Marcelo Fonseca, one of the three workers that lead this group, told BNamericas that they want to match - or even improve - the Union No.1 benefits.
BNamericas asked Alex Griffiths, Wood Mackenzie principal analyst, about how Vale is positioned against its main competitors on the high-grade iron ore market and how long the current price rally could be sustained while avoiding the impact of the current US-China trade war.
The lack of security continues to be a major issue for miners such as Continental Gold, which suffered a second attack in two weeks.
The term guarantees the full operation of CSN's Presidente Vargas plant, the company's main steel asset.
Companies in Argentina and Mexico published results from their exploration programs.
Local mining giant Vale owns 50% of the plant, while Korean steelmakers Dongkuk and Posco hold 30% and 20%, respectively.
The program will initially comprise two deep drill holes with the first targeting a depth of 800m, according to a company statement.