Administrative appeal dismissed for late filing due to failure to collect registered mail during absence.

The Council of State declared the appellant's administrative appeal inadmissible because it was filed outside the statutory six-week deadline. The appellant argued that a renewed mailing of the enforcement decision should reset the time limit, but the court held that only the initial valid service starts the period. Furthermore, the appellant failed to prove that their representative's inability to collect the registered mail during a period of absence constituted an excusable delay under the General Administrative Law.