Imports of certain copper products into the US face a 50% tariff from Aug. 1 as President Donald Trump seeks to revive the domestic supply chain and make the country less reliant on foreign sources of this critical material.

President Donald Trump announced a 50% tariff on certain copper imports starting Friday, the same day the widespread “Liberation Day” duties are scheduled to kick in. In a flurry of trade news on Wednesday,

President Donald Trump’s decision this week to impose tariffs starting Aug. 1 on imports of certain copper products, but not on refined copper itself, tanked prices for the industrial metal on Thursday — and has likely brought a halt to a popular trading strategy.