Copeland (James) Mine, pocket (can) dumping load on grizzly
A miner stands near a grizzly while a pocket (can) dumps its load underground at the Copeland (James) Mine. A grizzly is a large grate used to coarsely screen rock as it falls into ore chutes. The Copeland Mine (James Mine?) was an underground lead-zinc mine with surface workings in the Shullsburg area in the Upper Mississippi River Valley mining region of Wisconsin. The Upper Mississippi River Valley mining region was being prospected for lead in the 1820s and by the 1850s it had become an important lead producer. Zinc ores, originally discarded, were later identified as valuable. By the 1870s ...
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