Morrisonville was a small town in Iberville Parish, Louisiana, United States that was contaminated with industrial pollution from a nearby Dow Chemical Company vinyl chloride factory. The town's residents — predominantly African American — were relocated in 1990 to Morrisonville Estates in Iberville Parish and Morrisonville Acres in West Baton Rou…Morrisonville was a small town in Iberville Parish, Louisiana, United States that was contaminated with industrial pollution from a nearby Dow Chemical Company vinyl chloride factory. The town's residents — predominantly African American — were relocated in 1990 to Morrisonville Estates in Iberville Parish and Morrisonville Acres in West Baton Rouge Parish by Dow.