Bolivia's El Mutún iron-steel project and Torex Gold's Mexican ELG mine got a green light this week, while Brazil's Votorantim and Peru-based Minera IRL both posted profits in 2017.
The country retains its rank as the world's biggest silver miner and a top-10 producer of gold, copper, lead, zinc and molybdenum.
Foreign trade secretary Abrão Árabe Neto said conversations with the US are advancing well, with several factors pointing to a permanent exemption for Brazil, one of six countries temporarily excluded from the duties.
Shipments of slabs were down almost 30% in the first three months of the year.
Companies report financing, development and appointment updates related to precious metals projects in Mexico.
Companies report exploration updates relating to silver, gold and copper assets in Mexico.