Los Mineros labor union alleges Industrias Peñoles violated workers’ freedom of association and collective bargaining rights at the company's mine in Zacazonapan.
New technique safely extracts valuable metals from e-waste and low-grade ore using dramatically less energy and fewer chemicals than existing processes.
In December, Nippon agreed to buy US Steel for roughly $15 billion but the deal faces an uphill battle to approval amid bipartisan opposition in a US election year.