| How long has mankind has the bow and arrow?
I know that artisans in the prehistoric southwest (far away from any ocean) were drilling seashells with a stick twisted in a bow, long before electricity. Those original heishi have amazingly small holes.
Actually, so were South Americans so it is just a matter of tracing the drilling technology back.
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Caitlin  potamilus purpuratus American Pearl Mussel Where can I get a pearl from this mussel? |