San Dimas workers down tools as union negotiations fail

Mining and milling operations at precious metals producer Primero Mining's San Dimas mine have come to a halt as unionised workers downed tools following a breakdown in negotiations between union leaders and the company. Toronto-based Primero on Wednesday said it was looking to reduce the scale and complexity of the San Dimas operation to increase productivity and return the mine to positive cash flow. The company had asked the National Union of Mine, Metal, Steel and Allied Workers of the Mexican Republic to extend the negotiation period, but the union refused.