Figure 9. A close-up of the North Portal spoil pile as it appeared in late October 2016. (The unstable spoil can sometimes lead to accidents, as in this case of toppled rail cars downslope.)

Figure 9. A close-up of the North Portal spoil pile as it appeared in late October 2016. (The unstable spoil can sometimes lead to accidents, as in this case of toppled rail cars downslope.) Image © 2017 DigitalGlobe, Inc. All rights reserved. For media licensing options, please contact thirtyeightnorth@gmail.com.

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