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Mighty Machines Salt Mine

12 Rare Photos That Take You Inside an Amazing Salt Mine ... · The first operation for mining rock salt is undercutting, a process by which large machines cut a space 10 or more feet (3 metres) deep into a solid salt wall. Then, small holes are drilled into the salt wall, and explosives are put into the holes. At …

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Learn about the latest mining equipment news in various places.