Below article explains what they are after - “low background steel” - steel produced before post WWII atomic testing put very low amounts of radioactive cobalt into the atmosphere, used in very sensitive medical and military applications
Ironic that china is desecrating western war graves to fuel 21s century economic and technical war against the West
As the equipment used to legally salvage ships from the bottom of the ocean improves, the danger to Pacific shipwrecks will only increase. Vessels protected by the depths may soon lose that protection unless countries that control the territorial waters begin protecting these historic sites.
That was my first thought
Fascinating.
Thank you!