The world’s No. 1 gold miner has started a 10-day process of bringing Peñasquito back to full production.

The nation’s powerful copper-mining unions are encouraging members to down tools in solidarity with anti-inequality demonstrations.

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.