Many countries are investing in the development of geological repositories for the final disposal of radioactive waste with the overall objective of ensuring that these repositories are inherently safe and are designed to protect humans and the environment for long periods of time without the need for maintenance or human intervention. Within this context and as part of a responsible and sustainable approach to radioactive waste management, work has been undertaken by stakeholders in the international radioactive waste community to support efforts to advance the long-term maintenance of records, knowledge and memory (RK&M) of a geological repository particularly after its closure. As such, these efforts contribute to enabling future generations to make informed decisions over time regarding the repository and its contents as well as avoid inadvertent human intrusion. To that end, the Workshop on The medium and the message: Challenges and solutions in selecting and preserving records of radioactive waste aimed to explore in great depth issues related to the types of records that will need to be preserved, the application of archival concepts to nuclear records and the continued accessibility of radioactive waste management records over an extended timescale such as possibly hundreds of years.