Each separation plant consisted of four buildings: a process cell building or "canyon" (known as 221), a concentration building (224), a purification building (231) and a magazine store (213).
Hvert separationsanlæg bestod af fire bygninger: en bygning med procesceller eller "canyon" (kaldet 221), en koncentrationsbygning (224), en rensningsbygning (231) og et lager (213).