In February 1945, the German submarine U864 set off for Japan. It sank off the Norwegian coast with dozens of tons of mercury on board. How to cope with the useless and the “underwater Chernobyl”?
https://www.spiegel.de/geschichte/zweiter-weltkrieg-u864-norwegen-ringt-mit-den-folgen-von-hitlers-himmelfahrtskommando-a-e1b1e781-2c97-4824-afd7-34d0b5c64934#ref=rss