title: Copper artifacts from prehistoric archeological sites in the dakotas.
abstract: Thirteen archeological specimens were analyzed spectrographlically, and within defined limits they were determined to be native copper. Twelve of the specimens show close elemental homogeneity and are believed to be of Lake Superior ore; the origin of the other specimen is deviolus.
authors.forename: W E
authors.initials: WE
authors.lastname: Hill
authors.forename: R W
authors.initials: RW
authors.lastname: Neuman