United States National Register of Historic Places |
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Threemile Gulch
| NRHP ID: 11000632 |
| Location (in/near): Hartsel, Colorado |
| Listed: 2011-09-13 |
| Role: District |
| Significance region: National |
| Significance area(s): Exploration/Settlement; Industry; Prehistoric; Social History |
Data from United States Park Service and Wikidata