From David Wheeler, Carlisle, Cumbria, UK
Further to your look at the rising cost of a proposed underground deposit for nuclear waste in the UK, the site remains undecided (5 March, p 19). Nuclear waste needs to be buried in a rock that is impermeable, flexible (so it won’t form fissures through which material can leak), of reasonable depth and with good transport links. The London Clay would seem to be ideal.
