Subject categories
Agriculture, Business, Commerce & Industry → Recycling (Waste, etc.)
Agriculture, Business, Commerce & Industry → Tires, Rubber
Climate, Environment, Natural Resources & Disasters → Recycling (Waste, etc.)
Communications, Infrastructure, & Transport → Recycling (Waste, etc.)
Communications, Infrastructure, & Transport → Tires, Rubber
Crafts & Visual Arts → Sculptors
Crafts & Visual Arts → Sculpture
Documentary
Documentary → Documentary films - United States
Educational & Instructional
Educational & Instructional → Educational films
Educational & Instructional → Instructional
Short films
Short films → Short films - United States