ATTACHMENT 1 

1.  Information about the Management and Controlling Persons of the
    Company, as of 31 December 2005

+----------------+---+----------+-------+--------+---------+----------+
| Name /         | A | Highest  | % of  | W      |         |          |
| Position       | g | E        | Sha   | orking |         |          |
|                | e | ducation | rehol | Expe   |         |          |
|                |   |          | ding¹ | rience |         |          |
+================+===+==========+=======+========+=========+==========+
|                |   |          |       | Period | P       | Company  |
|                |   |          |       |        | osition | / Type   |
|                |   |          |       |        |         | of       |
|                |   |          |       |        |         | Business |
+----------------+---+----------+-------+--------+---------+----------+
| Mr.Krit        | 6 | MBA,     | 0.003 | 1993 - | C       | Siam     |
| Ratanarak      | 1 | Eastern  |       | No     | hairman | City     |
|                |   |          |       | vember | of the  | Cement   |
| Chairman of    |   | New      |       | 2006   | Board   | Public   |
| the Board of   |   | Mexico   |       |        | of      | Company  |
| Directors²     |   | Uni      |       |        | Di      | Limited  |
|                |   | versity, |       |        | rectors |          |
| (Up to         |   | USA      |       |        |         |          |
| November 9,    |   |          |       |        |         |          |
| 2006)          |   |          |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
|                |   |          |       | 198    | Vice    | (same as |
|                |   |          |       | 8-1993 | C       | above)   |
|                |   |          |       |        | hairman |          |
|                |   |          |       |        | of the  |          |
|                |   |          |       |        | Board   |          |
|                |   |          |       |        | of      |          |
|                |   |          |       |        | Di      |          |
|                |   |          |       |        | rectors |          |
+----------------+---+----------+-------+--------+---------+----------+
| Total          |   |          |       |        |         |          |
| attendance at  |   |          |       |        |         |          |
| Board Meetings |   |          |       |        |         |          |
| in 2006: 1     |   |          |       |        |         |          |
| time           |   |          |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
| Mr.Veraphan    | 6 | Master   | 0.002 | No     | C       | Siam     |
| Teepsuwan      | 5 | Degree   |       | vember | hairman | City     |
|                |   | (F       |       | 2006-P | of the  | Cement   |
| Chairman of    |   | inance), |       | resent | Board   | Public   |
| the Board of   |   | Nort     |       |        | of      | Company  |
| Directors²     |   | heastern |       |        | Di      | Limited  |
|                |   | Uni      |       |        | rectors |          |
| (Elected       |   | versity, |       |        |         |          |
| Chairman on    |   | USA      |       |        |         |          |
| November 9,    |   |          |       |        |         |          |
| 2006)          |   |          |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
|                |   |          |       | 2001-  | Vice    | (same as |
|                |   |          |       |        | C       | above)   |
|                |   |          |       | No     | hairman |          |
|                |   |          |       | vember | of the  |          |
|                |   |          |       | 2006   | Board   |          |
|                |   |          |       |        | of      |          |
|                |   |          |       |        | Di      |          |
|                |   |          |       |        | rectors |          |
+----------------+---+----------+-------+--------+---------+----------+
|                |   |          |       | 199    | D       | (same as |
|                |   |          |       | 8-2000 | irector | above)   |
+----------------+---+----------+-------+--------+---------+----------+
| Total          |   |          |       |        |         |          |
| attendance at  |   |          |       |        |         |          |
| Board Meetings |   |          |       |        |         |          |
| in 2006: 5     |   |          |       |        |         |          |
| times          |   |          |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
| Mr.Paul Heinz  | 5 | Lic.     | 0.022 | 2001-P | Vice    | Siam     |
| Hugentobler    | 8 | oec.HSG, |       | resent | C       | City     |
| Vice Chairman  |   |          |       |        | hairman | Cement   |
| of the Board   |   | Un       |       |        | of the  | Public   |
| of Directors²  |   | iversity |       |        | Board   | Company  |
|                |   | of       |       |        | of      | Limited  |
|                |   |          |       |        | Di      |          |
|                |   | St.      |       |        | rectors |          |
|                |   | Gallen,  |       |        |         |          |
|                |   | Swi      |       |        |         |          |
|                |   | tzerland |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
|                |   |          |       | 199    | M       | (same as |
|                |   |          |       | 9-2000 | anaging | above)   |
|                |   |          |       |        | D       |          |
|                |   |          |       |        | irector |          |
+----------------+---+----------+-------+--------+---------+----------+
|                |   |          |       | 2002-P | Member  | Holcim   |
|                |   |          |       | resent | of the  | Ltd. /   |
|                |   |          |       |        | Ex      | Cement   |
|                |   |          |       |        | ecutive |          |
|                |   |          |       |        | Co      |          |
|                |   |          |       |        | mmittee |          |
+----------------+---+----------+-------+--------+---------+----------+
| Total          |   |          |       |        |         |          |
| attendance at  |   |          |       |        |         |          |
| Board Meetings |   |          |       |        |         |          |
| in 2006: 4     |   |          |       |        |         |          |
| times          |   |          |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
| Mr.Urs         | 6 | Lic.     | -     | 1998-P | D       | Siam     |
| Wolfgang Bieri | 4 | oec.HSG, |       | resent | irector | City     |
|                |   |          |       |        |         | Cement   |
| Director²      |   | Un       |       |        |         | Public   |
|                |   | iversity |       |        |         | Company  |
|                |   | of St.   |       |        |         | Limited  |
|                |   | Gallen,  |       |        |         |          |
|                |   | Swi      |       |        |         |          |
|                |   | tzerland |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
|                |   |          |       | 2      | Deputy  | Holcim   |
|                |   |          |       | 002-De | C       | Ltd. /   |
|                |   |          |       | cember | hairman | Cement   |
|                |   |          |       | 2004   | of the  |          |
|                |   |          |       |        | Ex      |          |
|                |   |          |       |        | ecutive |          |
|                |   |          |       |        | Co      |          |
|                |   |          |       |        | mmittee |          |
+----------------+---+----------+-------+--------+---------+----------+
| Total          |   |          |       |        |         |          |
| attendance at  |   |          |       |        |         |          |
| Board Meetings |   |          |       |        |         |          |
| in 2006: 3     |   |          |       |        |         |          |
| times          |   |          |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
| Mr.Harald Link | 5 | Lic.     | -     | 1998-P | Member  | Siam     |
|                | 2 | oec.HSG, |       | resent | of the  | City     |
| Member of the  |   |          |       |        | Audit   | Cement   |
| Audit          |   | Un       |       |        | Com     | Public   |
| Committee,     |   | iversity |       |        | mittee, | Company  |
| director²      |   | of       |       |        | d       | Limited  |
|                |   |          |       |        | irector |          |
|                |   | St.      |       |        |         |          |
|                |   | Gallen,  |       |        |         |          |
|                |   | Swi      |       |        |         |          |
|                |   | tzerland |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
| Good           |   | Director |       |        |         |          |
| Governance     |   | Certi    |       |        |         |          |
| Experience     |   | fication |       |        |         |          |
|                |   | Program  |       |        |         |          |
|                |   | (DCP),   |       |        |         |          |
|                |   | by Thai  |       |        |         |          |
|                |   | I        |       |        |         |          |
|                |   | nstitute |       |        |         |          |
|                |   | of       |       |        |         |          |
|                |   | D        |       |        |         |          |
|                |   | irectors |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
|                |   | C        |       |        |         |          |
|                |   | orporate |       |        |         |          |
|                |   | Go       |       |        |         |          |
|                |   | vernance |       |        |         |          |
|                |   | Program, |       |        |         |          |
|                |   | at St.   |       |        |         |          |
|                |   | Gallen,  |       |        |         |          |
|                |   | Swi      |       |        |         |          |
|                |   | tzerland |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
| Total          |   |          |       |        |         |          |
| attendance at  |   |          |       |        |         |          |
| Board Meetings |   |          |       |        |         |          |
| in 2006: 2     |   |          |       |        |         |          |
| times          |   |          |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
| Mr. Sura       | 6 | Ph.D.    | -     | 1999-P | D       | Siam     |
| Sanittanont    | 9 | Ec       |       | resent | irector | City     |
|                |   | onomics, |       |        |         | Cement   |
| Director²      |   | Un       |       |        |         | Public   |
|                |   | iversity |       |        |         | Company  |
|                |   | of       |       |        |         | Limited  |
|                |   | Wi       |       |        |         |          |
|                |   | sconsin, |       |        |         |          |
|                |   | USA      |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
| Total          |   |          |       |        |         |          |
| attendance at  |   |          |       |        |         |          |
| Board Meetings |   |          |       |        |         |          |
| in 2006: 4     |   |          |       |        |         |          |
| times          |   |          |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
| Mr. Ekasak     | 6 | Master   | -     | Fe     | D       | Siam     |
| Puripol        | 2 | of       |       | bruary | irector | City     |
|                |   | Ma       |       | 2006 – |         | Cement   |
| Director²      |   | nagement |       |        |         | Public   |
|                |   | (        |       | P      |         | Company  |
|                |   | Graduate |       | resent |         | Limited  |
|                |   | I        |       |        |         |          |
|                |   | nstitute |       |        |         |          |
|                |   | of       |       |        |         |          |
|                |   | Business |       |        |         |          |
|                |   | Administ |       |        |         |          |
|                |   | ration), |       |        |         |          |
|                |   |          |       |        |         |          |
|                |   | Chula    |       |        |         |          |
|                |   | longkorn |       |        |         |          |
|                |   | Un       |       |        |         |          |
|                |   | iversity |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
|                |   | B.A.     |       | 2003 - | C       | Bank of  |
|                |   | (        |       | P      | hairman | Ayudhya  |
|                |   | Commerce |       | resent | of The  | Public   |
|                |   | and      |       |        | Inv     | Company  |
|                |   | Acco     |       |        | estment | Limited  |
|                |   | untancy) |       |        | Co      |          |
|                |   | Chula    |       |        | mmittee |          |
|                |   | longkorn |       |        |         |          |
|                |   | Un       |       |        |         |          |
|                |   | iversity |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
|                |   |          |       | 2002 - | C       | Ayudhya  |
|                |   |          |       | P      | hairman | Asset    |
|                |   |          |       | resent |         | Ma       |
|                |   |          |       |        |         | nagement |
|                |   |          |       |        |         | Company  |
|                |   |          |       |        |         | Limited  |
+----------------+---+----------+-------+--------+---------+----------+
|                |   |          |       | 2002 - | Vice    | Bank of  |
|                |   |          |       | 2006   | C       | Ayudhya  |
|                |   |          |       |        | hairman | Public   |
|                |   |          |       |        | of the  | Company  |
|                |   |          |       |        | Risk    | Limited  |
|                |   |          |       |        | Man     |          |
|                |   |          |       |        | agement |          |
|                |   |          |       |        | Co      |          |
|                |   |          |       |        | mmittee |          |
+----------------+---+----------+-------+--------+---------+----------+
| Total          |   |          |       |        |         |          |
| attendance at  |   |          |       |        |         |          |
| Board Meetings |   |          |       |        |         |          |
| in 2006: 3     |   |          |       |        |         |          |
| times          |   |          |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
| Mr. Chachchon  | 3 | BSC      | 0.449 | No     | D       | Siam     |
| Ratanarak      | 4 | E        |       | vember | irector | City     |
|                |   | conomics |       | 2006-  |         | Cement   |
| Director²      |   | (        |       |        |         | Public   |
|                |   | Honors), |       | P      |         | Company  |
|                |   | Royal    |       | resent |         | Limited  |
|                |   | Holloway |       |        |         |          |
|                |   | College, |       |        |         |          |
|                |   | Un       |       |        |         |          |
|                |   | iversity |       |        |         |          |
|                |   | of       |       |        |         |          |
|                |   | London   |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
|                |   |          |       | June   | Member  | P        |
|                |   |          |       | 2005 - | of the  | rimaVest |
|                |   |          |       | P      | Ex      | Asset    |
|                |   |          |       | resent | ecutive | Ma       |
|                |   |          |       |        | Co      | nagement |
|                |   |          |       |        | mmittee | Company  |
|                |   |          |       |        |         | Limited  |
+----------------+---+----------+-------+--------+---------+----------+
| Total          |   |          |       |        |         |          |
| attendance at  |   |          |       |        |         |          |
| Board Meetings |   |          |       |        |         |          |
| in 2006: -     |   |          |       |        |         |          |
| times          |   |          |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
| Mr. Prakob     | 6 | MBA      | -     | 1999-P | C       | Siam     |
| Visitkitjakarn | 7 | (        |       | resent | hairman | City     |
|                |   | Finance) |       |        | of the  | Cement   |
| Chairman of    |   |          |       |        | Audit   | Public   |
| the Audit      |   | Indiana  |       |        | Com     | Company  |
| Committee,     |   | Uni      |       |        | mittee, | Limited  |
| director²      |   | versity, |       |        | d       |          |
|                |   | USA      |       |        | irector |          |
+----------------+---+----------+-------+--------+---------+----------+
| Good           |   | The Role |       |        |         |          |
| Governance     |   | of       |       |        |         |          |
| Experience     |   | Chairman |       |        |         |          |
|                |   | Program  |       |        |         |          |
|                |   | (RCP),   |       |        |         |          |
|                |   | by Thai  |       |        |         |          |
|                |   | I        |       |        |         |          |
|                |   | nstitute |       |        |         |          |
|                |   | of       |       |        |         |          |
|                |   | D        |       |        |         |          |
|                |   | irectors |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
|                |   | Director |       |        |         |          |
|                |   | Certi    |       |        |         |          |
|                |   | fication |       |        |         |          |
|                |   | Program  |       |        |         |          |
|                |   | (DCP),   |       |        |         |          |
|                |   | by Thai  |       |        |         |          |
|                |   | I        |       |        |         |          |
|                |   | nstitute |       |        |         |          |
|                |   | of       |       |        |         |          |
|                |   | D        |       |        |         |          |
|                |   | irectors |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
| Total          |   |          |       |        |         |          |
| attendance at  |   |          |       |        |         |          |
| Board Meetings |   |          |       |        |         |          |
| in 2006: 5     |   |          |       |        |         |          |
| times          |   |          |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
| Mr. Chet       | 6 | B.Sc.    | -     | 1999-P | Member  | Siam     |
|  Raktakanishta | 6 | (Man     |       | resent | of the  | City     |
|                |   | agement) |       |        | Audit   | Cement   |
| Member of the  |   | Brigham  |       |        | Com     | Public   |
| Audit          |   | Young,   |       |        | mittee, | Company  |
| Committee,     |   | USA      |       |        | d       | Limited  |
|                |   |          |       |        | irector |          |
| Director²      |   |          |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
| Good Governa   |   | Audit    |       |        |         |          |
| nce Experience |   | C        |       |        |         |          |
|                |   | ommittee |       |        |         |          |
|                |   | Program  |       |        |         |          |
|                |   | (ACP),   |       |        |         |          |
|                |   | by Thai  |       |        |         |          |
|                |   | I        |       |        |         |          |
|                |   | nstitute |       |        |         |          |
|                |   | of       |       |        |         |          |
|                |   | D        |       |        |         |          |
|                |   | irectors |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
|                |   | Director |       |        |         |          |
|                |   | Certi    |       |        |         |          |
|                |   | fication |       |        |         |          |
|                |   | Program  |       |        |         |          |
|                |   | (DCP),   |       |        |         |          |
|                |   | by Thai  |       |        |         |          |
|                |   | I        |       |        |         |          |
|                |   | nstitute |       |        |         |          |
|                |   | of       |       |        |         |          |
|                |   | D        |       |        |         |          |
|                |   | irectors |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
|                |   | Co       |       |        |         |          |
|                |   | mpliance |       |        |         |          |
|                |   | Lea      |       |        |         |          |
|                |   | dership, |       |        |         |          |
|                |   | by BAY   |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
| Total          |   |          |       |        |         |          |
| attendance at  |   |          |       |        |         |          |
| Board Meetings |   |          |       |        |         |          |
| in 2006: 5     |   |          |       |        |         |          |
| times          |   |          |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
| Ms.Chantana    | 5 | Diploma  | -     | June   | D       | Siam     |
| Sukumanont     | 7 | in       |       | 2004-  | irector | City     |
| Director³      |   | Business |       | P      |         | Cement   |
|                |   | Studies, |       | resent |         | Public   |
|                |   | The      |       |        |         | Company  |
|                |   | Center   |       |        |         | Limited  |
|                |   | for      |       |        |         |          |
|                |   | Economic |       |        |         |          |
|                |   | and      |       |        |         |          |
|                |   | P        |       |        |         |          |
|                |   | olitical |       |        |         |          |
|                |   | Studies, |       |        |         |          |
|                |   | UK       |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
|                |   | Advanced |       | 199    | Ex      | (same as |
|                |   | Ma       |       | 8-June | ecutive | above)   |
|                |   | nagement |       | 2004   | Vice    |          |
|                |   | Program, |       |        | Pr      |          |
|                |   |          |       |        | esident |          |
|                |   | Harvard  |       |        | (Ma     |          |
|                |   | Business |       |        | rketing |          |
|                |   | School,  |       |        | and     |          |
|                |   | USA      |       |        | Sales)  |          |
+----------------+---+----------+-------+--------+---------+----------+
|                |   |          |       | 199    | M       | Jal      |
|                |   |          |       | 5-1997 | anaging | aprathan |
|                |   |          |       |        | D       | Cement   |
|                |   |          |       |        | irector |          |
|                |   |          |       |        |         | Public   |
|                |   |          |       |        |         | Company  |
|                |   |          |       |        |         | Limited  |
|                |   |          |       |        |         | / Cement |
+----------------+---+----------+-------+--------+---------+----------+
| Good           |   | Director |       |        |         |          |
| Governance     |   | Accre    |       |        |         |          |
| Experience     |   | ditation |       |        |         |          |
|                |   | Program  |       |        |         |          |
|                |   | (DAP),   |       |        |         |          |
|                |   | by       |       |        |         |          |
|                |   |          |       |        |         |          |
|                |   | Thai     |       |        |         |          |
|                |   | I        |       |        |         |          |
|                |   | nstitute |       |        |         |          |
|                |   | of       |       |        |         |          |
|                |   | D        |       |        |         |          |
|                |   | irectors |       |        |         |          |
|                |   | Ass      |       |        |         |          |
|                |   | ociation |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
| Total          |   |          |       |        |         |          |
| attendance at  |   |          |       |        |         |          |
| Board Meetings |   |          |       |        |         |          |
| in 2006: 5     |   |          |       |        |         |          |
| times          |   |          |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
| Mr.Vanc        | 5 | Master   | 0.009 | June   | D       | Siam     |
| hai Tosomboon  | 8 | in       |       | 2004-P | irector | City     |
|                |   | Business |       | resent |         | Cement   |
| Director³      |   | Ma       |       |        |         | Public   |
|                |   | nagement |       |        |         | Company  |
|                |   | (MBM)    |       |        |         | Limited  |
|                |   | Asian    |       |        |         |          |
|                |   | I        |       |        |         |          |
|                |   | nstitute |       |        |         |          |
|                |   | of       |       |        |         |          |
|                |   | Ma       |       |        |         |          |
|                |   | nagement |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
|                |   |          |       | 199    | Exec    | (same as |
|                |   |          |       | 9-June | utive V | above)   |
|                |   |          |       | 2004   | ice Pre |          |
|                |   |          |       |        | sident  |          |
|                |   |          |       |        | (Subsid |          |
|                |   |          |       |        | iaries) |          |
+----------------+---+----------+-------+--------+---------+----------+
| Good           |   | Director |       |        |         |          |
| Governance     |   | Certi    |       |        |         |          |
| Experience     |   | fication |       |        |         |          |
|                |   | Program  |       |        |         |          |
|                |   | (DCP),   |       |        |         |          |
|                |   | by Thai  |       |        |         |          |
|                |   | I        |       |        |         |          |
|                |   | nstitute |       |        |         |          |
|                |   | of       |       |        |         |          |
|                |   | D        |       |        |         |          |
|                |   | irectors |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
|                |   | Director |       |        |         |          |
|                |   | Accre    |       |        |         |          |
|                |   | ditation |       |        |         |          |
|                |   | Program  |       |        |         |          |
|                |   | (DAP),   |       |        |         |          |
|                |   | by       |       |        |         |          |
|                |   |          |       |        |         |          |
|                |   | Thai     |       |        |         |          |
|                |   | I        |       |        |         |          |
|                |   | nstitute |       |        |         |          |
|                |   | of       |       |        |         |          |
|                |   | D        |       |        |         |          |
|                |   | irectors |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
| Total          |   |          |       |        |         |          |
| attendance at  |   |          |       |        |         |          |
| Board Meetings |   |          |       |        |         |          |
| in 2006: 5     |   |          |       |        |         |          |
| times          |   |          |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
| Mr.Leo         | 5 | Lic.     | -     | June   | M       | Siam     |
|  Mittelholzer  | 6 | oec.HSG, |       | 2004-  | anaging | City     |
|                |   |          |       | P      | D       | Cement   |
| Mana           |   | Un       |       | resent | irector | Public   |
| ging Director³ |   | iversity |       |        |         | Company  |
|                |   | of       |       |        |         | Limited  |
|                |   |          |       |        |         |          |
|                |   | St.      |       |        |         |          |
|                |   | Gallen,  |       |        |         |          |
|                |   | Swi      |       |        |         |          |
|                |   | tzerland |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
|                |   |          |       | 19     | Chief   | Holcim   |
|                |   |          |       | 99-May | Ex      | (        |
|                |   |          |       | 2004   | ecutive | Schweiz) |
|                |   |          |       |        | Officer | AG /     |
|                |   |          |       |        | (CEO)   | Cement   |
+----------------+---+----------+-------+--------+---------+----------+
|                |   |          |       | 199    | B       | Holcim   |
|                |   |          |       | 7-1999 | usiness | (        |
|                |   |          |       |        | D       | Schweiz) |
|                |   |          |       |        | ivision | AG /     |
|                |   |          |       |        | Manager | Cement   |
+----------------+---+----------+-------+--------+---------+----------+
| Good           |   | Good     |       |        |         |          |
| Governance     |   | C        |       |        |         |          |
| Experience     |   | orporate |       |        |         |          |
|                |   | Go       |       |        |         |          |
|                |   | vernance |       |        |         |          |
|                |   | T        |       |        |         |          |
|                |   | raining, |       |        |         |          |
|                |   | by       |       |        |         |          |
|                |   | Swiss,   |       |        |         |          |
|                |   | Italian, |       |        |         |          |
|                |   | and      |       |        |         |          |
|                |   | German   |       |        |         |          |
|                |   | Stock    |       |        |         |          |
|                |   | Exchange |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+
| Total          |   |          |       |        |         |          |
| attendance at  |   |          |       |        |         |          |
| Board Meetings |   |          |       |        |         |          |
| in 2006: 5     |   |          |       |        |         |          |
| times          |   |          |       |        |         |          |
+----------------+---+----------+-------+--------+---------+----------+

2. The Management of the Company who are Members of the Board of
Directors of the Subsidiary and Affiliated Companies, as of 31 December
2006

  -------------------- ------- ------------ ----- ----- ----- ------------ --------- -----
  Management           SCCC    Subsidiary                     Associated   Related   
                                                              Company      Company   

                               1            2     3     4     1            1         2

  Mr. Paul Heinz       /       /            X     X           /                      /
  Hugentobler                                                                        

  Mr. Veraphan         /                          /                        /         
  Teepsuwan                                                                          

  Mr. Leo Mittenholzer //      x            /     /     x                            

  Mr. Vanchai          //                   /     /           /                      
  Tosomboon                                                                          

  Ms. Chantana         //      /            /           /                            
  Sukumanont                                                                         
  -------------------- ------- ------------ ----- ----- ----- ------------ --------- -----

Remarks: “/” = ordinary director “//” = executive director “X” =
chairman of the Board

SCCC = Siam City Cement Public Company

Subsidiries

  1 = Siam City Concrete Company Limited

  2 = Conwood Company Limited

  3 = Eagle Cement Holdings Company Limited

  4= Khmer Cement Industry Company Limited

Associated

  1 = Lanna Resources Public Company Limited

  Related Company:

  1 = Sunrise Equity Company Limited

  2 = Thai Roc-Cem Company Limited