Hochschild Mining became the latest miner to close a mine as its oldest operation fell victim to slumping silver prices.
The congressional energy and mines committee plans roundtable talks aimed at overhauling mining laws it says have thwarted development and sparked community conflicts.
Steel is now Brazil's biggest shipped to the North American nation, surpassing hydrocarbons, turbojet and turboprop components, and aircraft, official data shows.
Companies issue asset acquisition and financing updates relating to rare earth minerals, silver, lead, zinc and gold projects in Argentina, Chile and Mexico.
However, concerns persist over the effects that retaliation would have on negotiations between the EU and Mercosur over a free trade agreement.
Companies operating in Peru published updates on their projects.
Teck Resources 2018 financial and operating results
The taxes may be imposed on companies whose activities pollute water, soil or air, as well as those that dispose of their waste in public and private landfills.