Secrets of the deep, deep tunnels where nuclear waste is buriedAlmost half a kilometre underground, engineers in Finland are about to sealradioactive material safely for ever. This is the world’s first deep geological disposal facility for nuclearfuel, a concept that has been discussed by engineers and politicians forhalf a century. That is amazing.”Martin Walsh, 51, head of engineering at Nuclear WasteServices, also on the visit, says: “Nobody disagrees that for the legacyfor nuclear waste in the UK, geological disposal is necessary.” The mostradioactive nuclear waste produced by Britain’s nuclear power stations willremain hazardous, Walsh says, “beyond our lifetime, and beyond thelifetime of our children and our children’s children”. In the UK,plans for a similar geological disposal scheme have experienced falsestarts because no council has yet agreed to host a site. In June, the newlyelected Reform leadership of Lincolnshire county council pulled the plug onlong-running discussions to site a geological disposal site near thecoastal village of Theddlethorpe.