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The Batching Division of Columbia Machine Inc. has developed a line of Concrete Spreaders suited for concrete placement in many prestress applications (note this month's cover story, pages 22-26). They employ either hydraulic gates or VFD-controlled electric driven augers to place mixes, and can accommodate both long line and carousel applications. The Columbia Spreaders feature an integral concrete surge hopper, self-contained control system, on-board automation controls, on-board hydraulic power unit (for gate operation), and floor mount or suspended rail supports with VFD controlled movement. www.columbiamachine.com