This report draws on the growing body of experience (both positive and negative) related to the preservation of documentation and the retention of essential skills required to successfully plan and carry out decommissioning activities. In selecting and organizing ‘lessons learned’, the report provides a timely reminder, to decision makers and practitioners alike, that a lack of attention to record keeping may result in a costly misallocation of resources and may present safety problems. The report focuses on the management and organization of such records.