The world’s largest diversified miner, BHP Billiton, last week reported that its profit for the interim period to December was down some 57.8% compared with the previous corresponding period, to $4.2-billion.

The miner reported that the December half of 2012 was challenging for the global resources industry, as substantially lower commodity prices and resilient producer currencies weighed on margins and profitability.

Underlying earnings before interest and tax (Ebit) declined by 38% during the period under review, to $9.8-billion, while attributable profit decreased by 43% to $5.7-billion. Revenue for the period was down 14.1% to $32.2-billion.

BHP noted that the external influence of lower commodity prices, a weak US dollar and inflation reduced underlying Ebit by a cumulative $6.2-billion and more than offset the contribution from stronger volumes and operating cost savings.

However, the miner said despite the chal-lenging market environment, the group’s underlying Ebit remained in excess of 30%, while underlying return on capital was at 18%.

Meanwhile, during the half-year under review, BHP also realised some $4.3-billion from asset sales, which was consistent with its ongoing commitment to simplify the portfolio over time.

The miner said it would continue to selectively pursue asset divestment oppor-tunities, with a firm focus on value.

Looking ahead, BHP expected a general improvement in the global economy in the short term to support demand and prices for a number of its commodities. However, the miner noted that the addition of low-cost supply in several markets was expected to dampen the pricing upside.

In iron-ore, substantial new supply from low-cost basins in the Pilbara and in Brazil were either under construction or planned, while demand growth rates were expected to decelerate as the Chinese economy matured, following a period of steel-intensive, infra-structure-led growth.

Similarly, rising metallurgical coal demand was likely to be met by supply from the low-cost, high-quality basins, while overcapacity in the aluminium and nickel industries was likely to persist for the foreseeable future.