Image Missing: Hearst Museum object titled Grinding slab, accession number 9-6843a-c, described as Grinding slab with 2 handstones; a) slab; shaped with dots, curvilinear and triangular designs in white against dark gray background; width 29 cm; length 48 cm; b) triangular handstone; width 22.5 cm. b) cylindrical handstone; length 29 cm.