New report shows private funds raising money for investment in metals and mining came up empty in Q3 and so far this year commitments total a paltry $100m.

Miners, which often use fossil fuels as the energy source in their operations, are shifting to renewable generation as the cost of wind and solar power drops.

Unionized miners will hold a day-long strike on Tuesday in a show of solidarity with ongoing protests over the high cost of living and extreme inequality in the country.

The Brazil-based company already operates five low-cost mines in South America and has become the world’s fourth largest zinc producer.