 BHP Group, the worlds biggest miner, said it will pay out a record US16.3bn in dividends as it posted its highest ever full-year profit on record commodity prices, The group was also bullish on a recovery in China and said it will push ahead with growth options on a stronger demand outlook for one of its biggest customers. BHP said it will study plans to expand its top-earning iron ore unit to 330mln tonnes of production a year and is continuing to assess options to lift volumes in copper and nickel. 