Copper prices hit record high
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President Trump's threatened 50% copper tariffs have boosted prices for the metal in the U.S. far ahead of anywhere else, lifting the premium to roughly one quarter. Copper futures mainly trad
LONDON, July 9 (Reuters) - U.S. copper futures widened their premium to the London benchmark on Wednesday, reflecting U.S. President Donald Trump's plan to impose a 50% import tariff on the metal.