Here's and interesting article reviewing some of the issues surrounding oil pricing and refining. There could be additional downward pressure on the price for Oil Sand product. http://www.caseyresearch.com/articles/oil-price-differentials-caught-between-sands-and-pipelines

Hi all, Does anyone have any idea why the walls of a unit would have this gray striping where the studs are? It`s a corner unit, and the discoloration appears on both sides of building--on all the exterior walls, but not the interior walls. The building has a concrete exterior with metal studs...