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Except in very light snow, minerals or chemicals should never be
used in place of snow plowing. However, in combination with
trained personnel and equipment, minerals or chemicals play an
important part in controlling ice and snow. Whenever possible,
apply minerals or chemicals before a snowfall. You'll use less,
and it will be less damaging for the environment. You may have
to increase the use of minerals or chemicals at night and as
temperatures fall.
Experts agree that the use of chemical mixture of two parts
mixed chemicals (1:3 calcium chloride to salt, by weight) mixed
with one part abrasive (cinder, sand or slag) is more effective
than rock salt alone in melting snow and ice below 30°F. One
hundred fifty pounds of such mixture with abrasives will treat a
50,000 sq.ft. surface.
It is imperative to treat priority areas such as hills, heavy traffic
areas, bridges and intersections first, especially where snow may
compact and adhere to the road surface, causing icy road
conditions. When slush begins to stiffen and refreeze, it will be
necessary to plow again and reapply chemicals.
Minerals and Chemicals for Ice Control