The document describes the responsibilities and procedures for three document controller chief positions held by the author. The positions were for engineering projects in China and Saudi Arabia between 2005-2014. Key responsibilities included developing document control procedures, receiving and distributing drawings and documents between contractors and subcontractors, maintaining logs and filing systems, and ensuring timely communication and traceability of project information. Procedures focused on prompt and accurate distribution of all project documents and maintaining integrity and completeness through both electronic and physical filing systems.