Wesfarmers subsidiary CSBP has announced that it will proceed with a $200 million expansion of its ammonium nitrate plant at Kwinana, despite a 33 per cent increase in costs from earlier estimates.

Wesfarmers subsidiary CSBP has announced that it will proceed with a $200 million expansion of its ammonium nitrate plant at Kwinana, despite a 33 per cent increase in costs from earlier estimates.