 The lithics in the earliest levels at Swan yielded microblades, which were not found at nearby Broken Mammoth and Meade sites.Lithics of this time period include bifacial tools, blade and microblades, choppers and scrapers of varying size; tools made of ivory are also present.Carbon residue of a chert platform rejuvenation flake has been radiocarbon dated to 13,800 B.P.