Dear Tom,
We actually do have quite a few possible Native American crucibles and molds, as described at the following website,
America's Mysterious Furnaces
Crucibles
Evidence crucibles used to melt copper for casting into artifacts was found by archaeologist Gregory Perino at the Cahokia Mound Group, as he reported in the Central States Archaeological Journal (V33, No. 1; January 1986). Cahokia, which flourished from 700 to 1400 AD, was an important center of the Missippian Period of the prehistoric North American Indians. This find at Cahokia State Historic Park has remained in relative obscurity since then.
And this one,
GarretMold
On Monday, June 30, 2003, the author, Willliam D. Conner, found what looks like a casting (two views above) inside its broken mold at the Garrett Site west of Chillicothe, Ohio.
[end quotes]So welcome to the alternative side of the American archaeology, where the professionals don't seem to be all that willing to go...
Perhaps they are afraid of new ideas?
Perish the thought!
Yuri.
Yuri Kuchinsky -=O=-
"It has also been a subject of remark, how extremely frequent is the intercourse which heretics hold with magicians, with mountebanks, with astrologers, with philosophers; and the reason is, that they are men who devote themselves to curious questions. "Seek, and ye shall find," is everywhere in their minds. Thus, from the very nature of their conduct, may be estimated the quality of their faith. In their discipline we have an index of their doctrine." -=O=- Tertullian -=O=- THE PRESCRIPTION AGAINST HERETICS, Ch. 43