Residents were evacuated from their homes yesterday morning because of the threat of toxic fumes from a chemical fire in Longlands, south of Hastings.
Fire crews were called to the Ballance fertiliser works in Longlands at 8.23am.
Fearing the worst, they ordered the evacuation of nearby residents and workers.
With St John on hand in case of injury, fire crews entered the smoke-filled 100m x 50m building which has a permanent hazardous chemicals sign, located down a private road off Maraekakaho Rd.
Hawke's Bay fire service area commander Chris Nichol said the fire was located by fire crews but they could not extinguish the flames using dry-powder extinguishers.