The Mobile Twin Shaft combines the simplicity of dry-batch plants with the superior mixing quality of a twin shaft mixer. The mixer is installed on a mobile trailer unit and placed under a dry-mix plant for batching and mixing. A standard recipe requires only 30 seconds of mixing time. Mixed concrete is discharged onto a concrete discharge belt, which loads directly into a dump or mixer truck. No special modifications are required to the dry-mix plant. Liebherr Concrete Technology. 757-928-8547. www.liebherr.com [WOC Booth N137]