# Deep Geologic Repositories

A deep geological repository (DGR) is a facility constructed underground – usually at a depth of several hundred metres or more below the surface – in a stable rock formation to contain and isolate radioactive waste from the public and the environment for thousands of years.

## DGR research

Since 1978, the CNSC has been involved in independent research and assessment, including international collaboration, on the long-term management of used nuclear fuel in geological repositories.