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Rain or Shine...

Monday 07 December 1998 01:02 GMT
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MEXICO CITY authorities extended a smog alert for the third successive day yesterday and tightened restrictions on car use in a bid to cut pollution levels.

The sprawling metropolis, home to 18 million people, often has severe air pollution due to exhausts from three million cars and hundreds of factories trapped in a bowl-shaped valley 7,350ft (2,250m) above sea level.

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