IN 1967 THE NATIONAL STEEL CAR CORPORATION STARTED BUILDING 70 TON 50' BOX CARS SPECIFICALLY DESIGNED FOR SHIPPING ROLLS OF NEWSPRINT FROM PAPER MILLS IN CANADA TO NEWSPRINT COMPANIES THROUGHOUT NORTH AMERICA. A TOTAL OF 3,592 CARS WERE MANUFACTURED BETWEEN 1967 AND 1971 FOR SIX RAILWAYS. THE VAST MAJORITY OF THESE CARS REMAIN IN REVENUE SERVICE IN 2001. THE CARS HAVE AN INSIDE HEIGHT OF 11' 0" ENABLING NEWSPRINT ROLLS TO BE LOADED IN TWO TIERS. TO PROVIDE MAXIMUM PROTECTION TO THE BRUISEABLE NEWSPRINT ROLLS, THE CARS HAVE SMOOTH INTERIOR WALLS AND CUSHIONED UNDERFRAMES. THE CARS FEATURE AN ALUMINUM ROOF, NSC-DESIGNED CORRUGATED ENDS EITHER SMOOTH OR AN EXTERIOR-POST YOUNGSTOWN 9' WIDE PLUG DOOR. THERE ARE SEVERAL MINOR VARIATIONS FOR THIS CAR.