'Hold the salt,' says Mayo, as winter approaches

Mayo Clinic's giant Rochester campus includes 15 miles of sidewalks and 120 acres of parking lots and roads. That kind of property requires plenty of plowing in winter — but not as much road salt as it used to. Minnesota Public Radio reports on how Mayo's ground maintenance crews have cut back on heavy, frequent use of salt, citing the impact on water sources from runoff. The clinic, of course, also has to keep in mind patient safety, meaning icy sidewalks are also a bad outcome. The Minnesota…
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