Original oil and gas trade magazine vintage ad for BECHTEL CORPORATION of San Francisco, CA. All Wrapped Up in One Package. When Monsanto Chemical Company decided to build one of the world's largest hydrocarbon processing plants at Chocolate Bayou, Texas, Bechtel was given over all responsibility for the whole complex, process and mechanical engineering, procurement and construction. This unique 1962 old petroleum refining industry magazine advertisement would display beautifully matted and framed.