Tuesday, May 30, 2017

Good idea for a driveway that stays clear of snow and ice

Popular Science Feb 1946


  1. A lot of city streets in Sweden have steam lines running under the streets instead of sidewalks to do this.

  2. I grew up in Allentown PA and the city supplied steam heat to many buildings downtown - the streets and sidewalks were always free of snow and ice because of the steam pipes under them.