Base metals traded around their opening prices on the London Metal Exchange on Tuesday morning, after opening well above Monday’s official prices following a strong close last night. “There were some very strong closes yesterday after some very good rallies,” a category I trader told MB. “Some fresh buying yesterday triggered shorts in copper and aluminium, and lead and zinc got taken along with them.” Three-month copper broke out of its range during late trading on Monday to open at $6,820 per tonne today, well above Monday’s official price of $6,700/705 per tonne. Though the dollar has again weakened and stock markets performed strongly, traders are unsure...