The Sensex has slipped back deeper into red and is now down 517 points at 17,559.The NSE Nifty is down 154 points at 5,126.BHEL has slumped 4.5% to Rs 2,126, and Tata Steel has plunged 4.3% to Rs 778.Tata Motors, Reliance Communications and NTPC have tumbled nearly 4% each to Rs 709, Rs 582 and Rs 197, respectively.HDFC, ICICI Bank, ACC and Maruti have shed 3.7% each to Rs 2,752, Rs 1,172, Rs 760 and Rs 778, respectively.Hindustan Unilever dropped 3.5% to Rs 213.Satyam and TCS are up 1% each at Rs 426 and Rs 883, respectively.Out of 2,746 stocks traded so far, 1,928 have declined, 768 have advanced and 50 are unchanged.
