The ground stone industry at Salat Camii Yanı is not extraordinarily rich but still represents some interesting aspects of the use of ground stone tools in the Pottery Neolithic in the Upper Tigris. Querns and mortars are usually made of sandstone or conglomerate and those of basalt are rather rare. They are usually an irregular shape and have a deep round/oval depression on one face. The interior surface of the depression is smoothened by grinding while the exterior is roughly shaped by flaking and pecking. Grinding slabs, which have a flat surface without a distinctive depression, are rare. Handstones and pestles were also found but in smaller numbers. One handstone of porous basalt has a trace of red pigment on one flat surface. Slabs of sedimentary rocks with slightly cancaved or grooved surfaces were probably used as abraders/whetstones.