Mumbai, Oct. 17 -- The ongoing silver rally and a weaker rupee helped Hindustan Zinc Ltd report a 14% year-on-year jump in its profit for the September quarter, offsetting a sharp dip in metal production.

The company, which makes zinc, lead and silver, reported a consolidated profit of Rs.2,649 crore for the quarter. Revenue for the quarter was up 4% to Rs.8,549 crore, its highest ever for the July-September period.

Silver production during the quarter was down by a fifth compared to last year to 147 tonnes, limiting the company's ability to benefit from the ongoing boom in silver prices. Lead production too dropped by 29% to 45,000 tonnes, while zinc production inched up by 2% to 202,000 tonnes.

Moreover, the company has cut its silve...