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| Location | File | Coordinates |
|---|---|---|
| Constantine Harbor, Amchitka, Alaska | harmonics | 51.4083° N, 179.2817° E |
| Massacre Bay, Attu Island, Alaska | harmonics | 52.8400° N, 173.1950° E |
| Sweeper Cove, Adak Island, Alaska | harmonics | 51.8633° N, 176.6317° W |
| Sweeper Cove, Adak Island, Alaska (2) (expired 1988-12-31) | harmonics | 51.8633° N, 176.6317° W |
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