This industry comprises establishments primarily engaged in manufacturing pulp from any material, by any process. These establishments sell or transfer the pulp to separate paper-making establishments; they do not make it into paper themselves. Establishments that process waste paper into pulp (de-inking plants) are included.

This industry comprises establishments primarily engaged in manufacturing paper, other than paperboard. Establishments that manufacture paper in combination with pulp manufacture or paper converting, are included.

This industry comprises establishments primarily engaged in manufacturing paperboard. Establishments that manufacture paperboard in combination with pulp manufacture or paperboard converting, are included.