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Scientists have collected and analyzed 84 environmental samples to establish baseline data prior to any active uranium mining activities at the Pinyon Plain Mine (formerly Canyon Mine), located south of Grand Canyon National Park.
Uranium levels in Pigeon Spring, just north of the Grand Canyon, are likely due to a natural source of uranium and not related to the nearby former Pigeon Mine.
USGS scientists found that living organisms can take up uranium into their tissues under a broad variety of water quality conditions. This knowledge may help regulators better safeguard the environment for conservation and resource extraction purposes.
Printable PDFs showing conceptual models of uranium mine sites and groundwater flow within the Grand Canyon.