"The mining sector isn't close-minded to new revisions of the taxation system, if done with prudence," said Pedro Francke, Castillo's economic adviser.
A state prosecutor filed subpoenas with Vale last June to review safety documents regarding its dam, but Vale's lawyers later argued that they had received positive reviews by an auditor.
The 2019 report on corporate social responsibility described the community-related activities the company has been engaged for over 15 years at the Ixtaca precious metals project in Puebla State, Mexico.