Bleached paperboard; bleached linerboard for corrugated cardboard

woodworking measuring tools and gauges

MATERIAL TO BE USED AS AN INGREDIENT FOR CONCRETE, MORTAR, AND THE LIKE TO IMPROVE THE PROPERTIES THEREOF, AND PARTICULARLY TO IMPROVE THE HARDNESS, TO INCREASE RESISTANCE TO WEAR AND CORROSION, AND TO LENGTHEN THE LIFE OF STRUCTURES MADE THEREFROM