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For immediate release: January 10, 2005

MDA Helps To Monitor Disaster Sites In South Asia To Assess And Support Rehabilitation Efforts

Richmond, B.C. - MacDonald, Dettwiler and Associates Ltd. (TSX: MDA), a provider of essential information solutions, announced today that its space-based imagery is being used to assess damage and direct relief efforts to the areas affected by the December 26, 2004 tsunamis. MDA has donated more than 15 million square kilometres of imagery from its global NaturalVue imagery data set to the United Nations Office for the Coordination of Humanitarian Affairs and Department of State in support of disaster recovery and reconstruction efforts. The U.S. Department of State and U.S. AID have also received NaturalVue 15-metre imagery, and relief agencies in Japan, Germany and Australia have acquired NaturalVue imagery. In addition, the RADARSAT-1 satellite has been acquiring, and continues to acquire, imagery of the devastated regions to support efforts by international governments and aid organizations and agencies. Archived images of the affected regions are being compared with newly acquired imagery to locate and assess damage and to help direct relief and rescue efforts. RADARSAT's 500 square kilometre views can highlight and map the dramatic changes to coastlines due to impact of the tsunamis. This information is being used to understand the extent of the destruction to the mangrove swamps and coral reefs that act as protective barriers from wave erosion. RADARSAT is also collecting land surface information used to monitor and map flooding and locate areas of standing water - potential breeding grounds for mosquitoes carrying malaria. MDA has joined ESRI in creating an Indian Ocean Disaster Geospatial One-Stop portal to make a variety of resources available to anyone who needs them. These resources include many types of geographic data, map services, information about GIS projects in the region, lists of volunteers, and more. Image of SRI LANKA before/after Tsunami (small | large)

About MacDonald, Dettwiler and Associates Ltd. (MDA)

MDA (TSX: MDA) provides businesses and governments around the world with essential information solutions used for decision making. Operating from offices across Canada, the U.S. and the U.K., MDA is active in data collection, information extraction, and information distribution.

For more information, please contact:

Wendy Keyzer
MDA External Relations
Telephone: 604-231-2743

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