"We are more negative on iron ore than in energy and any other commodity sector and the big guys are increasing production and there is a mismatch on supply. China GDP and the sector is a mess," the debt investor said. The "big guys" are Brazil's Vale and Anglo Australian giants Rio Tinto and BHP Billiton, who are flooding the market just as China's growth has slowed, depressing prices and making a bond sale tough at the yields Fortescue was willing to pay. CASH FLOW OPTIONS Fortescue could have learned from Australian miner Whitehaven Coal's experience.