Copper prices gained 2% in pre-market trading on the London Metal Exchange as all base metals, with the exception of zinc, traded exclusively above their opening levels. Three-month copper started the day at $7,765.25 per tonne and increased to trade at $7,920 per tonne by 10:14 GMT. The contract traded as high as $8,005.25 per tonne and dipped no lower than its opening price. Copper...
