 Gold Resource Corporation NYSE-A:GORO, ETR:GIH, the Mexico-focused producer, said it ended 2021 with US34 million in cash having sold 37,512 precious metal gold-equivalent ounces. The operation at the Don David mine achieved the high end of output guidance, added the miner, and 13,553 tonnes of zinc, 1,420 tonnes of copper and 5,999 tonnes of lead were sold over the year. 