AEW,
Well, there is the German Fleet at Scapa Flow. Terms of the WWI Armistice required the German Navy to move its fleet to Britian's Scapa Flow for eventual release to the various Allied nations. By late November 1918, 74 ships were there but dithering over who and how many each nation would get stalled the process. Rather than have his fleet officially surrendered by the Treaty of Versailles, Adm von Reuter hoisted flags to scuttle at 1000am, June 21, 1919. Almost all were sunk or beached and seven wrecks still remain. FWIW, here is what Wikipedia has:
"Minor salvage is still carried out to recover small pieces of steel. This low-background steel is used in the manufacture of radiation-sensitive devices, such as Geiger counters, as it is not contaminated with radioisotopes, it having been produced prior to any chance of nuclear contamination.[30]"
I bet that English Sheffield steel from the '50s is better than the stuff from China today. I hate to throw anything away, but ya can't save it all...
Jeff
74 & 75 TR6