In the early 1950s, Royal Dutch/Shell purchased land in the community of Diamond, Louisiana and built a chemical plant. Margie Richard, a Black resident of Diamond, founded Concerned Citizens of Norco (CCN) in 1989 after two large-scale accidents at the Shell/Motiva Chemical plant. A pipeline explosion in 1973 killed two Diamond residents, while another event in 1988 killed seven workers.
In 1978, Chemical Waste Management Inc. (CWM), a subsidiary of Waste Management Inc. (WMX), bought 300-acres of land near Emelle, Alabama for a hazardous waste landfill. Residents did not have the opportunity to protest the landfill prior to its construction because CWM was not legally obligated to disclose information about land use.