**EXHIBIT 21**

**SUBSIDIARIES OF THE REGISTRANT**

The following is a listof all subsidiaries, wholly owned except where noted, owned by the Registrantor one or more of its other subsidiaries at July 31, 2006:
| Corporate Name of Subsidiary                                 | ** ** | **State or Country of Incorporation** |
|--------------------------------------------------------------|------------|---------------------------------------|
|                                                         |       |                                  |
| Inupiat Geophysical LLC (45%  owned)                         |       | Alaska, U.S.A.                        |
| ALITHEIA RESOURCES INC.                                      |       | Delaware, U.S.A.                      |
| Veritas DGC Asia Pacific Ltd.                                |       | Delaware, U.S.A.                      |
| Veritas DGC Land Inc.                                        |       | Delaware, U.S.A.                      |
| Veritas Geophysical Corporation                              |       | Delaware, U.S.A.                      |
| Veritas Geophysical (Mexico)  LLC                            |       | Delaware, U.S.A.                      |
| Veritas Investments Inc.                                     |       | Delaware, U.S.A.                      |
| Viking Maritime Inc.                                         |       | Delaware, U.S.A.                      |
| Hampson Russell GP Inc.                                      |       | Alberta, Canada                       |
| Hampson Russell Limited  Partnership                         |       | Alberta, Canada                       |
| Time Seismic Exchange Ltd.                                   |       | Alberta, Canada                       |
| Time Seismic Leasing Ltd.                                    |       | Alberta, Canada                       |
| Veritas Energy Services Inc.                                 |       | Alberta, Canada                       |
| Veritas Energy Services  Partnership                         |       | Alberta, Canada                       |
| Veritas MacKenzie Delta Ltd.                                 |       | Alberta, Canada                       |
| Veri-Illuq Geophysical Ltd.  (49% owned)                     |       | Northwest Territories, Canada         |
| Yamoria Geophysical, Ltd. (49%  owned)                       |       | Northwest Territories, Canada         |
| Veritas Geophysical (Canada)  Corporation                    |       | Nova Scotia, Canada                   |
| Guardian Data Seismic Pty  Limited                           |       | New South Wales,  Australia           |
| Veritas DGC Australia Pty.  Ltd.                             |       | Australia                             |
| Veritas do Brasil Ltda.                                      |       | Brazil                                |
| Veritas DGC (B) Sdn. Bhd.                                    |       | Brunei                                |
| Veritas Geophysical III                                      |       | Cayman Islands                        |
| Veritas Geophysical IV                                       |       | Cayman Islands                        |
| Exploraciones Geofisicas  Veritas Geophysical Chile Limitada |       | Chile                                 |
| Veritas Geophysical (Chile)  S.A.                            |       | Chile                                 |
| Veritas Geophysical (France)  SARL                           |       | France                                |
| Veritas DGC Land Guatemala  S.A.                             |       | Guatemala                             |
| P.T. Veritas DGC Mega Pratama  (80% owned)                   |       | Indonesia                             |
| Viking Global Offshore Limited                               |       | Jersey, Channel Islands               |
| Veritas Caspian LLP (50%  owned)                             |       | Kazakhstan                            |
| Veritas DGC (Malaysia) Sdn.  Bhd. (70% owned)                |       | Malaysia                              |
| Veritas Energy Services  (Nigeria) Limited                   |       | Nigeria                               |
| Digicon (Nigeria) Ltd. (60%  owned)                          |       | Nigeria                               |
| Veritas Geophysical (Nigeria)  Limited (60% owned)           |       | Nigeria                               |
| Veritas Geophysical Services  (Norway) AS                    |       | Norway                                |
| Veritas DGC (Mexico) S. de  R.L. de C.V.                     |       | Mexico                                |
| Veritas Servicios Geofisicos  S. de R.L. de C.V.             |       | Mexico                                |
| Veritas Servicios Technicos S.  de R.L. de C.V.              |       | Mexico                                |
| Veritas DGC Singapore Pte.  Ltd.                             |       | Singapore                             |
| Veritas Geophysical (Asia  Pacific) Pte. Ltd.                |       | Singapore                             |
| Veritas DGC Limited                                          |       | United Kingdom                        |
| Veritas Geophysical Limited                                  |       | United Kingdom                        |
| Veritas Geoservices Ltd. SA                                  |       | Venezuela                             |

 

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