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The original was posted on /r/todayilearned by /u/MartianAndroidMiner on 2024-09-07 18:05:50+00:00.

Original Title: TIL that the deepest mine in the world, Mponeng Gold Mine in South Africa, reaches over 4 kilometers (2.5 miles) below the Earth’s surface. At such depths, temperatures can reach 60°C (140°F), requiring advanced cooling systems to keep the miners safe.