- FEBRUARY 2006 - 1959 Dempster Dinosaur One of the earliest trucks of it's type, the Dinosaur with detachable boxes of up to forty yards featured a hydraulic sliding hooklift, which was capable of "pushing" containers on to platforms at frame level. See the recently revised Dempster Album here at CRT for more information on these trucks 2/5/06 © 2006 Eric Voytko All Rights Reserved Photos from factory brochures/advertisements except as noted Logos shown are the trademarks of respective manufacturers