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Filters: Tags: Ophir district, Yukon region, Alaska (X)

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Rough bed rocks and boulder piled in pit. Ophir district, Yukon region, Alaska. September 1904. Plate 9-B in U.S. Geological Survey. Bulletin 263. 1905.
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Open-cut worked by tramming to bedrock sluices. Ophir district, Yukon region, Alaska. September 1904. Plate 27-B in U.S. Geological Survey. Bulletin 263. 1905.
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Flume of Hot Air Company, Ophir Creek, Ophir district, Yukon region, Alaska. September 1904. Plate 20-B in U.S. Geological Survey. Bulletin 263. 1905.
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Pier for trestle Hot Air ditch on Ophir Creek. Ophir district, Yukon region, Alaska. September 1904. Plate 21-A in U.S. Geological Survey. Bulletin 263. 1905.
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Sluice below elevator, Ophir Creek. Ophir district, Yukon region, Alaska. September 1904. Plate 25-A in U.S. Geological Survey. Bulletin 263. 1905.