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Huge rockfall in Boulder Canyon triggered by blasting works

Written by  Geoengineer.org

A huge rockfall caused by blasting works closed a highway located near Boulder, Colorado. The rockslide occurred on September 11, 2019. The scheduled

13
September

A huge rockfall caused by blasting works closed a highway located near Boulder, Colorado. The rockslide occurred on September 11, 2019. The scheduled


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