"Kelly Andrew, the crew supervisor in charge of the plows, has a farming
background. He said he's watched farmers use a similar technique to clear
snow from fields. .... 'It looked like it melted about twice as fast as
the snow without the material on it,' Andrew said. .... 'It collects
that solar heat, and Mother Nature does her thing with that black surface,'
Saunders said."===================Terrific idea!
I'm astonished it hadn't been done before.Apparently like
farmers, the principle of something dark (the sand) rather than stark white (the
snow) collecting more solar energy and thus melting the snow more quickly is the
basis of a strategy I've used in clearing my sidewalks and driveway for
Cinders? Ain't nothing new about that. That Ain't no bottle rocket,
that's a sparkler.