| Feature Name: | Adelphi Mine (historical)
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| Feature Type: | mine
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| State: | South Dakota
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| County: | Lawrence
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| County Population: | 21802
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| County Housing Units: | 10427
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| County Size: | 800.04 Square Miles
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| Latitude: | 44.40833
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| Longitude: | -103.86806
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| Elevation: | 5440
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| Map Cell Name: | Spearfish
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| Geographic Keywords: | Adelphi,
Historical
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