Base metals were trading in a tight range during Tuesday’s pre-market session, wavering in the absence of any clear micro- or macro-economic cues Base metals were trading in a tight range during Tuesday’s pre-market session, wavering in the absence of any clear micro- or macro-economic cues. Three-month copper traded at $9,437.5 per tonne at 10:03 BST, down from an opening price of $9,477.25 per tonne. Its intraday range at this point was a high of $9,482 per tonne and a low of $9,411 per tonne in a thinly-traded session. The incremental improvement of the dollar against the euro put some pressure on copper, while news of an impending 24-hour strike by Codelco’s Chilean workers raised concerns...

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