> Since plastic coats the stone and interacts with the hot bitumen, it’s properties change and it doesn’t break down when exposed to light and heat. This is a

> Since plastic coats the stone and interacts with the hot bitumen, it’s properties change and it doesn’t break down when exposed to light and heat. This is a tall claim that needs substantiation. I'm no chemist, but I think most organic compounds, plastics included, break down with heat and light exposure. Perhaps he thinks his process makes the plastic break down more slowly, but again, evidence needed.