americas gold  silver corp said its cosala operations in mexico have returned to nameplate mill production and output at its san rafael mine continues to ramp up and isnt a bottleneck for mill production the precious metals mining company said wednesday the operation is being fed by a mix of existing stockpiled ore and new production from the mine the company started recalling workers to cosala in september as it began reopening the operation which had been shut for more than a year by a blockade that prevented access initial production will focus on maximizing nearterm free cash flow by mining highgrade zincsilver areas of the mines main zone that were fully developed before the blockade americas gold  silver said over the course of the next six months it said the mine will continue development into the upper zone which carries silver grades about five to six times higher than the main zone mining the silverrich areas of the cosala operations is expected to significantly increase silver production to more than 25 million ounces of silver a year the company said