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Sawmill points most striking feature is edge sharpening with fine parallel oblique pressure flaking.
Radiometric dating--the process of determining the age of rocks from the decay of their radioactive elements--has been in widespread use for over half a century.
There are over forty such techniques, each using a different radioactive element or a different way of measuring them.
Two mammoth petroglyphs located on a site in southeastern Utah. Referred to as stone spheres, stone balls, petro-spheres, and locally as los bolas. George is known for his ability to finish points quickly.
They were discovered within a group of other petroglyphs that are believed to date sometime between the Pleistocene and Holocene periods approximately 13,300 to 12,500 years ago. In fact, some flintknappers call him "the rock monster" because he "devours rock" so quickly.