Diversified global natural resources giant Vedanta Resources on Wednesday reported a 27% surge in operating profit to $4.1 billion for 2017-18 on higher output and increase in prices. The LSE listed company, which produces aluminium, copper, zinc, lead, silver, iron ore, oil and gas and commercial energy, had registered group EBITDA (earnings before interest, tax, depreciation and amortisation) of $3.2 billion in the financial year 2016-17, it said in a statement. Its revenue increased by 33% to $15.4 billion driven by firmer commodity prices and volume ramp-ups.