“…fabric characterisation and identification of forming techniques) both require the imaging of inclusions, it is important to be aware of the factors involved in determining their greatest clarity on X-rays. Many scholars have grappled with this issue indirectly when utilising radiography to identify different fabric groups (Adan-Bayewitz and Wieder, 1992;Bennett et al, 1989;Blakely et al, 1989;Braun, 1982;Carr, 1990Carr, , 1993Middleton, 1995), but only few have approached this issue systematically through experiments (Carr and Komorowski, 1991;Foster, 1985). Foster (1985) tested the visibility of crushed grog, seeds, straw, wood, coral, sponge, insects, snail, clam, sea urchin, mussel, scallop, murex, several gastropods, limestone, granite, alluvial magnetite and quartz in two synthetic and one natural clay.…”