The Mexican steelmaker reports 4.52Mt liquid steel production in 2018, an increase on the previous year but below original forecasts.
Companies report production results for silver and gold mines in Mexico and Argentina.
Companies issue M&A and financing updates relating to lithium and gold projects in Argentina, Chile and French Guiana.
Exports of copper concentrate totaled US$1.5bn last year, official data shows.
Bolivia's state mining company inched closer to awarding a long-overdue expansion contract for one of its mines.
CEO Gary Goldberg said the company plans US$1.5bn of asset sales following its planned US$10bn acquisition of Goldcorp which will create the world's biggest gold miner.
Part of the plan is a US$2mn boost so local governments can provide more training and assistance.
A study on Filo's Chile-Argentina project shows an initial probable mineral reserve of 259Mt of 0.39% copper, 0.33g/t gold, and 15g/t silver.
A complete overhaul of rules controlling worker safety and environmental impacts is needed for healthy growth in the mining sector, according to senate mining committee president Geovanna del Carmen Bañuelos.
The Araguaia project is estimated to require US$345mn in investments for full implementation, Horizonte said.