An industrial fire in Mount Maunganui was in a cement tower under demolition at the now unoperational Firth plant.
Thick black smoke and flames were seen coming from the building on Macrae Ave just before midday today.
The fire was now under control.
A Firth spokesperson said the fire started during demolition of the batch plant tower at their old Mount Maunganui concrete plant.
"The tower is a standalone structure on our old site which is no longer in operation. Staff working on the demolition of the tower at the time were evacuated and are safe and unharmed," the spokesperson said.
"The fire service was called and quickly extinguished the fire."
A Fire and Emergency spokesman said they received a call alerting them to the fire around 11.45am which was well-alight when they arrived.
"Initially three engines were sent to the scene, but this was eventually upped to eight," he said.
"There are now only four units at the scene, and an aerial firefighting crew were called from Hamilton."
No injuries were reported and the cause of the fire was under investigation.
A witness who was driving towards the Mount from Ōtumoetai said she could see the smoke billowing from a building she believed was the concrete company Firth.
"I said: 'That's got to be a fire'," she said.
"When we came over the bridge we could see it billowing behind us. I did see flames."
A staff member at nearby business AB Equipment said a technician had alerted staff of the fire nearby.
She said it was not a concern to people working close.
"It seemed to be contained quickly."
A police media spokeswoman said police were called to a building fire near Hewletts Rd in Mount Maunganui at 11.52am.