some extent." All packages, persons, and letters returning frq@m the area were probably contaminated in excess of background radiation. [For this reason, the sale to the general public of shipping containers from the PPG was restricted. Interstate Commerce Commission regulations required that ajl shipments of radioactive isotopes in commercial carriers be packaged so fhat no significant alpha or beta radiation would be emitted from the extdrior of the package, and the gamma radiation emission at any surface of th@ package was required to be less than the equivalent of 0.010 R of radium g tion (filtered through 0.5 inch [1.27 cm] of lead) for 24 hourg. This meant, in many cases, a holding period in excess of 4 months ffom the release from contaminated storage to the acceptable shipment of mon carrier in the United States. jtems by con- Because agencies often coulg out this decay period, courier service was utilized. Courier not wait gervice was not subject to ICC regulations unless a common carrier was useq. These shipments had to comply to CJTF regulations on transport of radioactive materials. € Charts and maps were displayed at the Radsafe Office on th¢ Estes and on Parry Island to keep CJTF 7 staff apprised of the radiologigal situa- tion. This display included (Reference 17, Tab C): @ Hodographs and surface radex Airborne particle trajectory forecast Long-range fallout forecast chart Danger area and search area chart Transient shipping chart Native population chart (i.e., number of people on each populated atoll) Air radex chart Cloud-tracking chart (records of inflight reports) Onsite radsafe situation charts Offsite radsafe situation chart Radiation intensities of task force ships Status of recovery of scientific experiments. 131