Botany Zoology Medicine and Health Biochemistry Chemistry Pure Physics Applied Physics and Engineering Mathematics and Computers Earth and Space Sciences Entries in any of these categories, if nuclear-related, will be considered for AEC Special Awards at the International Science Fair. S-R-I Project exhibit size is limited to 30 inches deep (front to back), 48 inches wide (side to side), and 12 feet high (floor to top). Any project exceeding these dimensions is oversize and does not qualify for entrance in the ISF. R-I Each exhibitor must assemble his or her exhibit without major outside help, except for transportation and unpacking. S-R-I A typed abstract of the project, using not more than 250 words, is required and must be displayed with the project. S-R-I Anything which could be hazardous to public display is prohibited. This includes: Live poisonous animals may not be displayed. No dangerous chemical substances such as caustics, acids, highly combustible solids, fluids or gases may be displayed. If such materials are required, inert substitutes should be used. No open flames are permitted. Any project producing temperatures exceeding 100°C must be adequately insulated from its surroundings. Highly flammable display materials are prohibited. Tanks which have contained combustible gases must be purged with carbon dioxide. No combustible fuel may be displayed. High voltage equipment such as large vacuum tubes or dangerous ray-generating devices must be shielded and safety checked by a qualified inspector. Students should be cautioned in advance about the dangers of experimenting with such equipment and their work carefully supervised. S-R-I No live, warm-blooded animals may be displayed at the ISF. Projects involving the use of such animals may display photographs, drawings, charts or graphs to illustrate the conditions, developments, and results of the investigations. This eliminates the needless shipping, housing, care, harm, discomfort or loss of animals. S-R-I During judging the exhibit area is closed to all except judges and authorized personnel. Exhibitors may be present only at a specified time during which they are to remain at their exhibits. S-R-I All exhibitors must be interviewed at their projects by at least one judge. The purpose of all interviews is to determine the exhibitors’ familiarity with the project, the science involved, and to give the student an opportunity to meet the judges, react to questions and to discuss their work with a recognized leader. Care must be taken to allow a reasonable interview time within the time limits allotted for judging. I Not more than two students, male or female, may be certified as finalists to the ISF from an affiliated science fair. They must be students in 10th, 11th or 12th year classes in a public, private or parochial school. I