This definition appears very frequently
Revision Includes: Revised to combine Argonne National Laboratory-West TBD into the Idaho National Laboratory TBD. Updated Intake and External Dose tables to add data from 2006 to 2008. Added 129I intake values to intake tables for all areas. Incorporates formal internal review comments. No changes were needed as a result of formal NIOSH review. Constitutes a total rewrite of the document.