Mining giant BHP has failed to meet environmental conditions of its licence for the world's biggest open-cut iron ore mine in Western Australia's Pilbara region.
BHP's environmental report to the regulator, the Department of Water and Environmental Regulation, revealed dust levels exceeded its licence limits at Mount Whaleback on 45 days in 2018-19.
As part of its licence, the company reports to the department on dust levels in the nearby town of Newman, which is surrounded by BHP's iron ore mines.
The ABC has obtained the miner's latest annual environment report for Mount Whaleback. It is not available to the public.
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