Representative flakes made from quartzite (a), chert (b) and basalt (c). The Instron 3345 tensile testing machine used during the controlled cutting tests (d). A quartzite flake, prior to being used to cut, is clearly depicted, along with the metal framework and PVC tubing (e).
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- Early humans revealed to have engineered optimized stone tools at Olduvai Gorge, Wednesday, January 8, 2020 - 12:00