Revue archéologique de l'ouest - Année 2000 - Volume 17 - Numéro 1 - Pages 7-24The industry of Plasenn-al-Lomm (a site that probably belongs to the Upper Perigordian) is defined by an abundance of burins. These burins show various methods of resharpening and contain some intermediate pieces between tools and cores. Despite a lack of backed-bladelet, a localised bladelet production exits and goes with a very significant deficit in burin-spalls. These facts are suggesting the assumption that a backed-bladelet production did exist, but has left only few traces. The blanks used for this production should have been bladelet as well as some burin-spalls from specific burins, which are designed as cores and not as tools. The industry of Plasenn-al-Lomm (a site that probably belongs to the Upper Perigordian) is defined by an abundance of burins. These burins show various methods of resharpening and contain some intermediate pieces between tools and cores. Despite a lack of backed-bladelet, a localised bladelet production exits and goes with a very significant deficit in burin-spalls. These facts are suggesting the assumption that a backed-bladelet production did exist, but has left only few traces. The blanks used for this production should have been bladelet as well as some burin-spalls from specific burins, which are designed as cores and not as tools. 18 pages Source : Persée ; Ministère de la jeunesse, de l’éducation nationale et de la recherche, Direction de l’enseignement supérieur, Sous-direction des bibliothèques et de la documentation.