David Garofalo says he will extend and increase his annual efficiency savings program after identifying more than US$250mn to date.
Operations were halted at Brazilian pellet-maker Samarco in 2015 following a deadly tailings dam burst.
Coeur Mining records positive net income, helped by a sharp increase in gold and silver production at its Palmarejo mine in Mexico, while drought conditions impact the San Bartolomé operation in Bolivia.
Mining exploration companies Glen Eagle Resources, Advantage Lithium, Orla Mining and Hot Chili provide operating updates on their lithium projects.
The miner swings to profit and announces that construction of a tailings dam at its flagship Candelaria copper mine in Chile is advancing on time and on budget.
The Organization of American States had called a meeting of foreign ministers to address the crisis in the country.
The company, which operates in Argentina, Chile and Peru, saw strong precious metals production in the first quarter, while pushing ahead with exploration work at three of its mines.
The US$17.7mn impairment at the El Dorado gold-silver project follows approval by congress of a ban on metallic mining in the Central American country.
Miner's net earnings more than double helped by higher metals prices, non-cash items and lower costs, while production falls. Goldcorp was Latin America's biggest gold producer in 2016.