an improved mobile batch plant that is entirely self - erecting and completely contained as operated between transport and functional modes by a single operator . a truck - towed main frame hingedly supports a tower assembly that includes cement storage and weigh bins and water storage and weigh tanks proximate a materials release point to be received by a mixer . an aggregate and / or sand hopper and conveyor are located forward on the main frame and these serve to move aggregate materials to the release point . a hydraulic linear actuator system operates to move the tower assembly between the vertical operational position and the horizontal transport position where conveyor and tower are compacted against the main frame .