By itself, radiologically protective construction is implemented by satisfying one or more of the following objectives: 1. Improving the inherent shelter effectiveness of structures 2. Minimizing the deposition and retention of fallout 3. Facilitating the removal of fallout. To this end, a number of protective principles are presented which can be either incorporated into the design of new buildings or applied to existing buildings.

The Nat. Inst. for Occupational Safety and Health conducts research to prevent work-related illness, injury, disability, and death. On Oct. 8, 2001, the Office of Homeland Security (OHS) was established, which develops and coordinate the implementation of a comprehensive nat. strategy to secure the U.S. from terrorist threats or attacks. In Jan. 2002, the OHS formed the Interagency Workgroup on Building Air Protection, which includes representatives from various fed. agencies, including NIOSH. This document is the result of building vulnerability assessments conducted by NIOSH in 2002, as well a significant content and review recommendations provided by Workgroup members. Illustrations.