The DEMAT @ MIANTE platform referred to in Article R. 4412-133 is used to notify the certifying bodies of the following:
-every month, at the latest by a date fixed by contract between the employer and his certifying body or bodies, the list, for the coming calendar month, of operations involving the removal or encapsulation of asbestos or materials, equipment, materials or articles containing it, and, for each of them, the phasing of activities by work zone, understood as the succession of the preparatory work phase, the asbestos treatment phase and the withdrawal phase;
-any changes to the phasing of activities immediately.