There's Silvercorp (SVM). It was a Jon Carnes (Alfred Little) target. Buyer beware.
Also Minco Silver (MISVF). It has a development project in Guangdong that's been stalled for 5 years in environmental permitting. The company invested a bunch of its cash in an Australian explorer.
For copper I don't think there are any US listings. Jiangxi Copper (0358.hk) is a blue chip with an ADR (JIXAY).
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