The investigation into the cause of the fire is “under way”, and manufacture of fertiliser on site is uninterrupted, Whitty said.
Fire broke out about 9.20am on Wednesday near the top of the ageing chimney stacks, which are to be replaced by a 55m-tall chimney.
A pall of black smoke was visible for many kilometres across the plains, flame were visible, and the passing section of State Highway 51 was closed to traffic for a short time.
Doug Laing is a senior reporter based in Napier with Hawke’s Bay Today, and has 51 years of journalism experience, 40 of them in Hawke’s Bay, in news gathering, including breaking news, sports, local events, issues, and personalities.