Snow insulation and ice thickness in Hay Slough No flash player has been set up. Please select a player to play Flash videos. Video not playing? Update your browser or download the video clip Charlie Campbell talks about the effect of snow insulation and ice thickness at Hay Slough. Process Observed: Snow InsulationIce ThicknessSafe Ice Date Process Observed: Wednesday, March 2, 2011 Galleries: Hay Slough Gallery