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In 1861 a French engineer, German Sommelier, came up with the idea of the pneumatic pick or jackhammer while working on the Mont Cenis tunnel, which would link Italy with France. Engineers at the time said the tunnel project would take thirty years to complete. Sommelier worked with steam-powered drills and compressed air to invent the more efficient pneumatic drill pick that became know as the jackhammer. The tunnel was completed in 1871, some twenty years ahead of schedule.

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Q: Who invented the jack hammer?
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