About
The Hottinguer coal mine was one of the main collieries of the Épinac coal mine. The buildings, raised between 1872 and 1876, housed a revolutionary atmospheric extraction system: a piston moving in a 558 m-high tube, machined in Le Creusot, rather than by traditional cables, which at the time were unable to descend to such depths, making it the deepest mine shaft in France when it was commissioned in 1871.
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