Ochre is well-known as a substance used in Stone Age symbolism, but it can be shown to have had practical functions too. The authors used microscopic examination of Middle Stone Age tools to show they had been hafted, making use of an adhesive compound which included ochre in its recipe.

Composite tools and hafted tools were used world-wide over the last 35,000 years, and possibly earlier than that (Boëda et al. 1996; Holdaway 1996). Evidence for the use of composite tools in South Africa is provided by a small number of arrows from ethnohistorical and archaeological collections (Binneman 1994; Deacon & Deacon 1999: 158–9), a handful of mounted stone artefacts, and a significant number of mastic stained stone artefacts from archaeological sites (Deacon & Deacon 1999). On the basis of the limited sample of near intact mounted artefacts found in South Africa, it appears that small scrapers were side-mounted (at almost 90° to the axis of the handle) and fixed asymmetrically by surrounding resin (Deacon & Deacon 1980: 31–2). Adzes, on the other hand, were end-mounted (on one extreme, and along the same plane, of the handle) and held by a large ovoid lump of mastic (Hewitt 1921; Goodwin & Van Riet Lowe 1929: plate 42; Sampson 1974: figure 105). From their analysis of the available material two decades ago, Deacon & Deacon (1980: 37) concluded that the size and form of the insert was determined largely by the mode of hafting.