After World War II, 120,000 tons of toxic materials, mostly phosgene and mustard gas, was sealed in ships and sunk at sea, some to the northwest of Northern Ireland.
Setelah Perang Dunia II, 120.000 ton bahan beracun, sebagian besar fosgen dan gas mostar, tersimpan dalam kapal - kapal dan tenggelam di laut, sebagian di sebelah barat laut Irlandia Utara.