| Address | One mile southwest of Kassler in Cottonwood Gulch and Bear Gulch on the west side of the South Platte River. |
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| Quad | Kassler 1965 (1980); Platte Canyon 1965 (1980) |
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| Section | S5 T7S R69W; S33 T6S R69W |
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| Source | Ayler, Maynard. "Seven Devils Prospect, Waterton, Colorado Report." Colorado School of Mines, 1955. |
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| Other | Holy Terror No. 1 and No. 2, Hiroshima No. 1 |
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| Initialdate | 1998-06-10 00:00:00-06 |
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| Person | KER |
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| Latestdate | 1998-06-11 00:00:00-06 |
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| History | The Seven Devils Prospect Mines are 3 ore grade uranium claims, Holy Terror No. 1 and No. 2 and Hiroshima No. 1, located along the floor of the South Platte River. |
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| Active | 1 |
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| Lifecyclestatus | Active |
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