rolled paper. in a "pig," a shielded container for sample transport (Figure 32), and returned his tool. Person No. 1 measured the radiation through the pig using a long-handled tool and this information was recorded. Per- son No. 1 returned the tool, then both No. 1 and No. 2 lifted the pig, whose lid closed automatically, from the cave with a carrying pole (Figure 33), carried it to a third trailer 25 feet (8 meters) away, and deposited it in a shielded box. This operation was repeated on the second sample pod, then the next aircraft, until all filters were removed. Since double~squeegee samples were already bottled and the system used quick-disconnect couplings, recovery time was generally less than 2 minutes after opening the gun-deck hatch (Reference 29, Chapter 8). Snap-bag sam- Ples were recovered by pumping the sample bag contents through the sampling probe as illustrated in Figure 34. Some of the filter paper samples were loaded aboard R-6D aircraft for departure to the continental United States at about H+6 (Flyaway 1). Other filter paper samples and gas samples were ferried by TG 7.4 light aircraft to the TG 7.1 laboratory on Parry Island for immediate analysis and/or processing. Flyaway 2. Additional filter paper samples left the PPG at about H+10 aboard Flyaway 3 departure was between H+24 and H+36 and normally car- ried only gas samples. Flyaway 4 departed between D+4 and D+5. U.S. Air Force involvement with samples in the continental United States was through the 1009th Special Weapons Squadron team at McClellan AFB, California, and contractor laboratories in Chicago and Boston (Reference 22, Annex D). Personnel Decontamination TU 7 of TG 7.1 (7.1.7) organized decontamination operations to protect personnel against the effects of radiological contamination by reducing the amounts of radioactive material carried into nonradioactive areas. Checkpoints through which all entries and exits were controlled enabled personnel, protective gear, and equipment to be directed to one of the decontamination centers if required. 144