Research Reveals Chimpanzee’s Stone Tool Choices Mirror How Ancient Human Ancestors Used Them Researchers have noted a stark ...

This heavy-duty tool has a standard pistol-style grip ... a concrete walkway, or a stone countertop, yet a hammer drill fitted with a masonry bit will easily bore through these dense materials.

The hammer is held in the hand and brought ... similar techniques when choosing stones for use as tools. More information: D.R. Braun et al, Stone selection by wild chimpanzees shares patterns ...

A hammer may be used in conjunction with this tool. Cobble tool: A type of large core, with a spall removed, that is used as a chopping/cutting tool. Cores: A stone that functions as the primary ...