some extent.” All packages, persons, and letters returning from 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 all shipments of radioactive isotopes in commercial carriers be packaged so that no significant alpha or beta radiation would be emitted from the exterior of the package, and the gamma radiation emission at any surface of the package was required to be less than the equivalent of 0.010 R of radium gamma radia~- tion (filtered through 0.5 inch (1.27 em] of lead) for 24 hours. meant, This in many cases, a holding period in excess of 4 months from the re- lease from contaminated storage to the acceptable shipment of items by common carrier in the United States. Because agencies often could not wait out this decay period, courier service was utilized. Courier service was not subject to ICC regulations unless a common carrier was used. These shipments had to comply to CJTF regulations on transport of radioactive materials. Charts and maps were displayed at the Radsafe Office on the Estes and on Parry Island to keep CJTP 7 staff apprised of the radiological situation. 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