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US DOE/NNSA Response Data Repository

Published by National Nuclear Security Administration | Department of Energy | Metadata Last Checked: August 03, 2025 | Last Modified: 2015-02-28
This portal contains environmental radiological monitoring data collected in response to the nuclear emergency following the March 11th, 2011 Tohoku earthquake and tsunami. Available data sets include field measurements, field samples, and analysis results. It is designed to contain data sets from other large-scale response efforts should they occur.

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