...Minsur S.A.'s investment-grade ratings reflect the company's business position as one of the world's largest and lowest- cost producers of tin and its historically robust and conservative capital structure. Minsur is a small-scale company, although it ranked as the world's fourth-largest tin producer in 2017 due to the global market size for tin being relatively minor relative to other base metals. Minsur's main asset is the San Rafael underground tin mine in Peru, the world's largest underground tin mine, producing around 6% of the global tin supply. The company also produces gold, niobium and tantalum....
