The early miners to the West initially engaged in ______________ mining and then moved to ________________ mining.

Question

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Placer mining involves using water to separate minerals from sediment, such as panning for gold in a river. This was the initial form of mining used by early miners in the West. Hard-rock tunnel mining involves digging tunnels to access underground mineral deposits, which was the more advanced form of mining that miners eventually moved to.

The Early Miners to the West Initially Engaged in ______________