The miners in Villa Verde hate working for the cartel, but Santa Blanca keeps them in line with threats to their families. Removing the threats will encourage the miners to throw down their tools and bring the mining to a halt.
To start this mission you need to acquire major intel in Villa Verde province.
Talk to the union leader
Bolivia
Kill Santa Blanca forces in La Marqueza
Bolivia
Kill Santa Blanca forces in the mine
Bolivia
With the Santa Blanca threat removed from La Marqueza, the local miners are refusing to work. The mines have shut down, depriving the cartel of the pyrolusite they need.