On 31 July 2006, the Committee on Radioactive Waste Management (CoRWM), published its final report on long-term waste management. Its main recommendation was that geological disposal should be adopted. This would involve burial of high-level waste at 200 – 1000 metres deep in a purpose-built facility with no intention to retrieve the waste in the future. It was concluded that this could not be implemented for several decades, and that there were "social and ethical concerns within UK society about the disposal option that would need to be resolved as part of the implementation process". Such a repository should start to be closed as soon as practicable rather than being left open for future generations. Fourteen additional recommendations were also made.