Aluminum processing, electroplating, lime kilns, rayon textile plants, etching and polishing of glass, chemical processing, manufacture of paints and dyes, soap making, timber preserving, laboratories, uranium enrichment, coal-fired utilities, fluorocarbon and fluoride production, ceramics and cement work, fertilizer manufacture, preserving food and wine, fiberglass manufacture, treatment of leather hides, petroleum distillation, pulp and paper manufacture, foundries, and smelters