One worker remains hospitalized, and two others were treated and released, following a minor explosion at a Minneapolis chemical plant this morning.
Minneapolis fire officials say three men were replacing a cap to a tank full of an acid-based chemical when the explosion occurred.
A spokesperson for Interplastics Corporation says employees reported a flash, smoke and loud bang, but no chemicals were released. Two workers were treated for second degree burns and released. A third worker was upgraded from critical to serious condition and is being held overnight for observation.
The spokesperson says the company is investigating the cause of the explosion.