A Wisconsin quarry owner was struggling with the oversized trap rock that had been accumulating in their 100-year-old quarry. Prior to calling on Surestrike the quarry owner had tried many different types of hydraulic hammers in their application but because of the hardness and density of the material not even the largest hydraulic hammer would break the rock efficiently. The…
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Oldest Rock Art Discovered
By Mark S. Kuhar A new high-tech analysis led by a University of Colorado Boulder researcher shows the oldest known petroglyphs in North America, which are cut into several boulders in western Nevada, date to at least 10,500 years ago and perhaps even as far back as 14,800 years ago.
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