This picture shows a late stage fluted preform from the Windy City site that was broken during manufacture. The two flake fragments at the right of the point are remnants of a channel flake that was removed from the opposite side. The reattached tip was carried away during fluting of the side not shown. The tip was afterwards reworked and a nipple was set up for fluting the side that is shown. The biface, however, broke in half during this fluting attempt. This fluted point is made of Munsungan chert and measures approximately 4 7/16 inches (11.2 cm) long and 1 5/16 inches (3.3 cm) wide. Shown in Bonnichsen et al. 1991: Fig. 1.4(b).