Toxic CirclesWhen men and women who work with toxic materials get sick, everyone needs to worry. The toxic circles of industrial hazards spread in successive waves outward: from the workplace to the home, to the neighborhood, and to the community at large. These compelling essays tell how the links between cancers and working with radium, waxes, and dyes were uncovered and how poisoning from lead, mercury, dioxin, and chromium in and around the factory was