----

|                     | TABLE      OF CONTENTS                                                                          | Page  |
|--------------------------|------------------------------------------------------------------------------------------------------|------------|
| ARTICLE      I.          | AMENDS      AND SUPERSEDES PRIOR AGREEMENT                                                           | 1     |
| ARTICLE      II.         | RETENTION      OF CONTRAN                                                                            | 1          |
|                     | Section      2.1.    Performance of      Services                                | 1          |
|                     | Section      2.2.    Director      Services Not Included                         | 2          |
|                     | Section      2.3.    Outside      Services                                       | 2          |
|                     | Section      2.4.    Disclaimer,      Limited Liability; Indemnification         | 2     |
| ARTICLE      III.   | COMPENSATION                                                                                         | 3          |
|                     | Section      3.1.    Compensation      for Services                              | 3          |
|                     | Section      3.2.    Out-of-Pocket      Costs                                    | 3     |
| ARTICLE      IV.         | CONFIDENTIALITY                                                                                      | 3          |
|                     | Section      4.1.    Confidentiality                                             | 3     |
| ARTICLE      V.          | MISCELLANEOUS                                                                                        | 4          |
|                     | Section      5.1.    Maintenance and      Inspection of Records                  | 4          |
|                     | Section      5.2.    Notices                                                     | 4          |
|                     | Section      5.3.    Term;      Renewal                                          | 4          |
|                     | Section      5.4.     Independent      Contractor                                | 4          |
|                     | Section      5.5.     Force      Majeure                                         | 4          |
|                     | Section      5.6.     Entire      Agreement                                      | 5          |
|                     | Section      5.7.          Amendments                                            | 5          |
|                     | Section      5.8.          Severability                                          | 5          |
|                     | Section      5.9.          Counterparts                                          | 5          |
|                     | Section      5.10.   Successors and      Assigns                                      | 5          |
|                     | Section      5.11.           Governing    Law | 5          |
|                     | Section      5.12.   Submission to      Jurisdiction; Service; Waivers                | 5          |
|                     | Section      5.13.   No      Third-Party Beneficiaries                                | 6          |
|                     | Section      5.14.   Titles and      Headings                                         | 6          |

----

----

----

----

| If      to Contran:   | Contran      Corporation.Three      Lincoln Centre5430      LBJ Freeway, Suite 1700Dallas,      Texas 75240-2697Attention:      General CounselPhone:      972.450.4251Fax:      972.448.1445                    |
|----------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| If      to Keystone:  | Keystone      Consolidated Industries, Inc.Three      Lincoln Centre5430      LBJ Freeway, Suite 1700Dallas,      Texas 75240-2697Attention:      Acting General CounselPhone:      972.450.4251Fax      972.448.1445 |

----

----

----