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Roman, Large Iron Borer or File, 1st - 3rd Century A.D.
Another piece from the same group as this borer was dated by the Lawrence Livermore National Laboratory to 120 A.D. with a probable range of 80 A.D. - 160 A.D. Testing was done using an innovative technique which measures the carbon isotope ratio of the trace carbon in the iron. This carbon comes from the wood used in the production of the iron which must be of essentially the same age as the tool itself. Results were published in the journal, Radiocarbon, Summer 2001.
Catalog current as of Monday, July 15, 2019.
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