. Activities handbook. Veterinary medicine. One of cobalt-OO units lor sterilizing jnipae of temperature and humidity conditions. At 5'/2 days ±6 hours of age, pupae were sterilized by being placed in a cobalt-60 unit where they were irradiated with 8,000 roentgens of gamma rays. After irradiation, pupae were packaged in cardboard cartons. The cartons were first stored for a day or two until the flies emerged and then were transported to dispersal centers and loaded in aircraft, from which they were dr()i)ped over the screwworm-infested areas. Twenty airplanes, each equipped
. Activities handbook. Veterinary medicine. One of cobalt-OO units lor sterilizing jnipae of temperature and humidity conditions. At 5'/2 days ±6 hours of age, pupae were sterilized by being placed in a cobalt-60 unit where they were irradiated with 8,000 roentgens of gamma rays. After irradiation, pupae were packaged in cardboard cartons. The cartons were first stored for a day or two until the flies emerged and then were transported to dispersal centers and loaded in aircraft, from which they were dr()i)ped over the screwworm-infested areas. Twenty airplanes, each equipped with an auto- matic carton-dispersing apparatus, were used in this oi) N H0216 Pupae being separated from larvae by sifting. Pui)ae are automatically measured into cardboard cai'tons. 17. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Agricultural Research Service. Animal Disease Eradication Division. [from old catalog]. Washington, Agricultural Research Service, U. S. Dept. of Agriculture
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