![Recycled artifacts from Buckboard Mesa (26Ny4892) illustrating later... | Download Scientific Diagram Recycled artifacts from Buckboard Mesa (26Ny4892) illustrating later... | Download Scientific Diagram](https://www.researchgate.net/profile/Daniel-Amick/publication/284687837/figure/fig5/AS:341381441703938@1458403086282/5-Recycled-artifacts-from-Buckboard-Mesa-26Ny4892-illustrating-later-flake-production.png)
Recycled artifacts from Buckboard Mesa (26Ny4892) illustrating later... | Download Scientific Diagram
![Ann Clarke on Twitter: "Classic hard hammer bulb of percussion. This flint pebble was probably whacked open at some point in the #BronzeAge From excavations at Cruden Bay, Aberdeenshire by @AliTheArchaeol https://t.co/GJTZegSFH8" / Ann Clarke on Twitter: "Classic hard hammer bulb of percussion. This flint pebble was probably whacked open at some point in the #BronzeAge From excavations at Cruden Bay, Aberdeenshire by @AliTheArchaeol https://t.co/GJTZegSFH8" /](https://pbs.twimg.com/media/Eh83g3MXYAAtVTf.jpg)
Ann Clarke on Twitter: "Classic hard hammer bulb of percussion. This flint pebble was probably whacked open at some point in the #BronzeAge From excavations at Cruden Bay, Aberdeenshire by @AliTheArchaeol https://t.co/GJTZegSFH8" /
![North of Kuruman on Twitter: "Did you know that bulbs not only help us to identify stones, but they can also tell us about HOW a tool was made? Hard hammer percussion ( North of Kuruman on Twitter: "Did you know that bulbs not only help us to identify stones, but they can also tell us about HOW a tool was made? Hard hammer percussion (](https://pbs.twimg.com/media/E3hk1wYUUAwbiAT.jpg)
North of Kuruman on Twitter: "Did you know that bulbs not only help us to identify stones, but they can also tell us about HOW a tool was made? Hard hammer percussion (
![Jastrzębia Góra 4: example of direct percussion with both hard and soft... | Download Scientific Diagram Jastrzębia Góra 4: example of direct percussion with both hard and soft... | Download Scientific Diagram](https://www.researchgate.net/profile/Dominik-Plaza-2/publication/261008679/figure/fig5/AS:392387009499140@1470563761208/Jastrzebia-Gora-4-example-of-direct-percussion-with-both-hard-and-soft-hammer-on-soft.png)
Jastrzębia Góra 4: example of direct percussion with both hard and soft... | Download Scientific Diagram
Why Levallois? A Morphometric Comparison of Experimental 'Preferential' Levallois Flakes versus Debitage Flakes | PLOS ONE
![Blades produced via hard hammer direct freehand percussion with core... | Download Scientific Diagram Blades produced via hard hammer direct freehand percussion with core... | Download Scientific Diagram](https://www.researchgate.net/profile/Anthony-Boldurian/publication/238448935/figure/fig3/AS:669046991241248@1536524641933/Blades-produced-via-hard-hammer-direct-freehand-percussion-with-core-hand-gripped-firmly.png)