Metals prices mixed as copper declines

Among metals, gold prices were up by $10 to $644.50.$645.45 per troy ounce. On the other hand, copper prices were $180 lower to $7,770 per tonne. Copper workers at Escondida mine in Chile set a Wednesday deadline for management to raise pay in order to avoid a strike there. Meanwhile, copper inventories at London Metal Exchange warehouses were up, helping prices to go lower.