Grinding upwards towards yourself is dangerous for many reasons. This is one example.
This occurred during a handaxe production test designed, filmed and accessed by post doctorate researcher Nada Kreisheh in the Learning to be Human project.
Incident occurs at 4.15 mins.
Yet again, some tough grainy material from Seaton beach. But, after a few full-face Solutrean-esque flake removals, the end is clear
Julie Gill from Bournemouth University has her first experience flaking a biface core
I found a large grainy flat shore-warn flint knodule along Seaton beach and, after some pretty hefty blows, eventually knapped this useful kitchen knife. This deserved some heat treatment!