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DALTON, Ga. -- Several people suffered from minor injuries after a chemical reaction caused an explosion at a plant in Dalton Monday morning.

It happened shortly after 8:30 a.m. at MFG Chemicals, in the 400 block of Callahan Road.

Our Chattanooga sister station WRCB reports the accident occurred during the production of a product called Coagulant 129, which is used in water treatment. It can cause skin or respiratory irritation.

According to Whitfield County 911 dispatch, the chemical reaction was non-toxic, but residents within a half-mile of the plant were asked to stay indoors for a couple of hours after the incident.

The force from the explosion tore a portion from the roof of the building.

According to Ralph Beau from the Beaulieu facility adjacent to the MFG property, 20 of his employees were affected by the chemical, and were being decontaminated, and being sent to Hamilton Medical Center for treatment.

Dalton police spokesperson Bruce Frazier says 47 people, including thepeople from the Beaulieu faclity,were being checked out atDalton's Hamilton Medical Centersince the chemical involved can cause some skin irritation and mild respiratory problems.

All but three people have been released; they are expected to be released tonight.