To get to their jobs, they descend 1,000 feet into the ground in one of two elevators. They emerge in a large room. With ceilings as high as 16 feet, claustrophobia isn't a problem for most. The walls are a dirty white. Despite the hauling and loading of salt, the air isn't uncomfortable to breathe.
Vehicles take workers on a sometimes bumpy one-mile drive to the current mining area.
Another machine drills holes in the wall. Explosives are placed in the holes and detonated. It is rock salt. Closer examination shows that it resembles the stuff folks put on their driveways. Pillars left behind support the mine.