Emergency services were at the scene of a fire near a timber yard near Taupo.
Twelves fire trucks and 50 fire fighters were expected at the blaze. An eye witness at the scene said St John Ambulance was also at the fire. Cutting tools and heavy machinery could be seen also, possibly to gain better access to the fire.
Northern fire communications shift manager Megan Ruru said the fire was at the rear of the building. "We have a fire in the boiler house at Permapine," said Ruru. The building was 20m wide and 50m long. "It appears to used to hold sawdust. They've got a multiple number of crews working with hoses at this stage. They are managing to contain it."
Fire appears contained with crews dousing hot spots.