YEP - I'm looking at the bottom of a milk jug now - it has "HDPE" stamped on it, which; as Chuck stated is High Density PolyEthylene. Milk jugs are made from virgin material, but chairs can be made from a matrix containing regrind. I use HDPE virgin 55% + regrind 45% to make-up the recipe for my concrete forms. In concrete forms, the regrind is considered to be utilized in an "INERT APPLICATION", whereas regrind cannot be used in food or drink storage applications - you wouldn't want to be drinking milk from a container that had regrind previously used for motor oil or benzine.
Otis Guillebeau from Auburn, Georgia
OPG3 Tweak everything!