Reuters reported that Copper slid to a six week low on Thursday as fears that central banks may curb stimulus programs earlier than previously expected outweighed concerns about supply disruption and delay at two large copper mines.

Benchmark copper on the London Metal Exchange closed down 1% at USD 7,050 a tonne in open outcry activity, erasing Wednesday's gain of 0.8%. Copper later extended losses in electronic trading to a low of USD 7,011.25 a tonne, the weakest since May 3.