In Southern Japan, in 1968 a large number of people suffered by disfigurement of skin, discolouration, fatigue, numbness, respiratory distress, vomiting and loss of hair. – 10,000 people got affected & some died – Two groups of 121 people each were tested and results were as follows: • It was found that fried food using rice oil produced by Kanemi company was eaten which caused the problem • After 7 months of investigation…. – It was found that the presence of Polychlorinated biphenyl-PCB was the cause for the effects and it was present in the rice oil. – Rice Oil was heated at low pressure to remove the odour thro’ a heat exchanger and a liquid known as KANECHLOR which contained PCB was used for heat transfer – Pipes of the heat exchanger was corroded and led to leakage thro’ those pinholes. – In fact, Kanemi had been replenishing 27 kgs of lost PCB per month for sometime without realizing the seriousness. • Indirect path – this rice was used as chicken-feed and half of one million chickens that were fed died. Other Similar Effects: Plastic bakery wrappers containing PCB mixed with ground stale bread was used as chicken-feed and 140000 chickens had to be slaughtered in New York. PCB leaked into fishmeal from a heating system in North Carolina plant and 12000 tons of…