Riverdale Mills Corporation was established in 1980 as a manufacturer of weather-resistant and corrosion-resistant welded wire mesh. The company makes some of the toughest wire mesh products designed to withstand harsh conditions. Located in Northbridge, Mass., its manufacturing plant is a completely renovated mill building dating back to the 1840 s. This 350,000-square-foot facility includes extensive, state-of-the-art equipment, including computer controlled welders and drawing machines. The equipment is maintained to ensure precision manufacturing. Jim Knott founded Riverdale Mills Corporation and began making wire lobster traps to replace wooden ones. The company s product line has expanded to include agriculture fence, custom fences, land management barriers, aqua-mesh and WireWall fencing. WireWall was originally used for prisons, but has broadened to government, military and commercial markets. Marine products account for more than half of Riverdale Mills Corporation s sales.