The real development is yet to come, on a scale which few people are capable of imagining. If this is really going to happen, there will be a continuous traffic in radioactive substances from the ‘hot’ chemical plants to the nuclear stations and back again; from the stations to waste-processing plants; and from there to disposal sites. A serious accident, whether during transport or production, can cause a major catastrophe; and the radiation levels throughout the world will rise relentlessly from generation to generation.