New Delhi, Aug. 25 -- Of the seventeen large Indian companies this series follows, Hindustan Zinc is the one falling fastest on Tuesday, and it is the only one of the four big metal producers being sold on more volume than it normally trades.

49 IST, down Rs.16.10 or 2.67 percent on Monday's close of Rs.604.00, and at Rs.587.85 on the BSE. It opened at Rs.600.00, got no higher than Rs.600.60, and worked down to Rs.586.85. Turnover of 36.39 lakh shares is 62.2 percent of an average full day, which extrapolates to about 1.5 times a normal session. These are live intraday figures from a session that settles at 15:30.

That volume figure is the part that separates Hindustan Zinc from the rest of the complex. Tata Steel is giving back Monday'...