BNamericas provides a roundup of the most important mining news in Latin America.
BNamericas speaks with Maria José Gazzi Salum of the country's mines and energy ministry about the reform's legal changes, royalties and environmental cooperation.
Negotiations will continue until July 26.
The Santander operation was hit by flooding in Q2, forcing the company to cut zinc production guidance, while a new mine and acquisitions boosted total production.
The two projects require some US$670mn in combined planned investment.
The latest news from junior mining companies operating in Bolivia, Argentina and Peru.
State mining company Comibol will have financial backing from the central government for a new tin-zinc concentrator, while the company courts Canadian investors to develop one of its zinc-lead properties.
BHP also received approval from environmental authorities for its Spence Growth Option project.