Australian miner Fortescue Metals Group has refinanced $2.3 billion of its debt pile on a third attempt, but was forced to pay a higher yield amid investor concerns about the state of the iron ore market. Fortescue sold senior secured notes in New York at a 10.25 percent yield on Wednesday, a far richer price than the 8.5 percent the company offered just a month ago but which was pulled after it failed to tempt investors.