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Place
- Houghton[remove]45
- Michigan45
- North America45
- USA45
- Calumet3
- T48N, R37W, Sec.26 about 4 miles north of Kenton.3
- Laird Township, Silver Mountain2
- Laurium.2
- near Osceola Swamp.2
- Chassell Twp. T53N, R34W, Sec 351
- Chassell Twp. (T53N, R34W).1
- City of Houghton, SW corner Isle Royale & Lake Streets. T55N, R34W, Sec. 36.1
- East of Hurontown.1
- Eureka.1
- Isle Royale Mine site.1
- Keweenaw Point, Lake Superior1
- Lake Linden1
- Lake Shore1
- Near bridge east of Dollar Bay1
- On east shore of Torch Lake.1