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A radiation alert was issued in Australia on Saturday [under / over] a missing radioactive capsule. The [waning / warning] was from authorities in Western Australia. State officials there warned [residence / residents] of a "radioactive substance risk" in several regions, including the [state / stated] capital Perth. The search is now on for [the / a] tiny capsule, which contains the [harmed / harmful] and radioactive substance Caesium-137. The capsule is just 8 mm high and 6 mm [width / wide] . However, it contains a sufficient amount of radioactive material [to / for] "cause serious health consequences". The capsule went missing as it was being transported from the mining town of Newman to a northeast [suburb / suburban] of Perth. Officials believe it fell through a hole in the truck transporting [them / it] .

Caesium-137 is used by the mining [industrial / industry] in Australia. The chief health officer for Western Australia, Andrew Robertson, urged [cautious / caution] to anyone finding the capsule. He warned: "Exposure [on / to] this substance could cause radiation [burns / barns] or severe illness. If people see the capsule or something that looks [similar / similarity] , stay away from it and keep [another / others] away from it too." He added: "If you are very close to the material or touch [them / it] , the radiation risk increases immensely and could cause [serious / seriousness] damage to your health, including causing radiation burns to [a / the] skin." Even being within a metre of the capsule could expose someone [to / in] radiation levels that are the equivalent of ten X-rays.