Figure 10. A close-up of the North Portal spoil pile from February 2017 shows that accumulations had begun move westward with a broadening of the top and bottom west side of the pile. A small shack and a small shallow rectangular excavation serve as positional reference markers for temporal comparison with Figure 9. Image © 2017 DigitalGlobe, Inc. All rights reserved. For media licensing options, please contact firstname.lastname@example.org.
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