LME copper may retest resistance near $5,900/ton short-term, but likely to fail as metal likely to experience technical correction, says Barclays Capital. "The market is in the middle of a triangular range which appears corrective." LME 3-month last at $5,552/ton, down $48 on London PM kerb, after falling $135 overnight on weaker U.S. data. Adds, slide to $5,400 would prompt fresh selling, with eye on targeting $5,000, then $4,600.