BBC Cornwall, 1 November 2010:
A driver involved in the UK's worst mass water poisoning has told an inquest he had to guess which tank to put 20 tonnes of aluminium sulphate in.
It affected the drinking water of about 20,000 homes in Camelford, Cornwall, causing rashes, diarrhoea, mouth ulcers and other health problems.
Carole Cross, 59, who lived in Camelford at the time of the poisoning in 1988, died 16 years later.
Large amounts of aluminium were found in her brain after her death in 2004.