According to Reuters on the 28th, the authorities of Western Australia said that a radioactive capsule used for mining operations was lost on the way to Perth, the capital of the state. At present, some regions of the state have issued "radioactive material risk" alerts. Earlier, the fire and emergency service department said that the silver capsule containing cesium-137 was lost on the way from the mine in northern Newman to the northeast suburb of Perth. It is reported that this substance is used in the instruments of mining operations, and exposure to this substance may cause radiation burns or radiation diseases. According to the Guardian, the relevant departments are currently searching for the "8mm" along the 1400 km section of the Great Northern Expressway × 6 mm "capsule. Darryl Ray, acting director of the Department of Fire and Emergency Services of Western Australia, said that the police had determined that the capsule was not taken away in criminal acts. At present, we are using radiation detectors to locate gamma rays, which will help us locate this small capsule. Andrew Robertson, the chief health officer of Western Australia, said that when people found that the capsule was missing, the screw on the protective device fixing the capsule was missing. He said that these instruments were designed to be strong and durable, and can be used in industrial environments affected by weather and vibration, so it was unusual for such instruments to be disassembled. He also urged anyone who found the capsule not to touch it, so as not to affect health. (Xinhua News Agency)