New Jersey: Giant crane dumping dust. Mechanical clamshell. Man with mask operating giant crane. Microscopic pieces of ore. “Purgolator” Products. Women in factories, with filters that look like accordion folded paper. A factory woman inspecting filters. Women assembling filters. Men apply adhesive. Man operating press for filters. Man in suit looking at screws. The track of an auto race showing how efficiently the filters work. Man with checkered flag at the finish line.