Saltmarsh said that crude coal tar is no longer used. “Now you start with oil and break it down into basic components and then carry out a series of synthetic reactions. What you’re eating is ...

"Coal tar is a little more forgiving ... designed to enhance the asphalt sealer's resistance to gasoline and oil. One product is a custom-made asphalt emulsion sealer fortified with up to 10% ...

tar sands' bitumen can be upgraded to synthetic crude oil. Because developing fossil fuels from these resources is different and more intensive than traditional energy production, such as coal mining ...

tar sands' bitumen can be upgraded to synthetic crude oil. Because developing fossil fuels from these resources is different and more intensive than traditional energy production, such as coal mining ...