Metal in ancient shipwrecks has value for both historians and scientists.
via LiveScience.com http://www.livescience.com/42196-physicists-and-archaeologists-tussle-over-long-lost-lead.html
via LiveScience.com http://www.livescience.com/42196-physicists-and-archaeologists-tussle-over-long-lost-lead.html
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