Cyrielle Mathias is a postdoctoral researcher (HNHP–ComE and CRFJ laboratories) specialising in the early Middle Palaeolithic industries of the Mediterranean and Near East. She has developed specific experimental programs focused on recycling practices – particularly recycled percussion materials and cores-on-flakes – as well as the production and use of small tools. Laurence Bourguignon is a research engineer at INRAP and a member of the ArScAn–AnTET laboratory. Her work focuses on Lower and Middle Palaeolithic sites in southern France. As an expert flintknapper, she has a particular interest in Quina debitage and retouch strategies, as well as basalt knapping. Jérôme Ivorra, M.A., is a geologist affiliated with the GREPAM. He is part of the team excavating and studying the Lower Pleistocene site of Bois-de-Riquet (southern France). His research focuses on raw material procurement, and he has participated in numerous flintknapping experiments. Cyril Viallet is a CNRS researcher (ArScAn–AnTET laboratory) working on Middle Pleistocene sites in the Mediterranean region. He has developed a particular interest in experimenting with the production and use of Large Cutting Tools (LCTs), as well as investigating differences in raw materials efficiency.