MIDDLEBURY — Carbon monoxide poisoning has sent some workers from Forest River RV plant in Middlebury early this morning, Monday, Dec. 7.

Emergency crews were called around  7 a.m. to the plant were at least five were taken by ambulance to the hospital with around a dozen taken by bus.

Middlebury Fire Chief Jeff Wogman reports a furnace exhaust system had rusted through, causing fumes to go directly into the building. Many workers were suffering from headaches, nausea and other symptoms.

The plant employs approximately 140.