The dental remains of 25 enslaved Africans from the site of Newton’s Plantation, on Barbados, were subjected to isotope analysis. Previous research had pointed out that the locally born individuals were subjected to high concentrations of lead poisoning. A new study, done by Dr. Jason Laffoon among others and published in the American Journal of Physical Anthropology, employed isotope analysis to find the source of the poisoning.
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Source: Phys.org