The assortment of old bricks and building materials that Del's acquired from a demolished factory don't look very promising - until he discovers a huge quantity of lead panels among the rubble. Del and Rodney are even more surprised that the panels are actually sections of a DIY nuclear fall-out shelter, and bring the whole lot back to their flat. With the Cold War still very much looming, Rodney feels they ought to assemble it in preparation for the dreaded 4-minute warning. With this in mind, they seek an ideal location - preferably within 4 minutes from the Trotter household!
—stevecann2003