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- Gold mines and mining[remove]23
- Miners16
- Gold discoveries10
- Gold miners10
- Mines and mineral resources6
- Chinese2
- Gold panning2
- Mineral industries2
- Social conditions2
- African Americans1
- Chaparral1
- Copper mines and mining1
- Diversion structures (Hydraulic engineering)1
- Frontier & pioneer life1
- Frontier and pioneer life1
- Gambling1
- Gold rushes1
- Goldmining1
- Hydraulic mining1
- Indians of North America1
