Classic Machines ScrapersClassic Machines: Caterpillar’s DW21 scraper revisitedCharles FairbairnFebruary 27, 2017August 14, 2018 by Charles FairbairnFebruary 27, 2017August 14, 2018 Born of necessity, the Caterpillar DW21, the great granddaddy of all Caterpillar 2-axle scrapers, went on to become a very successful scraper for Cat and
