Plastic stands for designed materials, chemically synthesized for massive use in industry and commerce. As plastic production continues to accelerate, plastic waste is incinerated, globally, as a preferred—though contested—technology for disposal. Burning plastic can be harmful; many associated chemicals, including those produced by burning certain plastics, are potentially toxic. They accumulate in bio-geological environments, known to entail serious health effects in humans for generations. Thus, matters of containment—emission filtration, limiting exposure, spatial localization, and so on—assume technopolitical significance.