The HADES URL is the main research infrastructure for studies on geological disposal in Belgium. The Belgian URL is situated at the Mol nuclear area and is located in the Boom Clay formation at a depth of approximately 225 meters.

Today, the Economic Interest Grouping (EIG) EURIDICE is in charge of the management and the exploitation of the HADES URL. The EIG EURIDICE is an economic partnership between the Belgian Agency for Radioactive Waste and Enriched Fissile Materials NIRAS/ONDRAF and the Nuclear Research Centre SCK•CEN. Within MIND, the HADES URL will be used to retrieve borehole water samples from piezometers installed in the Boom Clay. These samples will be distributed to MIND partners to use as a Boom Clay microbial inoculum.