Original oil and gas trade vintage ad for COLORADO FUEL & IRON. CORPORATION. Main office and factory was located in Denver, CO. The shapes of steel in the petroleum industry are engineered with oil field requirements in mind. Before steel casing and tubing leaves the CF& I Seamless tube mill it must pass a lengthy series of quality checks. Double Gray-X rotary drilling lines have a molecular shield that allows a guarantee longer life than any other brand of wire rope. This unique 1962 oilfield petroleum drilling equipment magazine advertisement would display beautifully matted and framed. Two page gatefold advertisement.