A St John spokesperson said they sent two ambulances and two support vehicles to Handley Industries, a manufacturer of coatings and adhesives, in Hillside Rd, at 11.33am.
A WorkSafe spokesman said they were making initial inquiries: “Note, this is not an investigation at this stage.”
Handley Industries general manager Stuart Ewington told the Herald the company is also investigating.
He said the pair were in a “confined area not designed to be accessed” and succumbed to fumes.
“We called emergency services straight away. We provided our safety data sheets to ambulance officers and [the workers] were taken to hospital.
“We take the safety of our staff extremely seriously and we will be working to improve our processes. We’re working with WorkSafe to investigate and make those improvements,” he said.