Between the 7th and 9th of April 2010 study sessions were organised on the themes of knapping and stone tool production in prehistory, with the participation of Prof. F. Briois (EHESS - Universitè di Toulouse Le Mirail - France). 

The event was centred around two meetings organised for the 8th of April. The first, held at the Usini Civic Auditorium, was open to schools and the general public. The second, held in the Faculty rooms of the Department of Literature and Philosophy at Sassari, was dedicated to university students. Prof. Briois demonstrated techniques and methods of knapping used in prehistory for the production of objects in flint and obsidian. 

The encounters, organised by LaPArs and the Sardòs Association, were realised thanks to the contributions of the Usini Town Council and the Faculty of Literature and Philosophy