EdwardS:
the large celt blade is 7" long, 2 1/2 " across the blade and is over 1/4" thick uniformly across the blade. I got the measurements form papers describing North American artifacts of copper. I can supply the source if you are interested.
Yosemite Ben: I need to PM you and ask about where to go/stay etc. for trip out west some day. I would love to see your park and learn from you about resource use out there.
thanks for looking guys.