 Golden Minerals Company NYSE-A:AUMN, TSX:AUMN, ETR:7GB has reported a big increase in first-quarter revenue as its Rodeo gold-silver mine in Mexicos Durango State produced 3,787 gold-equivalent ounces. In the three months to March 31, 2022, revenue of 7.5 million yielded a net operating margin of 3.2 million versus 1.8 million revenue and a net operating margin of 200,000 in the first quarter 2021, the Colorado-based company said. 