Howell Laboratories, Inc. announces the appointment of David T. Roberts as Director of Commercial Engineering, Marine Products. Roberts joins Howell from Bath Iron Works, where he was responsible for hull outfit systems for the Zumwalt destroyers. He had previously been a Senior Project Engineer for Fiber Materials, Inc. and Lanco Assembly Systems. He has over twenty-five years of experience in manufacturing, design and automation. Roberts is a graduate of the University of Maine with a B.S. in Mechanical Engineering.