The article below lists the five largest lead mines in the US for 2022, based on annual tonnage.
https://www.mining-technology.com/ma...-mines-the-us/
Perhaps you were thinking lead smelters, not lead mines - they aren't the same.
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https://www.miningweekly.com/article...ths-2023-05-17
"The country has five lead mines in Missouri, and lead is produced as a by-product at two zinc mines in Alaska and two silver mines in Idaho. These mines include the Renco Group’s Sweetwater mine in Missouri and Teck Resources’ Red Dog mine in Alaska."