US STOCKS-Futures slump as global growth worries resurface
* Futures down: Dow 313 pts, S&P 37.25 pts, Nasdaq 90 pts
By Aastha Agnihotri
Feb 11 (Reuters) - U.S. stock index futures plunged on Thursday, with risk-averse investors piling into safe haven assets as another sharp fall in oil prices and cautious comments from Federal Reserve Chair Janet Yellen raised fresh doubts about the health of the economy.
* Yellen on Wednesday acknowledged tightening financial conditions and uncertainty about China and the risks that posed to the U.S. economy, but still kept open the possibility of further interest rate hikes.
* The dollar hit a 16-month low against the yen on Thursday as investors scrambled to buy gold and top-rated bonds and dumped stocks.
* Yellen, whose comments were taken to mean no near-term interest rate hikes, is scheduled to resume her testimony before Congress at 10:00 a.m ET (1500 GMT) on Thursday.
* A fresh reading on the U.S. labor market is due at 8:30 a.m. A report is expected show jobless claims fell to 281,000 last week.
* Wall Street, which had traded higher for much of the session after Yellen's comments on Wednesday, ended flat as a drop in oil prices weighed on energy and material stocks.
* Oil prices were down yet again on Thursday, with U.S. crude tumbling nearly 3 percent. Continuación...