(Reuters) -The United States will impose a 50% tariff on copper pipes and wiring, President Donald Trump said on Wednesday, but details of the levy fell short of the sweeping restrictions expected and left out copper input materials such as ores, concentrates and cathodes.
The surprise move dragged down U.S. copper prices more than 17% on the Comex exchange and unwound a premium over the London global benchmark that had grown in recent weeks, with shipments diverted there in anticipation of higher domestic prices.
