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16. Mai 2018

Yellowstone Lake too

I noticed that the seismograph at Auburn Fish Hatchery shows mining activity, see here. It's not as regular and also not restricted to work days, but the activity at Yellowstone Lake (the B208 monitor: set center day to April 28, 2018) seems to be industrial in nature too. Could a natural pattern have a frequency of once every 24 hours?

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