Science 1998 Nov;282(5391):1108-11
R. L. Burger, Peabody Museum of Natural History and Department of Anthropology, Yale University, Post Office Box 208277, New Haven, CT 06520-8277, USA. E-mail: R. B. Gordon, Department of Geology and Geophysics, Yale Uni.
Copper and gold artifacts in contexts dated to approximately 3120 to 3020 carbon-14 years before the present ( approximately 1410 to 1090 calendar years B.C.) recovered in excavations at Mina Perdida, Lurin Valley, Peru, show that artisans hammered native metals into thin foils, in some cases with intermediate anneals. Read More