"The EPA has been successful in restricting five chemicals using section 6 authority (PCBs, CFCs, dioxin, asbestos, and hexavalent chromium) in its 38-year history,[33] with the ban on asbestos being overturned in 1991." https://en.wikipedia.org/wiki/Toxic_Substances_Control_Act_of_1976 …https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5734679/ …
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