Three people were hurt in an explosion at 3M's sprawling manufacturing site in Hutchinson, Minnesota.
The Thursday afternoon incident happened when a piece of equipment had a "process upset its cooling process," 3M told BMTN, describing it as a "small incident."
There was no structural damage to the facility, but three people were hurt as a result.
One of them has serious but non-life-threatening injuries, and was taken to a local medical center by ambulance before being airlifted to Hennepin County Medical Center.
Two others suffered minor injuries.
Hutchinson is Maplewood-based 3M's biggest plant in the country, and it manufactures a huge range of its product line including for brands like Scotch, Post-It, and various other tapes, films and adhesives.
Hutchinson Police Chief Dan Hatten told the Hutchinson Leader he wasn't aware of any risk of chemical exposure as a result of the explosion.