New Delhi, July 9 -- Domestic metal stocks, including Hindustan Copper, SAIL, Tata Steel, Jindal Stainless, Vedanta, and NMDC, came under significant selling pressure during Wednesday's trading session, falling as much as 3.5% to the day's low.

The decline followed U.S. President Donald Trump's decision to add another base metal-copper-to his latest round of tariffs, in addition to the previously announced 50% duties on steel and aluminium. The move also raised fears that he may further expand the tariff list to include other commodities as well.

On Tuesday, Trump announced plans to impose a 50% tariff on copper imports in a bid to boost domestic production and reduce the country's reliance on foreign supply. The U.S. currently imports ...