"They made lost-wax gold ornaments and arsenical copper (alloys of several copper mixtures and arsenic that can be described as a brass type), which is the closest material to bronze found in prehistoric New World archaeology and is attributed to be the precursor of the brass age in the north of Peru."
This section is quite innacurate, as the first tin-bronze cast in the New World dates to pre-Chavin cultures some time before 900 B.C.; It was also used in Meso America, beginning at the much later date of 600 A.D., to manufacture axes, bells, and other ceremonial/utilitarian objects. there is a wealth of information in the archaeological literature about the pre-columbian use of tin-bronze in both the Andes and Mesoamerica. The assertion that this techology was never developed in the New World is nonsense. WaynaQhapaq 00:30, 18 May 2007 (UTC)