Poor white communities tend to be rural, away from the infrastructure that would support these types of industry. In general, no one builds out there, except fo

Poor white communities tend to be rural, away from the infrastructure that would support these types of industry. In general, no one builds out there, except for agriculture (which has its own issues; see the on-going fight over smell and water pollution in NC over pigs farming.) Poor black communities tend to be urban or suburban, right near the cities and commercial hubs where you'd want to build a chemical plant or industrial mill.