The term REFINERY SIGHTS is composed of two crossword solutions, TANKS (5 letters) and REFINERY (8 letters). Refineries are industrial facilities that process raw materials into products such as gasoline, diesel fuel, and other petroleum-based products. TANKS are large, enclosed containers used to store liquids or gases. Refinery sights are the TANKS used to store the products of the refinery. These TANKS are usually made of metal and can be seen in the vicinity of a refinery.