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     * Ligne n°39 : * Story Resources
     * Ligne n°43 : * What are radioactive sources?
     * Ligne n°44 : * What are "orphan sources"?
     * Ligne n°45 : * How many radioactive sources are there worldwide?
     * Ligne n°46 : * When are radioactive sources hazardous?
     * Ligne n°47 : * Are radioactive sources being smuggled?
     * Ligne n°48 : * Can radioactive sources be detected?
     * Ligne n°54 : * How do radioactive sources look?
     * Ligne n°56 : What are radioactive sources?
     * Ligne n°58 : Radioactive sources are used throughout the world for a wide variety
     * Ligne n°60 : and education, and in military applications. These sources utilize
     * Ligne n°62 : suitable capsule or housing; although some sources involve radioactive
     * Ligne n°66 : radium-226, were generally available for sources. Since then,
     * Ligne n°71 : Radioactive sources vary widely in physical size and properties, the
     * Ligne n°77 : The IAEA has categorized radioactive sources, to identify those types
     * Ligne n°80 : sources - typically cobalt-60, caesium-137, strontium-90, and
     * Ligne n°84 : the many applications of radioactive sources are high, in the billions
     * Ligne n°94 : What are "orphan" radioactive sources?
     * Ligne n°96 : Radioactive sources that are outside of regulatory control are called
     * Ligne n°97 : "orphan sources" for short. They may never have been subject to
     * Ligne n°100 : Some sources may not be formally "orphaned" but their control may be
     * Ligne n°107 : or even detect the theft of radiation sources. Half of these countries
     * Ligne n°110 : capabilities to control and regulate radioactive sources.
     * Ligne n°118 : How many radioactive sources are there worldwide?
     * Ligne n°120 : Millions of radioactive sources have been distributed worldwide over
     * Ligne n°124 : in use; about 12,000 industrial sources for radiography are supplied
     * Ligne n°126 : sources for industrial applications are in operation.
     * Ligne n°133 : When are radioactive sources hazardous?
     * Ligne n°135 : In normal and regulated use, radioactive sources pose no undue
     * Ligne n°137 : radiation sources are involved in accidents, and if they become
     * Ligne n°138 : damaged or lost. Some of these sources contain large amounts of
     * Ligne n°144 : radioactive sources that caused deaths or injuries. The incidents have
     * Ligne n°156 : Are radioactive sources being smuggled?
     * Ligne n°160 : sources and other radioactive materials, including nuclear materials.
     * Ligne n°169 : Can radioactive sources be detected?
     * Ligne n°171 : Radioactive sources can be detected and their movement monitored. The
     * Ligne n°173 : emitted by the source and also on the possible presence of shielding
     * Ligne n°177 : Fortunately, the most intense and dangerous sources normally are the
     * Ligne n°235 : requirements relating to the security of sources. While the security
     * Ligne n°242 : sources.
     * Ligne n°245 : includes requirements relating to the security of sources. Although
     * Ligne n°265 : to radioactive sources, illicit trafficking, and other aspects of
     * Ligne n°266 : nuclear security. The IAEA has categorized radioactive sources to
     * Ligne n°269 : to emergencies involving radioactive sources that may cause deaths or
     * Ligne n°287 : How do radioactive sources look?
     * Ligne n°289 : Radioactive sources come in various shapes and sizes. The
     * Ligne n°290 : international radiation symbol is used to indicate that the source is