agency or
          arbitrator  affecting the Borrower or any of its  Subsidiaries  of the
          type described in Section 4.01(f); and


<PAGE>   11

               (vii) such other  information  respecting  the Borrower or any of
          its Subsidiaries as any Lender through the Agent may from time to time
          reasonably request.

          (g) Working Capital. Maintain an excess of Consolidated current assets
     over Consolidated  current liabilities of the Borrower and its Subsidiaries
     of not less than $50,000,000 and a ratio of Consolidated  current assets to
     Consolidated  current  liabilities of the Borrower and its  Subsidiaries of
     not less than 1.25 to 1. Consolidated current liabilities shall include the
     current portion of the Debt resulting from the Notes.

          (h) Net Worth.  Maintain an excess of  Consolidated  total assets over
     Consolidated  total liabilities of the Borrower and its Subsidiaries of not
     less than $400,000,000.

          (i) Interest  Coverage Ratio.  Maintain an Interest  Coverage Ratio of
     not less than 4.0 to 1.

     SECTION 5.02. Negative Covenants.  On and after October 1, 1998 and so long
as any  Advance  shall  remain  unpaid or any Lender  shall have any  Commitment
hereunder,  the Borrower will not, unless the Lenders shall otherwise consent in
writing:

          (a)  Liens,  Etc.  Create or suffer  to  exist,  or permit  any of its
     Subsidiaries to create or suffer to exist, any lien,  security  interest or
     other charge or encumbrance, or any other type of preferential arrangement,
     upon or  with  respect  to any of its  properties,  whether  now  owned  or
     hereafter acquired, or assign, or permit any of its Subsidiaries to assign,
     any right to receive income, in each case to secure any Debt of any Person,
     other than:

               (i) purchase  money liens or purchase  money  security  interests
          upon  or in any  property  acquired  or held  by the  Borrower  or any
          Subsidiary  in the ordinary  course of business to secure the purchase
          price of such property or to secure  indebtedness  incurred solely for
          the purpose of financing the acquisition of such property;

               (ii) liens or security interests existing on such property at the
          time of its acquisition (other than any such lien or security interest
          created in contemplation of such acquisition);

               (iii) liens for taxes,  assessments and  governmental  charges or
          levies to the extent not  required  to be paid under  Section  5.01(b)
          hereof;

               (iv) liens  imposed by law,  such as  materialmen's,  mechanics',
          carriers',  workmen's  and  repairmen's  liens and other similar liens
          arising in the ordinary course of business  securing  obligations that
          are not overdue for a period of more than 30 days;

               (v)  pledges or  deposits to secure  obligations  under  workers'
          compensation  laws or  similar  legislation  or to  secure  public  or
          statutory obligations;

               (vi) easements,  rights of way and other encumbrances on title to
          real  property  that do not render  title to the  property  encumbered
          thereby  unmarketable or materially  adversely  affect the use of such
          property for its present purposes; and

               (vii) liens  incurred or deposits made in the ordinary  course of
          business  to secure  the  performance  of  letters  of  credit,  bids,
          tenders, sales contracts, leases, surety, appeal and performance bonds
          and other  similar  obligations  not incurred in  connection  with the
          borrowing of money;

     provided  that  the  aggregate   principal   amount  of  the  Debt,   other
     indebtedness, taxes, assessments,  governmental charges or levies and other
     obligations  secured  by the liens or  security  interests  referred  to in
     clauses  (i)  through  (vii)  of this  Section  5.02(a)  shall  not  exceed
     $45,000,000 in the aggregate at any time outstanding.

          (b)  Accounting  Changes.  Make  or  permit,  or  permit  any  of  its
     Subsidiaries  to make or  permit,  any  change in  accounting  policies  or
     reporting  practices,  except as allowed by generally  accepted  accounting
     principles.


                                   ARTICLE VI
                                EVENTS OF DEFAULT

     SECTION 6.01. Events of Default. If any of the following events ("Events of
Default") shall occur and be continuing:

          (a) the  Borrower  shall fail to pay (i) any  principal of any Advance
     when the same  becomes due and payable or (ii) any  interest on any Advance
     or any other  amount  payable  under this  Agreement or any Note within ten
     days from the date the same becomes due and payable; or


<PAGE>   12

         (b) any  representation  or warranty made by the Borrower herein or by
     the Borrower (or any of its  officers) in  connection  with this  Agreement
     shall prove to have been incorrect in any material respect when made; or

          (c) (i) the  Borrower  shall  fail to  perform  or  observe  any term,
     covenant or  agreement  contained  in  subsection  (c),  (g), (h) or (i) of
     Section 5.01 or in Section 5.02 or (ii) the Borrower  shall fail to perform
     or  observe  any  other  term,  covenant  or  agreement  contained  in this
     Agreement  or any  Note on its part to be  performed  or  observed  if such
     failure shall remain  unremedied  for 30 days after written  notice thereof
     shall have been given to the Borrower by the Agent or any Lender; or

          (d) the  Borrower  or any of its  Subsidiaries  shall  fail to pay any
     principal  of or premium or interest on any Debt that is  outstanding  in a
     principal  amount of at least  $5,000,000 in the aggregate  (but  excluding
     Debt outstanding hereunder) of the Borrower or such Subsidiary (as the case
     may be),  when the same  becomes  due and  payable  (whether  by  scheduled
     maturity, required prepayment, acceleration, demand or otherwise), and such
     failure shall continue after the applicable grace period, if any, specified
     in the  agreement or  instrument  relating to such Debt; or any other event
     shall occur or  condition  shall exist under any  agreement  or  instrument
     relating to any such Debt and shall  continue  after the  applicable  grace
     period, if any, specified in such agreement or instrument, if the effect of
     such event or condition is to accelerate, or to permit the acceleration of,
     the maturity of such Debt; or any such Debt shall be declared to be due and
     payable,  or  required to be prepaid  (other than by a regularly  scheduled
     required  prepayment),  redeemed,  purchased  or  defeased,  or an offer to
     prepay, redeem, purchase or defease such Debt shall be required to be made,
     in each case prior to the stated maturity thereof; or

          (e) the Borrower or any of its  Subsidiaries  shall  generally not pay
     its debts as such debts become due, or shall admit in writing its inability
     to pay its debts  generally,  or shall  make a general  assignment  for the
     benefit of creditors;  or any proceeding  shall be instituted by or against
     the Borrower or any of its Subsidiaries seeking to adjudicate it a bankrupt
     or  insolvent,   or  seeking  liquidation,   winding  up,   reorganization,
     arrangement,  adjustment,  protection,  relief, or composition of it or its
     debts under any law relating to bankruptcy, insolvency or reorganization or
     relief of  debtors,  or  seeking  the  entry of an order for  relief or the
     appointment of a receiver, trustee, custodian or other similar official for
     it or for any substantial part of its property and, in the case of any such
     proceeding  instituted  against it (but not instituted by it),  either such
     proceeding shall remain undismissed or unstayed for a period of 60 days, or
     any  of  the  actions  sought  in  such  proceeding   (including,   without
     limitation, the entry of an order for relief against, or the appointment of
     a receiver, trustee, custodian or other similar official for, it or for any
     substantial  part of its property)  shall occur;  or the Borrower or any of
     its  Subsidiaries  shall take any corporate  action to authorize any of the
     actions set forth above in this Section 6.01(e); or

          (f) any  judgment  or order  for the  payment  of money in  excess  of
     $5,000,000   shall  be  rendered   against  the  Borrower  or  any  of  its
     Subsidiaries  and  either  (i)  enforcement  proceedings  shall  have  been
     commenced by any creditor  upon such  judgment or order or (ii) there shall
     be any period of 30 consecutive  days during which a stay of enforcement of
     such judgment or order,  by reason of a pending appeal or otherwise,  shall
     not be in effect;

then, and in any such event, the Agent (i) shall at the request, or may with the
consent,  of the Lenders,  by notice to the Borrower,  declare the obligation of
each  Lender  to make  Advances  to be  terminated,  whereupon  the  same  shall
forthwith terminate,  and (ii) shall at the request, or may with the consent, of
the Lenders, by notice to the Borrower,  declare the Notes, all interest thereon
and all other  amounts  payable  under this  Agreement to be  forthwith  due and
payable,  whereupon  the Notes,  all such  interest and all such  amounts  shall
become and be forthwith due and payable, without presentment, demand, protest or
further  notice of any kind,  all of which are  hereby  expressly  waived by the
Borrower;  provided,  however, that in the event of an actual or deemed entry of
an order for relief with  respect to the Borrower  under the Federal  Bankruptcy
Code, (A) the obligation of each Lender to make Advances shall  automatically be
terminated  and (B) the Notes,  all such  interest  and all such  amounts  shall
automatically  become  and be due  and  payable,  without  presentment,  demand,
protest or any notice of any kind, all of which are hereby  expressly  waived by
the Borrower.


                                   ARTICLE VII
                                    THE AGENT

     SECTION 7.01.  Authorization  and Action.  Each Lender hereby  appoints and
authorizes  the Agent to take such action as agent on its behalf and to exercise
such powers and discretion under this Agreement as are delegated to the Agent by
the terms  hereof,  together with such powers and  discretion as are  reasonably
incidental  thereto.  As to any  matters  not  expressly  provided  for by  this
Agreement  (including,  without  limitation,  enforcement  or  collection of the
Notes),  the Agent shall not be required to exercise any  discretion or take any
action,  but shall be  required  to act or to refrain  from acting (and shall be
fully protected in so acting or refraining from acting) upon the instructions of
the  Lenders,  and such  instructions  shall be binding upon all Lenders and all

<PAGE>   13

holders of Notes;  provided,  however,  that the Agent  shall not be required to
take any action that exposes the Agent to personal liability or that is contrary
to this  Agreement  or  applicable  law. The Agent agrees to give to each Lender
prompt  notice of each notice given to it by the Borrower  pursuant to the terms
of this Agreement.

     SECTION  7.02.  Agent's  Reliance,  Etc.  Neither  the Agent nor any of its
directors, officers, agents or employees shall be liable for any action taken or
omitted to be taken by it or them under or in  connection  with this  Agreement,
except  for its or their own gross  negligence  or willful  misconduct.  Without
limitation of the  generality  of the  foregoing,  the Agent:  (a) may treat the
payee of any Note as the holder  thereof until the Agent receives and accepts an
Assignment and  Acceptance  entered into by the Lender that is the payee of such
Note, as assignor, and an Eligible Assignee, as assignee, as provided in Section
8.07; (b) may consult with legal counsel  (including  counsel for the Borrower),
independent public accountants and other experts selected by it and shall not be
liable  for any  action  taken or  omitted  to be  taken in good  faith by it in
accordance with the advice of such counsel, accountants or experts; (c) makes no
warranty or  representation  to any Lender and shall not be  responsible  to any
Lender for any statements,  warranties or  representations  (whether  written or
oral) made in or in connection with this Agreement;  (d) shall not have any duty
to ascertain or to inquire as to the  performance  or  observance  of any of the
terms,  covenants or conditions of this Agreement on the part of the Borrower or
to inspect the property  (including the books and records) of the Borrower;  (e)
shall  not be  responsible  to any  Lender  for  the  due  execution,  legality,
validity,  enforceability,   genuineness,   sufficiency  or  value  of,  or  the
perfection or priority of any lien or security  interest created or purported to
be created under or in connection  with, this Agreement or any other  instrument
or document furnished pursuant hereto; and (f) shall incur no liability under or
in respect of this Agreement by acting upon any notice, consent,  certificate or
other  instrument  or writing  (which may be by  telecopier,  telegram or telex)
believed by it to be genuine and signed or sent by the proper party or parties.

     SECTION 7.03. VEBA. With respect to its Commitment,  the Advance made by it
and the Note issued to it, VEBA shall have the same rights and powers under this
Agreement  as any other  Lender and may  exercise the same as though it were not
the Agent; and the term "Lender" or "Lenders" shall,  unless otherwise expressly
indicated, include VEBA in its individual capacity.

     SECTION 7.04. Lender Credit Decision. Each Lender acknowledges that it has,
independently  and without reliance upon the Agent or any other Lender and based
on the financial statements referred to in Section 4.01 and such other documents
and information as it has deemed  appropriate,  made its own credit analysis and
decision to enter into this  Agreement.  Each Lender also  acknowledges  that it
will,  independently and without reliance upon the Agent or any other Lender and
based on such  documents and  information  as it shall deem  appropriate  at the
time,  continue to make its own credit  decisions in taking or not taking action
under this Agreement.

     SECTION 7.05. Indemnification. The Lenders agree to indemnify the Agent (to
the extent not reimbursed by the Borrower),  ratably according to the respective
principal  amounts of the Notes then held by each of them (or if no Notes are at
the time  outstanding  or if any Notes are held by Persons that are not Lenders,
ratably  according to the  respective  amounts of their  Commitments),  from and
against  any and  all  liabilities,  obligations,  losses,  damages,  penalties,
actions,  judgments,  suits,  costs,  expenses or  disbursements  of any kind or
nature  whatsoever that may be imposed on, incurred by, or asserted  against the
Agent in any way  relating  to or arising  out of this  Agreement  or any action
taken or omitted  by the Agent  under this  Agreement,  provided  that no Lender
shall be  liable  for any  portion  of such  liabilities,  obligations,  losses,
damages, penalties,  actions, judgments, suits, costs, expenses or disbursements
resulting  from the Agent's  gross  negligence  or willful  misconduct.  Without
limitation of the foregoing,  each Lender agrees to reimburse the Agent promptly
upon  demand for its  ratable  share of any  out-of-pocket  expenses  (including
counsel  fees)  incurred  by the  Agent  in  connection  with  the  preparation,
execution,  delivery,  administration,  modification,  amendment or  enforcement
(whether  through  negotiations,  legal  proceedings  or otherwise) of, or legal
advice in respect of rights or  responsibilities  under, this Agreement,  to the
extent that the Agent is not reimbursed for such expenses by the Borrower.

     SECTION 7.06.  Successor  Agent. The Agent may resign at any time by giving
written notice thereof to the Lenders and the Borrower and may be removed at any
time with or without cause by the all of the Lenders.  Upon any such resignation
or removal, the Lenders shall have the right to appoint a successor Agent. If no
successor  Agent shall have been so  appointed  by the  Lenders,  and shall have
accepted such  appointment,  within 30 days after the retiring Agent's giving of
notice of resignation or the Lenders'  removal of the retiring  Agent,  then the
retiring Agent may, on behalf of the Lenders,  appoint a successor Agent,  which
shall be a commercial  bank organized  under the laws of the United States or of
any state thereof and having a long-term  senior unsecured debt rating by S&P of
"A" or better.  Upon the acceptance of any  appointment as Agent  hereunder by a
successor  Agent,  such successor  Agent shall  thereupon  succeed to and become
vested with all the rights,  powers,  discretion,  privileges  and duties of the
retiring  Agent,  and the retiring Agent shall be discharged from its duties and
obligations  under this  Agreement.  After any retiring  Agent's  resignation or
removal  hereunder as Agent,  the  provisions of this Article VII shall inure to
its  benefit as to any  actions  taken or omitted to be taken by it while it was
Agent under this Agreement.



<PAGE>   14

                                  ARTICLE VIII
                                  MISCELLANEOUS

     SECTION 8.01.  Amendments,  Etc. No amendment or waiver of any provision of
this  Agreement  or the Notes,  nor  consent to any  departure  by the  Borrower
therefrom,  shall in any event be effective  unless the same shall be in writing
and signed by the  Required  Lenders,  and then such waiver or consent  shall be
effective only in the specific  instance and for the specific  purpose for which
given; provided,  however, that no amendment, waiver or consent shall, unless in
writing and signed by all the Lenders, do any of the following: (a) waive any of
the conditions  specified in Section 3.01,  (b) increase the  Commitments of the
Lenders or subject the  Lenders to any  additional  obligations,  (c) reduce the
principal  of, or interest  on, the Notes or any fees or other  amounts  payable
hereunder,  (d)  postpone  any date fixed for any  payment of  principal  of, or
interest  on,  the Notes or any fees or other  amounts  payable  hereunder,  (e)
change the percentage of the  Commitments or of the aggregate  unpaid  principal
amount of the Notes,  or the number of Lenders,  that shall be required  for the
Lenders or any of them to take any action  hereunder  or (f) amend this  Section
8.01; and provided further that no amendment, waiver or consent shall, unless in
writing and signed by the Agent in addition  to the  Lenders  required  above to
take such action,  affect the rights or duties of the Agent under this Agreement
or any Note.

     SECTION 8.02. Notices,  Etc. All notices and other communications  provided
for hereunder shall be in writing  (including  telecopier,  telegraphic or telex
communication) and mailed, telecopied,  telegraphed, telexed or delivered, if to
the Borrower,  at its address at 501 Pearl Drive,  St. Peters,  Missouri  63376,
Attention:  Treasurer  (telecopier  number  (314)  279-5163);  if to the Initial
Lender  or  the  Agent,  at  Bennigsenplatz  1,  D-40474,  Dusseldorf,  Germany;
Attention: Treasury (telecopier number +49-211-4579-669); if to any other Lender
or any Bank, at its Eurodollar  Lending  Office  specified in the Assignment and
Acceptance  pursuant to which it became a Lender;  or, as to any party,  at such
other address as shall be  designated  by such party in a written  notice to the
other  parties.  All  such  notices  and  communications   shall,  when  mailed,
telecopied,  telegraphed or telexed,  be effective when received by the party to
whom such notice is addressed,  except that notices and communications  pursuant
to Section 2.08 shall not be effective  until  confirmed in writing by the party
to whom  such  notice  is  addressed.  Delivery  by  telecopier  of an  executed
counterpart of any amendment or waiver of any provision of this Agreement or the
Notes or of any Exhibit hereto to be executed and delivered  hereunder  shall be
effective as delivery of a manually executed counterpart thereof.

     SECTION 8.03. No Waiver;  Remedies. No failure on the part of any Lender or
the Agent to exercise, and no delay in exercising,  any right hereunder or under
any Note  shall  operate  as a waiver  thereof;  nor shall any single or partial
exercise of any such right preclude any other or further exercise thereof or the
exercise of any other right. The remedies herein provided are cumulative and not
exclusive of any remedies provided by law.

     SECTION 8.04. Costs and Expenses.  (a) The Borrower agrees to pay on demand
all  reasonable  costs  and  expenses  of  the  Agent  in  connection  with  the
preparation,  execution, delivery, modification and amendment of this Agreement,
the Notes and the other documents to be delivered hereunder,  including, without
limitation,  the  reasonable  fees and  expenses  of counsel  for the Agent with
respect  thereto  and with  respect to  advising  the Agent as to its rights and
responsibilities  under this  Agreement.  The Borrower  further agrees to pay on
demand all costs and expenses of the Agent and the Lenders,  if any  (including,
without  limitation,  reasonable counsel fees and expenses),  in connection with
the enforcement (whether through  negotiations,  legal proceedings or otherwise)
of this Agreement,  the Notes and the other documents to be delivered hereunder,
including,  without limitation,  reasonable fees and expenses of counsel for the
Agent and each Lender in connection  with the  enforcement  of rights under this
Section 8.04(a).

     (b) The Borrower  agrees to indemnify  and hold harmless the Agent and each
Lender and each of their  Affiliates and their officers,  directors,  employees,
agents and advisors (each, an "Indemnified  Party") from and against any and all
claims,   damages,   losses,   liabilities  and  expenses  (including,   without
limitation,  reasonable fees and expenses of counsel) that may be incurred by or
asserted or awarded against any  Indemnified  Party, in each case arising out of
or in connection with or by reason of, or in connection with the preparation for
a defense  of, any  investigation,  litigation  or  proceeding  arising  out of,
related  to or in  connection  with  the  Notes,  this  Agreement,  any  of  the
transactions  contemplated  herein or the actual or proposed use of the proceeds
of the Advances, whether or not such investigation,  litigation or proceeding is
brought  by  the  Borrower,  its  directors,  shareholders  or  creditors  or an
Indemnified  Party or any other Person or any  Indemnified  Party is otherwise a
party  thereto  and  whether  or not the  transactions  contemplated  hereby are
consummated, except to the extent such claim, damage, loss, liability or expense
is found in a final, nonappealable judgment by a court of competent jurisdiction
to have  resulted  from such  Indemnified  Party's  gross  negligence or willful
misconduct.  The Borrower also agrees not to assert any claim against the Agent,
any  Lender,  any of their  Affiliates,  or any of their  respective  directors,
officers,  employees,  attorneys  and agents,  on any theory of  liability,  for
special, indirect, consequential or punitive damages arising out of or otherwise
relating to the Notes,  this  Agreement,  any of the  transactions  contemplated
herein or the actual or proposed use of the proceeds of the Advances.


<PAGE>   15

     (c) If any payment of  principal  of any Advance is made by the Borrower to
or for the account of a Lender other than on the last day of the Interest Period
for  such  Advance,  as a result  of a  payment  pursuant  to  Section  2.08(b),
acceleration  of the  maturity of the Notes  pursuant to Section 6.01 or for any
other  reason,  the Borrower  shall,  upon demand by such Lender (with a copy of
such demand to the  Agent),  pay to the Agent for the account of such Lender any
amounts required to compensate such Lender for any additional  losses,  costs or
expenses  that it may  reasonably  incur as a result of such payment  including,
without limitation,  any loss (including loss of anticipated  profits),  cost or
expense  incurred by reason of the  liquidation or  reemployment  of deposits or
other funds acquired by any Lender to fund or maintain such Advance.

     (d)  Without  prejudice  to the  survival  of any  other  agreement  of the
Borrower hereunder,  the agreements and obligations of the Borrower contained in
Sections  2.09,  2.12 and 8.04 shall  survive the payment in full of  principal,
interest and all other amounts payable hereunder and under the Notes.

     SECTION  8.05.  Right of  Setoff.  Upon (a) the  occurrence  and during the
continuance  of any Event of Default  and (b) the  making of the  request or the
granting of the consent  specified  by Section  6.01 to  authorize  the Agent to
declare the Notes due and payable  pursuant to the  provisions  of Section 6.01,
each Lender and each of its Affiliates is hereby authorized at any time and from
time to time, to the fullest  extent  permitted by law, to set off and apply any
and all deposits (general or special,  time or demand,  provisional or final) at
any time held and other  indebtedness  at any time owing by such  Lender or such
Affiliate  to or for the credit or the account of the  Borrower  against any and
all of the  obligations  of the Borrower now or  hereafter  existing  under this
Agreement  and the Note held by such  Lender,  whether or not such Lender  shall
have  made any  demand  under  this  Agreement  or such Note and  although  such
obligations may be unmatured. Each Lender agrees promptly to notify the Borrower
after any such setoff and  application,  provided  that the failure to give such
notice shall not affect the validity of such setoff and application.  The rights
of each Lender and its  Affiliates  under this  Section  8.05 are in addition to
other  rights and  remedies  (including,  without  limitation,  other  rights of
setoff) that such Lender and its Affiliates may have.

     SECTION 8.06. Binding Effect.  This Agreement shall become effective (other
than Section 2.01,  which shall only become  effective upon  satisfaction of the
conditions precedent set forth in Section 3.01) when it shall have been executed
by the  Borrower,  the Agent and the  Initial  Lender  and  thereafter  shall be
binding upon and inure to the benefit of the Borrower, the Agent and the Initial
Lender and their  respective  successors  and assigns,  except that the Borrower
shall not have the right to assign its rights  hereunder or any interest  herein
without the prior written consent of the Lenders.

     SECTION 8.07. Assignments and Participations. (a) Each Lender may assign to
one or more  Persons all or a portion of its rights and  obligations  under this
Agreement  (including,  without limitation,  all or a portion of its Commitment,
the Advance  owing to it and the Note or Notes held by it);  provided,  however,
that  (i)  each  such  assignment  shall be of a  constant,  and not a  varying,
percentage of all rights and obligations  under this  Agreement,  (ii) except in
the  case  of  an  assignment  to a  Person  that,  immediately  prior  to  such
assignment,  was a Lender  or an  assignment  of all of a  Lender's  rights  and
obligations under this Agreement,  the amount of the Commitment of the assigning
Lender being  assigned  pursuant to each such  assignment  (determined as of the
date of the Assignment and Acceptance with respect to such assignment)  shall in
no event be less than $5,000,000 or an integral multiple of $1,000,000 in excess
thereof,  (iii) each such assignment shall be to an Eligible Assignee,  and (iv)
the parties to each such assignment  shall execute and deliver to the Agent, for
its  acceptance  and recording in the Register,  an Assignment  and  Acceptance,
together  with  any  Note  subject  to such  assignment.  Upon  such  execution,
delivery,  acceptance and recording, from and after the effective date specified
in each Assignment and Acceptance,  (A) the assignee thereunder shall be a party
hereto  and,  to the extent  that  rights and  obligations  hereunder  have been
assigned to it pursuant to such Assignment and  Acceptance,  have the rights and
obligations of a Lender hereunder and (B) the Lender assignor  thereunder shall,
to the extent that rights and  obligations  hereunder  have been  assigned by it
pursuant  to such  Assignment  and  Acceptance,  relinquish  its  rights  and be
released  from its  obligations  under this  Agreement  (and,  in the case of an
Assignment and Acceptance  covering all or the remaining portion of an assigning
Lender's rights and obligations under this Agreement, such Lender shall cease to
be a party hereto).

     (b) By executing and  delivering an Assignment and  Acceptance,  the Lender
assignor  thereunder and the assignee  thereunder confirm to and agree with each
other and the other  parties  hereto as  follows:  (i) other than as provided in
such Assignment and Acceptance, such assigning Lender makes no representation or
warranty  and  assumes  no  responsibility   with  respect  to  any  statements,
warranties or  representations  made in or in connection  with this Agreement or
the execution, legality, validity, enforceability,  genuineness,  sufficiency or
value of this Agreement or any other instrument or document  furnished  pursuant
hereto;  (ii) such  assigning  Lender  makes no  representation  or warranty and
assumes  no  responsibility  with  respect  to the  financial  condition  of the
Borrower  or  the  performance  or  observance  by  the  Borrower  of any of its
obligations  under this Agreement or any other instrument or document  furnished
pursuant  hereto;  (iii) such  assignee  confirms that it has received a copy of
this Agreement,  together with copies of the financial statements referred to in
Section  4.01  and  such  other  documents  and  information  as it  has  deemed
appropriate  to make its own credit  analysis  and  decision  to enter into such

<PAGE>   16

Assignment and Acceptance;  (iv) such assignee will,  independently  and without
reliance upon the Agent,  such assigning Lender or any other Lender and based on
such  documents  and  information  as it shall  deem  appropriate  at the  time,
continue to make its own credit  decisions in taking or not taking  action under
this Agreement; (v) such assignee confirms that it is an Eligible Assignee; (vi)
such assignee  appoints and authorizes the Agent to take such action as agent on
its behalf and to exercise such powers and  discretion  under this  Agreement as
are  delegated to the Agent by the terms  hereof,  together with such powers and
discretion as are reasonably  incidental thereto; and (vii) such assignee agrees
that it will perform in accordance with their terms all of the obligations  that
by the terms of this Agreement are required to be performed by it as a Lender.

     (c) The Agent shall  maintain at its address  referred to in Section 8.02 a
copy of each  Assignment  and  Acceptance  delivered to and accepted by it and a
register for the  recordation  of the names and addresses of the Lenders and the
Commitment  of, and principal  amount of the Advances owing to, each Lender from
time to time (the  "Register").  The entries in the Register shall be conclusive
and binding for all purposes, absent manifest error, and the Borrower, the Agent
and the Lenders may treat each Person  whose name is recorded in the Register as
a Lender  hereunder for all purposes of this  Agreement.  The Register  shall be
available for  inspection by the Borrower or any Lender at any  reasonable  time
and from time to time upon reasonable prior notice.

     (d) Upon  its  receipt  of an  Assignment  and  Acceptance  executed  by an
assigning Lender and an assignee  representing that it is an Eligible  Assignee,
together with any Note or Notes subject to such assignment,  the Agent shall, if
such  Assignment and Acceptance has been completed and is in  substantially  the
form of Exhibit C hereto, (i) accept such Assignment and Acceptance, (ii) record
the information  contained  therein in the Register and (iii) give prompt notice
thereof to the  Borrower.  Within five  Business  Days after its receipt of such
notice, the Borrower, at its own expense, shall execute and deliver to the Agent
in exchange for the  surrendered  Note a new Note to the order of such  Eligible
Assignee  in an amount  equal to the  Commitment  assumed by it pursuant to such
Assignment and Acceptance and, if the assigning Lender has retained a Commitment
hereunder, a new Note to the order of the assigning Lender in an amount equal to
the Commitment  retained by it hereunder.  Such new Note or Notes shall be in an
aggregate  principal  amount  equal to the  aggregate  principal  amount of such
surrendered Note or Notes,  shall be dated the effective date of such Assignment
and Acceptance  and shall  otherwise be in  substantially  the form of Exhibit A
hereto.

     (e) Each  Lender  may  sell  participations  to one or more  banks or other
entities  (other than the Borrower or any of its  Affiliates)  in or to all or a
portion of its rights and obligations under this Agreement  (including,  without
limitation, all or a portion of its Commitment, the Advances owing to it and the
Note or Notes held by it); provided, however, that (i) such Lender's obligations
under this  Agreement  (including,  without  limitation,  its  Commitment to the
Borrower hereunder) shall remain unchanged, (ii) such Lender shall remain solely
responsible to the other parties hereto for the performance of such obligations,
(iii) such Lender  shall  remain the holder of any such Note for all purposes of
this  Agreement,  (iv) the  Borrower,  the  Agent and the  other  Lenders  shall
continue to deal solely and directly  with such Lender in  connection  with such
Lender's  rights and  obligations  under this  Agreement and (v) no  participant
under any such  participation  shall have any right to approve any  amendment or
waiver of any  provision of this  Agreement  or any Note,  or any consent to any
departure by the Borrower  therefrom,  except to the extent that such amendment,
waiver or consent  would reduce the  principal  of, or interest on, the Notes or
any fees or other amounts payable hereunder,  in each case to the extent subject
to such  participation,  or postpone any date fixed for any payment of principal
of, or interest on, the Notes or any fees or other amounts payable hereunder, in
each case to the extent subject to such participation.

     (f) Any Lender may, in connection with any assignment or  participation  or
proposed assignment or participation  pursuant to this Section 8.07, disclose to
the assignee or participant or proposed assignee or participant, any information
relating  to the  Borrower  furnished  to such  Lender  by or on  behalf  of the
Borrower;  provided  that,  prior  to  any  such  disclosure,  the  assignee  or
participant  or proposed  assignee or  participant  shall agree to preserve  the
confidentiality  of  any  Confidential  Information  relating  to  the  Borrower
received by it from such Lender.

     (g)  Notwithstanding  any other provision set forth in this Agreement,  any
Lender may at any time  create a security  interest in all or any portion of its
rights under this Agreement (including,  without limitation,  the Advances owing
to it and  the  Note  held  by it) in  favor  of any  Federal  Reserve  Bank  in
accordance  with  Regulation A of the Board of Governors of the Federal  Reserve
System.

     (h)  In  connection  with  the  initial   assignment  or  proposed  initial
assignment by the Initial  Lender  pursuant to this Section  8.07,  the Borrower
shall,  upon the request of the Initial Lender,  furnish to the Initial Lender a
favorable opinion of counsel for the Borrower  acceptable to the Initial Lender,
in form and substance reasonably satisfactory to the Initial Lender.

     SECTION  8.08.  Confidentiality.  Neither  the Agent nor any  Lender  shall
disclose any  Confidential  Information to any Person without the consent of the
Borrower,  other than (a) to the Agent's or such Lender's  Affiliates  and their
officers, directors, employees, agents and advisors and to actual or prospective
assignees and  participants,  and then, in each case, only on a confidential and

<PAGE>   17

need-to-know  basis,  (b) as required by any law, rule or regulation or judicial
process  and (c) as  requested  or  required  by any  state,  federal or foreign
authority or examiner regulating banks or banking.

     SECTION 8.09. Governing Law. This Agreement and the Notes shall be governed
by, and construed in accordance with, the laws of the State of New York.

     SECTION 8.10. Execution in Counterparts.  This Agreement may be executed in
any  number  of  counterparts  and  by  different  parties  hereto  in  separate
counterparts,  each of which when so executed  shall be deemed to be an original
and all of which taken  together shall  constitute  one and the same  agreement.
Delivery of an executed  counterpart  of a signature  page to this  Agreement by
telecopier shall be effective as delivery of a manually executed  counterpart of
this Agreement.

     SECTION  8.11.  Jurisdiction,  Etc. (a) Each of the parties  hereto  hereby
irrevocably and  unconditionally  submits,  for itself and its property,  to the
nonexclusive  jurisdiction  of any New York State court or federal  court of the
United States of America  sitting in New York City, and any appellate court from
any  thereof,  in any action or  proceeding  arising  out of or relating to this
Agreement or the Notes, or for  recognition or enforcement of any judgment,  and
each of the parties hereto hereby  irrevocably and  unconditionally  agrees that
all  claims  in  respect  of any such  action  or  proceeding  may be heard  and
determined in any such New York State court or, to the extent  permitted by law,
in such federal  court.  Each of the parties hereto agrees that a final judgment
in any such  action or  proceeding  shall be  conclusive  and may be enforced in
other  jurisdictions  by suit on the judgment or in any other manner provided by
law.  Nothing  in this  Agreement  shall  affect  any  right  that any party may
otherwise  have to bring any action or proceeding  relating to this Agreement or
the Notes in the courts of any jurisdiction.

     (b) Each of the parties hereto irrevocably and  unconditionally  waives, to
the fullest  extent it may legally and  effectively do so, any objection that it
may now or  hereafter  have to the  laying  of  venue  of any  suit,  action  or
proceeding  arising out of or relating to this Agreement or the Notes in any New
York State or federal  court.  Each of the  parties  hereto  hereby  irrevocably
waives,  to the fullest extent  permitted by law, the defense of an inconvenient
forum to the maintenance of such action or proceeding in any such court.

     IN WITNESS  WHEREOF,  the parties  hereto have caused this  Agreement to be
executed by their duly  authorized  representatives  effective as of the day and
year first above written.


MEMC ELECTRONIC MATERIALS, INC., as Borrower


By: /s/ Kenneth L. Young
    ________________________________________
    Name:   Kenneth L. Young
    Title:  Treasurer


VEBA AG, as Agent


By: /s/ Morton E. Grosz
    ________________________________________
    Name:  Morton E. Grosz
    Title: Attorney-in-Fact
           pursuant to Power of Attorney
           dated September 21, 1998


VEBA AG, as Initial Lender


By: /s/ Morton E. Grosz
    ________________________________________
    Name:   Morton E. Grosz
    Title:  Attorney-in-Fact
            pursuant to Power of Attorney
            dated September 21, 1998

<PAGE>   18
                                                                EXHIBIT A TO THE
                                                      REVOLVING CREDIT AGREEMENT


                             FORM OF PROMISSORY NOTE


U. S. $____________________                    Dated: __________________, ______

     FOR VALUE RECEIVED,  the undersigned,  MEMC ELECTRONIC  MATERIALS,  INC., a
Delaware  corporation (the  "Borrower"),  HEREBY PROMISES TO PAY to the order of
[NAME OF LENDER],  a [JURISDICTION OF INCORPORATION ] corporation (the "Lender")
for its  account on the  Termination  Date (as  defined in the Credit  Agreement
referred to below) the principal SUM Of U.S.$[AMOUNT OF THE LENDER'S  COMMITMENT
IN FIGURES] or, if less, the principal amount of the Advances made by the Lender
to the Borrower pursuant to the Revolving Credit Agreement dated as of September
23, 1998 between the Borrower and VEBA,  as the Lender and as Agent (as amended,
supplemented  or otherwise  modified from time to time, the "Credit  Agreement";
the terms defined therein being used herein as therein  defined)  outstanding on
the Termination Date.

     The Borrower promises to pay interest on the unpaid principal amount of the
Advances from the date of the Advances  until such  principal  amount is paid in
full, at such interest rates, and payable at such times, as are specified in the
Credit Agreement.

     Both  principal  and  interest  are  payable in lawful  money of the United
States of America to VEBA, as Agent, at the Agent's Account,  in same day funds.
The  Advances  owing  to the  Lender  by the  Borrower  pursuant  to the  Credit
Agreement,  and all  payments  made on account of  principal  thereof,  shall be
recorded by the Lender and, prior to any transfer  hereof,  endorsed on the grid
attached hereto which is part of this Promissory Note.

     This Promissory Note is one of the Notes referred to in, and is entitled to
the benefits of, the Credit Agreement. The Credit Agreement, among other things,
(i) provides for the making of Advances by the Lender to the Borrower  from time
to time in an aggregate  amount not to exceed at any time outstanding the Dollar
amount first above mentioned,  the  indebtedness of the Borrower  resulting from
the  Advances  being  evidenced  by this  Promissory  Note,  and  (ii)  contains
provisions for acceleration of the maturity hereof upon the happening of certain
stated events and also for  prepayments on account of principal  hereof prior to
the maturity hereof upon the terms and conditions therein specified.


                                               MEMC ELECTRONIC MATERIALS, INC.


                                               By:_____________________________
                                               Title:

<PAGE>   19
                       ADVANCES AND PAYMENTS OF PRINCIPAL

<TABLE>
<CAPTION>
<S>                      <C>                    <C>                    <C>                      <C>
                                                Amount of Principal    Unpaid Principal
          Date           Amount of Advance      Paid or Prepaid        Balance                  Notation Made By


- ------------------------ ---------------------- ---------------------- ------------------------ --------------------

- ------------------------ ---------------------- ---------------------- ------------------------ --------------------

- ------------------------ ---------------------- ---------------------- ------------------------ --------------------

- ------------------------ ---------------------- ---------------------- ------------------------ --------------------

- ------------------------ ---------------------- ---------------------- ------------------------ --------------------

- ------------------------ ---------------------- ---------------------- ------------------------ --------------------

- ------------------------ ---------------------- ---------------------- ------------------------ ====================
</TABLE>

<PAGE>   20
                                                                EXHIBIT B TO THE
                                                      REVOLVING CREDIT AGREEMENT


                           FORM OF NOTICE OF BORROWING


VEBA AG, as Agent
   for the Lenders parties
   to the Credit Agreement
   referred to below
Bennigsenplatz 1
D-40474 Dusseldorf, Germany                                               [Date]
         Attention: _________________________

Ladies and Gentlemen:

     The undersigned,  MEMC ELECTRONIC MATERIALS,  INC., refers to the Revolving
Credit  Agreement,  dated as of September 23, 1998 (as amended,  supplemented or
otherwise modified from time to time, the "Credit Agreement",  the terms defined
therein being used herein as therein defined),  between the undersigned and VEBA
AG, as Initial Lender and as Agent for the Lenders thereunder,  and hereby gives
you notice, irrevocably,  pursuant to Section 2.02 of the Credit Agreement, that
the undersigned  hereby requests a Borrowing under the Credit Agreement,  and in
that connection sets forth below the information relating to such Borrowing (the
"Proposed Borrowing") as required by Section 2.02(a) of the Credit Agreement:

          (a) The  Business Day of the  Proposed  Borrowing is  _______________,
     ________.

          (b) The initial  Interest  Period for each Advance made as part of the
     Proposed  Borrowing is [one week] [one month] [two months]  [three  months]
     [twelve months].

          (c)   The   aggregate   amount   of   the   Proposed    Borrowing   is
     $________________.

     The undersigned hereby certifies that the following  statements are true on
the  date  hereof,  and  will  be true  on and as of the  date  of the  Proposed
Borrowing:

          (i) the  representations  and  warranties  contained  in Section  4.01
     [(other  than  the  representations  set  forth  in the  last  sentence  of
     subsection (e) thereof)]* of the Credit  Agreement are correct,  before and
     after giving effect to the Proposed Borrowing and to the application of the
     proceeds therefrom, as though made on and as of such date; and

          (ii) no event has  occurred  and is  continuing,  or would result from
     such Proposed Borrowing or from the application of the proceeds  therefrom,
     that constitutes a Default.

                                                 Very truly yours,

                                                 MEMC ELECTRONIC MATERIALS, INC.


                                                 By:___________________________
                                                 Title:

____________

*        To be included in any  Borrowing  Notice  requesting  a Borrowing to be
         made on any Business Day other than the Effective Date.


<PAGE>   21
                                                                EXHIBIT C TO THE
                                                      REVOLVING CREDIT AGREEMENT


                        FORM OF ASSIGNMENT AND ACCEPTANCE

     Reference is made to the Revolving  Credit  Agreement dated as of September
23, 1998 (as amended,  supplemented or otherwise modified from time to time, the
"Credit  Agreement")  between  MEMC  ELECTRONIC  MATERIALS,   INC.,  a  Delaware
corporation  (the  "Borrower"),  and VEBA AG, a company formed under the laws of
the Federal  Republic of Germany  ("VEBA"),  as Initial Lender and as Agent (the
"Agent") for the Lenders  thereunder (each as defined in the Credit  Agreement).
Terms defined in the Credit Agreement are used herein with the same meaning.

     The "Assignor" and the "Assignee" referred to on Schedule 1 hereto agree as
follows:

          1. The  Assignor  hereby  sells and assigns to the  Assignee,  and the
     Assignee hereby purchases and assumes from the Assignor, an interest in and
     to the Assignor's  rights and obligations  under the Credit Agreement as of
     the date hereof equal to the  percentage  interest  specified on Schedule 1
     hereto  of  all  outstanding   rights  and  obligations  under  the  Credit
     Agreement.  After giving effect to such sale and assignment, the Assignee's
     Commitment  and the amount of the Advances owing to the Assignee will be as
     set forth on Schedule 1 hereto.

          2. The Assignor (a)  represents  and warrants that it is the legal and
     beneficial  owner of the interest  being  assigned by it hereunder and that
     such  interest  is free  and  clear  of any  adverse  claim;  (b)  makes no
     representation  or warranty and assumes no  responsibility  with respect to
     any statements, warranties or representations made in or in connection with
     the Credit Agreement or the execution, legality, validity,  enforceability,
     genuineness,  sufficiency  or value of the  Credit  Agreement  or any other
     instrument  or  document   furnished   pursuant   thereto;   (c)  makes  no
     representation  or warranty and assumes no  responsibility  with respect to
     the financial condition of the Borrower or the performance or observance by
     the Borrower of any of its  obligations  under the Credit  Agreement or any
     other instrument or document furnished  pursuant thereto;  and (d) attaches
     the Note held by the  Assignor and requests  that the Agent  exchange  such
     Note for a new Note payable to the order of the Assignee in an amount equal
     to the  Commitment  assumed by the  Assignee  pursuant  hereto or new Notes
     payable to the order of the Assignee in an amount  equal to the  Commitment
     assumed by the Assignee pursuant hereto and the Assignor in an amount equal
     to the  Commitment  retained by the  Assignor  under the Credit  Agreement,
     respectively, as specified on Schedule 1 hereto.

          3. The Assignee (a) confirms that it has received a copy of the Credit
     Agreement,  together with copies of the financial statements referred to in
     Section 4.01 thereof and such other  documents  and  information  as it has
     deemed  appropriate  to make its own credit  analysis and decision to enter
     into this Assignment and Acceptance; (b) agrees that it will, independently
     and without  reliance upon the Agent,  the Assignor or any other Lender and
     based on such documents and information as it shall deem appropriate at the
     time,  continue  to make its own credit  decisions  in taking or not taking
     action  under the Credit  Agreement;  (c)  confirms  that it is an Eligible
     Assignee;  (d)  appoints  and  authorizes  the Agent to take such action as
     agent on its behalf and to exercise  such powers and  discretion  under the
     Credit  Agreement  as are  delegated  to the  Agent by the  terms  thereof,
     together  with such  powers and  discretion  as are  reasonably  incidental
     thereto; (e) agrees that it will perform in accordance with their terms all
     of the obligations  that by the terms of the Credit  Agreement are required
     to be  performed  by it as a Lender;  and (f)  attaches  any U.S.  Internal
     Revenue Service forms required under Section 2.12 of the Credit Agreement.

          4. Following the execution of this Assignment and Acceptance,  it will
     be delivered to the Agent for  acceptance  and recording by the Agent.  The
     effective date for this Assignment and Acceptance  (the  "Effective  Date")
     shall be the date of  acceptance  hereof  by the  Agent,  unless  otherwise
     specified on Schedule 1 hereto.

          5.  Upon  such  acceptance  and  recording  by  the  Agent,  as of the
     Effective  Date, (a) the Assignee shall be a party to the Credit  Agreement
     and, to the extent  provided in this  Assignment and  Acceptance,  have the
     rights and  obligations of a Lender  thereunder and (b) the Assignor shall,
     to the extent provided in this  Assignment and  Acceptance,  relinquish its
     rights and be released from its obligations under the Credit Agreement.

          6. Upon such acceptance and recording by the Agent, from and after the
     Effective  Date,  the  Agent  shall  make all  payments  under  the  Credit
     Agreement  and  the  Notes  in  respect  of the  interest  assigned  hereby
     (including,  without  limitation,  all payments of principal,  interest and
     facility  fees with  respect  thereto) to the  Assignee.  The  Assignor and
     Assignee  shall make all  appropriate  adjustments  in  payments  under the
     Credit  Agreement  and the Notes for periods  prior to the  Effective  Date
     directly between themselves.

          7. This Assignment and Acceptance  shall be governed by, and construed
     in accordance with, the laws of the State of New York.


<PAGE>   22

          8. This  Assignment  and  Acceptance  may be executed in any number of
     counterparts and by different parties hereto in separate counterparts, each
     of which  when so  executed  shall be deemed to be an  original  and all of
     which taken together shall constitute one and the same agreement.  Delivery
     of an executed  counterpart of Schedule 1 to this Assignment and Acceptance
     by  telecopier  shall be  effective  as  delivery  of a  manually  executed
     counterpart of this Assignment and Acceptance.

     IN WITNESS WHEREOF, the Assignor and the Assignee have caused Schedule 1 to
this  Assignment and Acceptance to be executed by their officers  thereunto duly
authorized as of the date specified thereon.


<PAGE>   23
                                   Schedule 1
                                       to
                            Assignment and Acceptance


Percentage interest assigned:                                    _______%
Assignee's Commitment:                                          $_______________
Aggregate outstanding principal amount of Advances assigned:    $_______________
Principal amount of Note payable to Assignee:                   $_______________
Principal amount of Note payable to Assignor:                   $_______________
Effective Date* :   ___________________, _____

                                               [NAME OF ASSIGNOR], as Assignor


                                                By:_____________________________
                                                   Title:

                                                Date: ___________________, _____


                                               [NAME OF ASSIGNEE], as Assignee


                                                By:_____________________________
                                                   Title:


                                                Eurodollar Lending Office
                                                [ADDRESS]



____________

*        This  date  should be no  earlier  than five  Business  Days  after the
         delivery of this Assignment and Acceptance to the Agent.

<PAGE>   24

Accepted this ______ day
of _______________, ____


VEBA AG, as Agent


By:_______________________
   Title:

<PAGE>   1
                                                                    EXHIBIT 99-1


                                                             CONTACT: Sam Duggan
                                                    Director, Investor Relations
                                                                  (314) 279-5920

                                                   Michele Katz/Connie Bienfait/
                                                                  Elric Martinez
                                                         Morgen-Walke Associates
                                                                Press: Lee Foley
                                                                  (212) 850-5600


              MEMC APPOINTS HELMUT MAMSCH TO CHAIRMAN OF THE BOARD
               AND DR. HANS MICHAEL GAUL TO THE BOARD OF DIRECTORS



St. Peters, MO, August 13, 1998 -- MEMC Electronic  Materials,  Inc. (NYSE: WFR)
today  announced the appointment of Helmut Mamsch to the position of Chairman of
the Board and Dr. Hans Michael Gaul to the Board of Directors.

Mr.  Mamsch has been a member of MEMC's Board of Directors  since March 1998 and
replaces Dr. Erhard Meyer-Galow as Chairman of the Board. Dr.  Meyer-Galow,  who
was  recently  named  Chairman  of the Board of  Management  of Stinnes AG, will
remain a member of the MEMC Board of Directors.

Mr.  Mamsch  became a member of the Board of  Management  of VEBA AG in 1993 and
recently assumed  responsibility  for VEBA's corporate strategy and development.
Previously,  he served as a member of the Board of Management of Raab Karcher AG
where he was  responsible  for the  Electronics  Division and ultimately  became
Chairman  of the Board of  Management  in 1991.  Mr.  Mamsch  also served as the
Chairman  of the Board of  Management  of Stinnes AG from July 1996 until  March
1998. Prior to that, he had 17 years of management experience at Coutinho Caro &
Co. AG. Mr. Mamsch also serves on the Supervisory Boards of Commerzbank AG, Kali
and Salz Beteiligungs AG, Logica Plc, Readymix AG, SGE Deutsche Holding GmbH and
STEAG AG.

Dr. Gaul became a member of the Board of  Management  of VEBA AG in 1990 and has
served as Chief Financial Officer since 1996. Previously,  he served as a member
of the  Board of  Management  of  PreussenElektra  AG for 12 years  where he was
responsible for legal affairs and  subsequently  for  procurement,  distribution
companies and marketing and sales.  Dr. Gaul became Deputy Chairman of the Board
of Management of  PreussenElektra  AG in 1993. He also serves on the Supervisory
Boards of Allianz Versicherungs AG, Degussa AG, Deutsche Krankenversicherung AG,
Huls AG, RAG Aktiengesellschaft, VAW aluminum AG and Volkswagen AG.

"We will greatly  benefit from the wealth of knowledge  that Mr.  Mamsch and Dr.
Gaul bring to MEMC,"  commented  Ludger H. Viefhues,  Chief  Executive  Officer.
"Their experience and expertise in strategic business  development and financial
matters will be valuable resources as we move forward."

"I look forward to working with the management  team at MEMC as they continue to
focus on ways to  reduce  operating  costs as the  Company  works  through  this
difficult market  environment,"  stated Mr. Mamsch. "As we have indicated in the
past, VEBA AG remains committed to MEMC and will continue to support the Company
in the future."

MEMC is 53.0% owned by VEBA AG through its U.S. subsidiary Huls Corporation.  In
the near future, Huls Corporation will be merged into VEBA AG's U.S. subsidiary,
VEBA  Corporation,  as part of the business  combination  of VEBA AG's  chemical
subsidiary, Huls AG, with Degussa AG. When this occurs VEBA Corporation will own
directly the 53.0% of MEMC formerly held in the name of Huls Corporation.

VEBA AG is headquartered in Dusseldorf,  Germany and commands leading  positions
in the fields of electricity,  chemicals,  oil,  distribution,  logistics,  real
estate management, silicon wafers and telecommunications. With approximately $47
billion in sales and 450,000 shareholders worldwide, VEBA AG is one of Germany's
largest  industrial  companies  according  to market  capitalization  and one of
Europe's largest publicly-held companies.

MEMC is the second largest  producer of silicon wafers in the world. The silicon
wafer is the fundamental  building block of semiconductors,  which, in turn, are
found in every type of microelectronics application, including computer systems,
telecommunications  equipment,   automobiles,   consumer  electronics  products,
industrial  automation and control systems,  and analytical and defense systems.
Headquartered in St. Peters, MO, MEMC operates manufacturing facilities directly
or through joint ventures in Italy, Japan, Malaysia, South Korea, Taiwan and the
United States. To learn more about MEMC visit its web site at www.memc.com

The matter  discussed  in this news  release  regarding  the  commitment  to and
continued  support  of  MEMC by VEBA  AG is a  forward-looking  statement.  Such
statement  involve  certain  risks and  uncertainties  that could  cause  actual
results  to  differ  materially  from  those in the  forward-looking  statement.
Potential  risks and  uncertainties  include  such  factors  as  demand  for the
Company's  silicon wafers,  utilization of  manufacturing  capacity,  demand for
semiconductors generally,  changes in the pricing environment,  general economic
conditions in Asia and Japan,  competitors' actions and other risks described in
the Company's filings with the Securities and Exchange Commission, including the
report on Form 10-K for the year ended December 31, 1997.  This  forward-looking
statement  represents the Company's judgment as of the date of this release. The
<PAGE>   2


Company   disclaims,   however,   any  intent  or   obligation  to  update  this
forward-looking statement.


                                      # # #















<PAGE>   1
                                                                    EXHIBIT 99-2

                                                             CONTACT: Sam Duggan
                                                    Director, Investor Relations
                                                                  (314) 279-5920

                                                   Michele Katz/Connie Bienfait/
                                                                  Elric Martinez
                                                         Morgen-Walke Associates
                                                                Press: Lee Foley
                                                                  (212) 850-5600


            MEMC RECEIVES AN ADDITIONAL $100 MILLION CREDIT FACILITY
                    AND EXTENDS OUTSTANDING DEBT WITH VEBA AG


St. Peters, MO, October 1, 1998 -- MEMC Electronic  Materials,  Inc. (NYSE: WFR)
today  announced  that the Company has received an  additional  three-year  $100
million credit  facility from VEBA AG. In addition,  all  outstanding  debt with
VEBA AG and its affiliates maturing prior to January 1, 2001 will be extended to
2001.

As part of this  agreement,  MEMC has agreed to increases in the interest  rates
payable on the Company's outstanding debt with VEBA AG and its affiliates. These
higher rates,  which are in part  attributable to extended terms, will result in
an increase in interest expense of approximately $15 million per year based upon
$680 million of debt outstanding with VEBA AG and its affiliates as of September
30, 1998.  Additionally,  all  outstanding  debt with VEBA AG and its affiliates
maturing  between today and 2001 will be extended at maturity and repriced based
upon  then-current  interest  rates.  MEMC intends to use the additional  credit
facilities for general corporate purposes.

MEMC is 53.0% owned by VEBA AG through  its U.S.  subsidiary  VEBA  Corporation.
VEBA AG is headquartered in Dusseldorf, Germany and is a leader in the fields of
electricity,  chemicals,  oil, distribution,  logistics, real estate management,
silicon wafers and  telecommunications.  With approximately $46 billion in sales
and  450,000  shareholders  worldwide,  VEBA  AG is  one  of  Germany's  largest
industrial  companies  according  to market  capitalization  and one of Europe's
largest publicly held companies.

MEMC is the second largest  producer of silicon wafers in the world. The silicon
wafer is the fundamental  building block of semiconductors,  which, in turn, are
found in every type of microelectronics application, including computer systems,
telecommunications  equipment,   automobiles,   consumer  electronics  products,
industrial  automation and control systems,  and analytical and defense systems.
Headquartered in St. Peters, MO, MEMC operates manufacturing facilities directly
or through joint ventures in Italy, Japan, Malaysia, South Korea, Taiwan and the
United States. To learn more about MEMC visit its web site at www.memc.com

The matter  discussed  in this news  release  regarding  an increase in interest
expense on existing debt  outstanding  is a  forward-looking  statement.  Such a
statement  involves  certain  risks and  uncertainties  that could cause  actual
results  to  differ  materially  from  those in the  forward-looking  statement.
Potential  risks and  uncertainties  include such factors as changes in interest
rates  which will  affect the  interest  rates  payable by the Company and other
risks  described  in the  Company's  filings  with the  Securities  and Exchange
Commission,  including  the report on Form 10-K for the year ended  December 31,
1997. This forward-looking statement represents the Company's judgment as of the
date of this release.  The Company disclaims,  however, any intent or obligation
to update this forward-looking statement.


                                      # # #
















© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission