News - Nov 23, 2009

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November 23rd, 2009

More on Heat Treatment and Stone Tool Making

November 23, 2009

Two months ago scientists announced that heat treatment -  controlled baking of stone in order to improve it as a raw material for shaping into tools - had far earlier origins than had been thought previously.  See the article "Heat Treatment Makes Better Stone Tools", below.  We now have video discussing heat treatment, or fire hardening.

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