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1993年，美国圣曼纽尔铜矿的铜产量增加5％，达159533t，是生产规模仅次于智利埃尔特尼恩特铜矿的世界第二大地下铜矿。该矿自1956年投资以来至1993年共产出矿石595Mt，平均含铜0．72％，创造了地下矿山采矿总量的世界新纪录。在圣曼纽尔1993年的产量中，硫化矿石产钢103200t，
In 1993, the copper output of the United States San Manuel copper mine increased by 5% to 159533t, the second largest underground copper mine in the world after the Eltiente copper mine in Chile. Since its investment in 1956, the mine produced a total of 595Mt of ore with an average copper content of 0.72% since 1993, creating a new world record for underground mining. In Saint-Manuel’s 1993 production, sulfide ore produced 103,200 tonnes of steel,