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More sophisticated knapping is employed to produce almost perfect cubes which are used as bricks.
Bifacial flaking is the knapping of a point on both sides to create a blade.
Quarrying here has revealed signs of extensive occupation some 100,000 years ago: flint knapping was carried out here, the remains of a straight-tusked elephant have been found.
In neither the tailings nor these camps have large chunks of obsidian been discovered, suggesting that the knapping (breaking and shaping of the stone) was performed at or near the quarry.
In keeping with the advances in the woollen cloth trade, improvements were made; shortly afterwards, the mill not only housed fulling stocks, but also an example of the relatively recently invented Knapping mill.
Flint Knapping: Don Crabtree, Kimberley, Idaho; H. M. Wormington, Denver; Bruce Bradley, Cambridge, England, who made a Clovis point for me.
The artifact concentration of the Carson-Conn-Short site and the Johnson site (40DV400) indicate that these sites may have been Paleoindian base camps, where the knapping of projectile points and other daily activities of hunter-gatherers took place.
The archaeological excavations have provided thousands of pieces from the knapping of obsidian (suggesting that Aratashen was a centre of production and trade of artefacts of that highly regarded stone); the rest of the archaeological record consists mainly of fragments of common pottery, ground stones, and other agricultural tools.
