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Australia coal mine 'could threaten Great Barrier Reef'

29 July 2014 Last updated at 06:16 BST

The Australian government has approved the development of what could potentially be the country's biggest coal mine.

It is a decision that has angered environmentalists who say polluted water from the mine could threaten the Great Barrier Reef.

The government says strict environmental conditions would be imposed.

Jenny Wivell reports.