21.   Still, analysts expect that a boom in copper production around the world will keep a lid copper prices.

22.   Supplies are ample in part because of a boom in copper production worldwide.

23.   Still, the recent problems with copper production could lead to supply shortfalls later in the year.

24.   The company reported earlier that flooding had caused copper production to be disrupted.

25.   The increase of stockpiles comes as world copper production rises while demand from Asia slows.

26.   The stockpiles have nearly tripled since mid-June amid a surge in worldwide copper production.

27.   The rise in copper production comes amid a surge in global inventories.

28.   There has also been an increasing emphasis on copper production through solvent extraction, which tends to be cheaper as it avoids the need for smelting.

29.   Unlike lead supply concerns among proponents of electric cars, copper production has kept pace with a recent surge in demand for electrical equipment, components and wires.

30.   With its acquisitions, Konkola controls nearly two-thirds of copper production here.