Today I Learned@lemmy.worldEnglish · 2 年前

TIL about Hallstatt mine; the oldest mine in the world

phys.org

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TIL about Hallstatt mine; the oldest mine in the world

phys.org

Track_Shovel@slrpnk.net to

Today I Learned@lemmy.worldEnglish · 2 年前

Salt of the Alps: ancient Austrian mine holds Bronze Age secrets

phys.org

All mines need regular reinforcement against collapse, and Hallstatt, the world's oldest salt mine perched in the Austrian Alps, is no exception.

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