By Alex MacDonald

LONDON--India-focused Vedanta Resources PLC (VED.LN) Wednesday reported a slight rise in operating profits for its first quarter, driven by the performance of its oil, aluminum and copper divisions as well as the depreciation of the Indian rupee against the U.S. dollar, which lowered costs.

Earnings before interest, taxes, depreciation and amortization, or Ebitda, rose 1% to $1.04 billion during the first three months of the financial year ending March 31, 2015, compared with the same period a year before. First quarter sales rose 7% to $3.06 billion.

Vedanta's operating profit was largely disclosed on Tuesday when its majority-owned operating unit, Sesa Sterlite Ltd. (500295.BY), released earnings. The only division that hadn't reported was Vedanta's Zambian copper operations, where profitability dropped primarily due to lower output from the temporary shutdown of its Konkola mine.

The drop in Zambian profitability was more than offset by higher profit from its Indian and Australian copper assets following the suspension of its Tuticorin smelter in the first quarter a year before.

Vedanta's copper division saw first quarter Ebitda rise 16% to $61 million as a result. The rise occurred despite the suspension of one of its Australian mines in January following a rock fall. Vedanta said the mine will be closed until the 2016 financial year when it may consider reopening if is technically and economically feasible.

Cairn India Ltd. (532792.BY), Vedanta's largest earnings driver in the first quarter, increased Ebitda by 1% to $549 million due to a 3% rise in daily oil output and a 4% increase in the oil price compared with the same quarter a year before. The earnings rise was partially offset by a higher profit disbursement to the Indian government during the period.

The company's zinc and lead operations, its second largest earnings driver in the first quarter, reported a 14% Ebitda drop to $269 million due to lower amounts of metal mined in India and abroad, which more than offset higher zinc and lead prices.

The aluminum division, Vedanta's third largest earnings driver in the first quarter, increased Ebitda by nearly three-fourths, largely due to higher aluminum prices and the resumption of operations at its Lanjigarh alumina refinery compared with the first quarter of last year when it was suspended. Aluminum production rose 4% to 203,000 metric tons in the first quarter.

The company's iron ore division, traditionally one of its largest earnings drivers, swung to a small profit in the first quarter compared with the same quarter a year before following the lifting of an iron ore mining ban in the Indian state of Karnataka that allowed the company to resume production. But output was negligible at 10,000 tons owing to the slow pace of e-auction sales. The company said it still expects to produce 2.29 million tons of iron ore this financial year, in accordance with its government-sanctioned cap. Vedanta also expects the Indian state of Goa to give the go ahead to resume iron ore production in the second half of the financial year after lifting a mining ban there.

-Write to Alex MacDonald at alex.macdonald@wsj.com

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