Fourteen papers explore a range of issues relating to prehistoric extraction sites, including ethnography, geochemical signatures, the application of neutron activation analysis, exploitation of erratics, excavation, survey and conservation. Topics include quernstone extraction, use of hammers, stages of extraction, geographical and social contexts, changing social regimes, the ritualised nature of journeys to quarry sites, study of petrofabrics, and the effects of joint and cleavage on quarrying practice. Two contributions are in French with extended summaries in English.