The deal, which is pending court approval, involves buyers of American Depository Receipts (ADRs) in the Brazilian petrochemical firm between July 2010 and March 2015.
The limestone extraction project is focused on the production of magnesite and other minerals.
The Chilean P&C insurer has Carlos Escudero Segura at the helm.
Mexican ferroalloy producer is on track for its best results in nearly a decade this year following strong rises in silicomanganese and ferromanganese prices.
Infraero controls 59 airports and holds a 49% stake in Brasília, Guarulhos, Viracopos, Confins and Galeão airports.