MEMC ELECTRONIC MATERIALS INC
10-K/A, 1998-12-10
SEMICONDUCTORS & RELATED DEVICES
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                                   FORM 10-K/A
                                AMENDMENT NO. 2
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   (Mark One)
            [X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934

                   For the fiscal year ended December 31, 1997
                                       or

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

          For the transition period from ____________ to _____________

                         Commission File Number 1-13828

                         MEMC ELECTRONIC MATERIALS, INC.
             (Exact name of registrant as specified in its charter)

            DELAWARE                                           56-1505767
(State or other jurisdiction of                              (I.R.S. Employer
 incorporation or organization)                              Identification No.)

         501 PEARL DRIVE (CITY OF O'FALLON), ST. PETERS, MISSOURI 63376
         (Address of principal executive offices)            (Zip Code)

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

           Securities registered pursuant to Section 12(b) of the Act:

Title of each class:                  Name of each exchange on which registered:
$.01 par  value  Common  Stock                        New York  Stock  Exchange

           Securities registered pursuant to Section 12(g) of the Act:
                                      None
                                (Title of class)

     Indicate  by check mark  whether the  registrant  (1) has filed all reports
required to be filed by Section 13 or 15(d) of the  Securities  Exchange  Act of
1934  during  the  preceding  12 months  (or for such  shorter  period  that the
registrant was required to file such reports),  and (2) has been subject to such
filing requirements for the past 90 days. [X] Yes [ ] No

     Indicate by check mark if disclosure of delinquent  filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to the
best of registrant's  knowledge,  in definitive proxy or information  statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K. [X]

     The aggregate market value of the voting stock held by nonaffiliates of the
registrant,  based upon the closing  price of such stock on December 4, 1998, as
reported by the New York Stock Exchange, was approximately $176.2 million.

     The number of shares  outstanding  of the  registrant's  Common Stock as of
December 4, was 40,507,216 shares.

                         -----------------------------

                       DOCUMENTS INCORPORATED BY REFERENCE
     (1) Portions of the  registrant's  Annual  Report to  Stockholders  for the
fiscal  year  ended  December  31,  1997  (Part I,  Part II,  and Part IV of the
original Form 10-K).
     (2) Portions of the  registrant's  Notice of Annual Meeting of Stockholders
and Proxy Statement dated March 23, 1998 (Part III of the original Form 10-K).


<PAGE>

                                     PART IV

Item 14.  Exhibits, Financial Statement Schedules and Reports on Form 8-K


3.   Exhibits

     See the Exhibit Index beginning at page 3 of this report.  For a listing of
all management  contracts and compensatory plans or arrangements  required to be
filed as exhibits to this  report,  see the Exhibits  listed under  Exhibit nos.
10-n through 10-r and Exhibit nos. 10-aa, 10-oo,  10-pp,  10-xx, 10-yy,  10-ggg,
10-hhh,  10-iii,  10-nnn, 10-ooo, and 10-ppp of the Exhibit Index. The following
Exhibits listed in the Exhibit Index are filed with this report.

10-ll     Seller  Technology  License Agreement dated as of July 31, 1995, among
          Albemarle Corporation, the Company and MEMC Pasadena, Inc.

10-mm     Technology  Purchase  Agreement  dated  as of  July  31,  1995,  among
          Albemarle Corporation and the Company

10-nn     Ground Lease  Agreement dated as of July 31, 1995,  between  Albemarle
          Corporation and MEMC Pasadena, Inc.

10-nn(1)  Amendment to Ground Lease Agreement dated as of May 31, 1997,  between
          the Company, MEMC Pasadena, Inc., and Albemarle Corporation

10-nnn    Consulting  Agreement dated December 1, 1997,  between the Company and
          Dr. Robert M. Sandfort


4.   Reports on Form 8-K

     No reports on Form 8-K were filed by the Company  during the quarter  ended
December 31, 1997.


                                   SIGNATURES

     Pursuant  to the  requirements  of  Section  13 or 15(d) of the  Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.

                                          MEMC ELECTRONIC MATERIALS, INC.


                                          By: /s/ JAMES M. STOLZE
                                              __________________________________
                                                  James M. Stolze
                                              Executive Vice President and Chief
                                              Financial Officer

Date:  December 10, 1998

<PAGE>
                                  EXHIBIT INDEX

     These  Exhibits are numbered in  accordance  with the Exhibit Table of Item
601 of Regulation S-K.

Exhibit
  No.      Description
_______    _____________________________________________________________________

  2       Omitted -- Inapplicable
  3(i)    Restated Certificate of Incorporation of the Company  (Incorporated by
          reference  to Exhibit 3-a of the  Company's  Form 10-Q for the Quarter
          ended June 30, 1995)
  3(ii)   Restated By-laws of the Company  (Incorporated by reference to Exhibit
          3-b of the Company's  Form 10-Q for the Quarter  ended  September 30,
          1996)
  4       Omitted-- Inapplicable
  5       Omitted-- Inapplicable
  9       Omitted-- Inapplicable
  *10-a   Shareholders  Agreement dated May 24, 1994 among the Company and China
          Steel Corporation ("China Steel"),  China Development  Corporation and
          Chiao  Tung  Bank  (Incorporated  by  reference  to  Exhibit  10(a) of
          Amendment No. 4 to the Company's Form S-1  Registration  Statement No.
          33-92412)
  *10-b   Technology  Cooperation  Agreement  dated October 26, 1994 between the
          Company  and  Taisil  Electronic  Materials   Corporation   ("Taisil")
          (Incorporated  by reference to Exhibit 10-b of Amendment  No. 4 to the
          Company's Form S-1 Registration Statement No. 33-92412)
  10-c    Joint  Venture  Agreement  dated  August 28,  1990 among the  Company,
          Pohang Iron and Steel Company,  Ltd. ("POSCO") and Samsung Electronics
          Company,  Ltd. ("Samsung")  (Incorporated by reference to Exhibit 10-c
          of Amendment No. 1 to the Company's  Form S-1  Registration  Statement
          No. 33-92412)
  10-d    First  Amendment to Joint  Venture  Agreement  dated  December 9, 1993
          among the  Company,  POSCO and Samsung  (Incorporated  by reference to
          Exhibit 10-d of Amendment No. 1 to the Company's Form S-1 Registration
          Statement No. 33-92412)
  10-e    Second  Amendment to Joint Venture  Agreement  dated December 30, 1994
          among the  Company,  POSCO and Samsung  (Incorporated  by reference to
          Exhibit 10-e of Amendment No. 1 to the Company's Form S-1 Registration
          Statement No. 33-92412)
  *10-f   Technical  Agreement  dated  December 19, 1990 between the Company and
          POSCO Huls  Company  Limited  ("PHC")  (Incorporated  by  reference to
          Exhibit 10-f of Amendment No. 1 to the Company's Form S-1 Registration
          Statement No. 33-92412)
  *10-g   Amendment to Technical  Agreement  dated as of January 1, 1995 between
          the Company and PHC  (Incorporated  by  reference  to Exhibit  10-g of
          Amendment No. 1 to the Company's Form S-1  Registration  Statement No.
          33-92412)
  *10-h   Shareholder's  Agreement  dated as of May 16, 1995 between the Company
          and Texas Instruments  Incorporated ("TI")  (Incorporated by reference
          to  Exhibit  10-h  of  Amendment  No.  4 to  the  Company's  Form  S-1
          Registration Statement No. 33-92412)
  *10-i   TI Purchase  Agreement  dated as of June 30, 1995 between the Company,
          MEMC  Southwest  Inc.  ("MEMC  Southwest")  and  TI  (Incorporated  by
          reference to Exhibit 10-i of the  Company's  Form 10-Q for the Quarter
          ended June 30, 1995)
  *10-i(1) Amendment  to TI  Purchase  Agreement  dated as of June 5,  1997,
          between  MEMC  Southwest  Inc.  and TI  (Incorporated  by reference to
          Exhibit 10-i of the Company's Form 10-Q for the Quarter ended June 30,
          1997)
  10-j    Lease Agreement  Covering Silicon Wafer Operation  Premises dated June
          30, 1995 between TI and MEMC Southwest  (Incorporated  by reference to
          Exhibit 10-j of the Company's Form 10-Q for the Quarter ended June 30,
          1995)
  10-j(1) Sublease  Agreement covering Silicon Wafer Operation Premises dated
          June 30, 1995 between TI and MEMC Southwest (Incorporated by reference
          to Exhibit  10-j(1) of the  Company's  Form 10-Q for the Quarter ended
          June 30, 1995)
  *10-k   Technology  Transfer  Agreement  dated as of June 30, 1995 between the
          Company,  TI and MEMC Southwest  (Incorporated by reference to Exhibit
          10-k of the Company's Form 10-Q for the Quarter ended June 30, 1995)
  10-l    Registration Rights Agreement between the Company and Huls Corporation
          (Incorporated  by reference to Exhibit 10-l of the Company's Form 10-K
          for the Year ended December 31, 1995)
  10-m    Form of Master Reserve Volume Agreement  (Incorporated by reference to
          Exhibit 10-m of the  Company's  Form 10-K for the Year ended  December
          31, 1995)
  +10-n   Employment  Agreement  between the Company and Dr.  Robert M. Sandfort
          (Incorporated  by reference to Exhibit 10-q of the Company's Form 10-K
          for the Year ended December 31, 1995)
  +10-o   Employment  Agreement  dated as of April 1, 1993  among  Huls  Belgium
          S.A.,  the Company and Marcel  Coinne  (Incorporated  by  reference to
          Exhibit 10-r of Amendment No. 1 to the Company's Form S-1 Registration
          Statement No. 33-92412)
  +10-p   MEMC   Supplemental    Executive   Pension   Plan   1997   Restatement
          (Incorporated  by reference to Exhibit 10-s of the Company's Form 10-Q
          for the Quarter ended March 31, 1997)
  +10-q   MEMC Electronic Materials,  Inc. 1995 Equity Incentive Plan as Amended
          and Restated on March 18, 1997  (Incorporated  by reference to Exhibit
          10-t of the Company's Form 10-Q for the Quarter ended March 31, 1997)
  +10-q(1) Form of Stock Option and Restricted Stock Agreement  (Incorporated
          by reference  to Exhibit  10-t(1) of the  Company's  Form 10-K for the
          Year ended December 31, 1995)
  +10-q(2) Stock Option and Restricted  Stock  Agreement  between the Company
          and Dr.  Robert M.  Sandfort  (Incorporated  by  reference  to Exhibit
          10-t(3) of the  Company's  Form 10-K for the Year ended  December  31,
          1995)
  +10-r   Annual  Incentive  Plan for Selected Key Employees of MEMC  Electronic
          Materials,  Inc. and its  Subsidiaries  (Incorporated  by reference to
          Exhibit 10-u of Amendment No. 1 to the Company's Form S-1 Registration
          Statement No. 33-92412)
  10-s    Service  Agreement  dated January 1, 1995 between the Company and Huls
          Corporation  (Incorporated  by  reference to Exhibit 10-v of Amendment
          No. 1 to the Company's Form S-1 Registration Statement No. 33-92412)
  10-t    Letter  Agreement  dated June 19, 1995 amending the Service  Agreement
          dated  January  1,  1995  among  the  Company  and  Huls   Corporation
          (Incorporated  by reference to Exhibit 10-w of the Company's Form 10-Q
          for the Quarter ended June 30, 1995)
  10-u    Agency and  Services  Agreement  dated  January 1, 1995  between  MEMC
          Electronic  Materials,  SpA and  Huls  France  S.A.  (Incorporated  by
          reference to Exhibit 10-x of Amendment No. 1 to the Company's Form S-1
          Registration Statement No. 33-92412)
  10-v    Agency  and  Services  Agreement  dated  April 1,  1989  between  MEMC
          Electronic  Materials,  SpA and Huls  (U.K.)  Ltd.  and the  amendment
          thereto dated November 20, 1991  (Incorporated by reference to Exhibit
          10-y  of  Amendment  No.  1 to the  Company's  Form  S-1  Registration
          Statement No. 33- 92412)
  10-w    Service  Agreement  effective  July 1, 1995  between  MEMC  Electronic
          Materials,   SpA  and  Huls  AG  (and  English  translation   thereof)
          (Incorporated  by reference to Exhibit 10-z of the Company's Form 10-K
          for the Year ended December 31, 1995)
  10-x    Sales Representative and Offer Agency Agreement dated November 7, 1991
          between MEMC Electronic Materials,  SpA and MEMC Electronic Materials,
          Company (now MEMC Huls Korea  Company)  (Incorporated  by reference to
          Exhibit  10-aa  of  Amendment   No.  1  to  the  Company's   Form  S-1
          Registration Statement No. 33-92412)
  *10-y   Trichlorosilane  Supply  Agreement  between MEMC Electronic  Materials
          SpA and Huls Silicone GmbH dated as of December 31, 1995 (Incorporated
          by reference to Exhibit 10-bb of the Company's  Form 10-K for the Year
          ended December 31, 1995)
  10-z    Sales Representative and Offer Agency Agreement dated December 9, 1991
          between the Company and MEMC Electronic  Materials,  Company (now MEMC
          Huls Korea  Company) (Incorporated  by  reference  to Exhibit 10-cc of
          Amendment No. 1 to the Company's Form S-1  Registration  Statement No.
          33-92412)
  +10-aa  Employment  Agreement  effective  as of June 16,  1995  between the
          Company  and James M. Stolze  (Incorporated  by  reference  to Exhibit
          10-ee of  Amendment  No.  1 to the  Company's  Form  S-1  Registration
          Statement No. 33-92412)
  10-bb   Note Agreement  dated as of June 30, 1995 among MEMC  Southwest  Inc.,
          Texas  Instruments  Incorporated and MEMC Electronic  Materials,  Inc.
          (Incorporated by reference to Exhibit 10-gg of the Company's Form 10-K
          for the Year ended December 31, 1995)
  10-cc   Credit  Agreement  dated as of July 10, 1995,  between the Company and
          Huls  Corporation  (Incorporated  by reference to Exhibit 10-jj of the
          Company's Form 10-Q for the Quarter ended June 30, 1995)
  10-dd   Credit  Agreement  dated as of July 10, 1995,  between the Company and
          Huls  Corporation  (Incorporated  by reference to Exhibit 10-kk of the
          Company's Form 10-Q for the Quarter ended June 30, 1995)
  10-ee   Credit  Agreement  dated as of July 10, 1995,  between the Company and
          Huls  Corporation  (Incorporated  by reference to Exhibit 10-ll of the
          Company's Form 10-Q for the Quarter ended June 30, 1995)
  10-ff   Credit  Agreement  dated as of July 10, 1995,  between the Company and
          Huls  Corporation  (Incorporated  by reference to Exhibit 10-mm of the
          Company's Form 10-Q for the Quarter ended June 30, 1995)
  10-gg   Credit  Agreement  dated as of July 10, 1995,  between the Company and
          Huls AG  (Incorporated  by reference to Exhibit 10-nn of the Company's
          Form 10-Q for the Quarter ended June 30, 1995)
  10-hh   Credit  Agreement  dated as of July 10, 1995,  between the Company and
          Huls AG  (Incorporated  by reference to Exhibit 10-oo of the Company's
          Form 10-Q for the Quarter ended June 30, 1995)
  10-ii   Revolving  Credit  Agreement  dated as of July 10,  1995,  between the
          Company and Huls AG (Incorporated by reference to Exhibit 10-pp of the
          Company's Form 10-Q for the Quarter ended June 30, 1995)
  10-jj   Reimbursement  Agreement  effective  as of August 1, 1995  between the
          Company and Huls AG (Incorporated by reference to Exhibit 10-rr of the
          Company's Form 10-K for the Year ended December 31, 1995)
  10-kk   MEMC Technology  License Agreement dated as of July 31, 1995,  between
          Albemarle  Corporation and the Company  (Incorporated  by reference to
          Exhibit 10-tt of the Company's  Form 10-K for the Year ended  December
          31, 1995)
  *10-ll  Seller Technology License Agreement dated as of July 31, 1995, among
          Albemarle   Corporation,   the  Company,   and  MEMC  Pasadena,   Inc.
  *10-mm  Technology  Purchase  Agreement  dated as of July 31,  1995,  among
          Albemarle  Corporation and the Company
  10-nn   Ground Lease  Agreement dated as of July 31, 1995,  between  Albemarle
          Corporation  and MEMC  Pasadena,  Inc.
  10-nn(1)  Amendment  to Ground  Lease  Agreement  dated as of May 31, 1997,
          between the Company,  MEMC Pasadena,  Inc., and Albemarle  Corporation
  +10-oo  Form of Stock  Option and  Performance  Restricted  Stock  Agreement
          (Incorporated by reference to Exhibit 10-yy of the Company's Form 10-K
          for the Year ended December 31, 1995)
  +10-pp  Form of Stock Option Agreement (Incorporated by reference to Exhibit
          10-zz of the Company's Form 10-K for the Year ended December 31, 1995)
  10-qq   Credit Agreement  between the Company and Huls AG dated as of December
          22, 1995 (Incorporated by reference to Exhibit 10-aaa of the Company's
          Form 10-K for the Year ended December 31, 1995)
  10-rr   Credit Agreement  between the Company and Huls AG dated as of December
          22, 1995 (Incorporated by reference to Exhibit 10-bbb of the Company's
          Form 10-K for the Year ended December 31, 1995)
  10-ss   Credit Agreement  between the Company and Huls AG dated as of December
          22, 1995 (Incorporated by reference to Exhibit 10-ccc of the Company's
          Form 10-K for the Year ended December 31, 1995)
  10-tt   Credit Agreement  between the Company and Huls AG dated as of December
          22, 1995 (Incorporated by reference to Exhibit 10-ddd of the Company's
          Form 10-K for the Year ended December 31, 1995)
  10-uu   Commitment  Fee  Agreement  between the  Company and Huls  Corporation
          dated as of July 10, 1995 (Incorporated by reference to Exhibit 10-eee
          of the Company's Form 10-K for the Year ended December 31, 1995)
  10-vv   Commitment  Fee  Agreement  between the  Company and Huls  Corporation
          dated as of July 10, 1995 (Incorporated by reference to Exhibit 10-fff
          of the Company's Form 10-K for the Year ended December 31, 1995)
  10-ww   Commitment  Fee  Agreement  between the  Company and Huls  Corporation
          dated as of July 10, 1995 (Incorporated by reference to Exhibit 10-ggg
          of the Company's Form 10-K for the Year ended December 31, 1995)
  +10-xx  Employment Agreement dated September 3, 1996 between the Company and
          Ludger H. Viefhues (Incorporated by reference to Exhibit 10-hhh of the
          Company's Form 10-Q for the Quarter ended September 30, 1996)
  +10-yy  Stock  Option  Agreement  dated as of  September 1, 1996 between the
          Company and Ludger H. Viefhues  (Incorporated  by reference to Exhibit
          10-iii of the Company's Form 10-Q for the Quarter ended  September 30,
          1996)
  *10-zz  HSC/MEMC Agreement dated as of December 27, 1994 between the Company
          and Hemlock  Semiconductor  Corporation  ("Hemlock")  (Incorporated by
          reference  to  Exhibit  *10-ggg  of the  Company's  Form  10-Q for the
          Quarter ended March 31, 1997)
  *10-zz(1)  Letter  Amendment  dated  as of June  20,  1995 to the  HSC/MEMC
          Agreement  between the Company and Hemlock  (Incorporated by reference
          to Exhibit *10-ggg(1) of the Company's Form 10-Q for the Quarter ended
          March 31, 1997)
  *10-zz(2) Letter  Amendment  dated as of  November 8, 1996 to the  HSC/MEMC
          Agreement  between the Company and Hemlock  (Incorporated by reference
          to Exhibit *10-ggg(2) of the Company's Form 10-Q for the Quarter ended
          March 31, 1997)
  *10-aaa Joint  Venture  Agreement  dated as of December  20, 1996  between the
          Company and Khazanah  Nasional  Berhad  (Incorporated  by reference to
          Exhibit  10-hhh of the Company's Form 10-K for the Year ended December
          31, 1996)
  *10-bbb Technology Cooperation Agreement dated as of December 20, 1996 between
          the Company and MEMC Kulim Electronic Materials, SDN BHD (Incorporated
          by reference to Exhibit 10-iii of the Company's Form 10-K for the Year
          ended December 31, 1996)
  10-ccc  Credit  Agreement dated as of December 1, 1996 between the Company and
          Huls AG  (Incorporated by reference to Exhibit 10-jjj of the Company's
          Form 10-K for the Year ended December 31, 1996)
  10-ddd  Credit  Agreement dated as of December 1, 1996 between the Company and
          Huls AG  (Incorporated by reference to Exhibit 10-kkk of the Company's
          Form 10-K for the Year ended December 31, 1996)
  10-eee  Credit  Agreement  dated as of April 1, 1996  between  the Company and
          Huls AG  (Incorporated by reference to Exhibit 10-lll of the Company's
          Form 10-K for the Year ended December 31, 1996)
  10-fff  Fourth  Short-Term  Loan Agreement  dated as of March 31, 1996 between
          the Company and Huls Corporation (Incorporated by reference to Exhibit
          10-mmm of the  Company's  Form 10-K for the Year  ended  December  31,
          1996)
  +10-ggg Form of Stock Option and  Performance  Restricted  Stock  Agreement
          (Incorporated  by reference to Exhibit  10-nnn of the  Company's  Form
          10-Q for the Quarter ended March 31, 1997)
  +10-hhh Form of  Stock  Option  Agreement  (Incorporated  by  reference  to
          Exhibit  10-ooo of the Company's Form 10-Q for the Quarter ended March
          31, 1997)
  +10-iii Form   of   Stock   Option   Agreement   (Nonemployee   Directors)
          (Incorporated  by reference to Exhibit 10-ppp of the  Company's  Form
          10-Q for the Quarter ended March 31, 1997)
  10-jjj  Five Year  Credit  Agreement  dated as of June 26,  1997,  between the
          Company and Huls  Corporation  (Incorporated  by  reference to Exhibit
          10-qqq of the Company's Form 10-Q for the Quarter ended June 30, 1997)
  10-kkk  Six Year  Credit  Agreement  dated as of June 26,  1997,  between  the
          Company and Huls  Corporation  (Incorporated  by  reference to Exhibit
          10-rrr of the Company's Form 10-Q for the Quarter ended June 30, 1997)
  10-lll  Seven Year Credit  Agreement  dated as of June 26,  1997,  between the
          Company and Huls  Corporation  (Incorporated  by  reference to Exhibit
          10-sss of the Company's Form 10-Q for the Quarter ended June 30, 1997)
  10-mmm  Eight Year Credit  Agreement  dated as of June 26,  1997,  between the
          Company and Huls  Corporation  (Incorporated  by  reference to Exhibit
          10-ttt of the Company's Form 10-Q for the Quarter ended June 30, 1997)
  +10-nnn Consulting  Agreement  dated December 1, 1997,  between the Company
          and Dr.  Robert M.  Sandfort
  +10-ooo Separation Agreement, General Release and Covenant Not to Sue dated
          December  31,   1997,   between  the  Company  and  Tommy  L.  Cadwell
          (Incorporated  by reference to Exhibit  10-ooo of the  Company's  Form
          10-K for the Year ended December 31, 1997)
  +10-ppp Letter Agreement dated as of April 1, 1993, between the Company and
          Ralph D. Hartung  (Incorporated  by reference to Exhibit 10-ppp of the
          Company's Form 10-K for the Year ended December 31, 1997)
  11      Omitted-- Inapplicable
  12      Omitted-- Inapplicable
  13      Pages 4 through 5 (the paragraphs  contained in "To Our  Stockholders"
          under the  section  entitled  "Looking  Ahead"),  pages 12  through 41
          (excluding  the "Report of Management" on page 40), and page 44 of the
          Company's 1997 Annual Report  (Incorporated by reference to Exhibit 13
          of the Company's Form 10-K for the Year ended December 31, 1997)
  16      Omitted -- Inapplicable
  18      Omitted -- Inapplicable
  21      Subsidiaries of the Company  (Incorporated  by reference to Exhibit 21
          of the Company's Form 10-K for the Year ended December 31, 1997)
  22      Omitted -- Inapplicable
  23-a    Consent of KPMG Peat Marwick LLP (Incorporated by reference to Exhibit
          23-a of the Company's Form 10-K for the Year ended December 31, 1997)
  23-b    Consent of KPMG San Tong Corp.  (Incorporated  by reference to Exhibit
          23-b of the Company's Form 10-K for the Year ended December 31, 1997)
  23-c    Consent of KPMG Peat  Marwick  (Incorporated  by  reference to Exhibit
          23-c of the Company's Form 10-K for the Year ended December 31, 1997)
  24      Powers of Attorney  submitted  by Dr.  Erhard  Meyer-Galow;  Willem D.
          Maris;  Dr. Alfred  Oberholz;  Paul T.  O'Brien;  and Michael B. Smith
          (Incorporated  by reference to Exhibit 24 of the  Company's  Form 10-K
          for the Year ended December 31, 1997)
  27      Financial  Data  Schedule for the Fiscal Year Ended  December 31, 1997
          (filed electronically with the SEC only) (Incorporated by reference to
          Exhibit 27 of the Company's  Form 10-K for the Year ended December 31,
          1997)
  27-a    Restated  Financial  Data Schedule for the Fiscal Year ended  December
          31,  1996 (filed  electronically  with the SEC only) (Incorporated  by
          reference to Exhibit 27-a of the Company's Form 10-K/A Amendment No. 1
          for the Year ended December 31, 1997)
  27-b    Restated  Financial Data Schedule for the Nine Months ended  September
          30, 1996 (filed electronically with the SEC only) (Incorporated  by
          reference to Exhibit 27-b of the Company's Form 10-K/A Amendment No. 1
          for the Year ended December 31, 1997)
  27-c    Restated  Financial  Data  Schedule  for the Six Months ended June 30,
          1996 (filed electronically with the SEC only)  (Incorporated  by
          reference to Exhibit 27-c of the Company's Form 10-K/A Amendment No. 1
          for the Year ended December 31, 1997)
  99      Omitted -- Inapplicable


- -----------------
*    Confidential  treatment  of certain  portions of these  documents  has been
     granted.

+    These Exhibits constitute all management contracts,  compensatory plans and
     arrangements  required  to be filed as an Exhibit to this form  pursuant to
     Item 14(c) of this report.


                                                          CONFIDENTIAL TREATMENT
                                                              PREVIOUSLY GRANTED

                       SELLER TECHNOLOGY LICENSE AGREEMENT

     THIS AGREEMENT,  made and entered into this 31st day of July,  1995, by and
between ALBEMARLE  CORPORATION,  a Virginia  corporation having an office at 451
Florida Street,  Baton Rouge,  Louisiana 70801 (hereinafter  "ALBEMARLE"),  MEMC
ELECTRONIC  MATERIALS,  INC., a Delaware corporation having offices at 501 Pearl
Drive (City of O'Fallon), P. O. Box 8, St. Peters,  Missouri, 63376 (hereinafter
"MEMC"), and MEMC PASADENA,  INC., a Delaware corporation having offices at 3000
N. South Street, Pasadena, Texas, 77503 (hereinafter "MEMC PASADENA"):

                                   WITNESSETH

     WHEREAS,  ALBEMARLE has entered into an Asset Purchase Agreement dated July
31, 1995 with MEMC;

     WHEREAS,  the  Asset  Purchase  Agreement  provides  in  Section  3.1  that
ALBEMARLE  shall license  certain  technology and patent rights  relating to the
manufacture of polysilicon and sodium aluminum hydride;

     NOW,  THEREFORE,  for and in  consideration  of the  mutual  covenants  and
agreements hereinafter set forth, the parties agree as follows:

                             ARTICLE 1 - DEFINITIONS

     1.01 "Polysilicon  Patent Rights" shall mean the patents listed in Schedule
PAT-3 attached hereto and made a part hereof,  including all  continuations  and
continuation-in-part  patents,  divisionals,  reissues  and  reexamined  patents
derived from those listed.

     1.02 "Polysilicon Manufacturing Technology" shall mean all processes, trade
secrets,  inventions,   discoveries,   improvements,   know-how,  manufacturing,
engineering,  research, development, and testing information and other technical
information,  whether or not patentable,  developed,  used, currently in use, or
currently  planned for use by ALBEMARLE for or in connection with  manufacturing
polysilicon from silane.  Polysilicon Manufacturing Technology shall not include
information   received  by  ALBEMARLE  from  third  parties  under  the  secrecy
agreements  which are  identified  on  Schedule  I-A unless  authorized  by such
agreements or such agreements are assigned to MEMC.

     1.03 "Sodium  Aluminum  Hydride  Manufacturing  Technology"  shall mean all
processes, trade secrets, inventions, discoveries,  improvements,  know-how, and
manufacturing engineering,  research,  development,  and testing information and
other  technical  information,  whether  or  not  patentable,  developed,  used,
currently  in use, or currently  planned for use by  ALBEMARLE in  manufacturing
sodium  aluminum  hydride.  The Sodium  Aluminum  Hydride  Technology  shall not
include  information  received by ALBEMARLE from third parties under the secrecy
agreements  which are  identified  on  Schedule  I-A unless  authorized  by such
agreements or such agreements are assigned to MEMC.

     1.04 "Sodium  Aluminum Hydride Patent Rights" shall mean the patents listed
in  Schedule  PAT-2  attached  hereto  and  made a part  hereof,  including  all
continuations  and  continuation-in-part  patents,  divisionals,   reissues  and
reexamined patents derived from those listed.

     1.05 "Licensed  Product" shall mean Polysilicon which embodies,  is made by
or with the use of, or is used in accordance  with, an invention  defined by one
or more claims of the Polysilicon Patent Rights or is made using the Polysilicon
Manufacturing Technology.

     1.06  "Affiliate"  shall  have the same  meaning  as set forth in the Asset
Purchase Agreement.

     1.07  "Polysilicon  Plant"  shall  mean the  polysilicon  plant  located in
Pasadena,  Texas  and  transferred  by  ALBEMARLE  to MEMC on the  Closing  Date
including any  expansions or increases in the capacity  thereof  however made or
any polysilicon plant which replaces such polysilicon plant.

     1.08  "Net  Present  Value"  of a royalty  payment  which is due  Albemarle
pursuant to Section 2.04(a) shall be defined by the following formula:

          Net Present Value = R +  ([CONFIDENTIAL  MATERIAL HAS BEEN DELETED AND
          FILED SEPARATELY WITH SEC])n

where R is the amount of the  royalty  payment  for which the  determination  is
being made; n is an integer  denoting the number of months  following with Start
Date  to  the  end of  the  month  in  which  the  royalty  is  paid.  By way of
illustration, if a royalty is paid August 13, 1996, and the Start Date is August
31, 1995, the value of n is 12.

     1.09  "Polysilicon"  shall  collectively  mean polysilicon  which meets the
specifications  required  for  the  preparation  of  semiconductor  silicon  and
polysilicon  which meets the  specifications  required  for the  preparation  of
semiconductor   silicon  and  which,   in   addition,   has  been   upgraded  by
dehydrogenation. "Polysilicon" shall not include polysilicon which is unsuitable
for the manufacture of semiconductor grade silicon wafers.

     1.10  "Closing  Date" shall have the same meaning as set forth in the Asset
Purchase Agreement.

     1.11 "Deemed  Quantity" shall have the meaning set forth in Section 2.03(a)
of this Agreement.

     1.12 "Silane  Manufacturing  Technology" shall have the same meaning as set
forth in the Technology Purchase Agreement.

     1.13 "Silane Patent Rights" shall have the same meaning as set forth in the
Technology Purchase Agreement.

     1.14 "Silicon Tetrafluoride  Manufacturing  Technology" shall have the same
meaning as set forth in the Technology Purchase Agreement.

     1.15  "Security  Agreement"  shall  have the same  meaning  as in the Asset
Purchase Agreement.

     1.16  "Event of  Default"  shall have the same  meaning as in the  Security
Agreement.

     1.17  "Deemed  Royalty  Value" shall mean  [CONFIDENTIAL  MATERIAL HAS BEEN
DELETED AND FILED  SEPARATELY  WITH SEC]  multiplied by a fraction (X/Y) wherein
the  numerator  "X" is the  Implicit  Price  Deflator  index for Gross  Domestic
Product  published  in the  Survey  of  Current  Business  (U.S.  Department  of
Commerce, Economics and Statistics Administration,  Bureau of Economic Analysis)
at Table  7.13 as  published  on the Start Date and the  denominator  "Y" is the
Implicit Price Deflator (as defined above) for July 31, 1995.

     1.18 "Start Date" is the first to occur of the following dates; a) the date
on which funds are first appropriated by MEMC or MEMC Pasadena for any expansion
or  other  capacity  modification  of the  Polysilicon  Plant,  or b)  the  date
royalties first become due pursuant to subpart (a) of Section 2.04.

                       ARTICLE 2 - GRANTS AND COMPENSATION

     2.01  Subject  to the terms  and  conditions  set forth in this  Agreement,
ALBEMARLE   grants  to  MEMC  and  MEMC   accepts,   a   perpetual,   worldwide,
royalty-bearing as set forth in Sections 2.04, 2.05 and 2.07, exclusive (even as
against ALBEMARLE),  and irrevocable right and license,  which right and license
MEMC  may  extend  to its  Affiliates,  to  use  the  Polysilicon  Manufacturing
Technology  and to make,  have made,  use and sell the subject matter claimed in
the Polysilicon Patent Rights for any purpose,  including the right to assign to
and  sublicense  others.  Subject to the terms and  conditions set forth in this
Agreement,  MEMC hereby  grants to MEMC PASADENA and MEMC  PASADENA  accepts,  a
royalty-free  and  irrevocable  right and license,  which right and license MEMC
PASADENA may extend to its Affiliates,  under the Polysilicon  Patent Rights and
the  Polysilicon  Manufacturing  Technology  to make,  have  made,  use and sell
Licensed Product at the Polysilicon  Plant. If an Event of Default occurs and is
continuing,  ALBEMARLE shall have the right to terminate all rights and licenses
under this Section 2.01 upon written  notice to MEMC and MEMC  Pasadena  and, in
such event, MEMC and MEMC Pasadena shall cease any further use of the technology
and patent rights licensed under this Section 2.01.

     2.02  Subject  to the terms  and  conditions  set forth in this  Agreement,
ALBEMARLE   grants  to  MEMC  and  MEMC   accepts,   a   perpetual,   worldwide,
royalty-bearing as set forth in Sections 2.04, 2.05 and 2.07, exclusive (even as
against ALBEMARLE),  and irrevocable right and license,  which right and license
MEMC  may  extend  to  its  Affiliates,   under  the  Sodium  Aluminum   Hydride
Manufacturing   Technology  and  the  Sodium  Aluminum  Hydride  Patent  Rights,
including the right to sublicense  others,  to make,  have made,  and use sodium
aluminum hydride to make, have made, use and sell silane and to make, have made,
use and sell  sodium  aluminum  fluoride.  No right or license is granted to use
sodium  aluminum  hydride  manufactured  under  license  for any other  purpose.
Subject to the terms and conditions set forth in this Agreement,  MEMC grants to
MEMC PASADENA and MEMC PASADENA  accepts a royalty-free,  irrevocable  right and
license,  which right and license MEMC  PASADENA  may extend to its  Affiliates,
under the  Sodium  Aluminum  Hydride  Manufacturing  Technology  and the  Sodium
Aluminum  Hydride Patent  Rights,  to make,  have made, and use sodium  aluminum
hydride to make,  have made, use and sell silane and to make, have made, use and
sell sodium aluminum  fluoride at the Polysilicon  Plant. If an Event of Default
occurs and is continuing, ALBEMARLE shall have the right to terminate all rights
and  licenses  under  this  Section  2.02 upon  written  notice to MEMC and MEMC
Pasadena and, in such event,  MEMC and MEMC Pasadena shall cease any further use
of the technology and patent rights licensed under this Section 2.02.

     2.03 MEMC agrees to promptly provide ALBEMARLE with notice in writing prior
to or upon taking any of the following actions:

     (a)  making more than  [CONFIDENTIAL  MATERIAL  HAS BEEN  DELETED AND FILED
          SEPARATELY  WITH SEC] metric tons of  Polysilicon  in the  Polysilicon
          Plant in any calendar year ("Deemed  Quantity") (notice being required
          in each such year when production exceeds the Deemed Quantity, or

     (b)  granting  any  right to a third  party to use the  Polysilicon  Patent
          Rights and/or  Polysilicon  Manufacturing  Technology  to  manufacture
          polysilicon, or

     (c)  increasing  the  capacity of the  Polysilicon  Plant beyond the Deemed
          Quantity by expansion, debottlenecking or other means, or

     (d)  building  a plant for the  manufacture  of  polysilicon  for a purpose
          other than to replace the capacity of the polysilicon plant located in
          Pasadena,  Texas and  transferred  by ALBEMARLE to MEMC on the Closing
          Date.

     2.04 In partial  consideration  for the rights  granted  herein,  Albemarle
shall  receive  a royalty  for sales of  Licensed  Product  manufactured  at the
Polysilicon Plant during the fifteen (15) year period immediately  following the
Closing Date as set forth below:

               (a) for each  kilogram of Licensed  Product sold by MEMC PASADENA
          to its Affiliates and to third parties in a calendar year in excess of
          [CONFIDENTIAL MATERIAL HAS BEEN DELETED AND FILED SEPARATELY WITH SEC]
          metric  tons but not in  excess  of  [CONFIDENTIAL  MATERIAL  HAS BEEN
          DELETED AND FILED  SEPARATELY  WITH SEC] metric tons,  Albemarle shall
          receive a royalty of [CONFIDENTIAL MATERIAL HAS BEEN DELETED AND FILED
          SEPARATELY WITH SEC], and

               (b) for each kilogram of Licensed Product sold in a calendar year
          in  excess  of  [CONFIDENTIAL  MATERIAL  HAS BEEN  DELETED  AND  FILED
          SEPARATELY WITH SEC] metric tons, Albemarle shall receive a royalty to
          be  determined  by  MEMC  and  Albemarle  pursuant  to  a  good  faith
          negotiation as described in Section 2.06.

The  obligation  to pay  royalties to Albemarle  pursuant to subpart (a) of this
Section 2.04 shall terminate fifteen years from the Closing Date or when the Net
Present Value of all royalties paid to Albemarle pursuant to subpart (a) of this
Section  2.04 is equal to the Deemed  Royalty  Value,  whichever is the first to
occur.  The obligation to pay royalties to Albemarle  pursuant to subpart (b) of
this Section  2.04 shall  terminate  fifteen  years from the Closing  Date.  All
royalties due Albemarle pursuant to this Section 2.04 shall be paid to Albemarle
within thirty (30) days following the close of the calendar quarter in which the
sale of the royalty-bearing product occurred.

     2.05 If at any one or more  times  during  the  fifteen  (15)  year  period
immediately  following the Closing Date, MEMC, MEMC PASADENA or any Affiliate of
MEMC or MEMC PASADENA  manufactures  Licensed  Product at a plant other than the
Polysilicon Plant, Albemarle, in addition to any royalties which may be required
by Section 2.04 for Licensed  Product  manufactured  at the  Polysilicon  Plant,
shall  receive a royalty  for the making,  using or selling of Licensed  Product
manufactured  at each  such new  plant  within  the  fifteen  (15)  year  period
immediately following the Closing Date, the royalty to be determined by MEMC and
Albemarle pursuant to a good faith negotiation as described in Section 2.07.

     2.06 In  conducting  negotiations  required  by Section  2.04(b) or Section
2.05, the parties shall use in their consideration the premise that ALBEMARLE is
50%  owner  of  the  Polysilicon   Patent  Rights,   Polysilicon   Manufacturing
Technology,  Sodium Aluminum  Hydride Patent Rights and Sodium Aluminum  Hydride
Manufacturing  Technology  and  further  that  the  Polysilicon  Patent  Rights,
Polysilicon  Manufacturing  Technology,  Sodium Aluminum  Hydride Patent Rights,
Sodium Aluminum Hydride Manufacturing  Technology,  Silane Patent Rights, Silane
Manufacturing Technology and Silicon Tetrafluoride Manufacturing Technology were
valued,  as of the Closing  Date,  [CONFIDENTIAL  MATERIAL  HAS BEEN DELETED AND
FILED  SEPARATELY WITH SEC].  MEMC and ALBEMARLE agree to use such  contemplated
value as a basis for their negotiations, provided, however, that if ALBEMARLE or
MEMC can  demonstrate  in good  faith  that such  contemplated  value is not the
actual value at the time of such negotiations,  then that party may address that
issue as part of the negotiations.  Failing agreement upon a mutually acceptable
royalty  to be paid to  ALBEMARLE  in the  event  of the  occurrence  of acts as
described in 2.04(b) or 2.05, then MEMC and ALBEMARLE shall submit the matter to
arbitration in accordance with the provisions of Section 8.05.

     2.07 If at any one or more  times  MEMC or MEMC  PASADENA  (or any of their
Affiliate(s),  successor(s),  licensee(s)  or  assign(s))  transfers  any of the
Polysilicon Patent Rights, the Polysilicon Manufacturing Technology,  the Sodium
Aluminum Hydride Patent Rights and/or the Sodium Aluminum Hydride  Manufacturing
Technology  by way of license,  sale or  otherwise,  to any third  party  within
fifteen years of the Closing Date,  then ALBEMARLE shall be paid by MEMC or MEMC
PASADENA for each such  transaction the cash equivalent of one-half of any value
(whether  such  value is in terms of cash  compensation,  supply  or  barter  of
product or technology,  cross  licensing of technology or any other value of any
kind) received by or to be received by MEMC or MEMC PASADENA (or either of their
Affiliate(s),  successor(s),  licensee(s) or assign(s))  within fifteen years of
the Closing  Date for the  transfer or the  licensing  of such patent  rights or
technology, such one-half share (in its cash equivalent) to be paid to ALBEMARLE
within  thirty (30) days from the receipt by MEMC or MEMC PASADENA (or either of
their Affiliate(s), successor(s), licensee(s) or assign(s)) of such cash or such
other  value  (whether  such value is in terms of supply or barter of product or
technology,  cross  licensing  of  technology  or any other  value of any kind).
Notwithstanding  the  foregoing,  in the event such a third party pays value for
such a transfer of rights,  some of which is paid within  fifteen years and some
of which is paid more than fifteen years after the Closing  Date,  ALBEMARLE and
MEMC shall, upon the request of either party,  negotiate in good faith such that
ALBEMARLE and MEMC shall receive a fair and equitable portion of the value paid,
taking  into  account  the  extent to which the  timing of the value paid by the
third party  corresponds to the timing of the value received by the third party.
In conducting such  negotiations,  the parties shall use in their  consideration
the  premise  that  ALBEMARLE  is 50% owner of the  Polysilicon  Patent  Rights,
Polysilicon Manufacturing Technology, Sodium Aluminum Hydride Patent Rights, and
Sodium Aluminum Hydride Manufacturing  Technology and that it is contemplated by
ALBEMARLE and MEMC that the Polysilicon Patent Rights, Polysilicon Manufacturing
Technology,  Sodium  Aluminum  Hydride Patent Rights,  Sodium  Aluminum  Hydride
Manufacturing Technology,  Silane Patent Rights, Silane Manufacturing Technology
and  Silicon  Tetrafluoride  Manufacturing  Technology  were  valued,  as of the
Closing Date,  [CONFIDENTIAL MATERIAL HAS BEEN DELETED AND FILED SEPARATELY WITH
SEC].  MEMC and ALBEMARLE  agree to use such  contemplated  value as a basis for
their negotiations, provided, however, that if ALBEMARLE or MEMC can demonstrate
in good faith that such  contemplated  value is not the actual value at the time
of such  negotiations,  then that  party may  address  that issue as part of the
negotiations. Failing agreement upon a mutually acceptable portion to be paid to
ALBEMARLE,  then MEMC and ALBEMARLE  shall submit the matter to  arbitration  in
accordance with the provisions of Section 8.05.

                       ARTICLE 3 - MAINTENANCE OF PATENTS

     3.01 MEMC shall pay all  taxes,  fees or other  expenditures,  and take any
other  measures  that  MEMC  believes  necessary  (in its  sole  discretion)  to
prosecute, issue or maintain the Polysilicon Patent Rights.

     3.02  ALBEMARLE,  in its  discretion,  shall pay all  taxes,  fees or other
expenditures  and take any  other  measures  necessary  to  prosecute,  issue or
maintain the Sodium Aluminum Hydride Patent Rights.

     3.03 If ALBEMARLE,  in its discretion,  determines it will not proceed with
any act or take any measure  required  under 3.02,  to obtain or maintain any of
the licensed patent rights relating to sodium aluminum hydride,  ALBEMARLE shall
provide  timely  notice of such  decision  to MEMC and shall,  at the request of
MEMC,  assign to MEMC the sodium  aluminum  hydride patent  involved in time for
MEMC to undertake any such act or measure.

                           ARTICLE 4 - CONFIDENTIALITY

     4.01 ALBEMARLE shall refrain from disclosing the Polysilicon  Manufacturing
Technology.

     4.02  Notwithstanding the foregoing,  ALBEMARLE is not under any obligation
of confidentiality with respect to any technical information that is part of the
Polysilicon Manufacturing Technology that:

     (a)  at the time of  disclosure  is  generally  available  to the public or
          thereafter becomes generally available to the public by publication or
          otherwise not arising through an act or omission of ALBEMARLE, or

     (b)  is independently made available to ALBEMARLE as a matter of right by a
          third party, or

     (c)  is required by a court or government agency to be disclosed,  provided
          that  ALBEMARLE  gives MEMC at least  thirty (30) days' notice of such
          requirement  so that  MEMC  will have an  opportunity  to oppose  such
          requirement.

For the purpose of the provisions of this paragraph 4.02, technical  information
within  the  Polysilicon  Manufacturing  Technology  shall  not be  deemed to be
generally available to the public or independently  received by ALBEMARLE merely
because  it may be  embraced  by a more  general  disclosure,  or  derived  from
combinations of disclosures,  generally available to the public or independently
made available to ALBEMARLE.

     4.03 MEMC  shall  refrain  from  disclosing  the  Sodium  Aluminum  Hydride
Manufacturing Technology except pursuant to a confidentiality  agreement no less
restrictive than the terms of this Agreement.

     4.04  Notwithstanding  the  foregoing,  MEMC is not under any obligation of
confidentiality  with respect to any technical  information  that is part of the
Sodium Aluminum Hydride Manufacturing Technology that:

     (a)  At the time of  disclosure  is  generally  available  to the public or
          thereafter becomes generally available to the public by publication or
          otherwise not arising through an act or omission of MEMC, or

     (b)  MEMC  can  show  was in  its  possession  prior  to  the  time  of the
          disclosure  hereunder and was not acquired directly or indirectly from
          ALBEMARLE, or

     (c)  is  independently  made  available  to MEMC as a matter  of right by a
          third party, or

     (d)  is required by a court or government agency to be disclosed,  provided
          that MEMC gives  ALBEMARLE  at least  thirty  (30) days notice of such
          requirement  so that ALBEMARLE will have an opportunity to oppose such
          requirement.

For the purpose of the provision of this paragraph 4.04,  technical  information
within the Sodium Aluminum Hydride Manufacturing  Technology shall not be deemed
to be  generally  available  to the public or in the  possession  of MEMC merely
because  it may be  embraced  by a more  general  disclosure,  or  derived  from
combinations  of  disclosures,  generally  available  to  the  public  or in the
possession of MEMC.

                             ARTICLE 5 - TERMINATION

     This Agreement shall terminate upon the expiration of the last to expire of
all patents listed in Schedules PAT-2 and PAT-3 attached hereto, except that the
licenses of Polysilicon  Manufacturing  Technology and Sodium  Aluminum  Hydride
Manufacturing   Technology   granted  in  Article  2  and  the   confidentiality
obligations of Article 4 shall survive such termination.

                          ARTICLE 6 - OPTION TO ASSIGN

     At any time,  for and in  consideration  of the sum of One Dollar  ($1.00),
upon notice by MEMC,  ALBEMARLE  agrees to sell,  assign,  transfer and set over
unto MEMC the  entire  right,  title and  interest  of  ALBEMARLE  in and to the
Polysilicon Manufacturing Technology and the Polysilicon Patent Rights. Any such
assignment  shall have no effect on the  obligations  of Article 2 (licenses and
royalty payments) or the obligations of the Security  Agreement.  If an Event of
Default  occurs  and is  continuing,  ALBEMARLE  shall have the right to request
reassignment  to  ALBEMARLE  of all  rights  assigned  under this  Section,  and
promptly following such request,  MEMC and MEMC Pasadena shall cease any further
use of the  technology  and patent rights  assigned  under this section and will
also reassign all such patent and  technology  rights to ALBEMARLE and will also
execute such  assignment  documents in  recordable  form as are necessary in the
opinion of ALBEMARLE to record the reassignment.

                               ARTICLE 7 - NOTICES

     Any  notice  provided  for  herein  to be  given  in  writing  shall  be by
registered or certified mail addressed or by facsimile to the respective parties
at their addresses set forth below or at such other address or addresses as such
parties may from time to time designate in written notice to the other:

         ALBEMARLE:
                                    Albemarle Corporation
                                    451 Florida Street
                                    Baton Rouge, Louisiana 70801

                                    Attention:  Law Department

         MEMC:
                                    MEMC Electronic Materials, Inc.
                                    501 Pearl Drive (City of O'Fallon)
                                    Post Office Box 8
                                    St. Peters, Missouri 63376
                                    Phone:  (314) 279-5000
                                    Facsimile:  (314) 279-5158

                                    Attention: Vice President, Technology

                               ARTICLE 8 - GENERAL

     8.01 This  Agreement,  the  Technology  Purchase  Agreement,  the  Security
Agreement and the Asset  Purchase  Agreement set forth the entire  agreement and
understanding  of the parties  with  respect to the subject  matter  hereof.  No
representation,  promise,  inducement or statement of intention  relating to the
subject matter  contemplated  by this Agreement has been made by any party which
is not set forth in this Agreement or in the documents referred to herein.

     8.02 This  Agreement  may be  amended,  superseded  or  canceled  only by a
writing  specifically  referring  to  this  Agreement  and  signed  by the  duly
authorized representative of both parties.

     8.03 This  Agreement  shall be  governed  by the law of the State of Texas,
excluding the conflicts of laws provisions thereof to the extent such laws would
dictate application of the laws of another jurisdiction.

     8.04 The licenses  granted  pursuant to  paragraph  2.01 may be assigned or
transferred in any manner by MEMC without the consent of ALBEMARLE provided that
ALBEMARLE is notified of the  assignment  and the assignee  agrees to assume the
obligations  set forth in  paragraphs  2.03,  2.04,  2.05,  2.06 and  2.07.  The
licenses  granted pursuant to paragraph 2.02 may be assigned to the successor in
interest of MEMC in the business to which such licenses  pertain.  ALBEMARLE can
assign any or all of its rights  under this  Agreement  at any time  without the
consent of MEMC.

     8.05 For any matter which is designated in this  Agreement as being subject
to arbitration,  the parties shall, unless agreed otherwise, submit any disputes
for  settlement  and   determination  by  arbitration   under  the  then-current
Commercial Arbitration rules of the American Arbitration Association.  The panel
for such arbitration shall consist of three (3) arbitrators,  each of whom shall
be attorneys  with at least ten (10) years of  experience  before the Bar of any
state in commercial  matters.  The arbitration shall be held in Houston,  Texas.
The costs and expenses of the  arbitration  shall be shared as determined by the
arbitration panel. Discovery will be allowed both parties before the arbitration
hearing in accord  with the  Federal  Rules of Civil  Procedure  and the hearing
shall be conducted  consistent with the Federal Rules of Evidence.  The decision
and award of the panel shall be in writing  with  reasons  provided and shall be
final and  binding.  The award so  rendered  may be entered in any court  having
jurisdiction thereof confirmation and enforcement.

     8.06 Each party  agrees to execute or cause to be  executed  any  documents
reasonably  required to grant or  otherwise  perfect the rights  purported to be
granted herein, provided,  however, that neither party shall be required by this
section to enter into any  transaction  with a third  party.  Any  out-of-pocket
expenses incurred under this Section shall be reimbursed by the party requesting
such services.

     IN WITNESS  WHEREOF,  the parties by their duly authorized  representatives
have executed this Agreement on the date first written above.

                                  ALBEMARLE CORPORATION

                                  By:  /s/ Thomas Avant
                                     -------------------------------------------
                                  Title:  Senior Vice President, Finance


                                  MEMC ELECTRONIC MATERIALS, INC.

                                  By:  /s/ John DeLuca
                                     -------------------------------------------
                                  Title: Corporate Vice President


                                  MEMC PASADENA, INC.

                                  By:  /s/ John DeLuca
                                     -------------------------------------------
                                  Title: President

<PAGE>
<TABLE>
<CAPTION>
                                 SCHEDULE PAT-3
                            POLYSILICON PATENT RIGHTS
<S>               <C>         <C>      <C>              <C>                     <C>        <C>

CASE              COUNTRY     STATUS   APPN.            FILING                  PATENT     ISSUE
NUMBER                                 NUMBER           DATE                    NUMBER     DATE
- ---------------------------------------------------------------------------------------------------

EM-5522-A         USA         ISSUED    105.867         10/08/87                4.857.173  08/15/89
EM-5461-B         USA         ISSUED    059.562         06/08/87                4.806.317  02/21/89
EM-5461-D         USA         ISSUED    221.657         07/20/88                5.059.410  10/22/91
EM-5461-F         USA         ISSUED    426.846         10/26/89                5.202.099  04/13/93
EM-5461-H         USA         ISSUED    892.698         05/28/92                5.205.998  04/27/93
EM-5461           CANAD       GRANTED   514.570         07/24/86                1.323.339  10/19/93
EM-5461           JAPAN       GRANTED   181827/86       08/01/86                1859201    07/27/94
EM-5266           USA         ISSUED    796.190         11/08/85                4.691.866  09/08/87
EM-5266           JAPAN       GRANTED   162208/87       06/29/87                1794186    10/14/93
EM-5512-A         USA         ISSUED    004.116         01/16/87                4.820.587  04/11/89
EM-5512-B         USA         ISSUED    114.453         10/28/87                7.784.840  11/15/88
EM-5512-C         USA         ISSUED    290.584         12/27/88                4.883.687  11/28/89
EM-5512+          CANAD       GRANTED   544.103         98/10/87                1.294.755  01/28/92
EM-5512+          JAPAN       PUBLISHED 208030/87       08/21/87
EM-5512+          EPO         GRANTED   87-307464.5     08/24/87                0 258 027  08/19/92
EM-5512+          TAIWN       GRANTED   76-105096       08/29/87                NI 32354   09/01/89
EM-5512+          BELGM       GRANTED   87-307464-5     08/24/87                0258027    08/19/92
EM-5512+          FRANC       GRANTED   87-307464-5     08/24/87                0258027    08/19/92
EM-5512+          GERWE       GRANTED   87-307464-5     08/24/87                P3781223.8 08/19/92
EM-5512+          ITALY       GRANTED   87-307464-5     08/24/87                0258027    08/19/92
EM-5512+          UNIKN       GRANTED   87-307464-5     08/24/87                0258027    08/19/92
EM-5543           USA         ISSUED    088.145         08/21/87                4.748.052  05/31/88
EM-5543-A         USA         ISSUED    165.187         03/07/88                4.868.013  09/19/89
EM-5543           CANAD       GRANTED   575.224         08/19/88                1.303.816  06/23/92
EM-5543           JAPAN       PUBLISHED 204839/88       08/19/88
EM-5543           KORSO       PUBLISHED 10576/1988      08/20/88
EM-5543           TAIWN       GRANTED   77105585        08/12/88                35307      03/26/90
EM-5543           EPO         GRANTED   88-113076.9     08/11/88                0303973    01/27/93
EM-5543           BELGM       GRANTED   88-113076.9     08/11/88                0303973    01/27/93
EM-5543           FRANC       GRANTED   88-113076.9     08/11/88                0303973    01/27/93
EM-5543           GERWE       GRANTED   88-113076.9     08/11/88                P3877857.2 01/27/93
EM-5543           ITALY       GRANTED   88-113076.9     08/11/88                0303973    01/27/93
EM-5543           UNIKN       GRANTED   88-113076.9     08/11/88                0303973    01/27/93
EM-5704           USA         ISSUED    126.203         11/27/87                4.789.596  12/06/88
EM-5704-B         USA         ISSUED    212.286         06/27/88                4.952.425  08/28/90
EM-5704-C         USA         ISSUED    212.231         06/27/88                4.851.297  07/25/89
EM-5704           CANAD       GRANTED   584.183         11/25/88                1.309.308  10/27/92
EM-5704           JAPAN       PUBLISHED 296409/88       11/25/88
EM-5704           KORSO       PUBLISHED 88-15662        11/26/88
EM-5704           TAIWN       GRANTED   77108649        12/12/88                N147709    09/26/91
EM-5704           EPO         GRANTED   88-119601.8     11/24/88                0318008    06/22/94
EM-5704           EPO         PUBLISHED 92-105047.2     03/24/92
EM-5704           BELGM       GRANTED   88-119601.8     11/24/88                0318008    06/22/94
EM-5704           FRANC       GRANTED   88-119601.8     11/24/88                0318008    06/22/94
EM-5704           GERWE       GRANTED   88-119601.8     11/24/88                P38503573  06/22/94
EM-5704           ITALY       GRANTED   88-119601.8     11/24/88                0318008    06/22/94
EM-5704           UNIKN       GRANTED   88-119601.8     11/24/88                0318008    06/22/94
EM-5705-A         USA         ISSUED    791.882         11/13/91                5,242.671  09/07/93
EM-5705-B         USA         ISSUED    053.527         04/26/93                5.326.547  07/05/94
EM-5705           CANAD       PENDING   612.125         09/20/89
EM-5705           JAPAN       PUBLISHED 262279/89       10/09/89
EM-5705           KORSO       GRANTED   14577/1989      10/11/89                69463      01/05/94
EM-5705           EPO         GRANTED   89-1179624      09/28/89                0363742    06/09/93
EM-5705           FRANC       GRANTED   89-1179624      09/28/89                0363742    06/09/93
EM-5705           GERWE       GRANTED   89-117962.4     09/28/89                P68907001. 06/09/93
EM-5705           ITALY       GRANTED   89-117962.4     09/28/89                0363742    06/09/93
EM-5705           UNIKN       GRANTED   89-117962.4     09/28/89                0363742    06/09/93
EM-5712           USA         ISSUED    092,638         09/03/87                4,871,524  10/03/89
EM-5712           CANAD       GRANTED   574,472         08/11/88                1,289,454  09/24/91
EM-5712           JAPAN       PUBLISHED 218691/88       09/02/88
EM-5712           KORSO       PUBLISHED 11398/1988      09/03/88
EM-5712           TAIWN       GRANTED   77105745        08/19/88                NI43359    04/09/91
EM-5712           EPO         GRANTED   88-113730.1     08/23/88                0305867    06/26/91
EM-5712           BELGM       GRANTED   88-113730.1     08/23/88                0305867    06/26/91
EM-5712           FRANC       GRANTED   88-113730.1     08/23/88                0305867    06/26/91
EM-5712           GERWE       GRANTED   88-113730.1     08/23/88                P3863411.2 06/26/91
EM-5712           ITALY       GRANTED   88-113730.1     08/23/88                0305867    06/26/91
EM-5712           UNIKN       GRANTED   88-113730.1     08/23/88                0305867    06/26/91
EM-6074           USA         ISSUED    457,310         12/26/89                4,970,891  11/20/90
EM-6512           USA         ISSUED    865,972         04/09/92                5,260,538  11/09/93
EM-6535           USA         ISSUED    963,814         10/20/92                5,322,670  06/21/94
EM-6541           USA         ISSUED    963,661         10/20/92                5,405,658  04/11/95
EM-6541           JAPAN       PENDING   US93/09545      10/06/93
EM-6541           CANAD       PENDING   US93/09545      10/06/93
EM-6553           USA         ISSUED    957,319         10/06/92                5,358,603  10/25/94
EM-6536-B         USA         ISSUED    179,410         01/10/94                5,419,462  05/30/95
EM-6536           JAPAN       PENDING   246135/93       09/07/93
EM-6541-A         USA         PENDING   401,371         03/09/95
</TABLE>

<PAGE>

                                  Schedule 1-A

Name                                        Type

Ahmet Baysar                        Secrecy - Production high purity silicon in
                                    fluidized bed using microwaves

M. P. Dudukovic                     Consulting/Secrecy - Field of chemical
                                    engineering; discussions re fluid bed model
                                    for silane decomposition

M. P. Dudukovic                     Consulting - Multiphase reactors

M. P. Dudukovic                     Consulting - Silicon Crystal Pulling

M. P. Dudukovic                     Consulting/Secrecy - Field of chemical
                                    engineering; discussions re fluid bed model
                                    for silane decomposition

Donald C. Freshwater                Consulting/Secrecy - manufacturing poly-
                                    silicon

L. J. Giling                        Consulting - semiconductor materials

L. J. Giling                        Consulting - semiconductor materials

L. J. Giling                        Consulting - one year extension re MOCVD
                                    agreement

L. J. Giling                        Consulting - semiconductor materials and
                                    MOCVD

L. J. Giling                        Consulting - metal organic chemical vapor
                                    deposition (MOCVD) of III-V compounds

James L. Kuester                    Secrecy - Production high purity silicon in
                                    fluidized bed using microwaves

F. F. Lange                         Consulting - polysilicon and silicon
                                    carbide ceramics

David C. Look                       Consulting - semiconductor materials

Robert C. Wright                    Secrecy - covering consultations re Ethyl's
                                    polysilicon project

Frederick A. Zenz                   Consulting - Polysilicon manufacturing

<PAGE>

<TABLE>
<CAPTION>
                                 SCHEDULE PAT-2

                      SODIUM ALUMINUM HYDRIDE PATENT RIGHTS

<S>               <C>         <C>      <C>             <C>                      <C>         <C>

CASE              COUNTRY     STATUS   APPN.           FILING                   PATENT      ISSUE
NUMBER                                 NUMBER          DATE                     NUMBER      DATE
- ----------------------------------------------------------------------------------------------------

EM-5065           USA         ISSUED   496.474         05/20/83                 4.456.584   06/26/84
EM-5065           CANAD       GRANTED  452.120         04/16/84                 1.203.673   04/29/86
EM-5065           TAIWN       GRANTED  7.311.538       04/18/84                 NI-24629    07/25/86
EM-5065           EPO         GRANTED  84-105704.5     05/18/84                 0129079     11/11/87
EM-5065           FRANC       GRANTED  84-105704.5     05/18/84                 0129079     11/11/87
EM-5065           GERWE       GRANTED  84-105704.5     05/18/84                 P3467334.2  11/11/87
EM-5065           ITALY       GRANTED  84-105704.5     05/18/84                 0129079     11/11/87
EM-5065           HOLLN       GRANTED  84-105704.5     05/18/84                 0129079     11/11/87
EM-5065           UNIKN       GRANTED  84-105704.5     05/18/84                 0129079     11/11/87
EM-5129           USA         ISSUED   450.032         12/15/82                 4.528.176   07/09/85
EM-5129+          CANAD       GRANTED  443.198         12/13/83                 1.200.365   02/11/86
EM-5129+          TAIWN       GRANTED  73-10012        01/05/84                 NI-24621    07/25/86
EM-5129+          EPO         GRANTED  83-3076425      12/15/83                 0112175     03/29/89
EM-5129+          FRANC       GRANTED  83-3076425      12/15/83                 0112175     03/29/89
EM-5129+          GERWE       GRANTED  83-3076425      12/15/83                 P3379500.2  03/29/89
EM-5129+          ITALY       GRANTED  83-3076425      12/15/83                 0112175     03/29/89
EM-5129+          HOLLN       GRANTED  83-3076425      12/15/83                 0112175     03/29/89
EM-5129+          UNIKN       GRANTED  83-3076425      12/15/83                 0112175     03/29/89
EM-5159           USA         ISSUED   557.206         12/02/83                 4.512966    04/23/85
</TABLE>


                                                          CONFIDENTIAL TREATMENT
                                                              PREVIOUSLY GRANTED

                          TECHNOLOGY PURCHASE AGREEMENT

     THIS AGREEMENT,  made and entered into this 31st day of July,  1995, by and
between ALBEMARLE  CORPORATION,  a Virginia  corporation having an office at 451
Florida Street, Baton Rouge, Louisiana 70801 (hereinafter "ALBEMARLE"), and MEMC
ELECTRONIC  MATERIALS,  INC., a Delaware corporation having offices at 501 Pearl
Drive (City of O'Fallon), P. O. Box 8, St. Peters,  Missouri, 63376 (hereinafter
"MEMC"):

                                   WITNESSETH

     WHEREAS, ALBEMARLE has entered into an Asset Purchase Agreement to transfer
certain assets  relating to the  manufacture,  use and sale of  polysilicon  and
other electronic materials;

     WHEREAS,  the  Asset  Purchase  Agreement  provides  in  Section  3.1  that
ALBEMARLE will assign  technology and patent rights  relating to the manufacture
of silane and silicon tetrafluoride;

     NOW,  THEREFORE,  for and in  consideration  of the  mutual  covenants  and
agreements hereinafter set forth, the parties agree as follows:

                             ARTICLE 1 - DEFINITIONS

     1.01  "Affiliate"  shall  have the same  meaning  as set forth in the Asset
Purchase Agreement.

     1.02  "Closing  Date" shall have the same meaning as set forth in the Asset
Purchase Agreement.

     1.03 "Deemed  Quantity" shall have the meaning set forth in Section 2.03(a)
of the Seller Technology License Agreement.

     1.04 "Licensed Silane" means silane which is made by or with the use of, or
is used in  accordance  with an  invention  defined by one or more claims of the
Silane Patent Rights or is made using the Silane Manufacturing Technology.

     1.05 "MEMC Pasadena" shall mean MEMC Pasadena Inc., a Delaware  corporation
having offices at 3000 N. South Street, Pasadena, Texas, 77503.

     1.06 "Polysilicon  Manufacturing Technology" shall have the same meaning as
set forth in the Seller Technology License Agreement.

     1.07  "Polysilicon  Patent Rights" shall have the same meaning as set forth
in the Seller Technology License Agreement.

     1.08  "Polysilicon  Plant"  shall have the same meaning as set forth in the
Seller Technology License Agreement.

     1.09 "Silane Benchmark" shall mean [CONFIDENTIAL  MATERIAL HAS BEEN DELETED
AND  FILED  SEPARATELY  WITH SEC]  metric  tons of silane  unless  the  combined
capacity of the Polysilicon  Plant and any other polysilicon plant in connection
with which  ALBEMARLE has been  notified  pursuant to Section 2.03 of the Seller
Technology License Agreement exceeds [CONFIDENTIAL MATERIAL HAS BEEN DELETED AND
FILED  SEPARATELY  WITH SEC] metric tons of polysilicon per year, in which event
the "Silane  Benchmark"  shall mean the  multiplication  product of the combined
capacity of such plants and 1.5. For purposes of  illustration,  if the combined
capacity of such plants is  [CONFIDENTIAL  MATERIAL  HAS BEEN  DELETED AND FILED
SEPARATELY WITH SEC] metric tons, the Silane  Benchmark  shall be  [CONFIDENTIAL
MATERIAL HAS BEEN DELETED AND FILED  SEPARATELY  WITH SEC] metric tons of silane
[CONFIDENTIAL MATERIAL HAS BEEN DELETED AND FILED SEPARATELY WITH SEC].

     1.10 "Silane Manufacturing Technology" means all processes,  trade secrets,
inventions, discoveries, improvements, know-how, and manufacturing, engineering,
research,  development, and testing information and other technical information,
whether or not  patentable,  developed,  used,  currently  in use, or  currently
planned for use by ALBEMARLE in manufacturing silane by reacting sodium aluminum
hydride (NaA1H4) with silicon  tetrafluoride  (SiF4).  The Silane  Manufacturing
Technology  shall not  include  information  received  by  ALBEMARLE  from third
parties  under the secrecy  agreements  identified  in Schedule I-A (attached to
Exhibit I - Seller  Technology  License  Agreement)  unless  authorized  by such
agreements or such agreements are assigned to MEMC.

     1.11 "Silicon Tetrafluoride  Manufacturing Technology" means all processes,
trade   secrets,   inventions,   discoveries,    improvements,   know-how,   and
manufacturing,  engineering,  research, development, and testing information and
other  technical  information,  whether  or  not  patentable,  developed,  used,
currently  in  use,  or  currently  planned  for  use in  manufacturing  silicon
tetrafluoride  (SiF4) at the  facility  in Uncle Sam,  Louisiana,  to the extent
owned by ALBEMARLE,  which is prepared by reacting  fluorosilicic  acid (H2SiF6)
with sulfuric acid. The Silicon Tetrafluoride Manufacturing Technology shall not
include  information  received by ALBEMARLE from third parties under the secrecy
agreements identified in Schedule I-A (attached to Exhibit I - Seller Technology
License Agreement) unless disclosure to MEMC is authorized by such agreements or
such agreements are assigned to MEMC.

     1.12 "Silane  Patent  Rights"  means the patents  listed in Schedule  PAT-1
attached  hereto  and  made a  part  hereof,  including  all  continuations  and
continuation-in-part  patents,  divisionals,  reissues  and  reexamined  patents
derived from those listed.

     1.13 "Sodium Aluminum Hydride Manufacturing Technology" shall have the same
meaning as set forth in the Seller Technology License Agreement.

     1.14 "Sodium Aluminum Hydride Patent Rights" shall have the same meaning as
set forth in the Seller Technology License Agreement.

     1.15  "Security  Agreement"  shall  have the same  meaning  as in the Asset
Purchase Agreement.

     1.16  "Event of  Default"  shall have the same  meaning as in the  Security
Agreement.

                             ARTICLE 2 - ASSIGNMENT

     2.01 ALBEMARLE, for valuable consideration,  the receipt of which is hereby
acknowledged,  does hereby sell, assign, transfer, convey and set over unto MEMC
its  entire  right,  title  and  interest  in and to  the  Silane  Manufacturing
Technology and Silicon Tetrafluoride Manufacturing Technology, together with any
rights of action for unauthorized use of the Silane Manufacturing Technology and
Silicon  Tetrafluoride  Technology  occurring on or after the Closing Date,  the
same to be held and enjoyed by MEMC for its own use and behalf,  and for the use
and behalf of its  successors,  assigns or other  legal  representatives.  If an
Event of Default  occurs and is  continuing,  ALBEMARLE  shall have the right to
terminate  and revoke all rights  granted  pursuant  to this  Section  2.01 upon
written  notice to MEMC and MEMC  Pasadena  and,  in such  event,  MEMC and MEMC
Pasadena  shall  cease any  further  use of the  technology  and  patent  rights
assigned under this Section 2.01 and shall, at the request of ALBEMARLE,  convey
their rights in such  technology  and patent  rights back to ALBEMARLE and shall
execute such documents as may be necessary to record the reconveyed  rights, any
expenses  connected  with  such  reconveyance  and  recording  to  be  borne  by
ALBEMARLE.

     2.02 ALBEMARLE, for valuable consideration,  the receipt of which is hereby
acknowledged,  does hereby  sell,  assign,  transfer  and set over unto MEMC the
entire right, title and interest in and to the Silane Patent Rights, the same to
be held  and  enjoyed  by MEMC for its own use and  behalf,  and for the use and
behalf of its successors, assigns, or other legal representatives, to the end of
the terms thereof, together with all claims for profits and damages by reason of
infringement of said Patents  occurring on or after the Closing Date,  including
the right to sue for and collect  the same for its own use and  behalf,  and for
the use and behalf of its successors,  assigns, or other legal  representatives.
To enable MEMC to record its  interest  therein,  ALBEMARLE  shall  additionally
execute the recordable  assignment  which is attached hereto as Schedule R-A and
other recordable forms of the Assignment as MEMC may reasonably  request.  If an
Event of Default  occurs and is  continuing,  ALBEMARLE  shall have the right to
terminate  and revoke all rights  granted  pursuant  to this  Section  2.02 upon
written  notice to MEMC and MEMC  Pasadena  and,  in such  event,  MEMC and MEMC
Pasadena  shall  cease any  further  use of the  technology  and  patent  rights
assigned under this Section 2.02 and shall, at the request of ALBEMARLE,  convey
their rights in such  technology  and patent  rights back to ALBEMARLE and shall
execute such  documents as may be necessary to record the  reconveyance  rights,
any  expenses  connected  with such  reconveyance  and  recording to be borne by
ALBEMARLE.

     2.03 This Assignment does not include rights of action for unauthorized use
of the Silane  Manufacturing  Technology,  Silicon  Tetrafluoride  Manufacturing
Technology  and Silane Patent Rights  occurring  prior to the Closing Date which
rights are retained by the assignor hereunder.

     2.04  ALBEMARLE  makes no  representations  or  warranties  with respect to
technology and patent rights assigned  hereunder other than the  representations
and warranties set forth in Section 4.28 of the Asset Purchase Agreement.

     2.05 MEMC agrees to provide  ALBEMARLE  with prompt notice in writing prior
to or upon taking any of the following actions:

     (a)  in any calendar year  producing more than  [CONFIDENTIAL  MATERIAL HAS
          BEEN DELETED AND FILED  SEPARATELY  WITH SEC] metric tons of silane in
          the  Polysilicon  Plant (notice being  required in each such year when
          production  exceeds such quantity unless the capacity of the plant was
          expanded  and for which  notice was given  pursuant  to subpart (c) of
          this section 2.05),

     (b)  granting  any right to a third  party to use the Silane  Manufacturing
          Technology,  Silicon Tetrafluoride Manufacturing Technology and Silane
          Patent Rights to manufacture silane, or

     (c)  expanding the capacity of the  Polysilicon  Plant beyond that required
          to  produce   [CONFIDENTIAL   MATERIAL  HAS  BEEN  DELETED  AND  FILED
          SEPARATELY  WITH SEC] metric tons of silane,  or building a new silane
          plant to  manufacture  silane  using the Silane  Patent  Rights or the
          Silane Manufacturing Technology.

     2.06 In partial  consideration  for the  rights  granted  herein,  for each
kilogram of Licensed  Silane  which is  manufactured  in a calendar  year at the
Polysilicon Plant or another plant owned by MEMC, MEMC PASADENA or an Affiliate,
successor,  licensee or assign of any of them in excess of the Silane  Benchmark
and which is sold or  otherwise  transferred  by any of them  during the fifteen
(15) year period immediately following the Closing Date, Albemarle shall receive
a royalty of  [CONFIDENTIAL  MATERIAL HAS BEEN DELETED AND FILED SEPARATELY WITH
SEC]. The obligation to pay royalties to Albemarle pursuant to this Section 2.06
shall terminate fifteen years from the Closing Date. All royalties due Albemarle
pursuant to this Section 2.06 shall be paid to Albemarle within thirty (30) days
following  the  close  of  the  calendar  quarter  in  which  the  sale  of  the
royalty-bearing product occurred.

     2.07 If at any one or more times MEMC or MEMC  PASADENA (or either of their
Affiliate(s),  successor(s),  licensee(s)  or  assign(s))  transfers  any of the
Silane Patent Rights,  Silane Manufacturing  Technology or Silicon Tetrafluoride
Manufacturing  Technology  by way of license,  sale or  otherwise,  to any third
party within fifteen years of the Closing Date,  then ALBEMARLE shall be paid by
MEMC for each such  transaction  the cash  equivalent  of  one-half of any value
(whether  such  value is in terms of cash  compensation,  supply  or  barter  of
product or technology,  cross  licensing of technology or any other value of any
kind) received by or to be received by MEMC or MEMC PASADENA (or either of their
Affiliate(s),  successor(s),  licensee(s) or assign(s))  within fifteen years of
the Closing  Date for the  transfer or the  licensing  of such patent  rights or
technology, such one-half share (in its cash equivalent) to be paid to ALBEMARLE
within  thirty (30) days from the receipt by MEMC or MEMC PASADENA (or either of
their Affiliate(s), successor(s), licensee(s) or assign(s)) of such cash or such
other  value  (whether  such value is in terms of supply or barter of product or
technology,  cross  licensing  of  technology  or any other  value of any kind).
Notwithstanding  the  foregoing,  in the event such a third party pays value for
such a transfer of rights,  some of which is paid within  fifteen years and some
of which is paid more than fifteen years after the Closing  Date,  ALBEMARLE and
MEMC shall, upon the request of either party,  negotiate in good faith such that
ALBEMARLE  and  MEMC  shall  receive  a fair  and  equitable  portion  (in  cash
equivalent)  of the value  paid,  taking  into  account  the extent to which the
timing of the value  paid by the third  party  corresponds  to the timing of the
value received by the third party. In conducting such negotiations,  the parties
shall use in their  consideration the premise that ALBEMARLE is 50% owner of the
Silane Patent Rights, Silane Manufacturing  Technology and Silicon Tetrafluoride
Manufacturing  Technology and that it is contemplated by ALBEMARLE and MEMC that
the Polysilicon  Patent Rights,  Polysilicon  Manufacturing  Technology,  Sodium
Aluminum   Hydride  Patent  Rights,   Sodium  Aluminum   Hydride   Manufacturing
Technology,  Silane Patent Rights,  Silane Manufacturing  Technology and Silicon
Tetrafluoride  Manufacturing  Technology  were valued,  as of the Closing  Date,
[CONFIDENTIAL MATERIAL HAS BEEN DELETED AND FILED SEPARATELY WITH SEC]. MEMC and
ALBEMARLE  agree  to  use  such   contemplated   value  as  a  basis  for  their
negotiations,  provided,  however,  that if ALBEMARLE or MEMC can demonstrate in
good faith that such  contemplated  value is not the actual value at the time of
such  negotiations,  then  that  party  may  address  that  issue as part of the
negotiations. Failing agreement upon a mutually acceptable portion to be paid to
ALBEMARLE,  then MEMC and ALBEMARLE  shall submit the matter to  arbitration  in
accordance with the provisions of Section 4.04.

                               ARTICLE 3 - NOTICES

     Any  notice  provided  for  herein  to be  given  in  writing  shall  be by
registered or certified mail addressed or by facsimile to the respective parties
at their addresses set forth below or at such other address or addresses as such
parties may from time to time designate in written notice to the other:

         ALBEMARLE:
                                    Albemarle Corporation
                                    451 Florida Street
                                    Baton Rouge, Louisiana 70801
                                    Attention:  Law Department

         MEMC:
                                    MEMC Electronic Materials, Inc.
                                    501 Pearl Drive (City of O'Fallon)
                                    Post Office Box 8
                                    St. Peters, Missouri 63376
                                    Phone:  (314) 279-5000
                                    Facsimile:  (314) 279-5158

                                    Attention:  Vice President, Technology

                               ARTICLE 4 - GENERAL

     4.01 This Agreement,  the Seller Technology  License  Agreement,  the Asset
Purchase  Agreement  and the MEMC  Technology  License  Agreement  set forth the
entire  agreement and  understanding  of the parties with respect to the subject
matter hereof. No representation,  promise, inducement or statement of intention
relating to the subject matter  contemplated  by this Agreement has been made by
any party which is not set forth in this Agreement or in the documents  referred
to herein.

     4.02 This  Agreement  may be  amended,  superseded  or  canceled  only by a
writing  specifically  referring  to  this  Agreement  and  signed  by the  duly
authorized representative of both parties.

     4.03 This  Agreement  shall be  governed  by the law of the State of Texas,
excluding the conflicts of laws provisions thereof to the extent such laws would
dictate application of the laws of another jurisdiction.

     4.04 For any matter which is designated in this  Agreement as being subject
to arbitration,  the parties shall, unless agreed otherwise, submit any disputes
for  settlement  and   determination  by  arbitration   under  the  then-current
Commercial Arbitration rules of the American Arbitration Association.  The panel
for such arbitration shall consist of three (3) arbitrators,  each of whom shall
be attorneys  with at least ten (10) years of  experience  before the Bar of any
state in commercial  matters.  The arbitration shall be held in Houston,  Texas.
The costs and expenses of the  arbitration  shall be shared as determined by the
arbitration panel. Discovery will be allowed both parties before the arbitration
hearing in accord  with the  Federal  Rules of Civil  Procedure  and the hearing
shall be conducted  consistent with the Federal Rules of Evidence.  The decision
and award of the panel shall be in writing  with  reasons  provided and shall be
final and  binding.  The award so  rendered  may be entered in any court  having
jurisdiction thereof for confirmation and enforcement.

     4.05 Each party  agrees to execute or cause to be  executed  any  documents
reasonably  required to grant or  otherwise  perfect the rights  purported to be
granted herein, provided,  however, that neither party shall be required by this
section to enter into any  transaction  with a third  party.  Any  out-of-pocket
expenses incurred under this Section shall be reimbursed by the party requesting
such services.

     IN TESTIMONY WHEREOF,  MEMC and ALBEMARLE have caused this instrument to be
signed by their duly  authorized  representatives,  and ALBEMARLE has caused its
corporate seal to be hereto affixed on the date first written above.

                                        ALBEMARLE CORPORATION

                                        By:  /s/ Thomas Avant
                                        ----------------------------------------
                                        Title:  Senior Vice President, Finance

                                        MEMC ELECTRONIC MATERIALS, INC.

                                        By:  /s/ John DeLuca
                                        ----------------------------------------
                                        Title:  Corporate Vice President

<PAGE>

                                  Schedule 1-A

Name                                        Type

Ahmet Baysar                        Secrecy - Production high purity silicon in
                                            fluidized bed using microwaves

M. P. Dudukovic                     Consulting/Secrecy - Field of chemical
                                    engineering; discussions re fluid bed model
                                    for silane decomposition

M. P. Dudukovic                     Consulting - Multiphase reactors

M. P. Dudukovic                     Consulting - Silicon Crystal Pulling

M. P. Dudukovic                     Consulting/Secrecy - Field of chemical
                                    engineering; discussions re fluid bed model
                                    for silane decomposition

Donald C. Freshwater                Consulting/Secrecy - manufacturing poly-
                                    silicon

L. J. Giling                        Consulting - semiconductor materials

L. J. Giling                        Consulting - semiconductor materials

L. J. Giling                        Consulting - one year extension re MOCVD
                                    agreement

L. J. Giling                        Consulting - semiconductor materials and
                                    MOCVD

L. J. Giling                        Consulting - metal organic chemical vapor
                                    deposition (MOCVD) of III-V compounds

James L. Kuester                    Secrecy - Production high purity silicon in
                                    fluidized bed using microwaves

F. F. Lange                         Consulting - polysilicon and silicon
                                    carbide ceramics

David C. Look                       Consulting - semiconductor materials

Robert C. Wright                    Secrecy - covering consultations re Ethyl's
                                    polysilicon project

Frederick A. Zenz                   Consulting - Polysilicon manufacturing

<PAGE>

<TABLE>
<CAPTION>
                                 Schedule PAT -1

                              Silane Patent Rights
<S>             <C>            <C>          <C>               <C>               <C>              <C>
Case                                        Appn.             Filing            Patent           Issue
Number          Country        Status       Number            Date              Number           Date
- ---------------------------------------------------------------------------------------------------------

EM-4978           USA          Issued       353,491           03/01/82          4,395,389        07/26/83

EM-4978+          Italy        Granted      19839A/83         03/01/83          1,161,630        03/18/87

EM-4978+          Taiwan       Granted      7,210,785         03/16/83          NI-20745         10/13/84

EM-4978+          Japan        Granted      501471/83         02/28/83          1585827          10/31/90

EM-4978+          Gerwe        Granted      P3334297.0        02/28/83          3334297          11/30/89

EM-5155           USA          Issued       566,279           12/28/83          4,532,120        07/30/85

EM-5155           Canad        Granted      479,345           04/17/85          1,224,013        07/14/87

EM-5155           Japan        Granted      141426/85         06/28/85          1,531,608        11/24/89

EM-5155           EPO          Granted      85-302974.2       04/26/85          0198971          02/22/89

EM-5155           Austr        Granted      85-302974.2       04/26/85          0198971          02/22/89

EM-5155           Belgm        Granted      85-302974.2       04/26/85          0198971          02/22/89

EM-5155           Franc        Granted      85-302974.2       04/26/85          0198971          02/22/89

EM-5155           Gerwe        Granted      85-302974.2       04/26/85          P3668323.6       02/22/89

EM-5155           Italy        Granted      85-302974.2       04/26/85          0198971          02/22/89

EM-5155           Lxmb         Granted      85-302974.2       04/26/85          0198971          02/22/89

EM-5155           Holln        Granted      85-302974.2       04/26/85          0198971          02/22/89

EM-5155           Swedn        Granted      85-302974.2       04/26/85          0198971          02/22/89

EM-5155           Switz        Granted      85-302974.2       04/26/85          0198971          02/22/89

EM-5155           Unikn        Granted      85-302974.2       04/26/85          0198971          02/22/89

EM-5340           USA          Issued       609,812           05/14/84          4,554,141        11/19/85

EM-5128-A         USA          Issued       701,947           02/15/85          4,632,816        12/30/86

EM-5128           Canad        Granted      443,087           12/12/83          1,225,230        08/11/87

EM-5128           Taiwn        Granted      72-14531          12/29/83          NI-24699         07/31/86

EM-5128           EPO          Granted      83-307568.2       12/13/83          0112151          01/20/88

EM-5128           Japan        Granted      500492/84         12/12/83          1,518,057        09/07/89

EM-5128           Franc        Granted      83-307568.2       12/13/83          0112151          01/20/88

EM-5128           Gerwe        Granted      83-307568.2       12/13/83          P3375386.5       01/20/88

EM-5128           Italy        Granted      83-307568.2       12/13/83          0112151          01/20/88

EM-5128           Holln        Granted      83-307568.2       12/13/83          0112151          01/20/88

EM-5128           Unikn        Granted      83-307568.2       12/13/83          0112151          01/20/88

EM-5563           USA          Issued       075,367           07/20/87          4,847,061        07/11/89

EM-5563           Canad        Granted      572,426           07/19/88          1,303,817        06/23/92

EM-5563           Japan        Published    178294/88         07/19/88

EM-5563           Korso        Published    9081/1988         07/20/88

EM-5563           Taiwn        Granted      77105191          07/28/88          NI49794          11/25/92

EM-5563           EPO          Granted      88-111068.8       07/11/88          0300320          10/06/93

EM-5563           Belgm        Granted      88-111068.8       07/11/88          0300320          10/06/93

EM-5563           Franc        Granted      88-111068.8       07/11/88          0300320          10/06/93

EM-5563           Gerwe        Granted      88-111068.8       07/11/88          P3884702.7       10/06/93

EM-5563           Italy        Granted      88-111068.8       07/11/88          0300320          10/06/93

EM-5563           Unikn        Granted      88-111068.8       07/11/88          0300320          10/06/93

EM-5563-A         USA          Issued       296,484           01/12/89          5,075,092        12/24/91

EM-5563-A         Canad        Pending      2,007,271         01/05/90

EM-5563-A         Japan        Published    2660/90           01/11/90

EM-5563-A         Korso        Published    90-283            01/11/90

EM-5563-A         Taiwn        Granted      79100909          02/07/90          NI48341          06/01/91

EM-5563-A         EPO          Granted      89-124115.0       12/28/89          0377900          06/30/93

EM-5563-A         Franc        Granted      89-124115.0       12/28/89          0377900          06/30/93

EM-5563-A         Gerwe        Granted      89-124115.0       12/28/89          P68907401        06/30/92

EM-5563-A         Italy        Granted      89-124115.0       12/28/89          0377900          06/30/93

EM-5563-A         Unikn        Granted      89-124115.0       12/28/89          0377900          06/30/93

EM-6158-A         USA          Issued       723,785           07/01/91          5,206,004        04/27/93

EM-6517           USA          Issued       859,146           03/27/92          5,211,931        05/18/93

EM-6517           Japan        Pending      517442/93         11/22/93

EM-6157-A         USA          Issued       873,461           04/24/92          5,290,342        03/01/94

</TABLE>


                             GROUND LEASE AGREEMENT


     THIS GROUND  LEASE  AGREEMENT  ("Lease")  is made by and between  ALBEMARLE
CORPORATION, a Virginia corporation, with offices located at 451 Florida Street,
Baton Rouge,  Louisiana  70801  ("Lessor") and MEMC  PASADENA,  INC., a Delaware
corporation,  with offices located at 3000 N. South Street,  Pasadena,  TX 77503
("Lessee") and is effective as of this 31st day of July, 1995.

                              W I T N E S S E T H:

     WHEREAS:

     A. Lessor is the owner in fee simple of a parcel of real estate  containing
approximately  477 acres in Pasadena,  Texas, as more fully described in Exhibit
A-1 hereto, and as depicted on Exhibit A-2 hereto (the "Pasadena Plant").

     B.  Lessee  desires to lease from Lessor a portion of the  Pasadena  Plant,
which portion contains approximately 12.3 acres as described in Exhibit B-1, and
as depicted on Exhibit B-2 (collectively,  the "Land"). As used herein, the term
"Land" refers to the real property  only,  and not to any  improvements  thereon
from time to time during the term hereof.

     C.  Lessor  desires  to lease  the Land to  Lessee  pursuant  to the  terms
contained herein.

     D. Lessor and Lessee have entered into that certain Operating  Agreement of
even date  herewith  (the  "Operating  Agreement")  with respect to  Albemarle's
operation of the  Electronic  Materials  Facility  (as defined in the  Operating
Agreement),  such Operating Agreement to be for a period of up to five (5) years
after the  Closing  Date and a Utilities  and  Services  Agreement  of even date
herewith (the "Utilities and Services  Agreement") with respect to the supply of
Utilities  and Services  (as defined in the  Utilities  and Services  Agreement)
after termination of the Operating Agreement.

     NOW,  THEREFORE,  in  consideration  of the  premises and the rents and the
mutual  covenants  and  agreements  hereinafter  set forth  and  other  good and
valuable  consideration,   the  receipt  and  sufficiency  of  which  is  hereby
acknowledged, the parties hereto agree as follows:
 
                                      1
<PAGE>
                                   SECTION 1.

                  DEMISE, DESCRIPTION, USE OF THE LAND AND TERM

     1.1 Demise,  Description  and Use. Lessor leases to Lessee and Lessee rents
from Lessor,  for the purposes  described  below and for no other  purpose,  the
surface of the Land.  This Lease is a surface lease only,  and Lessee is granted
no rights of any kind to any oil and gas or other  mineral  contained  under the
surface of the Land,  such rights being expressly  reserved to Lessor.  The Land
may only be used as follows:

     A.   The Land may be used for the production of such granular  polysilicon,
          silane,  sodium aluminum hydride,  sodium aluminum fluoride and sodium
          ethyl silicate products and such other products as may be permitted by
          the Operating  Agreement  (collectively the "Permitted  Products") and
          Lessee's general  activities in association with the production of the
          Permitted Products.

     B.   In the event  Lessee  desires to use the Land for the  manufacture  of
          silicon  derivatives  (whether in commercial  quantities or not) other
          than the Permitted Products ("Other Products"), Lessee shall so advise
          Lessor  in  writing  not  less  than  three  (3)  months  prior to the
          anticipated  commencement  of  production of the Other  Products,  and
          Lessee  and Lessor  shall  meet an discuss in good faith the  proposed
          manufacture  of the Other  Products  by  Lessee on the Land.  Lessor's
          prior written  consent shall be required  prior to the  manufacture of
          Other  Products on the Land,  which consent shall not be  unreasonably
          withheld or delayed.

     C.   The Land may not be used for any other reason, nor may Lessee produce,
          manufacture,  store or  process at the Land any  products,  chemicals,
          substances  or  materials  of  any  kind  (except  as a raw  material,
          processing  material,  byproduct or waste of the products permitted to
          be produced  pursuant  to (A) or (B))  except  with the prior  written
          consent  of  Lessor,  which may or may not grant such a request in its
          sole discretion.

     1.2 Term.  The initial term of this Lease  ("Initial  Term") shall commence
upon the Commencement  Date (as hereinafter  defined) and shall terminate on the
day which is one day prior to the 35th  anniversary  of the  Commencement  Date,
unless sooner terminated as herein provided.  The Initial Term shall be extended
automatically  for four (4)  additional  five (5) year  periods  (an  "Extension
Term") unless Lessee shall have given Lessor  written  notice on  non-renewal at
least 12 months prior to the end of the Initial Term or any subsequent Extension
Term (the  Initial  Term and any  Extension  Term are  referred to as the "Lease
Term"). The last day of the Lease Term is called the Termination Date. If at any
time  during the term of this Lease and prior to the  Termination  Date,  Lessee
permanently ceases or suspends for a period in excess of two years the
 
                                      2
<PAGE>
production in commercial  quantities of Permitted Products and Other Products on
the Land,  then upon  written  notice by Lessor to Lessee,  this Lease  shall be
terminated  ("Early  Termination Date") and at the Early Termination Date all of
the  provisions  regarding  termination  of this Lease shall become  immediately
applicable,  and all of  Lessee's  right and  interest  in and to the Land shall
terminate.

     1.3  Commencement Date. The Commencement Date shall be the Closing Date as
defined in that certain Asset Purchase  Agreement among Lessee,  MEMC Electronic
Materials Company, Inc. and Lessor of even date herewith.

                                   SECTION 2.

                            RENT, TAXES AND UTILITIES

     2.1 Rent.  Lessee  covenants and agrees to pay Lessor the amount of One and
No/100ths Dollar ($1.00) per year of the Lease Term  representing rent ("Rent").
Rent shall be payable on the Commencement Date and on each annual anniversary of
the Commencement Date throughout the Lease Term.

     2.2 Taxes. During the Lease Term, Lessee shall pay when due all real estate
taxes,  installments of special  assessments,  sewer rental,  rates and charges,
transit taxes, state or local governmental  charges,  whether general,  special,
ordinary or extraordinary,  which shall now or hereafter be assessed against the
Land (collectively,  "Taxes").  Lessor shall be obligated to pay the portion, if
any, of any bill for Taxes  applicable  to the period prior to the  Commencement
Date and to the period after the expiration or earlier  termination of the Lease
Term.  In the event  that the Land is not  currently  separately  assessed  as a
distinct parcel of real property, then Lessor and Lessee shall cooperate in good
faith to take all reasonable  steps necessary to cause the Land to be separately
assessed  for  Taxes.  Until the Land has been  separately  assessed  for Taxes,
Lessor and Lessee agree to negotiate in good faith to determine an allocation of
Taxes  attributable to the Land based upon the relative fair market value of the
Land as compared to the larger parcel of real  property on which the  applicable
tax bill  pertains.  In the event that Lessor and Lessee fail to agree upon such
allocation,  then the matter shall be resolved by arbitration in accordance with
the provisions of Article 28.04 of the Operating Agreement. Upon written request
of Lessor,  Lessee shall deliver to Lessor proof of payment of all Taxes. In the
event that Lessee  fails to pay any such Taxes when due,  Lessor may,  but shall
not be obligated to, pay such Taxes,  in which event,  Lessee shall be obligated
to immediately  reimburse Lessor for such sums paid by Lessor,  plus interest on
such sums from the date paid by Lessor until payment is made by Lessee to Lessor
at a rate equal to five (5%)  percent per annum above the Prime Rate,  or at the
maximum  legal rate,  whichever is lower.  For purposes of this Lease,  the term
"Prime Rate" shall mean the base rate of interest  charged on corporate loans at
large U.S. money center commercial banks as reported in The Wall Street Journal,
Midwest Edition, under the heading "Money Rates."

                                        3
<PAGE>                                      
     2.3 Contest of Taxes.  In the event that Lessee  makes a request of Lessor,
Lessor may, at Lessee's expense,  contest by legal proceeding,  or in such other
manner as may be reasonably  specified by Lessee,  the validity or amount of any
Taxes or the assessed value of the Land. In the event that Lessor fails to do so
after a request  has been made by Lessee,  then  Lessee  shall have the right to
contest  by legal  proceeding,  or in such  other  manner  as may be  reasonably
determined by Lessee,  the validity or amount of any Taxes or the assessed value
of the Land.  Lessee may conduct said contest in name of Lessor,  if  necessary.
Prior to any such  contest by legal  proceeding  or other  action,  Lessee shall
deposit with Lessor an amount equal to the Taxes levied by the taxing authority.
If the contest by legal  proceeding or other action is  successful,  then Lessor
shall immediately return to Lessee the portion of such deposit which is not owed
as Taxes.  Lessor shall, within fifteen (15) days after learning of any increase
of  change in the  assessment  or the rate of Taxes,  advise  Lessee in  writing
thereof  and Lessee  shall,  within ten (10) days of the  receipt of said notice
from Lessor, advise Lessor in writing in the event Lessee elects to contest said
change.  Lessor agrees that it will,  at Lessee's  expense,  provide  reasonable
cooperation to Lessee in connection with such contest.  Any contest conducted by
Lessee  hereunder  shall be at  Lessee's  expense,  and,  in the event  that any
penalties,  interest or late charges become payable with respect to the Taxes as
a result of such contest,  Lessee shall pay the same or shall  reimburse  Lessor
therefor.

     2.4  Utilities.  Lessee  shall  be  responsible  for  the  payment  of  all
utilities,  including,  without  limitation,  water, gas and electricity for the
Land.  Notwithstanding the above, in the event of any conflict between the terms
of this paragraph and the terms of the Operating  Agreement or the Utilities and
Services  Agreement,  the terms of said  Operating  Agreement or  Utilities  and
Services Agreement shall control.

     2.5 Triple Net Lease.  Except as otherwise  specifically  provided  herein,
this Lease is intended by the parties to be  interpreted  for all  purposes as a
triple net lease.

                                   SECTION 3.

                      TITLE, QUIET ENJOYMENT AND POSSESSION

     3.1 Title and Quiet  Enjoyment.  Lessor  represents  and warrants to Lessee
that Lessor has good and  marketable  legal title to the Land,  subject to those
liens, mortgage, charges, pledges, easements,  encumbrances and imperfections of
title of record.  Lessor has full power and  authority to enter into and perform
this Lease, and Lessee shall have quiet and peaceable  possession of the demised
premises during the Lease Term. This Lease is subject to existing  easements and
rights of way, if any, including pipeline(s), utilities (including firewater and
other connections of Lessor), and any government restrictions.

     3.2 Possession.  Lessor covenants that it will deliver to Lessee possession
of the Land at the Commencement  Date. No rents or other charges shall accrue or
be payable by Lessee during any period prior to such tender.

                                        4
<PAGE>                                      

                                   SECTION 4.

                      CONDITION AND IMPROVEMENT OF PREMISES

     4.1  Condition.  Other than the  warranties of title,  quiet  enjoyment and
possession as provided  above,  or as otherwise set forth in the Asset  Purchase
Agreement,  the Operating  Agreement or the  Utilities  and Services  Agreement,
Lessor provides the Land to Lessee "as-is" and "where-is",  without any warranty
of any kind,  including  any  warranty  of  merchantability  or fitness  for any
particular purpose.

     4.2  Compliance.  During the term of this Lease,  each of Lessor and Lessee
shall  comply  with  all  applicable   statutes,   ordinances,   rules,  orders,
regulations and  requirements  (including but not limited to matters relating to
the environment) of the Federal,  State and municipal  governments and of any of
their  departments or bureaus  (hereinafter  "Laws")  affecting the Land. Lessee
shall at all times  operate and  maintain the Land so as not to cause a nuisance
or be a hazard to safety or the environment.  Lessee agrees to defend, indemnify
and hold  Lessor,  its  successor  and  assigns and their  officers,  directors,
employees and representatives from and against any non-compliance by Lessee with
Laws and Lessee's obligations under this Section.

     4.3 Improvements.  Lessee shall have the right at any time during the Lease
Term, at its sole cost and expense,  to demolish,  rebuild,  repair or construct
any  Improvement(s)  (as  hereinafter  defined)  on  the  Land  as  well  as any
preliminary work required to effect such Improvements,  provided that same is in
compliance with all Laws and the terms of this Lease. During the Lease Term, all
Improvements shall be deemed the property of Lessee. Upon the termination of the
Lease Term, Lessee shall, unless Lessor directs otherwise,  remove from the Land
all above  ground  structures,  improvements  and  foundations,  whether  or not
installed,  erected or placed on the Land by Lessee.  If Lessee  fails to remove
all such  structures,  improvements  and  foundations  or other  property  which
currently exist or which it may have installed, erected or placed upon the Land,
Lessor may remove  same at  Lessee's  cost and  expense or retain  such  without
compensation  to Lessee.  For purposes of this Lease,  an  "Improvement"  is any
valuable  addition or  amelioration  to the Land  intended to enhance its value,
beauty,  utility  or to  adapt it for a  specific  purpose,  including,  but not
limited to, structures,  streets, sidewalks,  sewers, utilities and landscaping,
both above ground and below.

     4.4 Easements.

     4.4.1 Reciprocal Easement. Lessor and Lessee hereby covenant and agree that
they will enter into a legally valid,  binding and recorded  reciprocal easement
agreement  (substantially  in the form attached hereto as Exhibit C) whereby the
parties will grant to each other easements for pedestrians and vehicular  access
over the Pasadena Plant and the Land  respectively  for the parties'  respective
licensees'  and the parties'  invitees'  mutual use and benefit.  Said  easement
shall be entered into as of the Commencement Date.

                                       5
<PAGE> 
        4.4.2 Lessee Utility Easement. Lessee covenants and agrees that, at the
request of Lessor,  Lessee shall  promptly  execute and deliver a legally valid,
binding and recordable  easement  agreement (which shall be for the full term of
the Lease (or such longer  period as Lessee shall have an interest in the Land))
(substantially in the form attached hereto as Exhibit D) whereby Lessee provides
one or more easements to Lessor over, across, upon, in or under, as the case may
be, a certain  portion or  portions  of the Land to be agreed upon in good faith
between  the parties to enable  Lessor to obtain,  install,  operate,  maintain,
repair and replace utilities,  including, without limitation,  electricity, gas,
telephone,  sewage  and water  from the  applicable  providers  to  service  the
Pasadena Plant,  and to repair fences,  it being the intent that the location of
such easements shall be in the most  convenient  place for the provision of such
utilities  to the  extent  reasonably  practicable,  while  providing  the least
inconvenience  to Lessee.  Lessee  shall  also  provide  Lessor,  its agents and
contractors,  access  across  other parts of the Land for the purpose of ingress
and egress to said easement locations.

         4.4.3 Lessor Utility Easement. Lessor covenants and agrees that, at the
request of Lessee,  Lessor shall  promptly  execute and deliver a legally valid,
binding and recordable  easement  agreement (which shall be for the full term of
the Lease (or such longer  period as Lessee shall have an interest in the Land))
(substantially in the form attached hereto as Exhibit D) whereby Lessor provides
one or more easements to Lessee over, across, upon, in or under, as the case may
be, a certain  portion or  portions of the  Pasadena  Plant to be agreed upon in
good faith  between the parties to enable  Lessee to obtain,  install,  operate,
maintain,   repair  and  replace  utilities,   including,   without  limitation,
electricity,  gas, telephone,  sewage and water from the applicable providers to
service the Land, and to repair fences, it being the intent that the location of
such easements shall be in the most  convenient  place for the provision of such
utilities  to the  extent  reasonably  practicable,  while  providing  the least
inconvenience  to Lessor.  Lessor  shall  also  provide  Lessee,  its agents and
contractors,  access across other parts of the Pasadena Plant for the purpose of
ingress and egress to said easement locations.

     4.4.4 Compliance with Rules and  Regulations.  While on the property of the
other  party,  Lessor  and  Lessee  agree to cause  all  persons  utilizing  any
easements  (including,  without  limitation,  Lessor's and  Lessee's  employees,
customers,  invitees and contractors) to obey fully all rules and regulations of
the other party,  including but not limited to rules and regulations relating to
safety, security and vehicle operation.

     4.5 Fencing. Lessee, at its expense, will at Lessor's request erect a fence
along the  perimeter  of the Land,  and as  described in and depicted on Exhibit
B-2. Lessor shall permit Lessee and its agents and  contractors  access over the
Pasadena  Plant to the extent  reasonably  necessary or convenient in connection
with the ongoing  maintenance,  repair and replacement of said fence.  Except as
otherwise  agreed to by the  parties in  writing,  Lessee  shall at all times be
responsible  for  furnishing its own security for its personnel and property and
Lessor shall not provide any security services to Lessee.

                                       6
<PAGE> 
                                  SECTION 5.

                  NO ENCUMBRANCE OF LESSEE'S LEASEHOLD INTEREST

     5.1  Lessee may not  encumber  by  mortgage,  deed of trust or  otherwise,
Lessee's leasehold interest and estate in the Land.

                                   SECTION 6.

                            ASSIGNMENT AND SUBLETTING

     6.1  Assignment.  Lessee shall have the right to assign this Lease together
with all of the rights of the Lessee  hereunder  only to a successor in interest
to substantially all of Lessee's polysilicon  manufacturing business carried out
on the Land.  Otherwise,  Lessee may not assign  this  Lease  without  the prior
written consent of Lessor,  and any attempted  assignment will be null and void.
Lessee  shall give Lessor  notice of any intended  assignment  of this Lease not
less  than  thirty  (30)  days  prior  to the  proposed  effective  date of such
assignment. In the event that any proposed assignee of Lessee is a competitor of
products  manufactured by Lessor,  Ethyl Corporation or the successors to either
of their  products  produced at the Pasadena  Plant,  or becomes an affiliate or
merged with a competitor of products  manufactured by Lessor,  Ethyl Corporation
or the  successors to either of their products  produced at the Pasadena  Plant,
then,  as a condition of such  assignment or  subleasing,  Lessor shall have the
right to require such assignee or sublessee and its  representatives to agree to
reasonable  obligations  of  confidentiality  and  non-use  with  respect to any
proprietary  information  of Lessor,  Ethyl  Corporation,  or the  successors to
either of their products  produced at the Pasadena Plant, as the case may be, of
which it or they may become aware of at the Pasadena Plant.

     6.2 Sublet.  Lessee shall not sublet the Land,  this Lease,  or any portion
thereof, at any time, without the prior written consent of Lessor.

     6.3 Lessor  Restriction.  Lessor is hereby  prohibited  from assigning this
Lease or agreeing to assign this Lease to or with any other party (other than to
any  successor  in  interest  to Lessor's  equitable  interest in the Land,  and
pursuant to which  assignment  shall be mandatory upon Lessor,  and which Lessor
shall obtain an  assumption,  in writing,  from such  successor of the terms and
provisions  of this  Lease) and any  attempt  to do so shall be deemed  null and
void.  In the event that any  proposed  assignee  of Lessor is a  competitor  of
products  manufactured  by Lessee or its  successor  on the Land,  or becomes an
affiliate of or merged with a competitor of products  manufactured  by Lessee or
its  successor  on  the  Land,  then,  as a  condition  of  such  assignment  or
subleasing,  Lessee shall have the right to require  such  assignee or sublessee
and its  representatives  to agree to reasonable  obligations of confidentiality
and  non-use  with  respect  to any  proprietary  information  of  Lessee or its
successor  for products  produced on the Land, or of which it or they may become
aware of at the Land.

                                       7
<PAGE>
                                   SECTION 7.

               DAMAGE AND DESTRUCTION, INDEMNIFICATION, INSURANCE

     7.1 Damage or Destruction of Improvements.  If at any time during the Lease
Term  Improvements  which are erected  upon the Land are  damaged or  destroyed,
Lessee  shall not be  obligated  to repair or replace any  damaged or  destroyed
Improvements.

     7.2  Cooperation.  Lessor and Lessee agree to cooperate  with each other in
good faith to develop  methods to minimize  exposure for claims from  employees,
subcontractors and invitees.

     7.3 Liability  Insurance.  Lessor and Lessee shall each (at their own cost)
obtain comprehensive general liability coverage of not less than $5,000,000,  as
part  of  its  insurance   coverage  for  the  Pasadena   Plant  and  the  Land,
respectively,  and shall  name the other  party as an  additional  insured.  The
parties  shall  provide each other with  certification  of such  insurance  upon
written  request.  This minimum  coverage shall be adjusted for inflation during
the Lease Term.

     7.4  Waiver of  Subrogation.  Whenever  any loss,  cost,  damage or expense
resulting  from public  liability or any other casualty is incurred by either of
the parties to this Lease in connection  with the Pasadena Plant or the Land and
such party is then covered in whole or in part by insurance with respect to such
loss,  cost,  damage or expense,  said covered  party hereby  releases the other
party of any and all  liability to the extent of any amount  recovered by reason
of such  insurance and waives any right of  subrogation,  which might  otherwise
exist in or accrue to any person on account thereof,  provided that such release
of liability  and waiver of right of  subrogation  shall not be operative in any
case where the effect thereof is to invalidate such insurance coverage.

                                   SECTION 8.

                             REPAIRS AND MAINTENANCE

     8.1  Maintenance  and  Repair.  Except as  provided  in Section  7.1 to the
contrary,  during  the  term of this  Lease,  the  Land  and all  buildings  and
Improvements  thereon shall be kept by Lessee in a safe,  clean and serviceable,
and  environmentally  sound  condition  and  in a  good  state  of  repair  (all
maintenance  is to be at Lessee's sole cost and expense).  Except as provided in
Section 7.1 to the  contrary,  Lessee will keep the Land,  the buildings and the
Improvements  (including sidewalks,  roads and driveways) in general conformance
with the  condition  of the  Pasadena  Plant.  Except  to the  extent  otherwise
provided  herein or in any other  agreement  between  Lessor and Lessee,  Lessor
shall  not  be  required  to  maintain,  repair  or  rebuild,  or  to  make  any
alterations,  replacements  or  renewals  of any  nature or  description  to the
Improvements,  whether ordinary or extraordinary,  structural or non-structural,
foreseen or unforeseen.

                                       9
<PAGE>
     8.2 No  Mechanic's  Liens.  Lessee  shall  not  permit  any  mechanic's  or
materialmen's liens (herein  collectively called "mechanic's liens") to be filed
against the Land by reason of  services or material  supplied or claimed to have
been supplied.  If any such mechanic's liens shall at any time be filed,  Lessee
shall cause the same to be  discharged  of record  within thirty (30) days after
the recording  thereof or  diligently  contest same and if judgment is rendered,
pay such judgment.  If Lessee shall fail to discharge such mechanic's liens upon
such judgment, then, in addition to any other right or remedy, Lessor party may,
but  shall  not  be  obligated  to,   discharge  the  lien,   after   reasonable
investigation  as to its validity.  All amounts expended by Lessor to contest or
discharge  such lien, or both,  shall be subject to immediate  reimbursement  by
Lessee on demand,  and shall be subject  to  interest  until paid at the rate of
five percent (5%) plus the Prime Rate, or the maximum legal rate,  whichever is
less.

                                   SECTION 9.

                                  CONDEMNATION

     9.1 Taking of Whole. If the whole of the Land shall be taken,  condemned or
acquired by deed in lieu thereof by any competent authority or if such a portion
of the Land shall be so taken or acquired  that as a result  thereof the balance
cannot, in Lessee's  opinion,  be used for Lessee's intended use, then in either
of such  events,  the Lease Term shall  terminate  upon,  at Lessee's  election,
either (i)  commencement of the condemnation  action or notice thereof,  or (ii)
delivery of possession to the condemning  authority.  In either case, all rental
and other sums payable shall hereunder be prorated to such date.

     9.2 Partial Taking. If only a part of the Land shall be so taken, condemned
or  acquired,  and as a result  thereof the balance of the Land can, in Lessee's
opinion, be used for Lessee's intended use, then this Lease shall not terminate,
and  rental to be paid from the date of such  taking  until the end of the Lease
Term shall be reduced in proportion to the square  footage  taken,  condemned or
acquired.

     9.3 Apportionment. In the event of the occurrence of either a taking of the
whole pursuant to Section 9.1 or a partial taking  pursuant to Section 9.2, then
any award from the condemning authority for the taking of the Land shall be paid
to Lessor and any awarded from the  condemning  authority  for the taking of the
Improvements shall be paid to Lessee.

                                   SECTION 10.

                              REMEDIES FOR DEFAULT

     10.1 Lessor's  Remedies.  If the Rent or any other  payments due hereunder,
including Taxes, is not paid when same becomes due and payable and such monetary
default  shall  continue for thirty (30) days or more (after  written  notice of
such  default by  Lessor),  or if  default  shall be made in the  observance  or
performance  of any of the other mutual  covenants or  conditions  in this Lease
which  Lessee is required to observe  and perform and such  nonmonetary  default

                                       9
<PAGE>
shall continue for sixty (60) days or more after written notice to Lessee (under
such default cannot be cured within said 60 days and Lessee  diligently  pursues
said cure),  Lessor may treat the occurrence of any one or more of the foregoing
events as a breach of this Lease,  and  thereupon  at its option  may,  with any
additional  notice required by law, Lessor may terminate this Lease and the term
created hereby, in which event Lessee shall surrender the Land and shall, unless
Lessor  directs  otherwise,  remove  all  of  Lessee's  equipment,  inventories,
supplies and other personal property within a reasonable time period.

     10.2 Lessor's and Lessee's  Remedies.  Lessor and Lessee shall have any and
all remedies  afforded by law and equity against the other,  including  specific
performance and offset,  in the event that Lessor or Lessee, as the case may be,
defaults under any of the covenants,  conditions or agreements contained in this
Lease.

     10.3   Expenses   of   Enforcement.   Anything   herein  to  the   contrary
notwithstanding,  with  regard to any  controversy  between  Lessor  and  Lessee
respecting  this Lease or acts or omissions done or suffered to be done pursuant
hereto, or any claims or action arising  thereunder,  the prevailing party shall
be  entitled  to  recover,  in  addition  to all  damages  and costs which would
otherwise be recoverable,  all reasonable  expenses,  including fees of counsel,
incurred by such prevailing party in connection with such controversy,  claim or
action,  irrespective  of whether  such  claim is  liquidated,  or whether  such
controversy, claim or action is prosecuted to a final judgment.

     10.4 Right of  Parties to  Perform.  If Lessee,  as the case may be,  shall
default in the performance of any covenant on its part to be performed herein or
shall  breach any  representation  or  warranty  given  herein and shall fail to
remedy such default or breach with  reasonable  dispatch  after the Lessor shall
have notified Lessee in writing of such default or breach, Lessor, without being
obligated to do so and without thereby waiving such default or breach, may taken
such action as is  reasonable  and  appropriate  to cure such default or breach.
Lessor's reasonable  expenditures and costs in connection  therewith shall be at
Lessee's expense and shall be payable as additional rent within thirty (30) days
after demand therefor is made by Lessor.

     10.5 Remedies Cumulative.  All remedies herein conferred upon parties shall
be cumulative and no one remedy shall be exclusive of any other remedy conferred
herein or by law.

                                   SECTION 11.

                                  MISCELLANEOUS

     11.1 Entire  Agreement.  This Lease and the  Exhibits  attached  hereto and
forming  a part  hereof  set  forth  all the  covenants,  promises,  agreements,

                                       10
<PAGE>
conditions and understandings between Lessor and Lessee concerning the Land, and
there are no covenants,  promises,  agreements,  conditions  or  understandings,
either oral or written,  between them other than as herein set forth,  except as
herein  otherwise  provided.  No  subsequent  alteration,  amendment,  change or
addition to the Lease shall be binding upon Lessor or Lessee  unless  reduced to
writing and signed by them.

     11.2  Binding  Effect.  The terms,  agreements,  covenants  and  conditions
contained  in this Lease are binding  upon and shall inure to the benefit of the
parties hereto and their respective successors and assigns.

     11.4 Notices. Any notice,  demand, request or other instrument which may be
or is required to be given under this Lease shall be in writing and be delivered
in person,  sent by private  (including U.S. Postage Service) overnight courier,
postage prepaid and shall be addressed as follows:

         If to Lessor:

         Albemarle Corporation
         451 Florida Street
         Baton Rouge, Louisiana 70801
         Attention:  Vice President, Manufacturing

         with a copy to:

         Albemarle Corporation
         451 Florida Street
         Baton Rouge, Louisiana 70801
         Attention:  Law Department

         If to Lessee:

         MEMC Pasadena, Inc.
         c/o MEMC Electronic Materials, Inc.
         501 Pearl Drive, P.O. Box 8
         St. Peters, MO 63376
         Attention:  President-MEMC Pasadena, Inc.

         copy to:

         MEMC Pasadena Site Manager
         3000 N. South Street
         Pasadena, TX
         Attention:  MEMC Site Coordinator

or at such other address as Lessee or Lessor shall  designate by written  notice

                                       11
<PAGE>
to the other.  Any such notice,  demand,  request or other  instrument  shall be
deemed to have been given in the case of personal  delivery or overnight courier
on the date of actual receipt of delivery or refusal of delivery and in the case
of United  States  certified  mail three (3) days after  deposit with the United
States Postal Service.

     11.4 Captions and Section Numbers. The captions,  section numbers,  article
numbers,  and table of  contents  appearing  in or  attached  to this  Lease are
inserted only as a matter of convenience and in no way define,  limit,  construe
or describe  the scope or intent of such  sections or articles of this Lease nor
in any way affect this Lease.

     11.5 Partial  Invalidity.  If any term, covenant or condition of this Lease
or the application  thereof to any person or circumstance  shall, to any extent,
be invalid or unenforceable,  the remainder of this Lease, or the application of
such term,  covenant or condition to persons or circumstances,  other than those
as to which it is held invalid or  unenforceable,  shall not be affected thereby
and each term,  covenant or  condition of this Lease shall be valid and enforced
to the fullest extent permitted by law.

     11.6  Insolvency.  If Lessee or Guarantor  (as defined in Section 12 below)
makes an  assignment  for the  benefit  of its  creditor(s),  or  attachment  or
garnishment  proceedings  are  commenced,  or a receiver is  appointed  over any
property of Lessee or Guarantor,  or  proceedings  are  instituted by or against
Lessee or Guarantor  hereto under the Bankruptcy Code, then Lessor may terminate
this  Agreement  effective  upon  the  date  of such  assignment,  commencement,
appointment of institution or proceedings.

     11.7 Construction of Lease. The language in all parts of Lease shall in all
cases be construed as a whole according to its fair meaning.

     11.8  Governing  Law.  This Lease shall be  construed  and  governed by the
internal laws and decisions of the State of Texas.

     11.9 Memorandum.  Lessee has the right to record a memorandum of this Lease
with a  legal  description  of the  Land  with  the  county  recorder  or  other
applicable  governmental  authority  with  reference  to the Lease and any other
terms Lessee so determines.

     11.10 Option to  Terminate.  Lessee shall have the right to terminate  this
Lease upon (i)  delivering  written notice to Lessor of its intent to do so, and
(ii) paying to Lessor a termination  fee equal to the amount of Rent due for the
remainder  of the Lease Term and any  payments  then due or  accrued,  including
Taxes, up to the date of termination.  Lessee shall be relieved from any further
liability for rent from the effective  date of  termination,  provided that this
will not release  Lessee from liability for  occurrences  prior to the effective
date of termination,  Lessee's obligations with respect to return of the Land to
Lessor in the  condition  specified  by this Lease or Lessee's  violation of any
laws or governmental  regulations  (including without limitation,  environmental
laws and regulations) during the Lease.
  
                                     12
<PAGE>
                                   SECTION 12.

                                    GUARANTY

     12.1 Guaranty.  MEMC Electronic Materials,  Inc., parent company of Lessor,
absolutely,  unconditionally  and irrevocably the obligations of Lessor pursuant
to this Lease, and as such, is a contracting party to this Lease.

LESSOR:                                      LESSEE:
ALBEMARLE CORPORATION                        MEMC PASADENA, INC.



By:  /s/ Thomas A. Aron                   By: /s/  John De Luca
   -------------------------------              ------------------------------
Its:  Senior Vice President                  Its:  President




Subscribed before me this 31st day          Subscribed before me this 31st day 
of July 1995                                of July 1995                    

/s/ Laura Pearson                           /s/ Laura Pearson
- ----------------------------------          ----------------------------------

Notary Public                                Notary Public
My commission expires: 6/20/96               My commission expires: 6/20/96
                       -----------                                ------------

                                             MEMC ELECTRONIC MATERIALS, INC.



                                             By: /s/ John De Luca
                                                -------------------------------
                                             Its: 

                                             Subscribed before me this 31st day
                                             of July 1995
                                                
                                             /s/ Laura Pearson                
                                             ---------------------------------- 
                                                                             
                                             Notary Public                     
                                             My commission expires: 6/20/96    
                                                                    ------------
                                       13
<PAGE>                                         
                                                                     EXHIBIT A-1

                           METES AND BOUND DESCRIPTION
                             477.4217 ACRES OF LAND
                                 LOCATED IN THE
                        THOMAS EARLE SURVEY, A-18 AND THE
                           JAMES SEYMOUR SURVEY, A-698
                              HARRIS COUNTY, TEXAS

     BEING 477.4217  acres of land located in the Thomas Earle Survey,  Abstract
No. 18 and the James Seymour  Survey,  Abstract No. 698,  Harris County,  Texas,
same  being a portion of that  certain  682.3105  acre tract  (called to contain
683.1599 acres)  comprised of five tracts  conveyed to Ethyl  Corporation by the
following instruments:

     1)   397 acres by instrument  recorded in Volume 2176, Page 283 of the Deed
          Records of Harris County, Texas;

     2)   Residue of 7.283 acres (Ethyl Road,  an 80 foot wide private  road) by
          instrument recorded in Volume 2176, Page 287 of said Deed Records;

     3)   25.317 acres comprised of Parcel 1 containing  24.235 acres and Parcel
          2 containing  1.082 acres by instrument  recorded under County Clerk's
          File  (C.C.F.)  No.  G466418 of the  Official  Public  Records of Real
          Property, Harris County, Texas (O.P.R.R.P.H.C.T.);

     4)   181.536 acres by instrument  recorded under C.C.F.  No. K602614 of the
          O.P.R.R.P.H.C.T.;

     5)   72.039 acres by instrument  recorded  under C.C.F.  No. M789119 of the
          O.P.R.R.P.H.C.T.;

said  477.4217  acre  tract  being   comprised  of  two  separate   tracts  more
particularly described by metes and bounds as follows:

                                     TRACT A

COMMENCING at said City of Houston Monument No. 5856-1603;

THENCE N 02(degree) 32' 14" W, a distance of 1505.42 feet to a 1/2-inch iron rod
found marking the  northeast  corner of said 72.0239 acre tract in the southerly
right-of-way  line of the Port Terminal Railroad (based on a width of 100 feet),
same being the  northwest  corner of said 7.283 acre tract,  same also being the
northeast  corner and PLACE OF BEGINNING of the herein described tract (Monument
No. 72, X=3,216,867.54 feet and Y=707,138.33 feet);

THENCE S  01(degree)  46' 48" E, along the common line between said 72.0239 acre
tract and said 7.283 acre tract,  a distance  of 774.92  feet to a 5/8-inch  rod
with aluminum disk set for the southeast  corner of the herein  described  tract
(Monument No. 81, X=3,216,891.62 feet and Y=706,363.78 feet);

                                       1
<PAGE>
THENCE N 65(degree)  03' 13" W, a distance of 1,239.09  feet to a 5/8-inch  iron
rod with  aluminum  disk set for the  southwest  corner of the herein  described
tract (Monument No. 80, X=3,215,768.13 feet and Y=706,886.40 feet);

THENCE N 19(degree)  01' 41" W, a distance of 961.76 feet to a 5/8-inch iron rod
with aluminum disk set in the southerly  right-of-way line of said Port Terminal
Railroad,  same  being  the  northwest  corner  of the  herein  described  tract
(Monument No. 79, X=3,215,454.57 feet and Y=707,795.60 feet);

THENCE S 65(degree)  03' 13" E, along the  southerly  right-of-way  line of said
Port Terminal Railroad, a distance of 1558.37 feet to the PLACE OF BEGINNING and
containing 22.2245 acres of land.

                                     TRACT B

COMMENCING at said City of Houston Monument No. 5856-1603;

     THENCE N  48(degree)  11' 05" E, a distance  of 1562.77  feet to a concrete
monument  (broken) found marking the southeast corner of said 181.536 acre tract
in the curved northerly  right-of-way line of said Port Terminal Railroad,  same
being the  southwest  corner of the residue of 525.997 acres of land conveyed to
Georgia-Pacific  Chemicals, Inc. by instrument recorded under C.C.F. No. J838887
of the O.P.R.R.P.H.C.T., same also being the most southerly southeast corner and
PLACE  OF  BEGINNING  of  the  herein   described   tract   (Monument   No.  31,
X=3,218,098.92 feet and Y=706,676.33 feet);

THENCE in a  northwesterly  direction along said curved  northerly  right-of-way
line concave to the north,  having a radius of 5671.65  feet, a central angle of
00(degree)  43' 55",  an Arc Length of 72.45 feet and a Long Chord which bears N
65(degree) 25' 10" W, 72.45 feet to a 5/8-inch iron rod found marking the end of
said curve (Monument No. 32, X=3,218,033.04 feet and Y=706,706.46 feet);

THENCE N 65(degree)  03' 13" W, along the  northerly  right-of-way  of said Port
Terminal  Railroad,  a distance of  1,222.19  feet to a concrete  monument  with
aluminum disk set for a southwest corner of the herein described tract (Monument
No. 33,  X=3,216,924.87 feet and Y=707,221.95 feet), same being the beginning of
a non-tangent curve to the left;

THENCE  running  concentric  with and 9 feet easterly and  northeasterly  of the
easterly  and  northeasterly  edge of a plant  road  named  Ethyl  Street,  in a
northwesterly  direction  along said curve to the left having a Radius of 460.00
feet, a Central Angle of 66(degree)  24' 10", an Arc Length of 533.12 feet and a
Long Chord which bears N  31(degree)  22' 02" W, 503.78 feet to a 5/8-inch  iron
rod  with  aluminum  disk  set  for  the end of said  curve  (Monument  No.  34,
X=3,216,662.65 feet and Y=707,652.10 feet);

THENCE  N  64(degree)  34' 07" W,  parallel  with  and 9 feet  northerly  of the
northerly  edge of said plant road, a distance of 348.62 feet to a 5/8-inch iron
rod with aluminum  disk set for the beginning of a curve to the right  (Monument
No. 35, X=3,216,347.81 feet and Y=707,801.81 feet);
 
                                      2
<PAGE>
THENCE running  concentric with and 9 feet  northeasterly  of the  northeasterly
edge of said plant road, in a northwesterly  direction along said curve having a
Radius of 550.00 feet, a Central Angle of  37(degree)  09' 30", an Arc Length of
356.69 feet and a Long Chord which bears N 45(degree)  59' 22" W, 350.48 feet to
a 5/8-inch iron rod with  aluminum disk set for the end of said curve  (Monument
No. 36, X=3,216,095.74 feet and Y=708,045.31 feet);

THENCE N 27(degree) 24' 37" W, parallel with and 9 feet easterly of the easterly
edge of said plant road, a distance of 160.04 feet to an aluminum  disk set on a
concrete  slab for the  beginning  of a curve to the  right  (Monument  No.  37,
X=3,216,022.07 feet and Y=708,187.38 feet);

THENCE running  concentric with and 9 feet easterly of the easterly edge of said
plant road,  in a  northwesterly  direction  along said curve having a Radius of
650.00 feet, a Central Angle of 24(degree) 44' 17", an Arc Length of 280.64 feet
and a Long Chord which bears N  15(degree)  02' 29" W, 278.47 feet to a 5/8-inch
iron rod with  aluminum  disk set for the end of said  curve  (Monument  No. 38,
X=3,215,949.80 feet and Y=708,456.31 feet);

THENCE  N  02(degree)  40'  20" W,  parallel  with  and 9 feet  westerly  of the
centerline of a railroad spur, a distance of 1694.37 to a 5/8-inch iron rod with
aluminum disk set for an angle point (Monument No. 39,  X=3,215,870.80  feet and
Y=710,148.84 feet);

THENCE N 01(degree)  55' 46" W,  parallel  with and 9 feet  easterly of the east
edge of said plant road, a distance of 467.28 feet to a concrete  monument  with
aluminum disk set for an angle point (Monument No. 40,  X=3,215,855.07  feet and
Y=710,615.85 feet);

THENCE N 06(degree)  22' 22" E, a distance of 225.29 feet to a 5/8-inch iron rod
with aluminum disk set for an angle point (Monument No. 41,  X=3,215,880.08 feet
and Y=710,839.75 feet);

THENCE N 02(degree)  40' 20" W, a distance of 746.68 feet to a 5/8-inch iron rod
with aluminum disk set for a corner  (Monument No. 42,  X=3,215,845.26  feet and
Y=711,585.61 feet);

THENCE S 87(degree) 19' 40" W, along the south edge of a plant road named Eighth
Street,  a distance of 281.05 feet to a 5/8-inch iron rod with aluminum disk set
for a corner (Monument No. 43, X=3,215,564.52 feet and Y=711,572.51 feet);

THENCE S  02(degree)  40' 20" E, a distance of 72.23 feet to a 5/8-inch rod with
aluminum  disk  set for a  corner  (Monument  No.  44,  X=3,215,567.89  feet and
Y=711,500.35);

THENCE S 87(degree)  19' 40" W, a distance of 82.62 feet to an aluminum disk set
in the centerline  expansion joint of a plant road named Center Street (Monument
No. 45, X=3,215,485.36 feet and Y=711,496.50 feet);

                                       3
<PAGE>
THENCE S 02(degree) 42' 38" E, along said centerline expansion joint, a distance
of  220.13  feet  to  an  aluminum  disk  set  for  corner   (Monument  No.  46,
X=3,215,495.77 feet and Y=711,276.62 feet);

THENCE S 87(degree)  19' 40" W, a distance of 190.95 feet to a 5/8-inch iron rod
with aluminum disk set for a corner  (Monument No. 47,  X=3,215,305.02  feet and
Y=711,267.72 feet);

THENCE N 02(degree)  40' 20" W, a distance of 118.97 feet to a 5/8-inch iron rod
with aluminum disk set for a corner  (Monument No. 48,  X=3,215,299.48  feet and
Y=711,386.55 feet);

THENCE S  87(degree)  19' 40" W, a distance of 541.15 feet to concrete  monument
with aluminum disk set for a corner  (Monument No. 49,  X=3,214,758.91  feet and
Y=711,361.32 feet);

THENCE S 00(degree)  08' 23" W,  parallel with and 10 feet east of the east edge
of a plant road named  South  Avenue,  a distance  of 100.00  feet to a concrete
monument with aluminum  disk set for a corner  (Monument No. 50,  X=3,214,758.67
feet and Y=711,261.32 feet);

THENCE S 02(degree)  40' 20" E,  parallel with and 10 feet east of the east edge
of said plant  road,  a distance  of 3111.20  feet to a concrete  monument  with
aluminum disk set in the curved northerly right-of-way line of the Port Terminal
Railroad,  same being a southerly line of said 397 acre tract, same also being a
southeast corner of the herein described tract (Monument No. 51,  X=3,214,903.72
feet and Y=708,153.51 feet);

THENCE in a  northwesterly  direction along said curved  northerly  right-of-way
line concave to the south,  having a Radius of 2922.90  feet, a Central Angle of
07(degree)  28' 04", an Arc Length of 380.96 feet and a Long Chord which bears N
72(degree) 58' 43" W, 380.69 feet to a concrete  monument with aluminum disk set
for a  southwest  corner  of  the  herein  described  tract  (Monument  No.  52,
X=3,214,539.71  feet and  Y=708,264.95  feet),  same being a southwest corner of
said 397 acre  tract,  same also  being a  southeast  corner of the  residue  of
338.561  acres of land  (Tract A)  conveyed  to  Phillips  Chemical  Company  by
instrument  recorded  under C.C.F.  No.  H204648 of the  O.P.R.R.P.H.C.T.,  said
338.561  acres of land being  described by  instrument  recorded in Volume 5410,
Page 69 of said Deed Records;

THENCE N  27(degree)  34' 49" W, along a common line between said 397 acre tract
and said Phillips  tract, a distance of 565.25 feet to a concrete  monument with
aluminum disk set for a southwest corner of the herein described tract (Monument
No. 53, X=3,214,278.01 feet and Y=708,765.96 feet0;

THENCE N  02(degree)  38' 19" W, along a common line between said 397 acre tract
and said Phillips tract, a distance of 3026.42 feet to a concrete monument found
marking a northwest corner of said 397 acre tract, same being a northwest corner
of the  herein  described  tract,  same also  being an  interior  corner of said
Phillips tract, (Monument No. 54, X=3,214,138.67 feet and Y=711,789.17 feet);

                                       4
<PAGE>
THENCE N  87(degree)  23' 41" E, along a common line between said 397 acre tract
and the  residue of said  338.561  acre  tract,  a distance  of 606.70 feet to a
concrete  monument with  aluminum disk set for an interior  corner of the herein
described tract (Monument No. 55,  X=3,214,744.75  feet and Y=711,816.75  feet),
same  being an  interior  corner  of said  397 acre  trace,  same  also  being a
southeast corner of said Phillips tract;

THENCE N  02(degree)  37' 19" W, along a common line between said 397 acre tract
and said Phillips tract, a distance of 1072.80 feet to a concrete  monument with
aluminum  disk  set  for  corner  (Monument  No.  56,  X=3,214,695.67  feet  and
Y=712,888.43  feet),  same being the south corner of said 25.317 acre tract in a
west  line of said 397 acre  tract,  same  also  being in the east  line of said
Phillips tract;

THENCE N 16(degree)  42' 00" W, a distance of 162.00 feet to a 5/8-inch iron rod
with aluminum  disk set for corner  (Monument  No. 57,  X=3,214,649.12  feet and
Y=713,043.60 feet), same being at an angle point in the common line between said
25.317 acre tract and said Phillips tract;

THENCE N 42(degree) 11' 19" W, a distance of 166.40 feet to a concrete  monument
with a 2"  aluminum  disk  found  marked PC CO INT COR TR-2  (Monument  No.  58,
X=3,214,537.37  feet and Y=713,166.89 feet), same being at an angle point in the
common line between said 25.317 acre tract and said Phillips tract;

THENCE N 56(degree) 20' 13" W, a distance of 228.00 feet to a concrete  monument
with aluminum  disk set for corner  (Monument  No. 59,  X=3,214,347.60  feet and
Y=713,293.27  feet),  same being at an angle point in common line  between  said
25.317 acrea tract of and said Phillips tract;

THENCE S 87(degree) 22' 41" W, a distance of 145.01 feet to a concrete  monument
with a 2-inch  aluminum  disk found  marked PC SW COR TR-2  marking a  southwest
corner of said 25.317 acre tract, same being an interior corner of said Phillips
tract (Monument No. 60, X=3,214,202.74 and Y=713,286.64 feet);

THENCE N  12(degree)  54' 19" W, running thru a dredged boat slip along a common
line  between  said 25.317  acre tract and said  Phillips  tract,  a distance of
2099.13 feet to the northwest  corner of said 25.317 acre tract  located  within
the Houston  Ship  Channel,  same being the  northeast  corner of said  Phillips
tract;

THENCE S 81(degree) 51' 19" E, a distance of 343.20 feet;

THENCE N 57(degree)04'  14" E, a distance of 203.77 feet to the northeast corner
of said 25.317 acre tract located within the Houston Ship Channel;

THENCE S 12(degree)  54' 19" E, along the east line of said 25.317 acre tract, a
distance of 171.55 feet to its  intersection  with the southerly  waters edge of
the Houston Ship Channel, same being the most northerly northwest corner of said
397 acre tract;

                                       5
<PAGE>
THENCE N 87(degree)  21' 54" E, along the  southerly  waters edge of the Houston
Ship  Channel a  distance  of 29.44  feet to a  northeast  corner of the  herein
described tract;

THENCE S  13(degree)  07' 30" E, at 8.77  feet  pass a  concrete  monument  with
aluminum  disk set for  reference  (Monument  No.  22,  X=3,214,314.41  feet and
Y=715,220.48  feet),  at 85.72 feet pass a 5/8-inch  iron rod with aluminum disk
set on top of a levee for reference  (Monument No. 21,  X=3,214,331.88  feet and
Y=715,145.55  feet),  continuing  the  same  course  running  parallel  with and
approximately  8 feet  westerly of the westerly edge of a plant road named South
Street, a total distance of 760.97 to a concrete monument with aluminum disk set
for corner (Monument No. 20, X=3,214,485.22 feet and Y=714,487.93 feet);

THENCE N 87(degree) 19' 40" E, parallel with and  approximately  9 feet south of
the south edge of a plant road named Second  Street,  a distance of 1220.65 feet
to a  5/8-inch  iron rod with  aluminum  disk set for corner  (Monument  No. 19,
X=3,215,704.54 feet and Y=714,544.84 feet);

THENCE S 02(degree)  40' 20" E, a distance of 344.71 feet to a 5/8-inch iron rod
with aluminum  disk set for corner  (Monument  No. 18,  X=3,215,720.61  feet and
Y=714,200.51 feet);

THENCE S 87(degree) 19' 40" W, a distance of 349.13 feet to an aluminum disk set
for corner (Monument No. 17, X=3,215,371.86 feet and Y=714,184.23 feet);

THENCE S 02(degree)  40' 20" E, parallel with and one foot east of the east edge
of Center  Street,  a distance of 555.75 feet to an aluminum disk set for corner
(Monument No. 16, X=3,215,397.77 feet and Y=713,629.09 feet);

THENCE N  87(degree)  19' 40" E,  parallel  with and one foot north of the north
edge of a plant road named Third Street, a distance of 399.13 feet to a 5/8-inch
iron rod with aluminum disk set for corner (Monument No. 15, X=3,215,796.47 feet
and Y=713,647.69 feet);

THENCE S 02(degree)  38' 28" E, a distance of 233.50 feet to a 5/8-inch iron rod
with aluminum  disk set for corner  (Monument  No. 14,  X=3,215,807.23  feet and
Y=713,414.44 feet);

THENCE N 87(degree) 21' 32" E, a distance of 58.56 feet to a point for corner;

THENCE S  02(degree)  38' 28" E, at 210.78  feet pass a  5/8-inch  iron rod with
aluminum  disk set for  reference  (Monument  No.  13,  X=3,215,875.43  feet and
Y=713,206.59  feet),  continuing the same course a total distance of 212.78 feet
to a point for corner;

THENCE N 87(degree)  21' 32" E, a distance of 56.07 feet to a 5/8-inch  iron rod
with aluminum  disk set for corner  (Monument  No. 12,  X=3,215,931.53  feet and
Y=713,207.17 feet);

THENCE N 02(degree)  38' 28" W, a distance of 43.23 feet to a 5/8-inch  iron rod
with aluminum  disk set for corner  (Monument  No. 11,  X=3,215,929.54  feet and
Y=713,250.36 feet);

                                       6
<PAGE>
THENCE S 87(degree)  21' 32" W, a distance of 26.00 feet to a 5/8-inch  iron rod
with  aluminum  disk  set  for  corner  (Monument  No.  10,  X=3,215,903.57  and
Y=713,249.16 feet);

THENCE N 00(degree)  04' 01" E, a distance of 537.69 feet to a 5/8-inch iron rod
with  aluminum  disk  set  for  corner  (Monument  No.  9,   X=3,215,904.20  and
Y=713,786.85 feet);

THENCE N 83(degree)  24' 45" E, a distance of 214.81 feet to a 5/8-inch iron rod
with  aluminum  disk  set  for  corner  (Monument  No.  8,   X=3,216,117.59  and
Y=713,811.49 feet);

THENCE N 52(degree)  48' 48" E, a distance of 168.99 feet to a 5/8-inch iron rod
with  aluminum  disk  set  for  corner  (Monument  No.  7,   X=3,216,252.22  and
Y=713,913.63 feet);

THENCE N  01(degree)30'  38" W, a distance  of 179.83  feet to an "X" cut in the
east handrail of a metal walkway for corner;

THENCE N  88(degree)  07' 20" W, at 184.39  feet pass a  5/8-inch  iron rod with
aluminum disk set for reference (Monument No. 6, X=3,216,063.19 and Y=714,099.44
feet),  continuing the same course a total distance of 442.63 feet to a 5/8-inch
iron rod with aluminum disk set for corner (Monument No. 5,  X=3,215,805.08 feet
and Y=714,107.90 feet);

THENCE N 02(degree)  43' 37" W, a distance of 263.97 feet to a 5/8-inch iron rod
with  aluminum  disk  set  for  corner  (Monument  No.  4,   X=3,215,792.52  and
Y=714,371.57 feet);

THENCE N 87(degree)  16' 23" E, a distance of 87.68 feet to a 5/8-inch  iron rod
with aluminum disk set for corner in the west edge of a plant road (Monument No.
3, X=3,215,880.10 and Y=714,375.74 feet);

THENCE N 02(degree) 43' 37" W, a distance of 133.35 feet to an aluminum disk set
for corner in the west edge of a plant road (Monument No. 2,  X=3,215,873.76 and
Y=714,508.94 feet);

THENCE 70(degree)21' 47" E, a distance of 308.79 feet to a 5/8-inch iron rod set
at the base of the northerly face of a concrete wall;

THENCE N 43(degree)05'  57" W, along the northerly face of said concrete wall, a
distance of 158.72 feet to a 5/8-inch iron rod set for corner;

THENCE N 58(degree)16'  37" W, along the northerly face of said concrete wall, a
distance of 118.61 feet to a 5/8-inch iron rod set for corner;

THENCE N 64(degree)49'  09" W, along the northerly face of said concrete wall, a
distance of 210.85 feet to a 5/8-inch iron rod set for corner;

THENCE N  24(degree)  39' 30" E, at 45.72  feet  pass a  5/8-inch  iron rod with
aluminum disk set for reference (Monument No. 1, X=3,215,783.52 and Y=714,922.24
feet),  continuing the same course a total distance of 66.16 feet to a point for
corner on the northerly edge of a bulkhead, same being the southerly waters edge
of the Houston Ship Channel;

                                       7
<PAGE>
THENCE in a  southeasterly  direction  along the  northerly  edge of a  concrete
bulkhead,  same being the southerly  waters edge of the Houston Ship Channel the
following courses and distances:

     S 64(degree) 53' 24" E, a distance of 271.78 feet;

     S 44(degree) 59' 16" E, a distance of 250.83 feet;

     S  67(degree)  02'  59" E, a  distance  of  155.04  feet to the end of said
     concrete bulkhead;

     THENCE in an  easterly  and  southeasterly  direction  along the  southerly
     waters  edge  of  the  Houston  Ship  Channel  the  following  courses  and
     distances:

     N 86(degree) 12' 39" E, a distance of  80.97 feet;

     S 67(degree) 10' 23" E, a distance of 145.11 feet;

     S 40(degree) 39' 22" E, a distance of 191.89 feet; 

     S 15(degree) 29' 08" E, a distance of 135.54 feet;

     S 02(degree) 27' 21" E, a distance of 288.40 feet;

     S 30(degree) 20' 53" E, a distance of 147.21 feet;

     S 07(degree) 09' 56" W, a distance of  72.95 feet  to  a point on  existing
     steel pilings;

     THENCE along said steel  pilings,  same being the southerly  waters edge of
     the Houston Ship Channel the following courses and distances:

     S 46(degree) 40' 38" E, a distance of 105.21 feet to an angle point of said
     steel pilings;

     N 27(degree) 41' 15" E, a distance of 104.27 feet to an angle point of said
     steel pilings;

THENCE in an easterly  direction along the southerly  waters edge of the Houston
Ship Channel the following courses and distances:

     S 78(degree) 39' 32" E, a distance of 66.00 feet;

     S 76(degree) 13' 06" E, a distance of 851.45 feet;

     N 83(degree) 16' 48" E, a distance of 77.20 feet;

     N 71(degree) 23' 44" E, a distance of 34.08 feet;

     S 51(degree) 01' 35" E, a distance of 14.22 feet to the northeast corner of
     said 181.536 acre tract,  same being the northwest corner of the residue of
     said Georgia-Pacific Chemicals, Inc. 525.997 acre tract;

THENCE  S   12(degree)   48'  29"  W,  along  the  common  line   between   said
Georgia-Pacific  tract  and said  181.536  acre  tract,  at  118.60  feet pass a
5/8-inch  iron rod  with  aluminum  disk set for  reference  (Monument  No.  61,
X=3,217,922.00 feet and Y=713,472.56  feet),  continuing the same course a total
distance of 375.33 feet to a 5/8-inch iron rod with aluminum disk set for corner
(Monument No. 62, X=3,217,865.08 feet and Y=713,222.23 feet);

                                       8
<PAGE>
THENCE S 26(degree) 22' 53" E, along said common line, a distance of 170.82 feet
to a 5/8-inch iron rod found for corner  (Monument No. 63,  X=3,217,940.99  feet
and Y=713,069.20 feet);

THENCE S 01(degree) 06' 08" E, along said common line, a distance of 534.12 feet
to a  5/8-inch  iron rod with  aluminum  disk set for corner  (Monument  No. 64,
X=3,217,951.26 and Y=712,535.18 feet);

THENCE S 02(degree) 17' 45" E, along said common line, a distance of 676.82 feet
to a  5/8-inch  iron rod with  aluminum  disk set for corner  (Monument  No. 65,
X=3,217,978.37 and Y=711,858.91 feet);

THENCE S  01(degree)  35' 39" E, along said common  line,  a distance of 1568.72
feet to a 5/8-inch iron rod with aluminum disk set for corner  (Monument No. 66,
X=3,218,022.01 and Y=710,290.80 feet);

THENCE S 01(degree) 48' 33" E, along said common line a distance of 3305.54 feet
to a concrete  monument  with  aluminum  disk set for corner  (Monument  No. 67,
X=3,218,126.38 and Y=707,986.90 feet);

THENCE S  89(degree)  25' 33" W, along said common line, a distance of 1.99 feet
to a concrete  monument  with  aluminum  disk set for corner  (Monument  No. 68,
X=3,218,124.39 and Y=706,986.88 feet);

THENCE S  00(degree)  26' 38" E, along said common line a distance of 94.27 feet
to a  concrete  monument  found  corner  (Monument  No. 69,  X=3,218,125.12  and
Y=706,892.62 feet);

THENCE S 03(degree)  22' 51" E, along said common line a distance of 142.19 feet
to a concrete  monument found for corner  (Monument No. 70,  X=3,218,133.50  and
Y=706,750.68 feet);

THENCE S 24(degree)56' 32" W, along said common line a distance of 82.00 feet to
the PLACE OF BEGINNING and containing 477.1219 acres of land.

SAVE AND EXCEPT the following described tract of land;

COMMENCING at said City of Houston Monument No. 5856-1603;

THENCE N 02(degree)  07' 38" W, a distance of 6,085.09  feet to an aluminum disk
set in an existing plant road for the northeast corner and PLACE OF BEGINNING of
the  herein   described  tract  (Monument  No.  23,   X=3,216,708.33   feet  and
Y=711,715.27 feet);

THENCE S 01(degree) 13' 42" E, a distance of 782.09 feet to an aluminum disk set
in said  plant  road  for a  southeast  corner  of the  herein  described  tract
(Monument No. 24, X=3,216,725.09 and Y=710,933.36 feet);

THENCE S 89(degree) 00' 37" W, a distance of 264.09 feet to a concrete  monument
with  aluminum  disk set for an interior  corner of the herein  described  tract
(Monument No. 25, X=3,216,461.04 feet and Y=710,928.80 feet);

                                       9
<PAGE>
THENCE S 02(degree) 43' 45" E, a distance of 1485.73 feet to a concrete monument
with aluminum  disk set for the most  southerly  southeast  corner of the herein
described tract (Monument No. 26, X=3,216,531.78 and Y=709,444.75 feet);

THENCE S 86(degree) 48' 37" W, a distance of 351.13 feet to a concrete  monument
with aluminum disk set for the southwest corner of the herein described tract in
the west edge of a gravel road (Monument No. 27, X=3,216,181.20 and Y=709,425.21
feet);

THENCE N  02(degree)  36' 27" W, along the west edge of said gravel road and its
northerly  projection,  a distance of 2116.53 feet to a concrete  monument  with
aluminum disk set for the most westerly northwest corner of the herein described
tract (Monument No. 28, X=3,216,084.91 and Y=711,539.55 feet);

THENCE N 83(degree)  30' 41" E, a distance of 344.41 feet to a 5/8-inch iron rod
with  aluminum  disk set for an interior  corner of the herein  described  tract
(Monument No. 29, X=3,216,427.11 and Y=711,578.47 feet);

THENCE N 04(degree)  22' 22" W, a distance of 118.38 feet to a 5/8-inch iron rod
with aluminum  disk set for the most  northerly  northwest  corner of the herein
described  tract in the southerly  edge of an existing  plant road (Monument No.
30, X=3,216,418.09 and Y=711,696.51 feet);

THENCE  N  86(degree)  18' 02" E, a  distance  of  290.84  feet to the  PLACE OF
BEGINNING and containing  21.9247 acres of land,  leaving a net area of 455.1972
acres.  The combined  area of the above  described  TRACT A (22.2245  acres) and
TRACT B (455.1972 acres) is 477.4217 acres of land.

NOTE:  Bearings recited above are referenced to the Texas State Plane Coordinate
System, South Central Zone, based on City of Houston Monuments No. 5856-1603 and
5856-1202.

/s/ Carrol L. Smith
- -------------------------------
Carroll L. Smith
R.P.L.S. No. 4181

Date:         April 7, 1994
Dwg. No.:     EC-2036D-8001
UEE Job No.:  2036

                                       10
<PAGE>
                                                                     EXHIBIT B-1

                          METES AND BOUNDS DESCRIPTION

            12,2947 ACRES OF LAND LOCATED IN THE THOMAS EARLE SURVEY,
                      ABSTRACT NO. 18, HARRIS COUNTY, TEXAS


BEING  12.2947 acres  (535,557  square feet) of land located in the Thomas Earle
Survey,  Abstract No. 18, Harris County,  Texas,  same being out of that certain
447,4217  acre tract of land  conveyed to the  Albemarle  Corporation  as per an
instrument  recorded  under  County  Clerk's  File No.  R143010  (Film  Code No.
###-##-####)  of the Official  Public Records of Real Property of Harris County,
Texas,  said 12.2947  acres tract of land being more  particularly  described by
metes and bounds as follows:

COMMENCING at City of Houston  Monument No. 5856-1603  (X=3,216,934.19  feet and
Y=705,634.38 feet);

THENCE North 15(degree) 18' 06" West , a distance of 9,128.97 feet to a railroad
spike  set for the  northwest  corner  and  PLACE  OF  BEGINNING  of the  herein
described tract (X=3,214,525.04 feet and Y=714,439.72 feet);

THENCE  North  87(degree)30'  34" East , a distance of 562.70 feet to a railroad
spike set for a corner of the herein described tract;

THENCE  South  86(degree)21'  18" East , a distance  of 94.34 feet to a railroad
spike set for a corner of the herein described tract;

THENCE  South  02(degree)20'  51" East , a distance of 206.50 feet to a 60 penny
nail set for a corner of the herein described tract;

THENCE  North  87(degree)30'  25" East , a distance  of 79.68 feet to a 60 penny
nail set for a corner of the herein described tract;

THENCE  North  02(degree)20'  51" East , a distance  of 52.20 feet to a 60 penny
nail set for a corner of the herein described tract;

THENCE  North  87(degree)41'  11" East , a distance  of 51.39 feet to a 60 penny
nail set for a corner of the herein described tract;

THENCE  South  02(degree)30'  43" East , a distance of 425.70 feet to a concrete
nail set for a corner of the herein described tract;

THENCE  South  87(degree)39'  28" West , a distance  of 49.74 feet to a 60 penny
nail set for a corner of the herein described tract;

THENCE  North  02(degree)57'  30" East , a distance  of 27.82 feet to a 60 penny
nail set for a corner of the herein described tract;

                                       1
<PAGE>
THENCE South 87(degree)43'38" West , a distance of 30.14 feet to a 60 penny nail
set for a corner of the herein described tract;

THENCE  South  02(degree)06'  16" East , a distance  of 31.02 feet to a 60 penny
nail set for a corner of the herein described tract;

THENCE  South  87(degree)37'  16" West , a distance  of 41.81 feet to a 60 penny
nail set for a corner of the herein described tract;

THENCE  South  02(degree)28'  12" East , a distance of 181.81 feet to a 60 penny
nail set for a corner of the herein described tract;

THENCE  South  89(degree)09'  26" West , a distance  of 43.03 feet to a 60 penny
nail set for a corner of the herein described tract;

THENCE  South  02(degree)14'  07" East , a distance  of 41.14 feet to a 60 penny
nail set for a corner of the herein described tract;

THENCE South 87(degree)51' 55" West , a distance of 428.10 feet to 1/2 inch iron
rod set for a corner of the herein described tract;

THENCE South  02(degree)09' 05" East , a distance of 72.60 feet to a `+' scribed
in concrete for a corner of the herein described tract;

THENCE South 02(degree)09' 35" East , a distance of 106.04 feet to a `+' scribed
in concrete for a corner of the herein described tract;

THENCE South 02(degree)09' 45" East , a distance of 120.98 feet to a `+' scribed
in concrete for a corner of the herein described tract;

THENCE South  14(degree)33' 35" West, a distance of 113.17 feet to a `+' scribed
in concrete for a corner of the herein described tract;

THENCE South  03(degree)03' 58" East, a distance of 126.64 feet to a1/2inch iron
rod set for a corner of the herein described tract;

THENCE South  86(degree)18'  50" West, a distance of 27.95 feet to a1/2inch iron
rod set for a corner of the herein described tract;

THENCE North  02(degree)46' 14" West, a distance of 130.12 feet to a `+' scribed
in concrete for a corner of the herein described tract;

                                       2
<PAGE>
THENCE North  14(degree)02' 35" East, a distance of 114.20 feet to a `+' scribed
in concrete for a corner of the herein described tract;

THENCE  North  02(degree)10'  10" West,  a distance of 322.62 feet to a 60 penny
nail set for a corner of the herein described tract;

THENCE  North  18(degree)33'  02" West,  a distance of 216.50 feet to a 60 penny
nail set for a corner of the herein described tract;

THENCE North  12(degree)52'  40" West, a distance of 602.95 feet to the PLACE OF
BEGINNING, containing 12.2947 acres (535,557 square feet) of land.


                              /s/ Robert A. Marlowe
                      -------------------------------------
                                Robert A. Marlowe
                      Registered Professional Land Surveyor
                           Texas Registration No. 4218


                                       3
<PAGE>



                       EXHIBIT C TO GROUND LEASE AGREEMENT

                               EASEMENT AGREEMENT


     This  Easement  Agreement  is dated July 31, 1995 and is between  ALBEMARLE
CORPORATION,  a Virginia  corporation,  having an office at 451 Florida  Street,
Baton  Rouge,  LA  70801  ("Grantor"),  and  MEMC  PASADENA,  INC.,  a  Delaware
corporation,  having an  office  at 3000 N.  South  Street,  Pasadena,  TX 77503
("Grantee").

     WHEREAS:

     A. Grantor is the owner of a trace of land  described on Exhibit A attached
hereto and made a part hereof ("Parcel 1"); and

     B. Grantee is the lessee of a tract of land described on Exhibit A ("Parcel
2").

     C. In connection  with that certain Ground Lease  Agreement  dated July 31,
1995 by and between Grantor and Grantee,  Grantor has agreed to grant to Grantee
an  easement  over,  under and  across  that part of Parcel 1  described  as the
"Easement" on Exhibit A (the  "Easement") for the purposes  described herein and
subject to the provisions hereof.

     NOW  THEREFORE,  in  consideration  of $1.00  and other  good and  valuable
consideration,  the receipt and sufficiency of which is hereby acknowledged, the
following grants, agreement, covenants and restrictions are made:

     1. GRANT OF EASEMENT.  Grantor hereby grants to Grantee,  its successor and
assigns,  as an easement  appurtenant  to Parcel 2, a perpetual  easement  over,
under and  across the  Easement  for the  purposes  of  gaining  pedestrian  and
vehicular access from public roads to Parcel 2. This Easement shall run with the
land described as Parcel 2 and shall be binding upon and inure to the benefit of
Grantee,  its successors  and assigns and all persons and entities  claiming by,
through or under any of them.

     2.  GRANTOR'S  USE  OF  EASEMENT.  Grantor's  use of  the  Easement  is not
exclusive.  Grantor reserves the right to make or permit any use of the Easement
that does not unreasonably interfere with Grantee's use of the Easement.

     3. GRANTEE'S USE OF EASEMENT.  Grantee  covenants that the Easement will be
used only for the purposes described in paragraph 1 above.

     4. MAINTENANCE AND REPAIR.

          4.1 Grantor shall maintain and repair the Easement.  If Grantee is not
     already  reimbursing  Grantor  pursuant to the Operating  Agreement of even
     date between Grantor and Grantee for such costs and expenses, Grantee shall
     reimburse

                                       1
<PAGE>
     Grantor for  Grantee's  fair share of all of the actual  costs and expenses
     incurred by Grantee in  maintaining  and repairing the Easement,  including
     but not limited to manpower, administration,  equipment and materials. This
     reimbursement  shall be Grantee's fair share of such actual cost to Grantor
     for such costs and expenses  calculated in accordance  with  Grantor's then
     current  internal  Pasadena  Plant  accounting   practices  and  procedures
     ("Reimbursable Costs").  Grantor and Grantee will use their best efforts to
     reach agreement on the calculation of Grantee's fair share of the costs and
     expenses.  The  application of such  accounting  practices  shall not favor
     Grantor or Grantee.  Any charge for salaried and hourly  employees  used by
     Grantor in maintenance  or repair of the Easement  shall include  Grantor's
     expenditures or accruals for all of Grantor's costs and expenses associated
     with its  employees,  including,  but not limited  to,  benefit and pension
     programs,  and  for  taxes,  workers'  compensation  insurance,  vacations,
     holidays, and unavoidable absences.  When employees are used on a part-time
     basis to perform  maintenance and repair,  charges for their expenses shall
     be  apportioned  according  to the time  spent.  In the event  Grantor  and
     Grantee are unable after reasonable  effort to reach agreement on Grantee's
     fair share of the cost and  expenses,  then  either  Grantor or Grantee may
     submit the matter to arbitration in the same manner as set forth in Section
     28.04 of the Operating Agreement.

          4.2 Grantor shall submit to Grantee quarterly (or monthly at Grantor's
     option)  its  invoice for  Grantee's  fair share of the costs and  expenses
     outlined  in Section 4.1 during the prior  quarter  (month).  Such  invoice
     shall be due and payable  without  discount ten (10) days after  receipt of
     the invoice.

          Invoices shall be faxed to:

                       MEMC Pasadena, Inc.
                       c/o MEMC Electronic Materials, Inc.
                       501 Pearl Drive
                       P.O. Box 8
                       St. Peters, MO 63376
                       Attention: MEMC Pasadena Accountant (Greg Bouquet)
                       Fax: 314-279-5163
                       Tel.: 314-279-5229


     Payments  will  be  made  to the  address  specified  on the  invoice.  Any
     delinquent or overdue  invoices shall be subject to a finance charge of one
     percent (1%) per month,  or the maximum  rate allowed by law,  whichever is
     less.

          4.3 Grantor shall maintain good and sufficient  records to support the
     costs and expenses invoiced  hereunder.  All records  maintained by Grantor
     relating to the costs and expenses  incurred pursuant to this section shall
     be made  available  for review by Grantee's  representative  during  normal
     hours of  business  if  Grantee  has a  reasonable  basis to  question  the
     accuracy of the costs and

                                       2
<PAGE>
     expenses invoiced by Grantor  hereunder.  Grantee may request,  and Grantor
     shall provide, detail information supporting,  and explanation of, specific
     charges at any time.

          4.4 In the event that there is a  disagreement  between the parties on
     any item or items  included  in an  invoice or as  revealed  in a review as
     provided for in Section  4.3, the parties  shall meet and in good faith use
     their  reasonable  efforts to  resolve  the  disagreement  as  promptly  as
     possible  and  prior to the  issuance  of the  next  invoice.  Payments  of
     invoices shall not be delayed in whole or in part, however,  because of any
     such  agreement  between the parties and proper  adjustments  shall be made
     when the  disagreement  is resolved.  In no event shall Grantee be entitled
     to, nor will it set off any claims  Grantee  or its  affiliates  might have
     against  Grantor  against  Grantee's  fair share of the costs and  expenses
     invoiced pursuant to this Section.

     5.  WARRANTIES  OF TITLE.  Grantor  warrants  that it has good title to the
Easement,  subject only to those liens, mortgage,  charges, pledges,  easements,
encumbrances and  imperfections  of record,  and that the grant of this easement
has been duly authorized by all necessary corporate action.

     6.  CONSTRUCTION.  The rule of strict  construction  does not apply to this
grant of easement.  This grant shall be given a reasonable  construction so that
the intention of the parties to confer a commercially  usable right of access to
Parcel 2 to Grantee, its successor and assigns, is carried out.

     7. NOTICES.  All notices and other  communications  in connection with this
Agreement shall be in writing and any notice or communication hereunder shall be
deemed  delivered to the address thereof on the earlier of: (a) three days after
deposit in any main or branch United States Post Office, certified or registered
mail, postage prepaid, (b) one day after deposit with any nationally  recognized
courier server,  with charges prepaid,  or (c) when hand delivered,  in any case
address to the parties, respectively, as follows:

     For notices to Grantor:

                         Albemarle Corporation
                         451 Florida Street
                         Baton Rouge, LA 70801
                         Attention: Vice President, Manufacturing

                                       3
<PAGE>
     with a copy to:

                         Albemarle Corporation
                         451 Florida Street
                         Baton Rouge, LA 70801
                         Attention: Law Department

     For notices to Grantee:

                         MEMC Pasadena, Inc.
                         c/o MEMC Electronic Materials, Inc.
                         501 Pearl Drive
                         P.O. Box 8
                         St. Peters, MO 63376
                         Attention: President-MEMC Pasadena, Inc.

     By notice  complying with the  requirements of this  paragraph,  each party
shall have the right to change the  address  for all  future  notices  and other
communications  to such party;  provided,  however,  that no notice of change of
address or addresses shall be effective until actually received.

     8. RELEASE OF EASEMENT.  Grantee may herein  terminate  this  instrument by
recording a release in recordable  form with  directions for delivery of same to
Grantor,  its  successors or assigns,  at Grantor's  past address given pursuant
hereto,  whereupon  all  rights  duties and  liabilities  hereby  created  shall
terminate.   This  Easement  shall  automatically  terminate  in  the  event  of
termination  or expiration of the Ground Lease of even date between  Grantor and
Grantee,  whereupon  Grantor may record such  termination  or  expiration  as of
public record.

     9. GOVERNING LAW;  COMPLETE  AGREEMENT.  This Agreement is entered into and
shall be construed  and governed in all respects  under the laws of the State of
Texas.  This  Agreement  sets forth the entire  agreement  of the  parties  with
respect to the subject matter hereof.

     10. GUARANTY.  MEMC Electronic Materials,  Inc., parent company of Grantee,
absolutely,  unconditionally  and  irrevocably  guarantees  the  obligations  of
Grantee, its successors and assigns, pursuant to this Agreement, and as such, is
a contracting party to this Agreement.

     11.  INSOLVENCY.  If Grantee or MEMC  Electronic  Materials,  Inc. makes an
assignment  for the benefits of its  creditor(s),  or attachment or  garnishment
proceedings  are  commenced,  or a receiver is  appointed  over any  property of
Grantee or MEMC  Electronic  Materials,  Inc. is appointed  over any property of
Grantee or MEMC Electronic Materials,  Inc., or proceedings are instituted by or

                                       4
<PAGE>
against Grantee or MEMC Electronic  Materials,  inc. under the bankruptcy  Code,
then  Grantor  may  terminate  this  Agreement  effective  upon the date of such
assignment, commencement, appointment of institution or proceedings.

     IN WITNESS  WHEREOF,  the parties  hereto have executed or have caused this
instrument to be executed by their proper  officers  duly  authorized to execute
the same, as of the day and year first above written.

GRANTOR:                                  GRANTEE:

ALBEMARLE CORPORATION                     MEMC PASADENA, INC.
By:                                       By:
Its:                                      Its:

Sworn  and  subscribed  before  me        Sworn  and  subscribed  before  me  
this 31st day of July, 1995               this31st day of July, 1995           
- -----------------------------------       -----------------------------------
Notary Public                             Notary Public
My commission expires:                    My commission expires:

                                       5
<PAGE>
                                    EXHIBIT A

     This Exhibit A shall be substituted for promptly following Closing by a map
to be prepared by Grantor depicting Parcel 1 and Parcel 2.

     Exhibit A will show that an approximately 30(degree) wide easement (or such
normally  associated with the width of N. South Street) is granted by Grantor to
Grantee  along N. South Street  through  Parcel 1 (which is  Grantor's  Pasadena
Plant site) from the point N. South Street  ceases to be a public road until the
point where N. South Street  intersects  the closest point of Parcel 2 (which is
the land as defined in the Ground Lease Agreement). In the event N. South Street
ends prior to  intersecting  Parcel 2, then the easement  shall  continue in the
most direct route to the closest point of Parcel 2.






                                       6
<PAGE>

                       EXHIBIT D TO GROUND LEASE AGREEMENT

                               EASEMENT AGREEMENT

     This Easement  Agreement is dated                , 1995 and is between MEMC
Pasadena,  Inc. or Albemarle  Corporation  (as the case may be), a
            corporation, having an office at                   ("Grantor"),  and
MEMC Pasadena Inc. or Albemarle  Corporation (as the case may be), a           
            corporation, having an office at                ("Grantee).

     WHEREAS:

     A. Grantor is the owner of a tract of land  described on Exhibit A attached
hereto and made a part hereof ("Parcel A"); and

     B. Grantee is the lessee of a tract of land described on Exhibit A ("Parcel
B"); and

     C. In connection  with that certain Ground Lease  Agreement  dated July 31,
1995 by and between Grantor and Grantee,  Grantor has agreed to grant to Grantee
a legally valid,  binding and recordable  perpetual easement whereby the Grantor
provides one or more easements to Grantee over,  across,  upon, in or under,  as
the case may be, a certain  portion or potions of Parcel A to be agreed  upon in
good faith between the parties to enable  Grantor to obtain,  install,  operate,
maintain,   repair  and  replace  utilities,   including,   without  limitation,
electricity,  gas, telephone,  sewage and water from he applicable  producers to
service Parcel B, and to repair fences, it being the intent that the location of
such easements shall be in the most  convenient  place for the provision of such
utilities  to the  extent  reasonably  practicable,  while  providing  the least
inconvenience to Grantor.

     NOW  THEREFORE,  in  consideration  of $1.00  and other  good and  valuable
consideration,  the receipt and sufficiency of which is hereby acknowledged, the
following grants, agreement, covenants and restrictions are made:

     1. GRANT OF EASEMENT.  Grantor hereby grants to Grantee, its successors and
assigns,  as an easement  appurtenant  to Parcel 2, a perpetual  easement  over,
under     and     across     the     Easement     for    the     purposes     of
- -----------------------------------------------------
- -----------------------------------------------------------------------------
______________________________________  ("Easement").  This  Easement  shall run
with the land  described  as Parcel 2 and shall be binding upon and inure to the
benefit of Grantee,  its  successors  and  assigns and all persons and  entities
claiming by, through or under any of them.

<PAGE>
     2.  GRANTOR'S  USE  OF  EASEMENT.  Grantor's  use of  the  Easement  is not
exclusive.  Grantor reserves the right to make or permit any use of the Easement
that does not unreasonably interfere with Grantee's use of the Easement.

     3. GRANTEE'S USE OF EASEMENT.  Grantee  covenants that the Easement will be
used only for the purposes described in paragraph 1 above.

     4. MAINTENANCE AND REPAIR.

     4.1 Grantor shall maintain and repair the Easement. Grantee shall reimburse
     Grantor for  Grantee's  fair share of all of the actual  costs and expenses
     incurred by Grantee in maintaining  and repairing the Easement,  including,
     but not limited to manpower, administration,  equipment and materials. This
     reimbursement  shall be  Grantee's  fair share of such  additional  cost to
     Grantor for such costs and expenses calculated in accordance with Grantor's
     then current internal Pasadena Plant or MEMC Plant accounting practices and
     procedures  ("Reimbursable Costs"). Grantor and Grantee will use their best
     efforts to reach  agreement on the  calculation  of Grantee's fair share of
     the costs and expenses.  The application of such accounting practices shall
     not favor Grantor or Grantee.  Any charge for salaried and hourly employees
     used by Grantor in  maintenance  or repair of the  Easement  shall  include
     Grantor's  expenditures or accruals for all of Grantor's costs and expenses
     associated with its employees,  including,  but not limited to, benefit and
     pension  programs,   and  for  taxes,  workers'   compensation   insurance,
     vacations, holidays, and unavoidable absences. When employees are used on a
     part-time  basis to  perform  maintenance  and  repair,  charges  for their
     expenses  shall be  apportioned  according to the time spent.  In the event
     Grantor and Grantee are unable after  reasonable  effort to reach agreement
     on Grantee's  fair share of the cost and expenses,  then either  Grantor or
     Grantee  may  submit the matter to  arbitration  in the same  manner as set
     forth in Section 28.04 of the Operating Agreement.

     4.2 Grantor  shall  submit to Grantee  quarterly  (or monthly at  Grantor's
     option)  its  invoice for  Grantee's  fair share of the costs and  expenses
     outlined  in Section 4.1 during the prior  quarter  (month).  Such  invoice
     shall be due and payable  without  discount ten (10) days after  receipt of
     the invoice.

          Invoices shall be faxed to:

                    ---------------------------
                    ---------------------------
                    ---------------------------
                    Attention: Accounts Payable

     Payments  will  be  made  to the  address  specified  on the  invoice.  Any
     delinquent or overdue  invoices shall be subject to a finance charge of one
     percent (1%) per month,  or the maximum  rate allowed by law,  whichever is
     less.

                                       2
<PAGE>

     4.3 Grantor shall maintain good and sufficient records to support the costs
     and expenses invoiced hereunder. All records maintained by Grantor relating
     to the costs and expenses  incurred  pursuant to this section shall be made
     available  for review by Grantee's  representative  during  normal hours of
     business if Grantee has a reasonable  basis to question the accuracy of the
     costs and expenses invoiced by Grantor hereunder.  Grantee may request, and
     Grantor shall provide, detail information  supporting,  and explanation of,
     specific charges at any time.

     4.4 In the event that there is a  disagreement  between  the parties on any
     item or items included in an invoice or as revealed in a review as provided
     for n Section  4.3,  the  parties  shall  meet and in good  faith use their
     reasonable  efforts to resolve the disagreement as promptly as possible and
     prior to the issuance of the next invoice.  Payments of invoices  shall not
     be delayed  in whole or in part,  however,  because  of any such  agreement
     between  the  parties  and  proper  adjustments  shall  be  made  when  the
     disagreement  is  resolved.  In no event shall  Grantee be entitled to, nor
     will it set off any claims  Grantee or its  affiliates  might have  against
     Grantor  against  Grantee's  fair share of the costs and expenses  invoiced
     pursuant to this Section.

     5.  WARRANTIES  OF TITLE.  Grantor  warrants  that it has good title to the
Easement,  subject only to those liens, mortgage,  charges, pledges,  easements,
encumbrances and  imperfections  of record,  and that the grant of this easement
has been duly authorized by all necessary corporate action.

     6.  CONSTRUCTION.  The rule of strict  construction  does not apply to this
grant of easement.  This grant shall be given a reasonable  construction so that
the intention of the parties to confer a commercial usable easement for Grantee,
its successors and assigns, is carried out.

     7. NOTICES.  All notices and other  communications  in connection with this
Agreement shall be in writing and any notice or communication hereunder shall be
deemed  delivered  to the  addresses  thereof on the  earlier of: (a) three days
after  deposit in any main or branch  United  States Post  Office,  certified or
registered mail, postage prepaid,  (b) one day after deposit with any nationally
recognized courier server, with charges prepaid, or (c) when hand delivered,  in
any case address to the parties, respectively, as follows:

                  For notices to Grantor:


                  ---------------------------
                  ---------------------------
                  ---------------------------
                  Attention:

                                       3
<PAGE>
                  with a copy to:

                  ---------------------------
                  ---------------------------
                  ---------------------------
                  Attention:

                  For Notices to Grantee:

                  ---------------------------
                  ---------------------------
                  ---------------------------

                  with a copy to:

                  ---------------------------
                  ---------------------------
                  ---------------------------
                  Attention:

     By notice  complying with the  requirements of this  paragraph,  each party
shall have the right to change the  address  for all  future  notices  and other
communications  to such party;  provided,  however,  that no notice of change of
address or addresses shall be effective until actually received.

     8. RELEASE OF EASEMENT.  Grantee may herein  terminate  this  instrument by
recording a release in recordable  form with  directions for delivery of same to
Grantor,  its  successors or assigns,  at Grantor's  last address given pursuant
hereto,  whereupon  all rights,  duties and  liabilities  hereby  created  shall
terminate.

     9. GOVERNING LAW;  COMPLETE  AGREEMENT.  This Agreement is entered into and
shall be construed  and governed in all respects  under the laws of the State of
Texas.  This  Agreement  sets forth the entire  agreement  of the  parties  with
respect to the subject matter hereof.

     10.  INSOLVENCY.  If Grantee  makes an  assignment  for the  benefit of its
creditor(s),  or attachment  or  garnishment  proceedings  are  commenced,  or a
receiver  is  appointed  over  any  property  of  Grantee,  or  proceedings  are
instituted by or against Grantee hereto under the bankruptcy  code, then Grantor
may  terminate  this  Agreement  effective  upon  the  date of such  assignment,
commencement, appointment or institution of proceedings.

     IN WITNESS  WHEREOF,  the parties  hereto have executed or have caused this
instrument to be executed by their proper  officers  duly  authorized to execute
the same, as of the day and year first above written.

                                       4
<PAGE>


GRANTOR:                                   GRANTEE:
ALBEMARLE CORPORATION                      MEMC PASADENA, INC.
By:                                        By:
Its:                                       Its:


Subscribed before me this   st day          Subscribed before me this   st day 
                         ---                                          ---
of           ,                              of             ,            
  -----------  --------                         -----------  ------- 
 
- ----------------------------------          ----------------------------------

Notary Public                                Notary Public
My commission expires:                       My commission expires:
                       -----------                                 ------------

                                       5
<PAGE>

                                    EXHIBIT A

    To be attached. Map of Pasadena Plant Setting Forth Outline of Electronic
                        Materials Facility and Easement.






                                  AMENDMENT TO
                             GROUND LEASE AGREEMENT

     THIS AMENDMENT TO GROUND LEASE  AGREEMENT  amends,  effective as of May 31,
1997 (the "Amendment Date"), that certain Ground Lease Agreement ("Lease") dated
July 15, 1995 by and between ALBEMARLE CORPORATION ("Lessor") and MEMC PASADENA,
INC. ("Lessee").

     Lessor and Lessee hereby agree as follows:

     1.   As of the Amendment Date, the real property  described in the attached
          Exhibits  B-1(A) and B-2(A) is added to the definition of "Land".  The
          addition of such real  property does not,  however,  change any of the
          terms of the Ground Lease Agreement, including the Initial Term or any
          Extension Term.

     2.   As of the Amendment Date, Section 2.1 is revised to read as follows:

               "Rent.  Lessee hereby tenders to Lessor and Lessor hereby accepts
               from Lessee the sum of $ 143,383.00,  which  constitutes  paid up
               rent for the  duration  of the Lease  Term for the  approximately
               15.8692 acres  comprising  the Land.  This consists of $50.00 per
               acre for the 12.3  acres  originally  leased  to Lessee as of the
               Commencement  Date and  $40,000  per  acre for the  approximately
               3.5692  acres which have been added to the Land  pursuant to this
               Amendment No. 1 to the Lease."

     3.   As to the 3.5692  acres which have been added to the Land  pursuant to
          this Amendment No. 1 to the Lease, Lessee will not build any permanent
          improvements  within five (5) feet of the  northern  property  line of
          Tract 2 (as shown in Exhibit B-1(A)).  If Lessee decides to fence this
          northern property line, then Lessee will, at its own cost and expense,
          remove any and all improvements  (whether permitted or otherwise) that
          Lessee  has made  within  this  five (5) foot  setback  and any  fence
          constructed  by Lessee  will be  constructed  outside of this five (5)
          foot setback.

     4.   All other terms and conditions of the Lease remain unchanged.


MEMC PASADENA, INC.                         ALBEMARLE CORPORATION


By:  /s/ William R. Cooke                By:  /s/ Thomas G. Avant
   ___________________________________      ____________________________________
Title:  President & COO                  Title:  Senior Vice President
Date:   6/19/97                          Date:   7/9/97

<PAGE>

MEMC ELECTRONIC MATERIALS, INC.


By:  /s/ Charles W. Cook, Jr.
   ___________________________________
Title:  Corporate Vice President
Date:   4 June 97

<PAGE>

                                 Exhibit B-1(A)

                            TRACT ONE - 0.8420 ACRES

COMMENCING at City of Houston Monument No. 5856 - 1603  (X=3,216,934.19 feet and
Y = 705,634.38 feet);

THENCE North 15 degree 11' 08" West,  a distance of 9,145.34  feet to a railroad
spike  set for the  northwest  corner  and  PLACE  OF  BEGINNING  of the  herein
described tract (X=3,214.538.60 feet and Y=714,460.39 feet);

THENCE  North 87 degree 19' 42" East , a distance  of 548.35  feet to a railroad
spike set for a corner of the herein described tract;

THENCE  South 78 degree  16' 37" East , a  distance  of 96.86 feet to a 1/2 inch
iron rod set for a corner of the herein described tract;

THENCE  North 87 degree 22' 58" East , a distance  of 119.13  feet to a 1/2 inch
iron rod set for a corner of the herein described tract;

THENCE  South 07 degree 40' 01" East , a distance  of 127.05  feet to a 1/2 inch
iron rod set for a corner of the herein described tract;

THENCE South 02 degree 41'44" East , a distance of 33.81 feet to a concrete nail
set for a corner of the herein described tract;

THENCE  South 87 degree  30' 46" West , a  distance  of 51.39 feet to a 1/2 inch
iron rod found for a corner of the herein described tract;

THENCE South 02 degree 59' 13" East, a distance of 52.20 feet to a 1/3 inch iron
rod found for a corner of the herein described tract;

THENCE  South 87 degree  19' 52" West , a  distance  of 79.68 feet to a 1/2 inch
iron rod found for a corner of the herein described tract;

THENCE  North 02 degree 31' 12" West , a distance  of 206.51  feet to a 1/2 inch
iron rod found for a corner of the herein described tract;

THENCE North 86 degree 32' 10" West, generally along the north line of a 12.2947
acre tract leased to MEMC Pasadena, Inc., a distance of 94.34 feet to a railroad
spike found for a corner of the herein described tract;

THENCE South 87 degree 20' 18" West , continuing  generally along the north line
of a 12.2947 acre tract leased to MEMC Pasadena, Inc., a distance of 562.70 feet
to a railroad  spike found for the  northwest  corner of the said  12.2947  acre
tract and the most westerly southwest corner of the herein described tract;

THENCE  North 12 degree 58' 31" West, a distance of 2.23 feet to a 1/2 inch iron
rod set for a cut-back corner of the herein described tract;

THENCE  North 37 degree 07' 06" East,  a distance  of 16.54 feet to the PLACE OF
BEGINNING of TRACT ONE, containing 0.8420 acres (36,676 square feet) of land.

<PAGE>

                                 Exhibit B-2(A)

                            TRACT TWO - 2.7272 ACRES

COMMENCING at City of Houston Monument No. 5856-1603 (X=3,216.934.19 feet and Y=
705,634.38 feet);

THENCE North 11 degree 58' 05" West , a distance of 8,241.39  feet to a railroad
spike  set for the  northwest  corner  and  PLACE OF  BEGINNING  of the  herein
described tract (X=3,215,225.19 feet and Y=713,696.63 feet);

THENCE  South 02 degree 38' 27" East,  a distance  of 294.79  feet to a 1/2 inch
iron rod set for a corner of the herein described tract;

THENCE  South 87 degree 22' 58" West,  a distance  of 386.61  feet to a 1/2 inch
iron rod set for a corner of the herein described tract;

THENCE North 02 degree 37' 02" West, a distance of 46.00 feet to a 1/2 inch iron
rod set for a corner of the herein described tract;

THENCE South 87 degree 22' 58" West, a distance of 85.78 feet to a 1/2 inch iron
rod set for a corner of the herein described tract;

THENCE  North 02 degree 19' 57" West, a distance of 33.61 feet to a + scribed in
concrete set for a corner of the herein described tract;

THENCE North 02 degree 19' 47" West, a distance of 106.04 feet to a + scribed in
concrete for a corner of the herein described tract;

THENCE North 02 degree 19' 17" West, a distance of 72.60 feet to a 1/2 inch iron
rod found for a corner of the herein described tract;

THENCE  North 87 degree 50' 10" East,  a distance  of 428.10  feet to a 1/2 inch
iron rod round for a corner of the herein described tract;

THENCE  North 02 degree 24' 25" West,  a distance  of 41.14 feet to a chain link
fence corn post for a corner of the herein described tract;

THENCE  North 88 degree 59' 08" East,  a distance  of 43.03 feet to the PLACE OF
BEGINNING of TRACT TWO, containing 2.7272 acres (118,796 square feet) of land.


                              CONSULTING AGREEMENT
                                  AS ADVISOR TO
                             CHIEF EXECUTIVE OFFICER


     This  Consulting  Agreement  ("Agreement")  is made as dated below,  by and
between Dr. Robert M. Sandfort ("Dr.  Sandfort") and MEMC Electronic  Materials,
Inc. ("MEMC").  Dr. Sandfort and MEMC have mutually agreed to end Dr. Sandfort's
employment with MEMC, so that Dr. Sandfort may pursue other interests and become
a consulting  advisor to MEMC's CEO. Dr. Sandfort has been employed as President
and Chief  Operating  Officer of MEMC. Dr. Sandfort also serves as a Director on
the MEMC Board of Directors. In order to resolve any and all matters arising out
of the employment  relationship  and its  termination,  and in order to insure a
smooth transition of Dr. Sandfort's job duties and to continue to take advantage
of Dr.  Sandfort's  skills and  experience,  the parties  have entered into this
Agreement. The parties agree as follows:

     1. Dr. Sandfort will voluntarily retire and resign his employment with MEMC
effective December 1, 1997  ("Termination  Date"). Dr. Sandfort will receive all
regular  compensation  due for  services  rendered as an MEMC  employee  through
November 30, 1997 on the next regular pay date. In addition,  Dr.  Sandfort will
receive  payment  for all  accrued  but  unused  vacation  time in the amount of
$47,525.60,  payable on December  15,  1997.  Dr.  Sandfort  (or his  designated
beneficiary,  if he should  die before the  scheduled  payment  date) also shall
receive  compensation due him pursuant to the Employment  Agreement dated May 1,
1995 between Dr. Sandfort and MEMC (the "Employment Agreement") in the aggregate
amount of $561,666.67,  payable as follows:  $28,083.33  payable on December 15,
1997; $337,000.00 payable on January 2, 1998; and $196,583.34 payable on January
4,  1999.  The  Employment  Agreement,  which  is  attached  as  Exhibit  A  and
incorporated  by  reference  herein,  shall  be  deemed  to be  amended  by  all
provisions of this Agreement that are inconsistent therewith.  Capitalized terms
used  herein but not  defined  herein  shall have the  meanings  assigned in the
Employment  Agreement.  "Agreement" shall mean this Consulting  Agreement unless
the context otherwise requires.

     2. For a  one-year  period  beginning  with the day  after  Dr.  Sandfort's
Termination  Date  ("Consulting  Period"),  Dr.  Sandfort agrees to make himself
reasonably  available for consultation with MEMC either by phone or in person as
reasonably  requested  by MEMC on such matters as MEMC may  reasonably  request.
During the  Consulting  Period Dr.  Sandfort  shall be  considered  a consulting
advisor to MEMC's CEO. Dr. Sandfort shall be free to perform services for others
when not  performing  under  this  Agreement;  provided,  that  nothing  in this
Agreement  will  eliminate  or  modify  in  any  way  the   confidentiality  and
non-competition  restrictions placed upon Dr. Sandfort by Paragraphs 5.1 and 5.2
of the Employment  Agreement,  which  paragraphs are  incorporated  by reference
herein and shall be effective as of the Termination  Date,  except that (a) such
paragraphs  shall be  interpreted  solely with  reference to the  definition  of
"Competitive Work" set forth in the Confidentiality  Agreement dated as of March
31, 1989 (the "Confidentiality  Agreement"),  which is incorporated by reference
in the Employment  Agreement;  and (b) the written  consent of MEMC described in
the first  paragraph of the section of the  Confidentiality  Agreement  entitled
"Competitive Activity" shall not be unreasonably withheld and shall be deemed to
have been given if Dr.  Sandfort  has  received no response  from MEMC as of the
14th day  after  Dr.  Sandfort  has  furnished  the  written  evidence  required
thereunder to MEMC.

     3. The  parties  agree that  during the  Consulting  Period,  the  parties'
relationship will be that of a client and an independent contractor. During this
period Dr.  Sandfort  will not be  considered  an agent or  employee of MEMC and
therefore will not  necessarily be entitled to any of the benefits MEMC provides
its employees,  including but not limited to health,  worker's  compensation and
pension or profit  sharing  plans;  except that nothing  contained  herein shall
deprive Dr. Sandfort of any benefits to which he is entitled under Section 3.1.1
of the Employment Agreement, under any plan providing benefits during retirement
if and when Dr. Sandfort elects to begin receiving  retirement  income,  and any
other  benefits  that  may  be  specifically   provided  under  this  Consulting
Agreement.  Nothing in this  Agreement  shall  adversely  affect Dr.  Sandfort's
rights with respect to any vested profit sharing or pension monies,  if any; Dr.
Sandfort's right to begin receiving  retirement  income, if he is eligible under
the terms of any  plan,  at any time  before,  during,  or after the  Consulting
Period;  or Dr.  Sandfort's  rights  under  any  other  plan for which he may be
eligible or any law,  including  without  limitation  the  Consolidated  Omnibus
Reconciliation Act of 1986 ("COBRA").

     4.  In  consideration  of Dr.  Sandfort's  consulting  services  and  other
promises  herein,  on  January 2, 1998,  MEMC will pay to Dr.  Sandfort  (or his
designated  beneficiary,  if he should die before January 2, 1998) a lump sum in
the amount of $539,751.00. In addition, Dr. Sandfort will be paid an hourly rate
of $250 for each hour and fraction thereof which he spends providing  consulting
services,  with a minimum of two hours for each telephone  consultation and four
hours for each requested  consultation in person. In addition, Dr. Sandfort will
be reimbursed for all reasonable expenses incurred as a result of his performing
consulting  services.  To the extent that Dr. Sandfort  requires  administrative
support to perform  his  consulting  duties,  these  will be  provided  by MEMC;
provided that, it is expressly  understood that MEMC will not be responsible for
providing Dr. Sandfort with office facilities at any MEMC location. Dr. Sandfort
expressly  acknowledges  that the  monies  paid  hereunder  are  over and  above
anything which MEMC may owe him for his services prior to the termination of his
employment  and  represents  additional  pay and benefits to which Dr.  Sandfort
would not normally be entitled at the end of his employment.

     If Dr.  Sandfort  is  required  to  travel in order to  provide  consulting
services to MEMC, MEMC shall provide travel insurance in an amount not less than
that  for  which  Dr.  Sandfort  was  eligible  during  the  month  prior to the
Termination Date.

     5. The parties also agree as follows:

     (a)  MEMC shall take or cause to be taken all actions necessary such that:

          (1)  all stock options  previously  awarded to Dr.  Sandfort under any
               plan of MEMC  ("Options")  that have not vested  shall vest as of
               the Termination Date;

          (2)  if at any time in the  future  MEMC  issues  Options  to  replace
               Options  granted  as of the same  date as any  Options  that then
               remain outstanding,  the effect of which is to lower the exercise
               price under the Options being replaced,  MEMC shall issue Options
               to  replace  outstanding  Options on the same terms as such other
               Options,  subject  to  Subsection  5(a)(3)  and  subject  to  the
               execution of such documents as MEMC reasonably requires to assure
               compliance with the securities laws.

          (3)  Dr.  Sandfort  shall have all rights  under the Equity  Incentive
               Plan or Long Term Incentive  Plan, as the case may be, to pay any
               Option  exercise  price in shares of stock or  through a cashless
               exercise  procedure,  as well as the  right  to  elect  to pay in
               shares  of  stock  all or a part  of any  amount  required  to be
               withheld to satisfy  income tax liability in connection  with the
               exercise of any Option (unless such election would subject him to
               liability  under Section 16(b) of the Securities  Exchange Act of
               1934, as amended);

          (4)  Dr. Sandfort shall be allowed to exercise all Options  (including
               any replacement  options) until the tenth anniversary of the date
               on which each Option was granted; and

          (5)  all shares of restricted stock previously awarded to Dr. Sandfort
               under any plan of MEMC ("Restricted  Stock") that have not vested
               shall  vest  as  of  the  Termination  Date,  and  all  remaining
               restrictions  on such  Restricted  Stock  shall  lapse  as of the
               Termination Date.

     (b)  The  six (6)  month  prior  irrevocable  election  requirement  of the
          Supplemental  Executive  Pension  Plan shall be waived.  As payment in
          full for all amounts due him from the Supplemental  Executive  Pension
          Plan, Dr.  Sandfort (or his designated  beneficiary,  if he should die
          before  the   scheduled   payment  date)  shall  receive  120  monthly
          installment payments as follows:

          (1)  $10,588.11 each month in 1998;

          (2)  $10,764.58 each month in 1999;

          (3)  $10,946.24 each month in 2000;

          (4)  $11,133.88 each month in 2001;

          (5)  $11,328.73 each month in 2002;

          (6)  $11,532.64 each month in 2003;

          (7)  $11,748.88 each month in 2004;

          (8)  $11,983.86 each month in 2005;

          (9)  $12,253.50 each month in 2006; and

          (10) $12,621.10 each month in 2007.

     (c)  Dr. Sandfort (or his designated  beneficiary,  if he should die before
          the scheduled payment date) also shall receive as retirement income in
          addition to amounts due him from the  Supplemental  Executive  Pension
          Plan, 120 monthly installment payments as follows

          (1)  $11,644.68 each month in 1998;

          (2)  $11,838.76 each month in 1999;

          (3)  $12,038.54 each month in 2000;

          (4)  $12,244.91 each month in 2001;

          (5)  $12,459.20 each month in 2002;

          (6)  $12,683.47 each month in 2003;

          (7)  $12,921.28 each month in 2004;

          (8)  $13,179.71 each month in 2005;

          (9)  $13,476.25 each month in 2006; and

          (10) $13,880.54 each month in 2007.

     (d)  MEMC shall advance to Dr.  Sandfort as an interest free loan an amount
          equal to 47.05% of the  gross  income  realized  by Dr.  Sandfort  for
          federal  income  tax  purposes  resulting  from  the  vesting  of MEMC
          Restricted  Stock on December 1, 1997, which loan shall be advanced in
          sufficient  time to fund the required tax  withholding on such income.
          Such loan  shall be repaid in full no later than  January 2, 2003.  In
          addition,  on April 15 after each year  during the period  December 1,
          1997 through  December 31, 2002, MEMC shall pay Dr. Sandfort an amount
          equal to 47.05% of the amount of imputed interest  reported by MEMC to
          Dr.  Sandfort  for federal  income tax  purposes  for the  immediately
          preceding year.

     (e)  MEMC shall deposit  $2,661,282.29  in the MEMC  Electronic  Materials,
          Inc.  Supplemental  Executive  Pension Plan Trust in January,  1998 to
          provide a source of  payment of the  amounts  due Dr.  Sandfort  under
          Subsections 5(b) and 5(c) above.

     6.  Dr.   Sandfort  agrees  to  release  MEMC  and  its  past  and  present
shareholders,   officers,   directors,   agents,   employees,   representatives,
attorneys, successors and assigns, and affiliated or related companies (Released
Parties),  from any and all claims  made,  to be made,  or which might have been
made as a consequence of Dr.  Sandfort's  employment with MEMC or arising out of
the  termination of said  employment  relationship  other than the breach of any
provision of this Agreement by MEMC. This release  specifically  applies to, but
is not  limited  to,  any and all  claims  for back pay,  front  pay,  sick pay,
bonuses,  or any other form of compensation or benefits not expressly  preserved
herein,  claims of  wrongful  or  retaliatory  discharge,  and any and all other
claims arising under federal, state, or local law, known or unknown, which exist
as of the date of the  execution  of this  Agreement,  whether such claims arise
under  either  common  law  (whether  sounding  in tort or  contract)  or  under
constitution,  statute or ordinance,  including by way of illustration Title VII
of the Civil Rights Act of 1954, as amended, 42 U.S.C. Section 2000(e), et seq.;
the Missouri Human Rights Act, as amended,  and the Americans With  Disabilities
Act, 42 U.S.C.  Section 12101, et seq., the Age Discrimination in Employment Act
of 1967, 29 U.S.C. Section 621, et seq.

     7. Dr.  Sandfort  agrees never to institute,  directly or  indirectly,  any
action or proceeding of any kind against any Released  Party,  on account of any
matters over which he has waived his rights in this Agreement.

     8.  MEMC   hereby   releases   Dr.   Sandfort   and  his  heirs,   personal
representatives, successors, and assigns from any and all claims of every nature
and description,  whether known or unknown,  prior to the date hereof. This does
not release Dr.  Sandfort from any claim which may be made as a  consequence  of
the future breach by Dr. Sandfort of any provision of this Agreement.

     9. MEMC agrees never to institute,  directly or  indirectly,  any action or
proceeding  of any kind  against Dr.  Sandfort,  on account of any matters  over
which MEMC has waived its rights in this Agreement.

     10. Within seven (7) days  following Dr.  Sandfort's  Termination  Date, he
shall  return  to MEMC  any and all  property  of MEMC  which he may have in his
possession  or control,  if any,  including,  but not  limited to any  financial
records or  reports,  memoranda,  and all other  documents,  recordings,  tapes,
disks,  etc.,  whether written or electronic,  and without  retaining any copies
thereof, except that he may retain copies of those documents that may be helpful
to him in preparing an updated resume. Upon completion of the Consulting Period,
he shall also return all MEMC  property  with which he may be provided,  without
retaining copies.

     11. The provisions of this Agreement governed by state law will be governed
by Missouri  law,  exclusive  of any rules that would  apply to another  state's
substantive  rules of law or  equity,  or  which  would  in any way  impair  the
enforceability of the arbitration provision described in paragraph 18 below.

     12. This Agreement shall be binding upon, and shall inure to the benefit of
MEMC and Dr. Sandfort and their  respective  heirs,  executors,  administrators,
legal  representatives,  successors  and assigns;  and MEMC  affirmatively  will
require any  successor  to all or any portion of the business  and/or  assets of
MEMC that includes the  obligations to which MEMC is bound under this Agreement,
whether  succession  is direct or indirect  and without  regard to the manner by
which  it is  effected,  including  without  limitation  purchase,  merger,  and
consolidation, expressly to assume and perform this Agreement in the same manner
and to the same  extent  that MEMC  would be  required  to perform it if no such
succession had taken place. As used in this Agreement,  "MEMC" shall include any
such successor.

     13. Dr.  Sandfort  agrees not to reapply  for  employment  with MEMC at any
time.

     14. The parties  agree that in the event either  party  breaches any of the
provisions  of this  Agreement,  either  party  shall be entitled to any and all
equitable  remedies  provided  by  law.  Moreover,  if a party  prevails  in any
litigation or arbitration related to a breach of this Agreement,  the prevailing
party shall be entitled to the  reimbursement  of  reasonable  attorney's  fees,
expenses and court costs incurred in such litigation or arbitration.

     15.  The  parties  mutually  agree  that the  terms of this  Agreement  are
strictly  confidential.  They will not be discussed  or  otherwise  disclosed to
third parties.  However,  the parties  expressly  understand that nothing herein
prohibits  the divulging or reporting of anything  related to this  Agreement as
required by law,  regulation,  governmental  authority  or similar  body,  or as
required  in the  written  opinion of counsel to comply  with  applicable  laws,
including  securities  laws and regulations or stock exchange  requirements,  it
being expressly  acknowledged and agreed that this Agreement and all amendments,
attachments and exhibits thereto shall be filed with the Securities and Exchange
Commission ("the SEC") and furnished to parties requesting copies of exhibits to
filings with the SEC. The parties further acknowledge that employees of MEMC may
learn of the terms of this Agreement in the ordinary course of business and that
Dr. Sandfort's spouse, attorneys, accountants and advisors may also learn of its
terms.  However,  the parties will undertake to advise such persons as discussed
in the foregoing sentence that they are not to disclose or otherwise divulge the
terms of this Agreement.

     16. Dr. Sandfort expressly acknowledges that he has been advised to consult
with an attorney of his choice regarding his execution of this document, that he
has been told that he has  twenty-one  (21) days from his date of receipt of the
final version of this  Agreement to either accept or reject its terms,  and that
if he executes this Agreement,  he shall have the right to revoke his acceptance
by notifying  MEMC, in writing,  within seven (7) days of his execution,  of his
revocation.

     17.  Dr.  Sandfort  shall  remain a member of the  Board as a  non-employee
Director of MEMC,  until such time as he is removed or is reappointed,  provided
that he shall  resign  from the Board  forty-five  (45)  days  prior to the 1998
annual  meeting  unless  requested in writing not to do so. Dr.  Sandfort  shall
receive fees and other compensation,  if any, as a non-employee Director of MEMC
at the same level as determined for MEMC's other non-employee Directors, payable
during such time as Dr. Sandfort continues to serve as a member of the Board.

     18. Any disputes  between the parties to this Agreement shall be settled by
arbitration  in St. Louis,  Missouri,  before a single  arbitrator in accordance
with  the   Commercial   Arbitration   Rules  under  the  American   Arbitration
Association,  provided that discovery  shall be permitted in accordance with the
Federal  Rules of Civil  Procedure.  The decision of such  arbitration  shall be
final and  conclusive  on the parties,  and judgment  upon such  decision may be
entered in any court having jurisdiction thereof.

     19. If a court of  competent  jurisdiction  determines  that any  provision
contained  in this  Agreement,  or any part  thereof,  cannot  for any reason be
enforced,  the  parties  agree  that  such  determination  shall  not  affect or
invalidate the remainder of this Agreement.

     20. MEMC makes no  representations  and is not responsible  with respect to
the income tax and securities law  consequences to Dr.  Sandfort  resulting from
this Agreement and the compensation and benefits payable pursuant  thereto.  All
amounts payable  pursuant to this Agreement are subject to federal and state tax
withholding as required by applicable law from time to time.

     21.  Dr.   Sandfort   may   designate  a   beneficiary   or   beneficiaries
(contingently,  consecutively,  or  successively)  of a death  benefit,  if any,
payable under this  Agreement  and, from time to time, may change his designated
beneficiary.  A beneficiary may be a trust. A beneficiary  designation  shall be
made in writing and delivered to MEMC while Dr.  Sandfort is alive.  If there is
no designated beneficiary surviving at the death of Dr. Sandfort, payment of any
death benefit shall be made to his surviving spouse,  and if he has no surviving
spouse, to his estate.

     22.  Sandfort  hereby  agrees  now and at any time in the future to refrain
from making any comments or  statements  to the press,  the employees of MEMC or
any individual or entity with whom MEMC has a business  relationship  or others,
(i) which would be likely to  adversely  affect the  conduct of the  business of
MEMC or any of its  affiliates,  or any of their  plans or  prospects,  or their
business   reputations,   or  the   business   reputations   of  any  of   their
representatives  or members of their  respective  boards of  directors,  or (ii)
which would  disparage in any way or cast in a negative light MEMC or any of its
affiliates, or any of their respective directors, officers, agents or employees.
MEMC hereby  agrees now and at any time in the future to refrain from making any
comments  or  statements  to the press or any  individual  or  entity  with whom
Sandfort  has a business  relationship  or others,  (i) which would be likely to
adversely  affect the  business  reputation  of  Sandfort,  or (ii) which  would
disparage in any way or cast in a negative light Sandfort.

     23. The parties acknowledge that each has read this Agreement consisting of
9 pages, 23 sections,  and the attached  exhibits and fully understand same. Dr.
Sandfort also  acknowledges that he agrees to all of the terms and conditions of
this Agreement and that he does so of his own free will and without coercion and
that he has had an  opportunity  to review this document with an attorney of his
choice.  MEMC  represents  that it has the  corporate  authority  to enter  this
Agreement and has taken or will take all steps  necessary to carry out its terms
and conditions. The parties agree that no representation or promise inconsistent
with or  additional  to the terms of this  Agreement  have been made,  that this
Agreement  includes  all  referenced  Exhibits  and is  the  full  and  complete
agreement of the parties, and that this Agreement may not be modified,  changed,
or added to except in writing signed by all parties.

     THE PARTIES  ACKNOWLEDGE THAT THE INSTANT AGREEMENT  CONTAINS A BINDING AND
ENFORCEABLE ARBITRATION PROVISION.

SO AGREED:                            MEMC ELECTRONIC MATERIALS, INC.

/s/ Robert M. Sandfort                By:    /s/ Ludger H. Viefhues
- -------------------------                    ------------------------
Robert M. Sandfort, Ph.D.             Title: CEO

Date:  December 1, 1997                Date:  December 1, 1997
       ------------------                     -----------------------


<PAGE>
                                                                       Exhibit A

                              EMPLOYMENT AGREEMENT


     EMPLOYMENT  AGREEMENT  dated as of May 1, 1995 (the  "Agreement"),  between
MEMC ELECTRONIC MATERIALS,  INC. of St. Peters, Missouri, a Delaware corporation
("MEMC"), and Dr. Robert M. Sandfort (the "Executive").

     WHEREAS,  MEMC desires to employ the  Executive and to assure itself of the
continued services of the Executive and the availability of his advise,  counsel
and leadership for the term of employment provided for in this Agreement; and

     WHEREAS,  the Executive  desires to accept such  employment  and enter into
this Agreement;

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

     1. Term.

     Subject  to  Sections  3,  4 and 5  below,  the  term  of  the  Executive's
employment  under this  Agreement  shall  commence on the effective  date of the
Registration  Statement  on Form  S-1 in  connection  with  the  initial  public
offering  (the "IPO")  "hereinafter,  the "IPO date") of  securities of MEMC and
shall terminate on the first day of the month  following the fourth  anniversary
of the IPO Date (the "Term").  During the Term,  the  Executive  will devote his
full  business  time to his  duties as  President  and Chief  Operating  Officer
("COO") of MEMC. In such capacity, the Executive agrees to serve MEMC faithfully
and to the best of his ability  under the direction of the Board of Directors of
MEMC (the "Board"). The Executive also agrees to serve, if elected or appointed,
at no compensation  in addition to that provided for in this  Agreement,  in the
position of officer or director of any affiliate of MEMC.

     2. Compensation and Benefits.

     2.1.  Compensation.  In  consideration  of the Executive's  agreement to be
employed by MEMC under the terms and  provision  of this  Agreement,  MEMC shall
provide the Executive with the compensation  arrangements listed on the attached
Schedule 1; provided,  however,  that the grants of options and restricted stock
described  therein shall be subject to the  consummation by MEMC of the IPO. The
Executive's  compensation  as  described  in Schedule 1 shall be reviewed by the
Board,  based  upon the  Executive's  performance  and then  current  titles and
responsibilities,  not less often than annually. The Executive's base salary may
be increased,  but not decreased,  based on his performance and upon the Board's
view of the appropriate base salary for the titles and responsibilities assigned
to the Executive from time to time. Compensation of the Executive is primarily a
function of company  performance  and individual  performance  and could, in any
given year, be higher or lower than that of other COOs in comparable  positions.
But it is the intent that  MEMC's  compensation  opportunity  be  structured  to
afford comparable pay given comparable performance by the Executive and MEMC. In
addition to any increases  effected as a result of such review, the Board at any
time  may  in  its  sole  discretion   increase  the  Executive's  base  salary.
Compensation  will  include but not be limited to: (a) base  salary;  (b) annual
incentives;  (c) grants of options,  restricted  stock or other  awards under an
omnibus  equity  incentive plan (the "Equity  Incentive  Plan") to be adopted by
MEMC prior to  consummation of the IPO; and (d)  participation  in any long term
incentive plan established by MEMC.

     2.2.  Pension  Benefits.  The  Executive  shall  continue to be entitled to
participate  in the MEMC Pension Plan for Salaried  Employees (the "MEMC Pension
Plan").

     2.3. Other Employee  Benefits.  The Executive shall be entitled to continue
to participate as a vested employee in any welfare plans of MEMC, including, but
not limited to, medical,  dental,  life insurance,  and disability  income,  and
perquisites  to which an employee of comparable or lesser grade level in MEMC is
entitled.

     3. Termination Payments.

     3.1. Termination Without Cause.

     3.1.1.  General.  Subject  to  Section  5  below,  if MEMC  terminates  the
Executive's  employment without Cause (as defined below) prior to the expiration
of the Term,  (i) MEMC shall be obligated to pay the  Executive his then current
base salary for the balance of the Term (the  "Severance  Period") in accordance
with MEMC's  payroll  practices,  (ii) all unvested  options  granted  under the
Equity  Incentive Plan shall vest and all  restrictions  on awards granted under
the Equity  Incentive Plan shall lapse and (iii) the Executive  shall be allowed
to exercise all stock options granted under the Equity  Incentive Plan until the
earlier of (A) the later of (x) one year following the date of  termination  and
(y) the first day of the month following the fourth  anniversary of the IPO Date
and (B) the expiration of the term of the stock option; provided,  however, that
the  Executive  may  exercise any  incentive  stock  options  until three months
following the date of termination (or, if earlier,  until expiration of the term
of such  incentive  stock  options).  In addition,  in the event of  termination
without Cause, the then current year annual incentive will be paid at such level
and at such  time as  payment  is made to  MEMC's  other  executives  under  the
applicable  bonus plan. The Executive shall have no further right to receive any
other  compensation  or  benefits  after  such  termination  or  resignation  of
employment,  except as determined  in accordance  with the terms of the employee
benefit plans or programs of MEMC or as provided in Section 2.2 above.

     3.1.2.  Conditions  Applicable  to the  Severance  Period.  If,  during the
Severance Period, the Executive breaches his obligations under Section 5 of this
Agreement,  MEMC may,  upon  written  notice  to the  Executive,  terminate  the
Severance  Period and cease to make any further payments or provide any benefits
described in Section 3.1.1. except as determined in accordance with the terms of
the  employee  benefit  plans or programs of MEMC as provided for in Section 2.2
above.

     3.1.3. Death During Severance Period. In the event of the Executive's death
during the  Severance  Period,  payments  of the  severance  amounts  under this
Section 3 shall continue to be made during the remainder of the Severance Period
to the  beneficiary  designated in writing for this purpose by the Executive or,
if no such beneficiary is specifically designated, to the Executive's estate.

     3.1.4. Date of Termination.  The date of termination of employment  without
Cause shall be the date  specified  in a written  notice of  termination  to the
Executive (which date shall be coincident with or subsequent to the date of such
notice).

     3.2. Termination for Cause: Resignation by the Executive.

     3.2.1.  General.  If, prior to the expiration of the Term, the  Executive's
employment is terminated  by MEMC for Cause,  or the Executive  resigns from his
employment  hereunder,  the  Executive  shall be entitled to payment of his base
salary  as then in effect  through  and  including  the date of  termination  or
resignation.  The  Executive  shall have no further  right to receive  any other
compensation  or benefits  after such  termination or resignation of employment,
except as determined in accordance with the terms of the employee  benefit plans
or programs of MEMC or as provided in Section 2.2 above.

     3.2.2. Date of Termination. Subject to the proviso to Section 3.3, the date
of  termination  for Cause shall be the date  specified  in a written  notice of
termination  to the  Executive.  The  date  of  resignation  shall  be the  date
specified in the written notice of resignation from the Executive to MEMC (which
date shall be  coincident  with or subsequent to the date of such notice) or, if
no date is specified therein,  10 business days after receipt by MEMC of written
notice of resignation from the Executive.

     3.3.  Cause.   Termination  for  "Cause"  shall  mean  termination  of  the
Executive's employment because of:

          (i) any act or  omission  that  constitutes  a material  breach by the
     Executive of any of his material  obligations  under this Agreement  (other
     than by reason of his death or Permanent Disability (as defined below));

          (ii) the continued  failure or refusal of the Executive to perform the
     material  duties  required  of him as an  employee  of MEMC  (other than by
     reason of his death or Permanent Disability);

          (iii) any willful  material  violation by the  Executive of any law or
     regulation  applicable to the business of MEMC or any of its  subsidiaries,
     or the Executive's  conviction of a felony, or any willful  perpetration by
     the Executive of a common law fraud; or

          (iv) any other willful misconduct by the Executive which is materially
     injurious  to the  financial  condition  or business  reputation  of, or is
     otherwise  materially  injurious  to,  MEMC or any of its  subsidiaries  or
     affiliates;

provided, however, that if any such Cause relates to the Executive's obligations
under this  Agreement and (x) is susceptible to cure and (y) does not constitute
a repetition of such Cause, MEMC shall not terminate the Executive's  employment
hereunder  unless  MEMC first gives the  Executive  notice of its  intention  to
terminate  and of the grounds for such  termination,  and the Executive has not,
within 10 business days following receipt of the notice, cured such Cause, or in
the event such Cause is not  susceptible  to cure within  such 10  business  day
period, the Executive has not taken all reasonable steps within such 10 business
day period to cure such Cause as promptly as practicable thereafter.

     4. Death or Disability.

     In the event of  termination  of the  Executive's  employment  by reason of
death or Permanent  Disability (as hereinafter  defined),  the Executive (or his
estate, as applicable) shall be entitled to base salary and benefits  determined
under  Section 2 hereof  through the date of death or, in the case of  Permanent
Disability,  through the later of the date of termination or the date (not later
than one  year  following  the  date of  termination)  on  which  the  Executive
commences to receive disability  benefits (including a pro rata annual incentive
for the year of death or disability at the maximum  opportunity  level). For 50%
of the restricted  stock held by the Executive on the date of the termination of
his  employment,   all  restrictions  will  immediately   lapse.  The  remaining
restricted  stock and options  outstanding  will  continue to vest in accordance
with Schedule 1 as if his employment has not terminated. Other benefits shall be
determined in accordance with the benefit plans  maintained by MEMC,  including,
without limitation,  the Equity Incentive Plan and any Long Term Incentive Plan,
and MEMC  shall have no  further  obligation  hereunder.  For  purposes  of this
Agreement,  "Permanent  Disability"  means a physical  or mental  disability  or
infirmity of the Executive that prevents the normal performance of substantially
all his duties as an employee  of MEMC,  which  disability  or  infirmity  shall
exist,  or in the opinion of an  independent  physician is reasonably  likely to
exist, for any continuous period of 180 days.

     5. Restrictive Covenants.

     5.1  Non-Compete:  Confidentiality.  For the period  extending  through the
later of (i) April 1, 2000 and (ii) two years  following the date of termination
of the Executive's  employment  with MEMC or its affiliates,  the Executive will
not accept employment nor engage in business,  directly or indirectly, as a sole
proprietor,  member of a  partnership,  stockholder  or  investor  (other than a
stockholder or investor owning not more than a 5% interest), officer or director
of a  corporation,  or as an employee,  associate,  consultant  or agent for any
person, partnership,  corporation or other business organization or entity other
than  MEMC or any of its  subsidiaries  which  competes  with MEMC  without  the
express written consent of MEMC. In addition,  the terms of the  confidentiality
agreement  dated March,  1989 between MEMC and the  Executive  are  incorporated
herein by reference. Notwithstanding anything contained in this Section 5 to the
contrary,  the period of  applicability  of this  Section 5 shall be extended an
additional  day for each day on which the Executive is in breach of this Section
5.

     5.2 Injunctive Relief. Without intending to limit the remedies available to
the  parties  hereto,  the  parties  acknowledge  that  a  breach  of any of the
covenants  contained in this  Section 5 may result in material  and  irreparable
injury to MEMC for which there is no adequate remedy at law, that it will not be
possible to measure  damages for such injuries  precisely and that, in the event
of such a breach or threat  thereof,  MEMC shall be entitled to seek a temporary
restraining order and/or a preliminary or permanent  injunction  restraining the
Executive from engaging in activities prohibited by this Section 5 or such other
relief as may be required  specifically  to enforce any of the covenants in this
Section  5. If,  for any  reason,  it is held that the  restrictions  under this
Section 5 are not reasonable or that consideration therefor is inadequate,  such
restrictions shall be interpreted or modified to include as much of the duration
and scope  identified in this Section 5 as will render such  restrictions  valid
and enforceable.

     6. Successors. MEMC will require any successor (whether direct or indirect,
by purchase, merger,  consolidation or otherwise) to all or substantially all of
the business and/or assets of MEMC to expressly assume and agree to perform this
Agreement  in the same manner and to the same extent that MEMC would be required
to perform it if no such  succession had taken place. As used in this Agreement,
"MEMC" shall mean MEMC as defined above and any successor to its business and/or
assets which by reason  hereof  assumes and agrees to perform this  Agreement by
operation of law, or otherwise.

     7. Miscellaneous.

     7.1 Severability.  Each provision of this Agreement shall be interpreted in
such  manner as to be  effective  and valid  under  applicable  law,  but if any
provision  of this  Agreement  is  held to be  prohibited  by or  invalid  under
applicable  law, such provision  will be ineffective  only to the extent of such
prohibition or invalidity,  without invalidating the remainder of such provision
or the remaining provisions of this Agreement.

     7.2 Disputes.  Any disputes  between the parties to this Agreement shall be
settled by  arbitration  in St.  Louis,  Missouri  under the auspices of, and in
accordance with the rules of, the American Arbitration Association. The decision
in such  arbitration  shall be final and  conclusive on the parties and judgment
upon such decision may be entered in any court having jurisdiction thereof.

     7.3 Entire Agreement: Amendment.

          (i) Except as expressly set forth herein,  this  Agreement  represents
     the entire  agreement of the parties  concerning  the subject matter hereof
     and  shall  supersede  any  and all  previous  contracts,  arrangements  or
     understandings between MEMC and the Executive.

          (ii) This  Agreement  may be  amended  at any time by  mutual  written
     agreement of the parties hereto.

     7.4 Withholding. The payment of any amount pursuant to this Agreement shall
be  subject  to  applicable  withholding  and  payroll  taxes,  and  such  other
deductions as may be required under MEMC's employee benefit plans, if any.

     7.5  Governing  Law. This  Agreement  shall be governed by and construed in
accordance with the laws of the State of Missouri.

     The parties have executed this Agreement as of the day and year first above
written.

                                         MEMC Electronic Materials, Inc.

/s/ Robert M. Sandfort                   By: /s/ Ludger H. Viefhues
- --------------------------------             -----------------------------------
Robert M. Sandfort                           Chairman of the Board

[                              ]

<PAGE>

                                   Schedule 1

                          Current Compensation Program



o    Annual Base Salary - USD $310,000 per annum

o    1995 Incentive  Program Target  Incentive  Opportunity as a percent of base
     salary - Annual Incentive Target/Maximum Opportunity; 30%/66%

o    Grants of Stock Options and Performance Contingent Vesting Restricted Stock
     in connection with the IPO

o    Participation  in any Long Term  Incentive Plan (expected to be established
     by MEMC on or after January 1, 1996)



     STOCK OPTIONS                                      RESTRICTED STOCK
- -----------------------                          ------------------------------
72,364  Options  at IPO price  which             24,000  shares of Restricted
vest at the rate of 25% per year,                Stock which vest 100% (i.e.,
such that 100% vesting will occur on             all forfeiture  restrictions
the fourth anniversary of the IPO                lapse) on the fourth anniver-
Date. (1) ("Ratable  Vesting  Options")          sary of the IPO Date.
                                                 ("Performance Vesting 
                                                 Restricted  Stock").  However,
                                                 if, at any time during the
                                                 first 3  years,  the common
                                                 stock  share appreciation is
                                                 greater   than   55% from the
                                                 IPO  price, 50% of the
                                                 Performance  Vesting
                                                 Restricted Stock will become
                                                 fully vested.  If such share
72,364  Options at IPO price which               appreciation is greater than
vest 100% on the fourth anniversary              100%, then all Performance
of the IPO Date.  ("Cliff Vesting                Vesting Restricted Stock will
Options")                                        become fully vested.

                                                 24,000 shares of Restricted
                                                 Stock which vest 100% on fourth
                                                 anniversary of the IPO Date.
                                                 ("Cliff Vesting Restricted
                                                 Stock")


- ---------------
(1)  The number of shares  representing  .171% of  outstanding  stock on a fully
     diluted  basis is  assumed  to be 72,364  shares.  If the IPO  results in a
     different  number of shares equaling .171% of outstanding  stock on a fully
     diluted basis, the Executive shall receive, for each of the Ratable Vesting
     and Cliff Vesting Option  grants,  the greater of 72,364 shares or .171% of
     outstanding  stock on a fully  diluted  basis.  The number of both  Ratable
     Vesting and Cliff Vesting Restricted Stock shares referenced granted to the
     Executive will also be determined in this manner.

Performance  Vesting Restricted Stock, Cliff Vesting Options,  and Cliff Vesting
Restricted  Stock will be forfeited  and  cancelled,  if the  employment  of the
Executive  is  terminated  for Cause or due to his option to retire prior to the
fourth anniversary of the IPO Date.



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