1. Recycling, Plasma TV, Fireworks, Railroad Tracks, Ink
2. Salt Mines, Trainers, Ships, Watches, Wind Farms
3. Tires, Excavators, Newspapers, Ports, Contact Lenses
4. Internet Cable, Cranes, Pencils, Water, Toothpaste
5. Glass, Golf Balls, Zippers, Coke Cans, Tire Changes
6. Concrete, Cell Phones, Lightbulbs, Steel, Traffic
