I have been smoking Riverstone for a while now. On many occasions now I nearly choked to death by unbeknownst to me smoking some of the black tar crap that is this product. Where is the warning label?? It is not a pleasant experience. I think your CEO should roll one up and try the black tar themselves. See how they like it. I have also been finding pieces of wood and stalks and other bits and pieces in this product. I have attached a photo of the black tar that I am talking about. Is this to make the product heavier?