rock salt

(Newser) - Below Cleveland, in a subterranean world many surface dwellers don't know exists, miners extract a crucial winter mineral—salt. The Whiskey Island salt mine, owned by food giant Cargill, helps supply road salt across the Northeast and Great Lakes, where a colder, snowier-than-usual winter has driven demand. Many municipalities...

(Newser) - With a storm expected to dump more than a foot of snow on parts of the Northeast, cities throughout the region spent Thursday preparing—in one case with deadly consequences. A worker in a Philadelphia-area salt yard was killed yesterday afternoon after a 100-foot-tall rock salt pile collapsed on him....