Ohio archæological and historical quarterly (1887)
Ohio State Archaeological and Historical Society · Columbus : Published for the Society by A.H. Smythe · leaf 137
nal copper mines ofMichigan large grooved hammers and mauls are often met with?The answer seems quite apparent when the mining of the copperis properly studied. The native copper was all the aboriginalminer was seeking, and very often the metal was surroundedwith a very hard rock. All that was… … Fig. 12. Hammerstone with a groove for the attachment of a handle. the quarrying of the flint required force applied with accuracy,and the ancient quarryman learned that a hammer attached toa handle was not a very accurate way to apply force to theflint; but he did learn that force applied directly…
History · Archaeology
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