A skull and two tusk fragments from a Columbian mammoth, found in a sand it in Oklahoma. (Oklahoma Archaeological Survey) A bulldozer operator at a sand pit in northwestern Oklahoma got quite a ...
When push comes to shove, a giant bulldozer at Bonanzaville may move to another museum. The 100-ton machine has a connection to Melroe, the Gwinner, N.D., firm that introduced Bobcat loaders. But this ...
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