This paper presents the preliminary results of a study of a massive find of bone bead production refuse from three different production phases dated between the late 13th and the early 16th centuries. Differences in the choice of skeletal elements, in the efficiency of use of these raw-materials, and in the form of the products, indicate a growing degree of rationalization. Though at first accompanied by a growing pressure on supply of raw material, this development continued into the 15th century independent of the changing relationship between the availability of raw material and demand for it, showing early signs of mass production.
Medieval, Industry, Boneworking, Technics,Constance.