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A LARGE AXE GRINDING STONE FROM ILLINOIS
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   A COMPLETE AXE ASSEMBLY MADE SEVERAL YEARS AGO BY A MAN LIVING IN A STONE AGE CULTURE IN NEW GUINEA.
PETE BOSTROM COLLECTION

   Curiously, stone axes in New Guinea are used mainly to split wood. Adzes are used to cut down trees. The ratio of adzes to axes in some villages where they have been counted are 10 to 1.

   Axe grinding stones can be portable like the one described in this article. But many of them are just grooves worn into large rock outcrops.  In southeastern Australia on the slopes of Mt. Tuggeranong where large flat slabs of sandstone are exposed there are at least 30 axe grinding grooves worn into the stone. In the Sydney district there are hundreds of grinding grooves. Most of these sites are located near a water source because water was needed as a lubricant in the axe grinding process. A modern equivalent would be a wet-stone coated with a little oil to sharpen a pocket knife blade or water proof sand paper that also uses water as the lubricant.

Peck marks on surface of axe grinding stone.
PECK MARKS INDICATING DELIBERATE SHAPING OF THIS LARGE GRINDING STONE

   This picture shows a small area of the surface of this large grinding stone from Illinois. Most nut cracking and grinding stones that have been found in the eastern United States were made on unmodified pebbles. This large stone is fairly unique because it was pecked into shape (and is still intact). It measures 20 3/8 inches (51.7cm) long, 15 inches (38.1cm) wide and 5 inches (12.7cm) thick.

   Axe grinding stones represent some of the largest stone tools that were used by Stone Age peoples around the world. Hampton writes in his book--Culture of Stone, "The largest ground stone tools that are present in the Highlands (New Guinea) are permanently located grinding slabs (select spots on bedrock outcrops and large erratics (stones) and smaller portable but stationary grinding slabs".  Another stone tool type that is just as large are mortars that were used to grind various types of grain, nuts and other food stuffs.

Nut cracking holes on edge of large axe grinding stone.
SMALL HOLES AROUND THE PERIMETER OF THE GRINDING STONE

   There are at least 16 small round holes around the edges of both sides of this large grinding stone from Illinois. The best guess at what they were used for would be for cracking open nuts. The largest one is pictured above. It measures 1 1/2 inches (3.8cm) wide.

   The majority of all stone tools that have been found on Stone Age sites around the world are simple tools that were used by people in their everyday life to survive in all kinds of climatic conditions on land and water. They were used to process food, hunt, for defense, war, make clothing, shelters, boats----and in an endless variety of tasks that involved cutting, scraping, drilling, chopping and in the case with axe grinding stones, "grinding".


EDGE VIEW
GRINDING STONE

   Grinding wear on both sides have reduced the thickness in the center to approximately 2 inches (5.1cm). If axe grinding continued, this tool would eventually have broken. It would be logical to assume that on sites where these grinding stones were in use you would expect to find small broken fragments of these impressively large stone tools.

"REFERENCES"

1912, "Handbook of American Indians North of Mexico", by Fredrick Webb Hodge, pp.6, 7.
1919, "Handbook of Aboriginal American Antiquities", by W. H. Holmes, pp.344, 345.
1956, "Forest Clearance in the Stone Age", Sci. Amer. 194, pp. 36, 41.
1973, "Archeology By Experiment", by John Coles, pp. 20, 21.
1999, "Culture of Stone, Sacred and Profane uses of Stone Among the Dani", by O.W. "Bud" Hampton, pp. 93-97.
2002, "New South Wales National Parks & Wildlife" web site.

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