OTTAWA — An aluminum plant in Quebec stopped production on Tuesday, in what appears to be one of the first casualties of U.S. President Donald Trump’s 25 per cent tariff on Canadian goods.

Alubar Métaux, which is based in Bécancour and produces aluminum rods from molten metal from the neighbouring aluminum smelter, announced to its employees Monday evening that it would cease operations because of the tariffs. According to the union, Alubar’s production is almost entirely destined for the American market.