Oxbow's Koch is bullish on coke. The diversified firm's Oxbow Carbon unit markets and distributes coke, coal, petroleum, and carbon products and other commodities to power producers, refineries, and industrial manufacturers. Oxbow is the world's top marketer of petroleum coke, which is used in power generation, cement kilns, sugar mills. and aluminum manufacturing. The company also trades gypsum, bauxite, and clinker. Oxbow also owns a highly productive coal mine which produces 6.5 million tons of coal annually. Oxbow is controlled by William Koch, an America's Cup winner who founded Oxbow in 1983 after being ousted from the family business (Koch Industries) by brothers Charles and David.