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227,000 tonnes of oil wash up on 400 kilometres of French coastline when the Liberian-registered supertanker sinks off Brittany.
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Around one million tonnes is estimated to have spilled when Iraqi forces set fire to Kuwaiti oil wells. Hundreds of kilometres of coastline are polluted.
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The British ship carrying 132,000 tonnes of oil sinks with its 27-member crew in the Atlantic, 1,300 kilometres from the Canadian coast.
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An oil rig explosion, operated by BP in the Gulf of Mexico, leaves 11 dead and leads to the spillage of more than 600,000 tonnes of oil.