- Third quarter copper output up by nearly a quarter- Profitability in line with expectations- Metals and energy remain strong, improvement in agricultural performanceFTSE 100-listed commodities giant Glencore Xstrata said copper production increased 23 per cent during its third quarter while profitability was in line with expectations.The diversified miner said its own sourced copper production for the quarter totalled 1,070,900 tonnes after improved production at its mines in Chile and Africa. "Marketing profitability has continued to be broadly in line with expectations," the mining firm said in a statement."Metals and energy remain the strongest, however we are also witnessing an improvement in agricultural performance."CJ