At Riverdale Mills in Northbridge, you quickly realize, they’re up to something big. James Knott Jr’s family business is wire mesh. In 1980, Riverdale started using wire to make lobster traps and that changed the lobster industry forever. Today, Riverdale PVC coated wire traps are the premier gear used by commercial fishermen from Canada to the Gulf of Mexico. Now Riverdale’s largest welding machine makes the worlds tallest and strongest security mesh, called WireWall®, that protects our southern borders and embassies overseas. (WATCH THE EPISODE HERE)