The Screen Machine portable screening and shredding equipment is manufactured in Columbus, Ohio. The Screen Machine is the largest manufacturer of portable, tracked shredding and screening plants in North America. A complete line of mobile screeners, shredders, screening plants, radial stacking conveyors, trommel screens and impact crushers are manufactured for the aggregate, construction, remediation, recycling, topsoil, mining, quarry, asphalt and concrete industries. These products are distributed through an extensive worldwide dealer network.