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Robert Ziegler has over three decades of experience in engineering roles, currently serving as Chief Operating Engineer at DCO Energy since January 2011. Prior to this position, Robert Ziegler held the title of Chief Operating Engineer at Resorts Hotel & Casino for nearly 31 years, where responsibilities also included operating engineer duties. Earlier in the career, Robert Ziegler worked as an operating engineer at Stockton State College for a brief period in 1987-1988.