Disaster

The Chemical Scythe (1x4)

Air date: Jan 30, 1997

For years Britain's 50,000 sheep farmers and workers have been regularly using a dip containing organophosphate chemicals to rid their animals of parasites. The chemicals are, however, related to nerve gas, and dozens of people have become ill as a result. One of them is animal health inspector Peter Tyrer, who since 1994 has been unable to work and who has been carrying out an investigation into the chemicals.