GREEN BAY - The investigation continues concerning an incident at a Green Bay chemical company.
Hazmat crews were called to a report of smoke outside the Carboline Company around 8:30 Monday morning.
The plant is located on Elizabeth Street, between Main Street and University Avenue.
Green Bay Metro Fire Crews doused six smoking drums Monday morning from the ground and overhead.
"We're here cooling those two mixtures, inhibiting the chemical reaction that's taking place," said Lt. Nick Craig, Green Bay Fire Department.
Lt. Nick Craig says workers at Carboline improperly mixed chemical coating ingredients Sunday night or early Monday morning.
"When they realized that they probably shouldn't have been mixed inside the plant, they were put into six, 55-gallon drums and brought outside. Obviously it took a while for the reaction to get started, and that's when the light smoke happened about 8:30 this morning when we were finally called," said Craig.
Workers were evacuated. The Brown County Hazmat team was called in as well.
"You really need to do a bunch of investigating to figure out whether you're dealing with a potential fire, reactivity with water, or any types of hazards," said Craig.
Fire crews say the air quality levels were tested at local schools, and in the neighborhood. Those levels came back safe, but people were encouraged to stay inside.
"They said you're okay for right now, just we'll let you know if you need to leave," said Mark Guns, Green Bay.
No one was hurt in the incident. After four hours, the scene was cleared, and the barrels were left to simmer.
"Why those two products were mixed together here on site is the question that we're still looking for the answer for," said Craig.
Carboline released a statement late Monday afternoon.
The company said an internal investigation is underway to learn how to prevent similar situations in the future.
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