Copper chisel against rock | Geologist against myths

Did the Ancient Egyptians have the capability to cut out limestone blocks? Old Kingdom Egyptian craftsmen could only make use of stone and copper tools. But on the Mohs scale the number for copper is 3, meaning it’s a very soft metal.
Can a tool made from a softer metal work harder material? What happens to a copper chisel if you try it on dolomite?

Pavel Selivanov, geologist, lead engineer at the Central Geological Research Institute for Nonferrous and Precious Metals (TsNIGRI) knows the answer.
Filmed on June 17, 2019 at the Dolomite quarry, Dubrovitsy, Moscow region.

We would like to thank ‪@SciTeam‬, Sergey Kotikov and Sergey Krivopliasov.
Filmed by Alexander Zakharchenko and ‪@Senmuth‬
Video editing by VItaliy Krauss and the ‪@ScienceVideoLab‬
English translation: Julie Deshtor aka Genviel (Genviel History Podcast Genviel History Podcast)

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